/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-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:07:43,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:07:43,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:07:43,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:07:43,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:07:43,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:07:43,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:07:43,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:07:43,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:07:43,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:07:43,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:07:43,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:07:43,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:07:43,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:07:43,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:07:43,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:07:43,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:07:43,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:07:43,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:07:43,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:07:43,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:07:43,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:07:43,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:07:43,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:07:43,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 13:07:43,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:07:43,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:07:43,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:07:43,461 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 13:07:43,478 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:07:43,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:07:43,479 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:07:43,479 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:07:43,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:07:43,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:07:43,480 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:07:43,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:07:43,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:07:43,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:07:43,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:07:43,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:07:43,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:07:43,481 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:07:43,481 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:07:43,481 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:07:43,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:07:43,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:07:43,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:07:43,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:07:43,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:07:43,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:07:43,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:07:43,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:07:43,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:07:43,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:07:43,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:07:43,483 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:07:43,483 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:07:43,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:07:43,483 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:07:43,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:07:43,484 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:07:43,484 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:07:43,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:07:43,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:07:43,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:07:43,685 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:07:43,691 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:07:43,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2022-01-10 13:07:43,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2c2bd1fe/039d658f3d2e49d3856971793644e38b/FLAG73a61ae5b [2022-01-10 13:07:44,161 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:07:44,162 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2022-01-10 13:07:44,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2c2bd1fe/039d658f3d2e49d3856971793644e38b/FLAG73a61ae5b [2022-01-10 13:07:44,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2c2bd1fe/039d658f3d2e49d3856971793644e38b [2022-01-10 13:07:44,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:07:44,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:07:44,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:07:44,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:07:44,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:07:44,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:07:44" (1/1) ... [2022-01-10 13:07:44,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@509ae81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:44, skipping insertion in model container [2022-01-10 13:07:44,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:07:44" (1/1) ... [2022-01-10 13:07:44,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:07:44,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:07:44,840 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10021,10034] [2022-01-10 13:07:44,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:07:44,938 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:07:45,008 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10021,10034] [2022-01-10 13:07:45,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:07:45,071 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:07:45,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:45 WrapperNode [2022-01-10 13:07:45,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:07:45,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:07:45,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:07:45,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:07:45,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:45" (1/1) ... [2022-01-10 13:07:45,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:45" (1/1) ... [2022-01-10 13:07:45,130 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 914 [2022-01-10 13:07:45,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:07:45,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:07:45,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:07:45,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:07:45,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:45" (1/1) ... [2022-01-10 13:07:45,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:45" (1/1) ... [2022-01-10 13:07:45,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:45" (1/1) ... [2022-01-10 13:07:45,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:45" (1/1) ... [2022-01-10 13:07:45,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:45" (1/1) ... [2022-01-10 13:07:45,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:45" (1/1) ... [2022-01-10 13:07:45,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:45" (1/1) ... [2022-01-10 13:07:45,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:07:45,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:07:45,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:07:45,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:07:45,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:45" (1/1) ... [2022-01-10 13:07:45,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:07:45,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:07:45,264 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 13:07:45,271 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 13:07:45,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:07:45,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:07:45,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:07:45,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:07:45,443 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:07:45,444 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:07:46,164 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:07:46,180 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:07:46,180 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 13:07:46,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:07:46 BoogieIcfgContainer [2022-01-10 13:07:46,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:07:46,186 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:07:46,186 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:07:46,187 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:07:46,190 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:07:46" (1/1) ... [2022-01-10 13:07:46,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:07:46 BasicIcfg [2022-01-10 13:07:46,861 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:07:46,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:07:46,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:07:46,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:07:46,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:07:44" (1/4) ... [2022-01-10 13:07:46,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706a96e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:07:46, skipping insertion in model container [2022-01-10 13:07:46,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:45" (2/4) ... [2022-01-10 13:07:46,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706a96e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:07:46, skipping insertion in model container [2022-01-10 13:07:46,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:07:46" (3/4) ... [2022-01-10 13:07:46,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706a96e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:07:46, skipping insertion in model container [2022-01-10 13:07:46,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:07:46" (4/4) ... [2022-01-10 13:07:46,869 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-10 13:07:46,873 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:07:46,874 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 13:07:46,922 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:07:46,928 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 13:07:46,928 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 13:07:46,947 INFO L276 IsEmpty]: Start isEmpty. Operand has 250 states, 248 states have (on average 1.7258064516129032) internal successors, (428), 249 states have internal predecessors, (428), 0 states have call successors, (0), 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 13:07:46,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-10 13:07:46,960 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:07:46,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:46,961 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:07:46,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:07:46,967 INFO L85 PathProgramCache]: Analyzing trace with hash 814194061, now seen corresponding path program 1 times [2022-01-10 13:07:46,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:07:46,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244402856] [2022-01-10 13:07:46,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:07:46,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:07:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:07:47,728 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 13:07:47,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:07:47,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244402856] [2022-01-10 13:07:47,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244402856] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:07:47,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:07:47,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:07:47,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780006561] [2022-01-10 13:07:47,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:07:47,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:07:47,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:07:47,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:07:47,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:07:47,771 INFO L87 Difference]: Start difference. First operand has 250 states, 248 states have (on average 1.7258064516129032) internal successors, (428), 249 states have internal predecessors, (428), 0 states have call successors, (0), 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 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 13:07:50,108 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 13:07:50,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:07:50,386 INFO L93 Difference]: Finished difference Result 505 states and 837 transitions. [2022-01-10 13:07:50,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:07:50,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-01-10 13:07:50,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:07:50,409 INFO L225 Difference]: With dead ends: 505 [2022-01-10 13:07:50,410 INFO L226 Difference]: Without dead ends: 384 [2022-01-10 13:07:50,413 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 13:07:50,416 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 207 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 13:07:50,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 807 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 13:07:50,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-01-10 13:07:50,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 382. [2022-01-10 13:07:50,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 1.5013123359580052) internal successors, (572), 381 states have internal predecessors, (572), 0 states have call successors, (0), 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 13:07:50,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 572 transitions. [2022-01-10 13:07:50,542 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 572 transitions. Word has length 96 [2022-01-10 13:07:50,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:07:50,543 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 572 transitions. [2022-01-10 13:07:50,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 13:07:50,544 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 572 transitions. [2022-01-10 13:07:50,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 13:07:50,550 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:07:50,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:07:50,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:07:50,551 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:07:50,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:07:50,553 INFO L85 PathProgramCache]: Analyzing trace with hash -530773576, now seen corresponding path program 1 times [2022-01-10 13:07:50,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:07:50,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430297311] [2022-01-10 13:07:50,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:07:50,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:07:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:07:50,976 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 13:07:50,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:07:50,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430297311] [2022-01-10 13:07:50,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430297311] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:07:50,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:07:50,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:07:50,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729296226] [2022-01-10 13:07:50,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:07:50,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:07:50,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:07:50,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:07:50,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:07:50,985 INFO L87 Difference]: Start difference. First operand 382 states and 572 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 13:07:51,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:07:51,168 INFO L93 Difference]: Finished difference Result 646 states and 990 transitions. [2022-01-10 13:07:51,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:07:51,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-01-10 13:07:51,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:07:51,172 INFO L225 Difference]: With dead ends: 646 [2022-01-10 13:07:51,172 INFO L226 Difference]: Without dead ends: 644 [2022-01-10 13:07:51,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:07:51,175 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 512 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:07:51,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 981 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:07:51,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2022-01-10 13:07:51,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 386. [2022-01-10 13:07:51,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 1.4961038961038962) internal successors, (576), 385 states have internal predecessors, (576), 0 states have call successors, (0), 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 13:07:51,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 576 transitions. [2022-01-10 13:07:51,275 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 576 transitions. Word has length 97 [2022-01-10 13:07:51,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:07:51,276 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 576 transitions. [2022-01-10 13:07:51,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 13:07:51,277 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 576 transitions. [2022-01-10 13:07:51,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 13:07:51,281 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:07:51,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:51,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:07:51,289 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:07:51,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:07:51,290 INFO L85 PathProgramCache]: Analyzing trace with hash 726898634, now seen corresponding path program 1 times [2022-01-10 13:07:51,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:07:51,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027217130] [2022-01-10 13:07:51,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:07:51,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:07:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:07:51,771 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 13:07:51,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:07:51,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027217130] [2022-01-10 13:07:51,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027217130] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:07:51,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:07:51,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 13:07:51,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261149893] [2022-01-10 13:07:51,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:07:51,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 13:07:51,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:07:51,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 13:07:51,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 13:07:51,773 INFO L87 Difference]: Start difference. First operand 386 states and 576 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 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 13:07:54,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:07:54,008 INFO L93 Difference]: Finished difference Result 4241 states and 6652 transitions. [2022-01-10 13:07:54,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 13:07:54,009 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 13:07:54,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:07:54,025 INFO L225 Difference]: With dead ends: 4241 [2022-01-10 13:07:54,026 INFO L226 Difference]: Without dead ends: 3951 [2022-01-10 13:07:54,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2022-01-10 13:07:54,030 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 3573 mSDsluCounter, 4518 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3573 SdHoareTripleChecker+Valid, 5404 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 13:07:54,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3573 Valid, 5404 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 13:07:54,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2022-01-10 13:07:54,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 1827. [2022-01-10 13:07:54,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1826 states have (on average 1.5553121577217963) internal successors, (2840), 1826 states have internal predecessors, (2840), 0 states have call successors, (0), 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 13:07:54,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2840 transitions. [2022-01-10 13:07:54,492 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2840 transitions. Word has length 98 [2022-01-10 13:07:54,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:07:54,492 INFO L470 AbstractCegarLoop]: Abstraction has 1827 states and 2840 transitions. [2022-01-10 13:07:54,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 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 13:07:54,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2840 transitions. [2022-01-10 13:07:54,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 13:07:54,495 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:07:54,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:07:54,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:07:54,495 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:07:54,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:07:54,496 INFO L85 PathProgramCache]: Analyzing trace with hash -837544338, now seen corresponding path program 1 times [2022-01-10 13:07:54,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:07:54,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721444779] [2022-01-10 13:07:54,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:07:54,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:07:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:07:54,956 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 13:07:54,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:07:54,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721444779] [2022-01-10 13:07:54,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721444779] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:07:54,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:07:54,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 13:07:54,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720758281] [2022-01-10 13:07:54,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:07:54,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 13:07:54,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:07:54,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 13:07:54,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 13:07:54,959 INFO L87 Difference]: Start difference. First operand 1827 states and 2840 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 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 13:07:57,323 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 13:07:58,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:07:58,356 INFO L93 Difference]: Finished difference Result 3592 states and 5609 transitions. [2022-01-10 13:07:58,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:07:58,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 13:07:58,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:07:58,364 INFO L225 Difference]: With dead ends: 3592 [2022-01-10 13:07:58,364 INFO L226 Difference]: Without dead ends: 1831 [2022-01-10 13:07:58,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 13:07:58,367 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 443 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-10 13:07:58,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 868 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 418 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-01-10 13:07:58,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2022-01-10 13:07:58,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1827. [2022-01-10 13:07:58,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1826 states have (on average 1.5531215772179627) internal successors, (2836), 1826 states have internal predecessors, (2836), 0 states have call successors, (0), 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 13:07:58,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2836 transitions. [2022-01-10 13:07:58,779 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2836 transitions. Word has length 99 [2022-01-10 13:07:58,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:07:58,779 INFO L470 AbstractCegarLoop]: Abstraction has 1827 states and 2836 transitions. [2022-01-10 13:07:58,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 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 13:07:58,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2836 transitions. [2022-01-10 13:07:58,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 13:07:58,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:07:58,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:07:58,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:07:58,782 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:07:58,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:07:58,783 INFO L85 PathProgramCache]: Analyzing trace with hash -284040145, now seen corresponding path program 1 times [2022-01-10 13:07:58,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:07:58,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526165460] [2022-01-10 13:07:58,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:07:58,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:07:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:07:59,209 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 13:07:59,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:07:59,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526165460] [2022-01-10 13:07:59,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526165460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:07:59,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:07:59,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:07:59,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461904068] [2022-01-10 13:07:59,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:07:59,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:07:59,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:07:59,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:07:59,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:07:59,212 INFO L87 Difference]: Start difference. First operand 1827 states and 2836 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 13:08:01,356 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 13:08:02,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:08:02,027 INFO L93 Difference]: Finished difference Result 4215 states and 6604 transitions. [2022-01-10 13:08:02,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:08:02,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 13:08:02,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:08:02,041 INFO L225 Difference]: With dead ends: 4215 [2022-01-10 13:08:02,042 INFO L226 Difference]: Without dead ends: 2979 [2022-01-10 13:08:02,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:08:02,045 INFO L933 BasicCegarLoop]: 466 mSDtfsCounter, 316 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:08:02,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 982 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 13:08:02,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2022-01-10 13:08:02,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2977. [2022-01-10 13:08:02,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2977 states, 2976 states have (on average 1.5564516129032258) internal successors, (4632), 2976 states have internal predecessors, (4632), 0 states have call successors, (0), 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 13:08:02,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2977 states to 2977 states and 4632 transitions. [2022-01-10 13:08:02,623 INFO L78 Accepts]: Start accepts. Automaton has 2977 states and 4632 transitions. Word has length 99 [2022-01-10 13:08:02,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:08:02,624 INFO L470 AbstractCegarLoop]: Abstraction has 2977 states and 4632 transitions. [2022-01-10 13:08:02,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 13:08:02,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2977 states and 4632 transitions. [2022-01-10 13:08:02,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 13:08:02,627 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:08:02,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:08:02,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:08:02,627 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:08:02,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:08:02,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1790111126, now seen corresponding path program 1 times [2022-01-10 13:08:02,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:08:02,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850290834] [2022-01-10 13:08:02,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:08:02,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:08:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:08:02,851 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 13:08:02,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:08:02,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850290834] [2022-01-10 13:08:02,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850290834] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:08:02,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:08:02,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:08:02,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861244573] [2022-01-10 13:08:02,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:08:02,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:08:02,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:08:02,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:08:02,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:08:02,854 INFO L87 Difference]: Start difference. First operand 2977 states and 4632 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 13:08:03,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:08:03,624 INFO L93 Difference]: Finished difference Result 5552 states and 8688 transitions. [2022-01-10 13:08:03,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:08:03,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-01-10 13:08:03,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:08:03,642 INFO L225 Difference]: With dead ends: 5552 [2022-01-10 13:08:03,642 INFO L226 Difference]: Without dead ends: 3316 [2022-01-10 13:08:03,647 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 13:08:03,648 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 256 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:08:03,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 692 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:08:03,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3316 states. [2022-01-10 13:08:04,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3316 to 3314. [2022-01-10 13:08:04,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3314 states, 3313 states have (on average 1.5436160579535165) internal successors, (5114), 3313 states have internal predecessors, (5114), 0 states have call successors, (0), 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 13:08:04,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3314 states to 3314 states and 5114 transitions. [2022-01-10 13:08:04,387 INFO L78 Accepts]: Start accepts. Automaton has 3314 states and 5114 transitions. Word has length 100 [2022-01-10 13:08:04,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:08:04,388 INFO L470 AbstractCegarLoop]: Abstraction has 3314 states and 5114 transitions. [2022-01-10 13:08:04,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 13:08:04,388 INFO L276 IsEmpty]: Start isEmpty. Operand 3314 states and 5114 transitions. [2022-01-10 13:08:04,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 13:08:04,394 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:08:04,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:08:04,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:08:04,394 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:08:04,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:08:04,395 INFO L85 PathProgramCache]: Analyzing trace with hash 2064479665, now seen corresponding path program 1 times [2022-01-10 13:08:04,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:08:04,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818749877] [2022-01-10 13:08:04,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:08:04,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:08:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:08:04,562 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 13:08:04,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:08:04,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818749877] [2022-01-10 13:08:04,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818749877] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:08:04,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:08:04,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:08:04,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009308955] [2022-01-10 13:08:04,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:08:04,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:08:04,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:08:04,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:08:04,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:08:04,564 INFO L87 Difference]: Start difference. First operand 3314 states and 5114 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 13:08:05,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:08:05,629 INFO L93 Difference]: Finished difference Result 7867 states and 12216 transitions. [2022-01-10 13:08:05,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:08:05,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-01-10 13:08:05,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:08:05,648 INFO L225 Difference]: With dead ends: 7867 [2022-01-10 13:08:05,649 INFO L226 Difference]: Without dead ends: 4883 [2022-01-10 13:08:05,654 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 13:08:05,655 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 249 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:08:05,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 679 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:08:05,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4883 states. [2022-01-10 13:08:06,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4883 to 4872. [2022-01-10 13:08:06,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4872 states, 4871 states have (on average 1.5313077396838433) internal successors, (7459), 4871 states have internal predecessors, (7459), 0 states have call successors, (0), 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 13:08:06,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 7459 transitions. [2022-01-10 13:08:06,539 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 7459 transitions. Word has length 100 [2022-01-10 13:08:06,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:08:06,539 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 7459 transitions. [2022-01-10 13:08:06,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 13:08:06,540 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 7459 transitions. [2022-01-10 13:08:06,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 13:08:06,543 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:08:06,543 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:08:06,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:08:06,543 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:08:06,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:08:06,544 INFO L85 PathProgramCache]: Analyzing trace with hash 472275830, now seen corresponding path program 1 times [2022-01-10 13:08:06,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:08:06,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265716447] [2022-01-10 13:08:06,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:08:06,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:08:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:08:06,969 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 13:08:06,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:08:06,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265716447] [2022-01-10 13:08:06,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265716447] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:08:06,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:08:06,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 13:08:06,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168661216] [2022-01-10 13:08:06,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:08:06,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 13:08:06,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:08:06,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 13:08:06,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 13:08:06,971 INFO L87 Difference]: Start difference. First operand 4872 states and 7459 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 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 13:08:09,763 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:08:13,135 WARN L534 Checker$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 13:08:15,281 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:08:17,406 WARN L534 Checker$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 13:08:25,756 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 13:08:29,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:08:29,923 INFO L93 Difference]: Finished difference Result 38265 states and 58899 transitions. [2022-01-10 13:08:29,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 13:08:29,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-01-10 13:08:29,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:08:30,027 INFO L225 Difference]: With dead ends: 38265 [2022-01-10 13:08:30,027 INFO L226 Difference]: Without dead ends: 33529 [2022-01-10 13:08:30,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 13:08:30,048 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 1079 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 13 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 1959 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2022-01-10 13:08:30,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1079 Valid, 1959 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1296 Invalid, 5 Unknown, 0 Unchecked, 14.2s Time] [2022-01-10 13:08:30,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33529 states. [2022-01-10 13:08:35,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33529 to 17307. [2022-01-10 13:08:35,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17307 states, 17306 states have (on average 1.5285450132901883) internal successors, (26453), 17306 states have internal predecessors, (26453), 0 states have call successors, (0), 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 13:08:35,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17307 states to 17307 states and 26453 transitions. [2022-01-10 13:08:35,581 INFO L78 Accepts]: Start accepts. Automaton has 17307 states and 26453 transitions. Word has length 100 [2022-01-10 13:08:35,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:08:35,581 INFO L470 AbstractCegarLoop]: Abstraction has 17307 states and 26453 transitions. [2022-01-10 13:08:35,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 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 13:08:35,582 INFO L276 IsEmpty]: Start isEmpty. Operand 17307 states and 26453 transitions. [2022-01-10 13:08:35,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 13:08:35,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:08:35,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:08:35,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:08:35,587 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:08:35,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:08:35,587 INFO L85 PathProgramCache]: Analyzing trace with hash -2069638191, now seen corresponding path program 1 times [2022-01-10 13:08:35,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:08:35,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770092557] [2022-01-10 13:08:35,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:08:35,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:08:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:08:35,732 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 13:08:35,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:08:35,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770092557] [2022-01-10 13:08:35,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770092557] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:08:35,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:08:35,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:08:35,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893810314] [2022-01-10 13:08:35,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:08:35,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:08:35,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:08:35,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:08:35,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:08:35,735 INFO L87 Difference]: Start difference. First operand 17307 states and 26453 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 13:08:44,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:08:44,952 INFO L93 Difference]: Finished difference Result 47327 states and 72306 transitions. [2022-01-10 13:08:44,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:08:44,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-01-10 13:08:44,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:08:45,027 INFO L225 Difference]: With dead ends: 47327 [2022-01-10 13:08:45,028 INFO L226 Difference]: Without dead ends: 31057 [2022-01-10 13:08:45,053 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 13:08:45,056 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 225 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:08:45,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 668 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:08:45,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31057 states.