/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/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 [2022-01-11 06:35:35,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:35:35,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:35:35,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:35:35,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:35:35,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:35:35,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:35:35,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:35:35,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:35:35,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:35:35,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:35:35,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:35:35,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:35:35,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:35:35,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:35:35,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:35:35,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:35:35,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:35:35,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:35:35,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:35:35,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:35:35,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:35:35,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:35:35,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:35:35,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:35:35,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:35:35,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:35:35,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:35:35,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:35:35,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:35:35,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:35:35,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:35:35,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:35:35,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:35:35,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:35:35,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:35:35,854 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:35:35,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:35:35,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:35:35,856 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:35:35,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:35:35,857 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:35:35,874 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:35:35,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:35:35,874 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:35:35,874 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:35:35,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:35:35,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:35:35,875 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:35:35,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:35:35,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:35:35,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:35:35,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:35:35,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:35:35,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:35:35,877 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:35:35,877 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:35:35,877 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:35:35,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:35:35,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:35:35,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:35:35,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:35:35,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:35:35,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:35:35,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:35:35,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:35:35,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:35:35,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:35:35,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:35:35,879 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:35:35,879 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:35:35,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:35:35,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:35:35,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:35:35,880 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:35:35,880 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:35:36,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:35:36,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:35:36,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:35:36,071 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:35:36,072 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:35:36,073 INFO L432 ainManager$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 [2022-01-11 06:35:36,120 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b22f692c1/db7f412a2a324bf1b9092d62d1addaea/FLAG09dfff98b [2022-01-11 06:35:36,453 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:35:36,453 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 [2022-01-11 06:35:36,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b22f692c1/db7f412a2a324bf1b9092d62d1addaea/FLAG09dfff98b [2022-01-11 06:35:36,857 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b22f692c1/db7f412a2a324bf1b9092d62d1addaea [2022-01-11 06:35:36,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:35:36,860 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:35:36,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:35:36,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:35:36,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:35:36,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:35:36" (1/1) ... [2022-01-11 06:35:36,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78270435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:36, skipping insertion in model container [2022-01-11 06:35:36,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:35:36" (1/1) ... [2022-01-11 06:35:36,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:35:36,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:35:37,098 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] [2022-01-11 06:35:37,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:35:37,156 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:35:37,191 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] [2022-01-11 06:35:37,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:35:37,240 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:35:37,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:37 WrapperNode [2022-01-11 06:35:37,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:35:37,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:35:37,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:35:37,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:35:37,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:37" (1/1) ... [2022-01-11 06:35:37,257 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:37" (1/1) ... [2022-01-11 06:35:37,300 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 914 [2022-01-11 06:35:37,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:35:37,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:35:37,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:35:37,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:35:37,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:37" (1/1) ... [2022-01-11 06:35:37,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:37" (1/1) ... [2022-01-11 06:35:37,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:37" (1/1) ... [2022-01-11 06:35:37,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:37" (1/1) ... [2022-01-11 06:35:37,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:37" (1/1) ... [2022-01-11 06:35:37,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:37" (1/1) ... [2022-01-11 06:35:37,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:37" (1/1) ... [2022-01-11 06:35:37,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:35:37,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:35:37,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:35:37,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:35:37,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:37" (1/1) ... [2022-01-11 06:35:37,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:35:37,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:35:37,401 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 06:35:37,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 06:35:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:35:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:35:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:35:37,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:35:37,535 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:35:37,536 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:35:38,188 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:35:38,199 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:35:38,199 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:35:38,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:35:38 BoogieIcfgContainer [2022-01-11 06:35:38,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:35:38,202 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:35:38,202 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:35:38,203 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:35:38,205 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:35:38" (1/1) ... [2022-01-11 06:35:38,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:35:38 BasicIcfg [2022-01-11 06:35:38,734 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:35:38,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:35:38,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:35:38,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:35:38,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:35:36" (1/4) ... [2022-01-11 06:35:38,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246917aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:35:38, skipping insertion in model container [2022-01-11 06:35:38,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:37" (2/4) ... [2022-01-11 06:35:38,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246917aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:35:38, skipping insertion in model container [2022-01-11 06:35:38,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:35:38" (3/4) ... [2022-01-11 06:35:38,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246917aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:35:38, skipping insertion in model container [2022-01-11 06:35:38,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:35:38" (4/4) ... [2022-01-11 06:35:38,742 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-11 06:35:38,748 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:35:38,748 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:35:38,789 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:35:38,795 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 06:35:38,795 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:35:38,809 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) [2022-01-11 06:35:38,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-11 06:35:38,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:35:38,819 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] [2022-01-11 06:35:38,819 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:35:38,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:35:38,823 INFO L85 PathProgramCache]: Analyzing trace with hash 814194061, now seen corresponding path program 1 times [2022-01-11 06:35:38,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:35:38,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927717218] [2022-01-11 06:35:38,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:35:38,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:35:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:35:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:35:39,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:35:39,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927717218] [2022-01-11 06:35:39,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927717218] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:35:39,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:35:39,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:35:39,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128086875] [2022-01-11 06:35:39,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:35:39,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:35:39,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:35:39,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:35:39,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:35:39,460 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) [2022-01-11 06:35:41,681 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:35:41,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:35:41,867 INFO L93 Difference]: Finished difference Result 505 states and 837 transitions. [2022-01-11 06:35:41,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:35:41,873 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 [2022-01-11 06:35:41,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:35:41,881 INFO L225 Difference]: With dead ends: 505 [2022-01-11 06:35:41,881 INFO L226 Difference]: Without dead ends: 384 [2022-01-11 06:35:41,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:35:41,892 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 207 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s 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, 2.3s IncrementalHoareTripleChecker+Time [2022-01-11 06:35:41,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 807 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-01-11 06:35:41,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-01-11 06:35:41,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 382. [2022-01-11 06:35:41,988 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) [2022-01-11 06:35:41,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 572 transitions. [2022-01-11 06:35:41,993 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 572 transitions. Word has length 96 [2022-01-11 06:35:41,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:35:41,994 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 572 transitions. [2022-01-11 06:35:41,995 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) [2022-01-11 06:35:41,995 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 572 transitions. [2022-01-11 06:35:42,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-11 06:35:42,000 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:35:42,001 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] [2022-01-11 06:35:42,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:35:42,001 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:35:42,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:35:42,003 INFO L85 PathProgramCache]: Analyzing trace with hash -530773576, now seen corresponding path program 1 times [2022-01-11 06:35:42,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:35:42,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368373231] [2022-01-11 06:35:42,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:35:42,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:35:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:35:42,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:35:42,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:35:42,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368373231] [2022-01-11 06:35:42,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368373231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:35:42,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:35:42,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:35:42,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855869792] [2022-01-11 06:35:42,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:35:42,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:35:42,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:35:42,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:35:42,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:35:42,311 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) [2022-01-11 06:35:42,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:35:42,450 INFO L93 Difference]: Finished difference Result 646 states and 990 transitions. [2022-01-11 06:35:42,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:35:42,451 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 [2022-01-11 06:35:42,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:35:42,456 INFO L225 Difference]: With dead ends: 646 [2022-01-11 06:35:42,457 INFO L226 Difference]: Without dead ends: 644 [2022-01-11 06:35:42,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:35:42,458 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 512 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:35:42,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 981 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:35:42,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2022-01-11 06:35:42,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 386. [2022-01-11 06:35:42,516 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) [2022-01-11 06:35:42,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 576 transitions. [2022-01-11 06:35:42,517 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 576 transitions. Word has length 97 [2022-01-11 06:35:42,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:35:42,518 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 576 transitions. [2022-01-11 06:35:42,518 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) [2022-01-11 06:35:42,518 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 576 transitions. [2022-01-11 06:35:42,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 06:35:42,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:35:42,523 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] [2022-01-11 06:35:42,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:35:42,527 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:35:42,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:35:42,528 INFO L85 PathProgramCache]: Analyzing trace with hash 726898634, now seen corresponding path program 1 times [2022-01-11 06:35:42,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:35:42,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282604310] [2022-01-11 06:35:42,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:35:42,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:35:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:35:42,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:35:42,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:35:42,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282604310] [2022-01-11 06:35:42,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282604310] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:35:42,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:35:42,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 06:35:42,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468661492] [2022-01-11 06:35:42,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:35:42,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 06:35:42,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:35:42,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 06:35:42,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-11 06:35:42,904 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) [2022-01-11 06:35:44,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:35:44,840 INFO L93 Difference]: Finished difference Result 4241 states and 6652 transitions. [2022-01-11 06:35:44,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-11 06:35:44,840 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 [2022-01-11 06:35:44,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:35:44,853 INFO L225 Difference]: With dead ends: 4241 [2022-01-11 06:35:44,853 INFO L226 Difference]: Without dead ends: 3951 [2022-01-11 06:35:44,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2022-01-11 06:35:44,856 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 3573 mSDsluCounter, 4518 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-01-11 06:35:44,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3573 Valid, 5404 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-11 06:35:44,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2022-01-11 06:35:45,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 1827. [2022-01-11 06:35:45,164 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) [2022-01-11 06:35:45,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2840 transitions. [2022-01-11 06:35:45,184 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2840 transitions. Word has length 98 [2022-01-11 06:35:45,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:35:45,184 INFO L470 AbstractCegarLoop]: Abstraction has 1827 states and 2840 transitions. [2022-01-11 06:35:45,184 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) [2022-01-11 06:35:45,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2840 transitions. [2022-01-11 06:35:45,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 06:35:45,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:35:45,186 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] [2022-01-11 06:35:45,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:35:45,187 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:35:45,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:35:45,187 INFO L85 PathProgramCache]: Analyzing trace with hash -837544338, now seen corresponding path program 1 times [2022-01-11 06:35:45,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:35:45,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188950852] [2022-01-11 06:35:45,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:35:45,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:35:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:35:45,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:35:45,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:35:45,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188950852] [2022-01-11 06:35:45,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188950852] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:35:45,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:35:45,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:35:45,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057617639] [2022-01-11 06:35:45,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:35:45,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 06:35:45,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:35:45,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 06:35:45,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:35:45,569 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) [2022-01-11 06:35:47,889 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:35:50,550 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:35:52,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:35:52,569 INFO L93 Difference]: Finished difference Result 7008 states and 10995 transitions. [2022-01-11 06:35:52,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 06:35:52,571 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 [2022-01-11 06:35:52,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:35:52,588 INFO L225 Difference]: With dead ends: 7008 [2022-01-11 06:35:52,588 INFO L226 Difference]: Without dead ends: 5247 [2022-01-11 06:35:52,591 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 [2022-01-11 06:35:52,592 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1412 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 22 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-01-11 06:35:52,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1412 Valid, 1167 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 736 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2022-01-11 06:35:52,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5247 states. [2022-01-11 06:35:53,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5247 to 4381. [2022-01-11 06:35:53,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4381 states, 4380 states have (on average 1.5621004566210046) internal successors, (6842), 4380 states have internal predecessors, (6842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:53,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4381 states to 4381 states and 6842 transitions. [2022-01-11 06:35:53,446 INFO L78 Accepts]: Start accepts. Automaton has 4381 states and 6842 transitions. Word has length 99 [2022-01-11 06:35:53,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:35:53,446 INFO L470 AbstractCegarLoop]: Abstraction has 4381 states and 6842 transitions. [2022-01-11 06:35:53,447 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) [2022-01-11 06:35:53,447 INFO L276 IsEmpty]: Start isEmpty. Operand 4381 states and 6842 transitions. [2022-01-11 06:35:53,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 06:35:53,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:35:53,449 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] [2022-01-11 06:35:53,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:35:53,449 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:35:53,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:35:53,450 INFO L85 PathProgramCache]: Analyzing trace with hash -284040145, now seen corresponding path program 1 times [2022-01-11 06:35:53,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:35:53,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974119731] [2022-01-11 06:35:53,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:35:53,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:35:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:35:53,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:35:53,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:35:53,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974119731] [2022-01-11 06:35:53,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974119731] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:35:53,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:35:53,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:35:53,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416363916] [2022-01-11 06:35:53,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:35:53,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:35:53,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:35:53,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:35:53,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:35:53,794 INFO L87 Difference]: Start difference. First operand 4381 states and 6842 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) [2022-01-11 06:35:55,825 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:35:56,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:35:56,824 INFO L93 Difference]: Finished difference Result 7897 states and 12352 transitions. [2022-01-11 06:35:56,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:35:56,825 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 [2022-01-11 06:35:56,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:35:56,837 INFO L225 Difference]: With dead ends: 7897 [2022-01-11 06:35:56,837 INFO L226 Difference]: Without dead ends: 4335 [2022-01-11 06:35:56,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:35:56,841 INFO L933 BasicCegarLoop]: 466 mSDtfsCounter, 316 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:35:56,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 982 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 06:35:56,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4335 states. [2022-01-11 06:35:57,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4335 to 4333. [2022-01-11 06:35:57,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4333 states, 4332 states have (on average 1.554478301015697) internal successors, (6734), 4332 states have internal predecessors, (6734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:57,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4333 states to 4333 states and 6734 transitions. [2022-01-11 06:35:57,701 INFO L78 Accepts]: Start accepts. Automaton has 4333 states and 6734 transitions. Word has length 99 [2022-01-11 06:35:57,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:35:57,701 INFO L470 AbstractCegarLoop]: Abstraction has 4333 states and 6734 transitions. [2022-01-11 06:35:57,701 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) [2022-01-11 06:35:57,701 INFO L276 IsEmpty]: Start isEmpty. Operand 4333 states and 6734 transitions. [2022-01-11 06:35:57,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-11 06:35:57,703 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:35:57,703 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] [2022-01-11 06:35:57,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:35:57,703 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:35:57,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:35:57,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1790111126, now seen corresponding path program 1 times [2022-01-11 06:35:57,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:35:57,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175759041] [2022-01-11 06:35:57,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:35:57,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:35:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:35:57,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:35:57,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:35:57,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175759041] [2022-01-11 06:35:57,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175759041] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:35:57,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:35:57,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:35:57,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863788569] [2022-01-11 06:35:57,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:35:57,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:35:57,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:35:57,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:35:57,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:35:57,846 INFO L87 Difference]: Start difference. First operand 4333 states and 6734 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) [2022-01-11 06:35:58,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:35:58,931 INFO L93 Difference]: Finished difference Result 8196 states and 12782 transitions. [2022-01-11 06:35:58,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:35:58,931 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 [2022-01-11 06:35:58,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:35:58,945 INFO L225 Difference]: With dead ends: 8196 [2022-01-11 06:35:58,945 INFO L226 Difference]: Without dead ends: 4836 [2022-01-11 06:35:58,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:35:58,949 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 [2022-01-11 06:35:58,949 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] [2022-01-11 06:35:58,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4836 states. [2022-01-11 06:35:59,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4836 to 4834. [2022-01-11 06:35:59,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4834 states, 4833 states have (on average 1.542727084626526) internal successors, (7456), 4833 states have internal predecessors, (7456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:59,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4834 states to 4834 states and 7456 transitions. [2022-01-11 06:35:59,937 INFO L78 Accepts]: Start accepts. Automaton has 4834 states and 7456 transitions. Word has length 100 [2022-01-11 06:35:59,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:35:59,937 INFO L470 AbstractCegarLoop]: Abstraction has 4834 states and 7456 transitions. [2022-01-11 06:35:59,937 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) [2022-01-11 06:35:59,938 INFO L276 IsEmpty]: Start isEmpty. Operand 4834 states and 7456 transitions. [2022-01-11 06:35:59,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-11 06:35:59,940 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:35:59,940 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] [2022-01-11 06:35:59,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:35:59,940 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:35:59,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:35:59,940 INFO L85 PathProgramCache]: Analyzing trace with hash 2064479665, now seen corresponding path program 1 times [2022-01-11 06:35:59,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:35:59,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136404559] [2022-01-11 06:35:59,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:35:59,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:35:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:36:00,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:36:00,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:36:00,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136404559] [2022-01-11 06:36:00,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136404559] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:36:00,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:36:00,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:36:00,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317239543] [2022-01-11 06:36:00,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:36:00,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:36:00,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:36:00,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:36:00,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:36:00,049 INFO L87 Difference]: Start difference. First operand 4834 states and 7456 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) [2022-01-11 06:36:01,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:36:01,537 INFO L93 Difference]: Finished difference Result 11675 states and 18100 transitions. [2022-01-11 06:36:01,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:36:01,537 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 [2022-01-11 06:36:01,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:36:01,559 INFO L225 Difference]: With dead ends: 11675 [2022-01-11 06:36:01,560 INFO L226 Difference]: Without dead ends: 7171 [2022-01-11 06:36:01,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:36:01,566 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 [2022-01-11 06:36:01,567 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] [2022-01-11 06:36:01,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7171 states. [2022-01-11 06:36:03,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7171 to 7144. [2022-01-11 06:36:03,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7144 states, 7143 states have (on average 1.5339493210135797) internal successors, (10957), 7143 states have internal predecessors, (10957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:36:03,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7144 states to 7144 states and 10957 transitions. [2022-01-11 06:36:03,036 INFO L78 Accepts]: Start accepts. Automaton has 7144 states and 10957 transitions. Word has length 100 [2022-01-11 06:36:03,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:36:03,036 INFO L470 AbstractCegarLoop]: Abstraction has 7144 states and 10957 transitions. [2022-01-11 06:36:03,037 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) [2022-01-11 06:36:03,037 INFO L276 IsEmpty]: Start isEmpty. Operand 7144 states and 10957 transitions. [2022-01-11 06:36:03,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-11 06:36:03,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:36:03,040 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] [2022-01-11 06:36:03,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:36:03,040 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:36:03,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:36:03,056 INFO L85 PathProgramCache]: Analyzing trace with hash 472275830, now seen corresponding path program 1 times [2022-01-11 06:36:03,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:36:03,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150590577] [2022-01-11 06:36:03,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:36:03,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:36:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:36:03,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:36:03,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:36:03,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150590577] [2022-01-11 06:36:03,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150590577] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:36:03,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:36:03,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:36:03,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960030227] [2022-01-11 06:36:03,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:36:03,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:36:03,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:36:03,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:36:03,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:36:03,370 INFO L87 Difference]: Start difference. First operand 7144 states and 10957 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) [2022-01-11 06:36:05,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:36:09,698 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:36:23,983 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:36:26,239 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:36:28,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:36:31,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:36:31,885 INFO L93 Difference]: Finished difference Result 56612 states and 86930 transitions. [2022-01-11 06:36:31,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 06:36:31,887 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 [2022-01-11 06:36:31,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:36:32,004 INFO L225 Difference]: With dead ends: 56612 [2022-01-11 06:36:32,006 INFO L226 Difference]: Without dead ends: 49623 [2022-01-11 06:36:32,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-11 06:36:32,028 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 1451 mSDsluCounter, 1058 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 17 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:36:32,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1451 Valid, 1655 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1112 Invalid, 5 Unknown, 0 Unchecked, 14.0s Time] [2022-01-11 06:36:32,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49623 states. [2022-01-11 06:36:43,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49623 to 37503. [2022-01-11 06:36:43,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37503 states, 37502 states have (on average 1.5243720334915472) internal successors, (57167), 37502 states have internal predecessors, (57167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:36:44,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37503 states to 37503 states and 57167 transitions. [2022-01-11 06:36:44,045 INFO L78 Accepts]: Start accepts. Automaton has 37503 states and 57167 transitions. Word has length 100 [2022-01-11 06:36:44,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:36:44,045 INFO L470 AbstractCegarLoop]: Abstraction has 37503 states and 57167 transitions. [2022-01-11 06:36:44,045 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) [2022-01-11 06:36:44,046 INFO L276 IsEmpty]: Start isEmpty. Operand 37503 states and 57167 transitions. [2022-01-11 06:36:44,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-11 06:36:44,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:36:44,054 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] [2022-01-11 06:36:44,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:36:44,054 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:36:44,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:36:44,055 INFO L85 PathProgramCache]: Analyzing trace with hash -2069638191, now seen corresponding path program 1 times [2022-01-11 06:36:44,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:36:44,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370336757] [2022-01-11 06:36:44,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:36:44,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:36:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:36:44,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:36:44,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:36:44,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370336757] [2022-01-11 06:36:44,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370336757] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:36:44,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:36:44,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:36:44,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402885465] [2022-01-11 06:36:44,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:36:44,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:36:44,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:36:44,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:36:44,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:36:44,191 INFO L87 Difference]: Start difference. First operand 37503 states and 57167 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)