/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_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:18:21,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:18:21,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:18:21,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:18:21,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:18:21,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:18:21,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:18:21,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:18:21,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:18:21,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:18:21,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:18:21,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:18:21,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:18:21,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:18:21,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:18:21,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:18:21,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:18:21,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:18:21,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:18:21,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:18:21,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:18:21,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:18:21,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:18:21,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:18:21,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 13:18:21,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 13:18:21,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 13:18:21,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 13:18:21,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 13:18:21,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 13:18:21,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 13:18:21,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 13:18:21,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 13:18:21,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:18:21,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:18:21,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:18:21,951 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 13:18:21,968 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:18:21,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:18:21,969 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:18:21,969 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:18:21,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:18:21,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:18:21,970 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:18:21,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:18:21,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:18:21,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:18:21,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:18:21,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:18:21,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:18:21,970 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:18:21,970 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:18:21,970 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:18:21,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:18:21,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:18:21,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:18:21,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:18:21,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:18:21,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:18:21,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:18:21,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:18:21,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:18:21,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:18:21,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:18:21,971 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:18:21,972 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:18:21,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:18:21,972 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:18:21,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:18:21,973 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:18:21,973 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:18:22,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:18:22,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:18:22,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:18:22,173 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:18:22,174 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:18:22,175 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-01-10 13:18:22,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e17171a7f/a557d4759da84c6b91dbf595be66db68/FLAG6f3e72d01 [2022-01-10 13:18:22,659 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:18:22,659 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-01-10 13:18:22,676 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e17171a7f/a557d4759da84c6b91dbf595be66db68/FLAG6f3e72d01 [2022-01-10 13:18:22,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e17171a7f/a557d4759da84c6b91dbf595be66db68 [2022-01-10 13:18:22,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:18:22,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:18:22,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:18:22,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:18:22,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:18:22,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:18:22" (1/1) ... [2022-01-10 13:18:22,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68c71ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:22, skipping insertion in model container [2022-01-10 13:18:22,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:18:22" (1/1) ... [2022-01-10 13:18:22,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:18:23,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:18:23,474 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_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[34889,34902] [2022-01-10 13:18:23,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:18:23,597 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:18:23,789 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_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[34889,34902] [2022-01-10 13:18:23,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:18:23,893 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:18:23,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:23 WrapperNode [2022-01-10 13:18:23,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:18:23,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:18:23,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:18:23,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:18:23,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:23" (1/1) ... [2022-01-10 13:18:23,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:23" (1/1) ... [2022-01-10 13:18:23,996 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2874 [2022-01-10 13:18:23,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:18:23,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:18:23,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:18:23,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:18:24,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:23" (1/1) ... [2022-01-10 13:18:24,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:23" (1/1) ... [2022-01-10 13:18:24,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:23" (1/1) ... [2022-01-10 13:18:24,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:23" (1/1) ... [2022-01-10 13:18:24,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:23" (1/1) ... [2022-01-10 13:18:24,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:23" (1/1) ... [2022-01-10 13:18:24,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:23" (1/1) ... [2022-01-10 13:18:24,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:18:24,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:18:24,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:18:24,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:18:24,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:23" (1/1) ... [2022-01-10 13:18:24,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:18:24,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:18:24,170 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 13:18:24,187 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 13:18:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:18:24,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:18:24,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:18:24,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:18:24,409 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:18:24,410 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:18:25,764 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:18:25,776 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:18:25,776 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 13:18:25,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:18:25 BoogieIcfgContainer [2022-01-10 13:18:25,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:18:25,779 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:18:25,779 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:18:25,780 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:18:25,782 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:18:25" (1/1) ... [2022-01-10 13:18:26,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:18:26 BasicIcfg [2022-01-10 13:18:26,764 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:18:26,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:18:26,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:18:26,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:18:26,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:18:22" (1/4) ... [2022-01-10 13:18:26,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79917ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:18:26, skipping insertion in model container [2022-01-10 13:18:26,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:23" (2/4) ... [2022-01-10 13:18:26,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79917ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:18:26, skipping insertion in model container [2022-01-10 13:18:26,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:18:25" (3/4) ... [2022-01-10 13:18:26,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79917ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:18:26, skipping insertion in model container [2022-01-10 13:18:26,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:18:26" (4/4) ... [2022-01-10 13:18:26,771 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-10 13:18:26,774 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:18:26,775 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 13:18:26,819 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:18:26,824 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 13:18:26,824 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 13:18:26,851 INFO L276 IsEmpty]: Start isEmpty. Operand has 778 states, 776 states have (on average 1.7796391752577319) internal successors, (1381), 777 states have internal predecessors, (1381), 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 13:18:26,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-01-10 13:18:26,876 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:26,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:18:26,877 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:18:26,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:26,881 INFO L85 PathProgramCache]: Analyzing trace with hash 494702390, now seen corresponding path program 1 times [2022-01-10 13:18:26,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:26,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364007948] [2022-01-10 13:18:26,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:26,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:27,603 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 13:18:27,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:27,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364007948] [2022-01-10 13:18:27,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364007948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:27,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:27,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:18:27,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728722737] [2022-01-10 13:18:27,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:27,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:18:27,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:27,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:18:27,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:18:27,640 INFO L87 Difference]: Start difference. First operand has 778 states, 776 states have (on average 1.7796391752577319) internal successors, (1381), 777 states have internal predecessors, (1381), 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 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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 13:18:27,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:27,901 INFO L93 Difference]: Finished difference Result 2254 states and 4002 transitions. [2022-01-10 13:18:27,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:18:27,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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 308 [2022-01-10 13:18:27,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:27,924 INFO L225 Difference]: With dead ends: 2254 [2022-01-10 13:18:27,924 INFO L226 Difference]: Without dead ends: 1517 [2022-01-10 13:18:27,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 13:18:27,933 INFO L933 BasicCegarLoop]: 2084 mSDtfsCounter, 3217 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3217 SdHoareTripleChecker+Valid, 3388 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:27,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3217 Valid, 3388 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:18:27,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2022-01-10 13:18:28,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1515. [2022-01-10 13:18:28,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1514 states have (on average 1.5686922060766182) internal successors, (2375), 1514 states have internal predecessors, (2375), 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 13:18:28,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 2375 transitions. [2022-01-10 13:18:28,052 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 2375 transitions. Word has length 308 [2022-01-10 13:18:28,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:28,054 INFO L470 AbstractCegarLoop]: Abstraction has 1515 states and 2375 transitions. [2022-01-10 13:18:28,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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 13:18:28,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 2375 transitions. [2022-01-10 13:18:28,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-01-10 13:18:28,058 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:28,058 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:18:28,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:18:28,058 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:18:28,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:28,060 INFO L85 PathProgramCache]: Analyzing trace with hash -343463887, now seen corresponding path program 1 times [2022-01-10 13:18:28,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:28,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806960210] [2022-01-10 13:18:28,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:28,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:28,353 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 13:18:28,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:28,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806960210] [2022-01-10 13:18:28,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806960210] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:28,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:28,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:18:28,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920901257] [2022-01-10 13:18:28,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:28,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:18:28,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:28,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:18:28,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:18:28,359 INFO L87 Difference]: Start difference. First operand 1515 states and 2375 transitions. Second operand has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 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 13:18:28,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:28,696 INFO L93 Difference]: Finished difference Result 5931 states and 9275 transitions. [2022-01-10 13:18:28,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:18:28,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 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 310 [2022-01-10 13:18:28,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:28,712 INFO L225 Difference]: With dead ends: 5931 [2022-01-10 13:18:28,713 INFO L226 Difference]: Without dead ends: 4428 [2022-01-10 13:18:28,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 13:18:28,720 INFO L933 BasicCegarLoop]: 2361 mSDtfsCounter, 4573 mSDsluCounter, 2290 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4573 SdHoareTripleChecker+Valid, 4651 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:28,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4573 Valid, 4651 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:18:28,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4428 states. [2022-01-10 13:18:28,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4428 to 2964. [2022-01-10 13:18:28,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2964 states, 2963 states have (on average 1.5568680391495107) internal successors, (4613), 2963 states have internal predecessors, (4613), 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 13:18:28,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2964 states to 2964 states and 4613 transitions. [2022-01-10 13:18:28,858 INFO L78 Accepts]: Start accepts. Automaton has 2964 states and 4613 transitions. Word has length 310 [2022-01-10 13:18:28,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:28,860 INFO L470 AbstractCegarLoop]: Abstraction has 2964 states and 4613 transitions. [2022-01-10 13:18:28,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 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 13:18:28,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2964 states and 4613 transitions. [2022-01-10 13:18:28,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-01-10 13:18:28,866 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:28,867 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:18:28,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:18:28,869 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:18:28,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:28,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1360727238, now seen corresponding path program 1 times [2022-01-10 13:18:28,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:28,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029599503] [2022-01-10 13:18:28,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:28,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:29,041 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 13:18:29,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:29,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029599503] [2022-01-10 13:18:29,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029599503] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:29,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:29,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:18:29,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40699960] [2022-01-10 13:18:29,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:29,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:18:29,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:29,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:18:29,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:18:29,044 INFO L87 Difference]: Start difference. First operand 2964 states and 4613 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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 13:18:29,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:29,244 INFO L93 Difference]: Finished difference Result 8835 states and 13741 transitions. [2022-01-10 13:18:29,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:18:29,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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 312 [2022-01-10 13:18:29,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:29,262 INFO L225 Difference]: With dead ends: 8835 [2022-01-10 13:18:29,263 INFO L226 Difference]: Without dead ends: 5900 [2022-01-10 13:18:29,271 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 13:18:29,274 INFO L933 BasicCegarLoop]: 2418 mSDtfsCounter, 1200 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 3625 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:29,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1200 Valid, 3625 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:29,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5900 states. [2022-01-10 13:18:29,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5900 to 2978. [2022-01-10 13:18:29,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2978 states, 2977 states have (on average 1.5552569701041317) internal successors, (4630), 2977 states have internal predecessors, (4630), 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 13:18:29,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 4630 transitions. [2022-01-10 13:18:29,508 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 4630 transitions. Word has length 312 [2022-01-10 13:18:29,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:29,508 INFO L470 AbstractCegarLoop]: Abstraction has 2978 states and 4630 transitions. [2022-01-10 13:18:29,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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 13:18:29,509 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 4630 transitions. [2022-01-10 13:18:29,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-01-10 13:18:29,515 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:29,515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:18:29,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:18:29,516 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:18:29,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:29,517 INFO L85 PathProgramCache]: Analyzing trace with hash -2129649773, now seen corresponding path program 1 times [2022-01-10 13:18:29,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:29,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425654737] [2022-01-10 13:18:29,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:29,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:29,787 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 13:18:29,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:29,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425654737] [2022-01-10 13:18:29,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425654737] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:29,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:29,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:18:29,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690898307] [2022-01-10 13:18:29,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:29,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:18:29,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:29,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:18:29,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:18:29,789 INFO L87 Difference]: Start difference. First operand 2978 states and 4630 transitions. Second operand has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 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 13:18:30,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:30,344 INFO L93 Difference]: Finished difference Result 11599 states and 17999 transitions. [2022-01-10 13:18:30,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:18:30,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 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 314 [2022-01-10 13:18:30,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:30,371 INFO L225 Difference]: With dead ends: 11599 [2022-01-10 13:18:30,371 INFO L226 Difference]: Without dead ends: 8662 [2022-01-10 13:18:30,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 13:18:30,377 INFO L933 BasicCegarLoop]: 2507 mSDtfsCounter, 3963 mSDsluCounter, 3425 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3963 SdHoareTripleChecker+Valid, 5932 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:30,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3963 Valid, 5932 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 13:18:30,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8662 states. [2022-01-10 13:18:30,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8662 to 5810. [2022-01-10 13:18:30,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5810 states, 5809 states have (on average 1.5439834739197797) internal successors, (8969), 5809 states have internal predecessors, (8969), 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 13:18:30,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5810 states to 5810 states and 8969 transitions. [2022-01-10 13:18:30,753 INFO L78 Accepts]: Start accepts. Automaton has 5810 states and 8969 transitions. Word has length 314 [2022-01-10 13:18:30,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:30,753 INFO L470 AbstractCegarLoop]: Abstraction has 5810 states and 8969 transitions. [2022-01-10 13:18:30,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 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 13:18:30,753 INFO L276 IsEmpty]: Start isEmpty. Operand 5810 states and 8969 transitions. [2022-01-10 13:18:30,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-01-10 13:18:30,761 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:30,762 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:18:30,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:18:30,762 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:18:30,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:30,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1557870307, now seen corresponding path program 1 times [2022-01-10 13:18:30,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:30,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199858109] [2022-01-10 13:18:30,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:30,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:30,906 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 13:18:30,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:30,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199858109] [2022-01-10 13:18:30,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199858109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:30,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:30,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:18:30,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501910115] [2022-01-10 13:18:30,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:30,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:18:30,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:30,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:18:30,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:18:30,909 INFO L87 Difference]: Start difference. First operand 5810 states and 8969 transitions. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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 13:18:31,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:31,715 INFO L93 Difference]: Finished difference Result 20769 states and 31810 transitions. [2022-01-10 13:18:31,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:18:31,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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 314 [2022-01-10 13:18:31,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:31,752 INFO L225 Difference]: With dead ends: 20769 [2022-01-10 13:18:31,752 INFO L226 Difference]: Without dead ends: 15503 [2022-01-10 13:18:31,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 13:18:31,762 INFO L933 BasicCegarLoop]: 2329 mSDtfsCounter, 3057 mSDsluCounter, 3483 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3057 SdHoareTripleChecker+Valid, 5812 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:31,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3057 Valid, 5812 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:31,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15503 states. [2022-01-10 13:18:32,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15503 to 6271. [2022-01-10 13:18:32,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6271 states, 6270 states have (on average 1.5545454545454545) internal successors, (9747), 6270 states have internal predecessors, (9747), 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 13:18:32,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6271 states to 6271 states and 9747 transitions. [2022-01-10 13:18:32,236 INFO L78 Accepts]: Start accepts. Automaton has 6271 states and 9747 transitions. Word has length 314 [2022-01-10 13:18:32,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:32,237 INFO L470 AbstractCegarLoop]: Abstraction has 6271 states and 9747 transitions. [2022-01-10 13:18:32,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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 13:18:32,239 INFO L276 IsEmpty]: Start isEmpty. Operand 6271 states and 9747 transitions. [2022-01-10 13:18:32,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-01-10 13:18:32,250 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:32,251 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:18:32,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:18:32,251 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:18:32,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:32,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1845462570, now seen corresponding path program 1 times [2022-01-10 13:18:32,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:32,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965944467] [2022-01-10 13:18:32,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:32,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:32,395 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 13:18:32,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:32,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965944467] [2022-01-10 13:18:32,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965944467] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:32,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:32,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:18:32,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330495065] [2022-01-10 13:18:32,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:32,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:18:32,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:32,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:18:32,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:18:32,397 INFO L87 Difference]: Start difference. First operand 6271 states and 9747 transitions. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 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 13:18:33,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:33,195 INFO L93 Difference]: Finished difference Result 21614 states and 33219 transitions. [2022-01-10 13:18:33,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:18:33,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 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 316 [2022-01-10 13:18:33,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:33,223 INFO L225 Difference]: With dead ends: 21614 [2022-01-10 13:18:33,223 INFO L226 Difference]: Without dead ends: 16316 [2022-01-10 13:18:33,231 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 13:18:33,232 INFO L933 BasicCegarLoop]: 2965 mSDtfsCounter, 2830 mSDsluCounter, 3485 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2830 SdHoareTripleChecker+Valid, 6450 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:33,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2830 Valid, 6450 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:33,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16316 states. [2022-01-10 13:18:33,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16316 to 7071. [2022-01-10 13:18:33,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7071 states, 7070 states have (on average 1.5702970297029704) internal successors, (11102), 7070 states have internal predecessors, (11102), 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 13:18:33,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7071 states to 7071 states and 11102 transitions. [2022-01-10 13:18:33,673 INFO L78 Accepts]: Start accepts. Automaton has 7071 states and 11102 transitions. Word has length 316 [2022-01-10 13:18:33,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:33,674 INFO L470 AbstractCegarLoop]: Abstraction has 7071 states and 11102 transitions. [2022-01-10 13:18:33,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 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 13:18:33,674 INFO L276 IsEmpty]: Start isEmpty. Operand 7071 states and 11102 transitions. [2022-01-10 13:18:33,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-01-10 13:18:33,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:33,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:18:33,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:18:33,684 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:18:33,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:33,685 INFO L85 PathProgramCache]: Analyzing trace with hash 288134347, now seen corresponding path program 1 times [2022-01-10 13:18:33,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:33,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454811324] [2022-01-10 13:18:33,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:33,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:33,809 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 13:18:33,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:33,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454811324] [2022-01-10 13:18:33,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454811324] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:33,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:33,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:18:33,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122292578] [2022-01-10 13:18:33,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:33,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:18:33,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:33,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:18:33,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:18:33,816 INFO L87 Difference]: Start difference. First operand 7071 states and 11102 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 13:18:34,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:34,456 INFO L93 Difference]: Finished difference Result 13753 states and 21473 transitions. [2022-01-10 13:18:34,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:18:34,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 318 [2022-01-10 13:18:34,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:34,475 INFO L225 Difference]: With dead ends: 13753 [2022-01-10 13:18:34,476 INFO L226 Difference]: Without dead ends: 10144 [2022-01-10 13:18:34,482 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 13:18:34,483 INFO L933 BasicCegarLoop]: 1263 mSDtfsCounter, 1190 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:34,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1190 Valid, 2474 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:34,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10144 states. [2022-01-10 13:18:34,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10144 to 7071. [2022-01-10 13:18:34,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7071 states, 7070 states have (on average 1.5694483734087694) internal successors, (11096), 7070 states have internal predecessors, (11096), 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 13:18:34,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7071 states to 7071 states and 11096 transitions. [2022-01-10 13:18:34,937 INFO L78 Accepts]: Start accepts. Automaton has 7071 states and 11096 transitions. Word has length 318 [2022-01-10 13:18:34,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:34,937 INFO L470 AbstractCegarLoop]: Abstraction has 7071 states and 11096 transitions. [2022-01-10 13:18:34,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 13:18:34,938 INFO L276 IsEmpty]: Start isEmpty. Operand 7071 states and 11096 transitions. [2022-01-10 13:18:34,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-01-10 13:18:34,947 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:34,948 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:18:34,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:18:34,948 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:18:34,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:34,948 INFO L85 PathProgramCache]: Analyzing trace with hash 213373997, now seen corresponding path program 1 times [2022-01-10 13:18:34,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:34,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38359449] [2022-01-10 13:18:34,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:34,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:35,131 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 13:18:35,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:35,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38359449] [2022-01-10 13:18:35,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38359449] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:35,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:35,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:18:35,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111101760] [2022-01-10 13:18:35,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:35,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:18:35,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:35,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:18:35,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:18:35,133 INFO L87 Difference]: Start difference. First operand 7071 states and 11096 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 13:18:35,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:35,627 INFO L93 Difference]: Finished difference Result 13048 states and 20326 transitions. [2022-01-10 13:18:35,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:18:35,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 318 [2022-01-10 13:18:35,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:35,643 INFO L225 Difference]: With dead ends: 13048 [2022-01-10 13:18:35,643 INFO L226 Difference]: Without dead ends: 9185 [2022-01-10 13:18:35,648 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 13:18:35,648 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 684 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 2677 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:35,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [684 Valid, 2677 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:35,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9185 states. [2022-01-10 13:18:36,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9185 to 7944. [2022-01-10 13:18:36,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7944 states, 7943 states have (on average 1.5773637164799195) internal successors, (12529), 7943 states have internal predecessors, (12529), 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 13:18:36,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7944 states to 7944 states and 12529 transitions. [2022-01-10 13:18:36,139 INFO L78 Accepts]: Start accepts. Automaton has 7944 states and 12529 transitions. Word has length 318 [2022-01-10 13:18:36,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:36,139 INFO L470 AbstractCegarLoop]: Abstraction has 7944 states and 12529 transitions. [2022-01-10 13:18:36,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 13:18:36,140 INFO L276 IsEmpty]: Start isEmpty. Operand 7944 states and 12529 transitions. [2022-01-10 13:18:36,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-01-10 13:18:36,151 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:36,151 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:18:36,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:18:36,152 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:18:36,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:36,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1283209557, now seen corresponding path program 1 times [2022-01-10 13:18:36,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:36,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204666824] [2022-01-10 13:18:36,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:36,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:36,269 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 13:18:36,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:36,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204666824] [2022-01-10 13:18:36,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204666824] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:36,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:36,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:18:36,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694652481] [2022-01-10 13:18:36,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:36,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:18:36,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:36,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:18:36,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:18:36,271 INFO L87 Difference]: Start difference. First operand 7944 states and 12529 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 13:18:37,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:37,018 INFO L93 Difference]: Finished difference Result 20160 states and 31260 transitions. [2022-01-10 13:18:37,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:18:37,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 318 [2022-01-10 13:18:37,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:37,044 INFO L225 Difference]: With dead ends: 20160 [2022-01-10 13:18:37,044 INFO L226 Difference]: Without dead ends: 14077 [2022-01-10 13:18:37,053 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 13:18:37,054 INFO L933 BasicCegarLoop]: 2277 mSDtfsCounter, 1062 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 3480 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:37,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1062 Valid, 3480 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:37,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14077 states. [2022-01-10 13:18:37,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14077 to 8034. [2022-01-10 13:18:37,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8034 states, 8033 states have (on average 1.5717664633387278) internal successors, (12626), 8033 states have internal predecessors, (12626), 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 13:18:37,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8034 states to 8034 states and 12626 transitions. [2022-01-10 13:18:37,545 INFO L78 Accepts]: Start accepts. Automaton has 8034 states and 12626 transitions. Word has length 318 [2022-01-10 13:18:37,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:37,546 INFO L470 AbstractCegarLoop]: Abstraction has 8034 states and 12626 transitions. [2022-01-10 13:18:37,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 13:18:37,546 INFO L276 IsEmpty]: Start isEmpty. Operand 8034 states and 12626 transitions. [2022-01-10 13:18:37,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-01-10 13:18:37,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:37,556 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:18:37,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 13:18:37,557 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:18:37,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:37,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1413305340, now seen corresponding path program 1 times [2022-01-10 13:18:37,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:37,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187097427] [2022-01-10 13:18:37,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:37,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:37,684 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 13:18:37,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:37,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187097427] [2022-01-10 13:18:37,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187097427] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:37,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:37,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:18:37,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85792893] [2022-01-10 13:18:37,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:37,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:18:37,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:37,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:18:37,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:18:37,686 INFO L87 Difference]: Start difference. First operand 8034 states and 12626 transitions. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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 13:18:39,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:39,082 INFO L93 Difference]: Finished difference Result 26445 states and 41083 transitions. [2022-01-10 13:18:39,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:18:39,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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 320 [2022-01-10 13:18:39,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:39,112 INFO L225 Difference]: With dead ends: 26445 [2022-01-10 13:18:39,112 INFO L226 Difference]: Without dead ends: 20228 [2022-01-10 13:18:39,119 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 13:18:39,119 INFO L933 BasicCegarLoop]: 2596 mSDtfsCounter, 2870 mSDsluCounter, 3473 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2870 SdHoareTripleChecker+Valid, 6069 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:39,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2870 Valid, 6069 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:39,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20228 states. [2022-01-10 13:18:39,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20228 to 9180. [2022-01-10 13:18:39,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9180 states, 9179 states have (on average 1.59026037694738) internal successors, (14597), 9179 states have internal predecessors, (14597), 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 13:18:39,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9180 states to 9180 states and 14597 transitions. [2022-01-10 13:18:39,757 INFO L78 Accepts]: Start accepts. Automaton has 9180 states and 14597 transitions. Word has length 320 [2022-01-10 13:18:39,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:39,757 INFO L470 AbstractCegarLoop]: Abstraction has 9180 states and 14597 transitions. [2022-01-10 13:18:39,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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 13:18:39,757 INFO L276 IsEmpty]: Start isEmpty. Operand 9180 states and 14597 transitions. [2022-01-10 13:18:39,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-01-10 13:18:39,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:39,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:18:39,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 13:18:39,768 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:18:39,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:39,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1050656446, now seen corresponding path program 1 times [2022-01-10 13:18:39,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:39,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663951474] [2022-01-10 13:18:39,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:39,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:39,936 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 13:18:39,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:39,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663951474] [2022-01-10 13:18:39,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663951474] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:39,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:39,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:18:39,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331193017] [2022-01-10 13:18:39,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:39,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:18:39,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:39,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:18:39,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:18:39,938 INFO L87 Difference]: Start difference. First operand 9180 states and 14597 transitions. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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 13:18:41,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:41,271 INFO L93 Difference]: Finished difference Result 25627 states and 40513 transitions. [2022-01-10 13:18:41,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:18:41,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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 320 [2022-01-10 13:18:41,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:41,298 INFO L225 Difference]: With dead ends: 25627 [2022-01-10 13:18:41,298 INFO L226 Difference]: Without dead ends: 17403 [2022-01-10 13:18:41,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 13:18:41,311 INFO L933 BasicCegarLoop]: 1814 mSDtfsCounter, 2759 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2759 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:41,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2759 Valid, 2957 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:18:41,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17403 states. [2022-01-10 13:18:42,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17403 to 17401. [2022-01-10 13:18:42,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17401 states, 17400 states have (on average 1.573793103448276) internal successors, (27384), 17400 states have internal predecessors, (27384), 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 13:18:42,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17401 states to 17401 states and 27384 transitions. [2022-01-10 13:18:42,695 INFO L78 Accepts]: Start accepts. Automaton has 17401 states and 27384 transitions. Word has length 320 [2022-01-10 13:18:42,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:42,696 INFO L470 AbstractCegarLoop]: Abstraction has 17401 states and 27384 transitions. [2022-01-10 13:18:42,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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 13:18:42,696 INFO L276 IsEmpty]: Start isEmpty. Operand 17401 states and 27384 transitions. [2022-01-10 13:18:42,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-01-10 13:18:42,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:42,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:18:42,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 13:18:42,719 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:18:42,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:42,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1339359205, now seen corresponding path program 1 times [2022-01-10 13:18:42,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:42,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625290165] [2022-01-10 13:18:42,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:42,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:42,933 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 13:18:42,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:42,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625290165] [2022-01-10 13:18:42,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625290165] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:42,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:42,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:18:42,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810386813] [2022-01-10 13:18:42,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:42,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:18:42,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:42,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:18:42,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:18:42,936 INFO L87 Difference]: Start difference. First operand 17401 states and 27384 transitions. Second operand has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 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 13:18:46,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:46,601 INFO L93 Difference]: Finished difference Result 64150 states and 100106 transitions. [2022-01-10 13:18:46,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:18:46,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 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 322 [2022-01-10 13:18:46,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:46,675 INFO L225 Difference]: With dead ends: 64150 [2022-01-10 13:18:46,675 INFO L226 Difference]: Without dead ends: 47267 [2022-01-10 13:18:46,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 13:18:46,701 INFO L933 BasicCegarLoop]: 2183 mSDtfsCounter, 3572 mSDsluCounter, 3309 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3572 SdHoareTripleChecker+Valid, 5492 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:46,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3572 Valid, 5492 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:18:46,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47267 states. [2022-01-10 13:18:49,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47267 to 33311. [2022-01-10 13:18:49,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33311 states, 33310 states have (on average 1.555959171419994) internal successors, (51829), 33310 states have internal predecessors, (51829), 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 13:18:49,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33311 states to 33311 states and 51829 transitions. [2022-01-10 13:18:49,838 INFO L78 Accepts]: Start accepts. Automaton has 33311 states and 51829 transitions. Word has length 322 [2022-01-10 13:18:49,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:49,838 INFO L470 AbstractCegarLoop]: Abstraction has 33311 states and 51829 transitions. [2022-01-10 13:18:49,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 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 13:18:49,839 INFO L276 IsEmpty]: Start isEmpty. Operand 33311 states and 51829 transitions. [2022-01-10 13:18:49,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-01-10 13:18:49,869 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:49,869 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:18:49,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 13:18:49,869 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:18:49,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:49,870 INFO L85 PathProgramCache]: Analyzing trace with hash 144441104, now seen corresponding path program 1 times [2022-01-10 13:18:49,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:49,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251263951] [2022-01-10 13:18:49,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:49,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:49,997 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 13:18:49,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:49,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251263951] [2022-01-10 13:18:49,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251263951] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:49,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:49,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:18:49,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536938354] [2022-01-10 13:18:49,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:49,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:18:49,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:49,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:18:49,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:18:49,998 INFO L87 Difference]: Start difference. First operand 33311 states and 51829 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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 13:18:56,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:56,254 INFO L93 Difference]: Finished difference Result 96754 states and 150089 transitions. [2022-01-10 13:18:56,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:18:56,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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 324 [2022-01-10 13:18:56,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:56,370 INFO L225 Difference]: With dead ends: 96754 [2022-01-10 13:18:56,370 INFO L226 Difference]: Without dead ends: 64968 [2022-01-10 13:18:56,403 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 13:18:56,407 INFO L933 BasicCegarLoop]: 2379 mSDtfsCounter, 1164 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 3583 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:56,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1164 Valid, 3583 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:56,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64968 states. [2022-01-10 13:18:59,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64968 to 33840. [2022-01-10 13:18:59,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33840 states, 33839 states have (on average 1.5501935636395874) internal successors, (52457), 33839 states have internal predecessors, (52457), 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 13:19:00,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33840 states to 33840 states and 52457 transitions. [2022-01-10 13:19:00,005 INFO L78 Accepts]: Start accepts. Automaton has 33840 states and 52457 transitions. Word has length 324 [2022-01-10 13:19:00,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:19:00,005 INFO L470 AbstractCegarLoop]: Abstraction has 33840 states and 52457 transitions. [2022-01-10 13:19:00,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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 13:19:00,005 INFO L276 IsEmpty]: Start isEmpty. Operand 33840 states and 52457 transitions. [2022-01-10 13:19:00,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-01-10 13:19:00,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:19:00,038 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:19:00,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 13:19:00,038 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:19:00,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:19:00,038 INFO L85 PathProgramCache]: Analyzing trace with hash -2029731199, now seen corresponding path program 1 times [2022-01-10 13:19:00,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:19:00,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916978619] [2022-01-10 13:19:00,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:19:00,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:19:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:19:00,207 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 13:19:00,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:19:00,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916978619] [2022-01-10 13:19:00,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916978619] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:19:00,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:19:00,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:19:00,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063590076] [2022-01-10 13:19:00,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:19:00,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:19:00,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:19:00,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:19:00,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:19:00,209 INFO L87 Difference]: Start difference. First operand 33840 states and 52457 transitions. Second operand has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 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 13:19:06,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:19:06,586 INFO L93 Difference]: Finished difference Result 95873 states and 148275 transitions. [2022-01-10 13:19:06,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:19:06,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 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 326 [2022-01-10 13:19:06,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:19:06,709 INFO L225 Difference]: With dead ends: 95873 [2022-01-10 13:19:06,709 INFO L226 Difference]: Without dead ends: 63649 [2022-01-10 13:19:06,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:19:06,748 INFO L933 BasicCegarLoop]: 1810 mSDtfsCounter, 3362 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3362 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:19:06,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3362 Valid, 2953 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:19:06,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63649 states. [2022-01-10 13:19:12,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63649 to 63593. [2022-01-10 13:19:13,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63593 states, 63592 states have (on average 1.5341709649012454) internal successors, (97561), 63592 states have internal predecessors, (97561), 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 13:19:13,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63593 states to 63593 states and 97561 transitions. [2022-01-10 13:19:13,121 INFO L78 Accepts]: Start accepts. Automaton has 63593 states and 97561 transitions. Word has length 326 [2022-01-10 13:19:13,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:19:13,121 INFO L470 AbstractCegarLoop]: Abstraction has 63593 states and 97561 transitions. [2022-01-10 13:19:13,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 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 13:19:13,121 INFO L276 IsEmpty]: Start isEmpty. Operand 63593 states and 97561 transitions. [2022-01-10 13:19:13,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-01-10 13:19:13,175 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:19:13,175 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:19:13,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 13:19:13,175 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:19:13,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:19:13,176 INFO L85 PathProgramCache]: Analyzing trace with hash 178634183, now seen corresponding path program 1 times [2022-01-10 13:19:13,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:19:13,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764647094] [2022-01-10 13:19:13,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:19:13,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:19:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:19:13,283 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 13:19:13,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:19:13,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764647094] [2022-01-10 13:19:13,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764647094] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:19:13,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:19:13,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:19:13,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760073710] [2022-01-10 13:19:13,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:19:13,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:19:13,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:19:13,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:19:13,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:19:13,284 INFO L87 Difference]: Start difference. First operand 63593 states and 97561 transitions. Second operand has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 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)