/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:45:20,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:45:20,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:45:20,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:45:20,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:45:20,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:45:20,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:45:20,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:45:20,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:45:20,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:45:20,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:45:20,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:45:20,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:45:20,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:45:20,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:45:20,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:45:20,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:45:20,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:45:20,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:45:20,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:45:20,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:45:20,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:45:20,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:45:20,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:45:20,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:45:20,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:45:20,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:45:20,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:45:20,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:45:20,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:45:20,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:45:20,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:45:20,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:45:20,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:45:20,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:45:20,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:45:20,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:45:20,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:45:20,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:45:20,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:45:20,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:45:20,152 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:45:20,173 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:45:20,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:45:20,174 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:45:20,174 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:45:20,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:45:20,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:45:20,175 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:45:20,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:45:20,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:45:20,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:45:20,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:45:20,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:45:20,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:45:20,176 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:45:20,176 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:45:20,177 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:45:20,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:45:20,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:45:20,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:45:20,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:45:20,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:45:20,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:45:20,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:45:20,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:45:20,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:45:20,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:45:20,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:45:20,178 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:45:20,178 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:45:20,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:45:20,178 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:45:20,178 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:45:20,179 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:45:20,179 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:45:20,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:45:20,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:45:20,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:45:20,363 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:45:20,365 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:45:20,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-01-11 06:45:20,414 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ade02450/ec03f2f335964c9dad87c1e911099d99/FLAG0af850c66 [2022-01-11 06:45:20,821 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:45:20,821 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-01-11 06:45:20,832 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ade02450/ec03f2f335964c9dad87c1e911099d99/FLAG0af850c66 [2022-01-11 06:45:21,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ade02450/ec03f2f335964c9dad87c1e911099d99 [2022-01-11 06:45:21,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:45:21,215 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:45:21,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:45:21,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:45:21,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:45:21,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:45:21" (1/1) ... [2022-01-11 06:45:21,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e807932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:21, skipping insertion in model container [2022-01-11 06:45:21,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:45:21" (1/1) ... [2022-01-11 06:45:21,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:45:21,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:45:21,574 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.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[15542,15555] [2022-01-11 06:45:21,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:45:21,631 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:45:21,693 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.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[15542,15555] [2022-01-11 06:45:21,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:45:21,750 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:45:21,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:21 WrapperNode [2022-01-11 06:45:21,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:45:21,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:45:21,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:45:21,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:45:21,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:21" (1/1) ... [2022-01-11 06:45:21,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:21" (1/1) ... [2022-01-11 06:45:21,803 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1246 [2022-01-11 06:45:21,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:45:21,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:45:21,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:45:21,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:45:21,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:21" (1/1) ... [2022-01-11 06:45:21,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:21" (1/1) ... [2022-01-11 06:45:21,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:21" (1/1) ... [2022-01-11 06:45:21,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:21" (1/1) ... [2022-01-11 06:45:21,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:21" (1/1) ... [2022-01-11 06:45:21,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:21" (1/1) ... [2022-01-11 06:45:21,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:21" (1/1) ... [2022-01-11 06:45:21,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:45:21,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:45:21,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:45:21,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:45:21,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:21" (1/1) ... [2022-01-11 06:45:21,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:45:21,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:45:21,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 06:45:21,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 06:45:21,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:45:21,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:45:21,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:45:21,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:45:22,032 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:45:22,033 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:45:22,835 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:45:22,847 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:45:22,848 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:45:22,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:45:22 BoogieIcfgContainer [2022-01-11 06:45:22,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:45:22,852 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:45:22,852 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:45:22,853 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:45:22,855 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:45:22" (1/1) ... [2022-01-11 06:45:23,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:45:23 BasicIcfg [2022-01-11 06:45:23,477 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:45:23,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:45:23,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:45:23,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:45:23,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:45:21" (1/4) ... [2022-01-11 06:45:23,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed6d133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:45:23, skipping insertion in model container [2022-01-11 06:45:23,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:21" (2/4) ... [2022-01-11 06:45:23,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed6d133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:45:23, skipping insertion in model container [2022-01-11 06:45:23,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:45:22" (3/4) ... [2022-01-11 06:45:23,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed6d133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:45:23, skipping insertion in model container [2022-01-11 06:45:23,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:45:23" (4/4) ... [2022-01-11 06:45:23,484 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-11 06:45:23,489 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:45:23,489 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:45:23,528 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:45:23,535 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 06:45:23,536 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:45:23,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 322 states have (on average 1.779503105590062) internal successors, (573), 323 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:23,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-11 06:45:23,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:23,571 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] [2022-01-11 06:45:23,572 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:23,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:23,578 INFO L85 PathProgramCache]: Analyzing trace with hash 822363122, now seen corresponding path program 1 times [2022-01-11 06:45:23,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:23,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355570543] [2022-01-11 06:45:23,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:23,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:24,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:45:24,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:24,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355570543] [2022-01-11 06:45:24,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355570543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:24,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:24,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:45:24,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723119370] [2022-01-11 06:45:24,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:24,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:45:24,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:24,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:45:24,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:45:24,120 INFO L87 Difference]: Start difference. First operand has 324 states, 322 states have (on average 1.779503105590062) internal successors, (573), 323 states have internal predecessors, (573), 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 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:24,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:24,263 INFO L93 Difference]: Finished difference Result 928 states and 1644 transitions. [2022-01-11 06:45:24,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:45:24,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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 150 [2022-01-11 06:45:24,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:24,283 INFO L225 Difference]: With dead ends: 928 [2022-01-11 06:45:24,283 INFO L226 Difference]: Without dead ends: 623 [2022-01-11 06:45:24,288 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 [2022-01-11 06:45:24,292 INFO L933 BasicCegarLoop]: 882 mSDtfsCounter, 1285 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:24,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1285 Valid, 1412 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:24,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2022-01-11 06:45:24,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 621. [2022-01-11 06:45:24,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 620 states have (on average 1.4596774193548387) internal successors, (905), 620 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:24,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 905 transitions. [2022-01-11 06:45:24,370 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 905 transitions. Word has length 150 [2022-01-11 06:45:24,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:24,371 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 905 transitions. [2022-01-11 06:45:24,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:24,371 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 905 transitions. [2022-01-11 06:45:24,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-01-11 06:45:24,374 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:24,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:45:24,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:45:24,374 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:24,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:24,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1854319624, now seen corresponding path program 1 times [2022-01-11 06:45:24,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:24,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757860412] [2022-01-11 06:45:24,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:24,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:24,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:45:24,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:24,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757860412] [2022-01-11 06:45:24,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757860412] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:24,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:24,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:45:24,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409016870] [2022-01-11 06:45:24,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:24,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:45:24,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:24,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:45:24,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:24,510 INFO L87 Difference]: Start difference. First operand 621 states and 905 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:24,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:24,546 INFO L93 Difference]: Finished difference Result 1825 states and 2651 transitions. [2022-01-11 06:45:24,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:45:24,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 151 [2022-01-11 06:45:24,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:24,551 INFO L225 Difference]: With dead ends: 1825 [2022-01-11 06:45:24,551 INFO L226 Difference]: Without dead ends: 1232 [2022-01-11 06:45:24,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:24,556 INFO L933 BasicCegarLoop]: 930 mSDtfsCounter, 461 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:24,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 1393 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:24,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2022-01-11 06:45:24,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 623. [2022-01-11 06:45:24,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 622 states have (on average 1.4581993569131833) internal successors, (907), 622 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:24,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 907 transitions. [2022-01-11 06:45:24,584 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 907 transitions. Word has length 151 [2022-01-11 06:45:24,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:24,585 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 907 transitions. [2022-01-11 06:45:24,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:24,586 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 907 transitions. [2022-01-11 06:45:24,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-11 06:45:24,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:24,592 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] [2022-01-11 06:45:24,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:45:24,594 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:24,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:24,598 INFO L85 PathProgramCache]: Analyzing trace with hash 285027533, now seen corresponding path program 1 times [2022-01-11 06:45:24,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:24,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424737051] [2022-01-11 06:45:24,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:24,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:24,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:45:24,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:24,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424737051] [2022-01-11 06:45:24,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424737051] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:24,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:24,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:45:24,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100887471] [2022-01-11 06:45:24,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:24,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:45:24,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:24,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:45:24,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:45:24,824 INFO L87 Difference]: Start difference. First operand 623 states and 907 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:24,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:24,964 INFO L93 Difference]: Finished difference Result 2410 states and 3494 transitions. [2022-01-11 06:45:24,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:45:24,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 152 [2022-01-11 06:45:24,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:24,970 INFO L225 Difference]: With dead ends: 2410 [2022-01-11 06:45:24,970 INFO L226 Difference]: Without dead ends: 1799 [2022-01-11 06:45:24,973 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 [2022-01-11 06:45:24,977 INFO L933 BasicCegarLoop]: 1019 mSDtfsCounter, 1314 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 2312 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:24,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1314 Valid, 2312 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:24,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2022-01-11 06:45:25,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1204. [2022-01-11 06:45:25,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1204 states, 1203 states have (on average 1.4413965087281795) internal successors, (1734), 1203 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:25,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1734 transitions. [2022-01-11 06:45:25,065 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1734 transitions. Word has length 152 [2022-01-11 06:45:25,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:25,065 INFO L470 AbstractCegarLoop]: Abstraction has 1204 states and 1734 transitions. [2022-01-11 06:45:25,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:25,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1734 transitions. [2022-01-11 06:45:25,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-11 06:45:25,067 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:25,068 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] [2022-01-11 06:45:25,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:45:25,068 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:25,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:25,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1032291889, now seen corresponding path program 1 times [2022-01-11 06:45:25,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:25,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128893535] [2022-01-11 06:45:25,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:25,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:25,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:45:25,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:25,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128893535] [2022-01-11 06:45:25,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128893535] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:25,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:25,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:45:25,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47356541] [2022-01-11 06:45:25,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:25,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:45:25,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:25,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:45:25,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:45:25,189 INFO L87 Difference]: Start difference. First operand 1204 states and 1734 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:25,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:25,267 INFO L93 Difference]: Finished difference Result 2105 states and 3026 transitions. [2022-01-11 06:45:25,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:45:25,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 152 [2022-01-11 06:45:25,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:25,273 INFO L225 Difference]: With dead ends: 2105 [2022-01-11 06:45:25,273 INFO L226 Difference]: Without dead ends: 917 [2022-01-11 06:45:25,275 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 [2022-01-11 06:45:25,280 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 69 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:25,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1451 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:25,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2022-01-11 06:45:25,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 917. [2022-01-11 06:45:25,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 916 states have (on average 1.4366812227074235) internal successors, (1316), 916 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:25,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1316 transitions. [2022-01-11 06:45:25,339 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1316 transitions. Word has length 152 [2022-01-11 06:45:25,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:25,339 INFO L470 AbstractCegarLoop]: Abstraction has 917 states and 1316 transitions. [2022-01-11 06:45:25,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:25,340 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1316 transitions. [2022-01-11 06:45:25,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-11 06:45:25,341 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:25,342 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] [2022-01-11 06:45:25,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:45:25,342 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:25,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:25,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1913391700, now seen corresponding path program 1 times [2022-01-11 06:45:25,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:25,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050287472] [2022-01-11 06:45:25,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:25,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:25,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:45:25,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:25,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050287472] [2022-01-11 06:45:25,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050287472] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:25,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:25,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:45:25,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388394674] [2022-01-11 06:45:25,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:25,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:45:25,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:25,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:45:25,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:25,431 INFO L87 Difference]: Start difference. First operand 917 states and 1316 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:25,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:25,508 INFO L93 Difference]: Finished difference Result 1814 states and 2595 transitions. [2022-01-11 06:45:25,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:45:25,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2022-01-11 06:45:25,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:25,513 INFO L225 Difference]: With dead ends: 1814 [2022-01-11 06:45:25,513 INFO L226 Difference]: Without dead ends: 1213 [2022-01-11 06:45:25,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:25,515 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 455 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:25,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 956 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:25,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2022-01-11 06:45:25,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 917. [2022-01-11 06:45:25,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 916 states have (on average 1.435589519650655) internal successors, (1315), 916 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:25,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1315 transitions. [2022-01-11 06:45:25,560 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1315 transitions. Word has length 154 [2022-01-11 06:45:25,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:25,561 INFO L470 AbstractCegarLoop]: Abstraction has 917 states and 1315 transitions. [2022-01-11 06:45:25,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:25,562 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1315 transitions. [2022-01-11 06:45:25,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-11 06:45:25,563 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:25,564 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] [2022-01-11 06:45:25,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:45:25,564 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:25,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:25,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1951781730, now seen corresponding path program 1 times [2022-01-11 06:45:25,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:25,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129450537] [2022-01-11 06:45:25,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:25,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:45:25,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:25,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129450537] [2022-01-11 06:45:25,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129450537] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:25,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:25,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:45:25,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874697835] [2022-01-11 06:45:25,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:25,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:45:25,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:25,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:45:25,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:25,660 INFO L87 Difference]: Start difference. First operand 917 states and 1315 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:25,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:25,727 INFO L93 Difference]: Finished difference Result 1880 states and 2783 transitions. [2022-01-11 06:45:25,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:45:25,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 155 [2022-01-11 06:45:25,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:25,731 INFO L225 Difference]: With dead ends: 1880 [2022-01-11 06:45:25,731 INFO L226 Difference]: Without dead ends: 1146 [2022-01-11 06:45:25,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:25,733 INFO L933 BasicCegarLoop]: 594 mSDtfsCounter, 225 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:25,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 947 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:25,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2022-01-11 06:45:25,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1129. [2022-01-11 06:45:25,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 1128 states have (on average 1.4716312056737588) internal successors, (1660), 1128 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:25,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1660 transitions. [2022-01-11 06:45:25,786 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1660 transitions. Word has length 155 [2022-01-11 06:45:25,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:25,786 INFO L470 AbstractCegarLoop]: Abstraction has 1129 states and 1660 transitions. [2022-01-11 06:45:25,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:25,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1660 transitions. [2022-01-11 06:45:25,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 06:45:25,788 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:25,788 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] [2022-01-11 06:45:25,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:45:25,788 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:25,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:25,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1295226617, now seen corresponding path program 1 times [2022-01-11 06:45:25,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:25,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078120599] [2022-01-11 06:45:25,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:25,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:25,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:45:25,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:25,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078120599] [2022-01-11 06:45:25,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078120599] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:25,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:25,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:45:25,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014797661] [2022-01-11 06:45:25,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:25,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:45:25,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:25,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:45:25,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:25,905 INFO L87 Difference]: Start difference. First operand 1129 states and 1660 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:26,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:26,008 INFO L93 Difference]: Finished difference Result 2947 states and 4378 transitions. [2022-01-11 06:45:26,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:45:26,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 158 [2022-01-11 06:45:26,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:26,014 INFO L225 Difference]: With dead ends: 2947 [2022-01-11 06:45:26,015 INFO L226 Difference]: Without dead ends: 2099 [2022-01-11 06:45:26,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:26,017 INFO L933 BasicCegarLoop]: 862 mSDtfsCounter, 389 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:26,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 1283 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:26,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2099 states. [2022-01-11 06:45:26,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2099 to 2097. [2022-01-11 06:45:26,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2097 states, 2096 states have (on average 1.4608778625954197) internal successors, (3062), 2096 states have internal predecessors, (3062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:26,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 3062 transitions. [2022-01-11 06:45:26,122 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 3062 transitions. Word has length 158 [2022-01-11 06:45:26,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:26,122 INFO L470 AbstractCegarLoop]: Abstraction has 2097 states and 3062 transitions. [2022-01-11 06:45:26,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:26,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 3062 transitions. [2022-01-11 06:45:26,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 06:45:26,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:26,124 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] [2022-01-11 06:45:26,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:45:26,125 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:26,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:26,125 INFO L85 PathProgramCache]: Analyzing trace with hash -348059674, now seen corresponding path program 1 times [2022-01-11 06:45:26,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:26,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224484579] [2022-01-11 06:45:26,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:26,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:26,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:45:26,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:26,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224484579] [2022-01-11 06:45:26,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224484579] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:26,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:26,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:45:26,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455075549] [2022-01-11 06:45:26,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:26,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:45:26,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:26,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:45:26,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:45:26,241 INFO L87 Difference]: Start difference. First operand 2097 states and 3062 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:26,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:26,424 INFO L93 Difference]: Finished difference Result 5220 states and 7620 transitions. [2022-01-11 06:45:26,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:45:26,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 158 [2022-01-11 06:45:26,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:26,434 INFO L225 Difference]: With dead ends: 5220 [2022-01-11 06:45:26,434 INFO L226 Difference]: Without dead ends: 3211 [2022-01-11 06:45:26,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:45:26,439 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 1251 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:26,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1251 Valid, 997 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:26,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2022-01-11 06:45:26,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 2102. [2022-01-11 06:45:26,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2102 states, 2101 states have (on average 1.458353165159448) internal successors, (3064), 2101 states have internal predecessors, (3064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:26,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 3064 transitions. [2022-01-11 06:45:26,576 INFO L78 Accepts]: Start accepts. Automaton has 2102 states and 3064 transitions. Word has length 158 [2022-01-11 06:45:26,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:26,577 INFO L470 AbstractCegarLoop]: Abstraction has 2102 states and 3064 transitions. [2022-01-11 06:45:26,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:26,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2102 states and 3064 transitions. [2022-01-11 06:45:26,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 06:45:26,579 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:26,579 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] [2022-01-11 06:45:26,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:45:26,579 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:26,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:26,580 INFO L85 PathProgramCache]: Analyzing trace with hash 424088474, now seen corresponding path program 1 times [2022-01-11 06:45:26,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:26,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545206035] [2022-01-11 06:45:26,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:26,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:26,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:45:26,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:26,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545206035] [2022-01-11 06:45:26,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545206035] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:26,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:26,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:45:26,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206353992] [2022-01-11 06:45:26,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:26,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:45:26,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:26,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:45:26,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:45:26,733 INFO L87 Difference]: Start difference. First operand 2102 states and 3064 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:27,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:27,008 INFO L93 Difference]: Finished difference Result 6019 states and 8759 transitions. [2022-01-11 06:45:27,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:45:27,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 158 [2022-01-11 06:45:27,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:27,020 INFO L225 Difference]: With dead ends: 6019 [2022-01-11 06:45:27,020 INFO L226 Difference]: Without dead ends: 3985 [2022-01-11 06:45:27,022 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 [2022-01-11 06:45:27,023 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 980 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:27,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [980 Valid, 1135 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:27,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3985 states. [2022-01-11 06:45:27,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3985 to 3983. [2022-01-11 06:45:27,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3983 states, 3982 states have (on average 1.4447513812154695) internal successors, (5753), 3982 states have internal predecessors, (5753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:27,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3983 states to 3983 states and 5753 transitions. [2022-01-11 06:45:27,265 INFO L78 Accepts]: Start accepts. Automaton has 3983 states and 5753 transitions. Word has length 158 [2022-01-11 06:45:27,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:27,265 INFO L470 AbstractCegarLoop]: Abstraction has 3983 states and 5753 transitions. [2022-01-11 06:45:27,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:27,266 INFO L276 IsEmpty]: Start isEmpty. Operand 3983 states and 5753 transitions. [2022-01-11 06:45:27,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 06:45:27,270 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:27,270 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] [2022-01-11 06:45:27,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:45:27,270 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:27,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:27,271 INFO L85 PathProgramCache]: Analyzing trace with hash -871743579, now seen corresponding path program 1 times [2022-01-11 06:45:27,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:27,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895458895] [2022-01-11 06:45:27,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:27,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:27,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:45:27,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:27,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895458895] [2022-01-11 06:45:27,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895458895] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:27,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:27,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:45:27,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098823335] [2022-01-11 06:45:27,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:27,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:45:27,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:27,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:45:27,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:45:27,374 INFO L87 Difference]: Start difference. First operand 3983 states and 5753 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:27,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:27,552 INFO L93 Difference]: Finished difference Result 5792 states and 8409 transitions. [2022-01-11 06:45:27,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:45:27,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 160 [2022-01-11 06:45:27,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:27,562 INFO L225 Difference]: With dead ends: 5792 [2022-01-11 06:45:27,562 INFO L226 Difference]: Without dead ends: 3326 [2022-01-11 06:45:27,566 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 [2022-01-11 06:45:27,567 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 47 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:27,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 1426 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:27,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3326 states. [2022-01-11 06:45:27,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3326 to 3326. [2022-01-11 06:45:27,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3326 states, 3325 states have (on average 1.4454135338345864) internal successors, (4806), 3325 states have internal predecessors, (4806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:27,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3326 states to 3326 states and 4806 transitions. [2022-01-11 06:45:27,820 INFO L78 Accepts]: Start accepts. Automaton has 3326 states and 4806 transitions. Word has length 160 [2022-01-11 06:45:27,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:27,820 INFO L470 AbstractCegarLoop]: Abstraction has 3326 states and 4806 transitions. [2022-01-11 06:45:27,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:27,821 INFO L276 IsEmpty]: Start isEmpty. Operand 3326 states and 4806 transitions. [2022-01-11 06:45:27,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 06:45:27,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:27,824 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] [2022-01-11 06:45:27,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:45:27,824 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:27,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:27,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1743184203, now seen corresponding path program 1 times [2022-01-11 06:45:27,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:27,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323838523] [2022-01-11 06:45:27,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:27,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:27,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:45:27,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:27,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323838523] [2022-01-11 06:45:27,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323838523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:27,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:27,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:45:27,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382205981] [2022-01-11 06:45:27,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:27,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:45:27,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:27,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:45:27,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:45:27,957 INFO L87 Difference]: Start difference. First operand 3326 states and 4806 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:28,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:28,374 INFO L93 Difference]: Finished difference Result 8752 states and 12611 transitions. [2022-01-11 06:45:28,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:45:28,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 160 [2022-01-11 06:45:28,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:28,390 INFO L225 Difference]: With dead ends: 8752 [2022-01-11 06:45:28,390 INFO L226 Difference]: Without dead ends: 5470 [2022-01-11 06:45:28,394 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 [2022-01-11 06:45:28,395 INFO L933 BasicCegarLoop]: 1006 mSDtfsCounter, 1404 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:28,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1404 Valid, 1850 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:28,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5470 states. [2022-01-11 06:45:28,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5470 to 3491. [2022-01-11 06:45:28,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3491 states, 3490 states have (on average 1.4315186246418339) internal successors, (4996), 3490 states have internal predecessors, (4996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:28,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 4996 transitions. [2022-01-11 06:45:28,627 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 4996 transitions. Word has length 160 [2022-01-11 06:45:28,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:28,627 INFO L470 AbstractCegarLoop]: Abstraction has 3491 states and 4996 transitions. [2022-01-11 06:45:28,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:28,627 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 4996 transitions. [2022-01-11 06:45:28,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 06:45:28,631 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:28,631 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] [2022-01-11 06:45:28,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:45:28,631 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:28,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:28,632 INFO L85 PathProgramCache]: Analyzing trace with hash -881676519, now seen corresponding path program 1 times [2022-01-11 06:45:28,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:28,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411573331] [2022-01-11 06:45:28,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:28,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:28,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:45:28,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:28,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411573331] [2022-01-11 06:45:28,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411573331] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:28,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:28,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:45:28,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702179577] [2022-01-11 06:45:28,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:28,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:45:28,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:28,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:45:28,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:45:28,726 INFO L87 Difference]: Start difference. First operand 3491 states and 4996 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:28,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:28,883 INFO L93 Difference]: Finished difference Result 6298 states and 9005 transitions. [2022-01-11 06:45:28,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:45:28,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 160 [2022-01-11 06:45:28,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:28,896 INFO L225 Difference]: With dead ends: 6298 [2022-01-11 06:45:28,896 INFO L226 Difference]: Without dead ends: 2843 [2022-01-11 06:45:28,900 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 [2022-01-11 06:45:28,901 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 47 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:28,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 1421 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:28,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2022-01-11 06:45:29,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 2843. [2022-01-11 06:45:29,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2843 states, 2842 states have (on average 1.4278676988036594) internal successors, (4058), 2842 states have internal predecessors, (4058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:29,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2843 states to 2843 states and 4058 transitions. [2022-01-11 06:45:29,069 INFO L78 Accepts]: Start accepts. Automaton has 2843 states and 4058 transitions. Word has length 160 [2022-01-11 06:45:29,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:29,069 INFO L470 AbstractCegarLoop]: Abstraction has 2843 states and 4058 transitions. [2022-01-11 06:45:29,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:29,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2843 states and 4058 transitions. [2022-01-11 06:45:29,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-11 06:45:29,075 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:29,075 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] [2022-01-11 06:45:29,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 06:45:29,075 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:29,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:29,075 INFO L85 PathProgramCache]: Analyzing trace with hash 301684773, now seen corresponding path program 1 times [2022-01-11 06:45:29,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:29,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205379802] [2022-01-11 06:45:29,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:29,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:29,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:45:29,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:29,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205379802] [2022-01-11 06:45:29,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205379802] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:29,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:29,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:45:29,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822365865] [2022-01-11 06:45:29,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:29,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:45:29,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:29,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:45:29,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:29,146 INFO L87 Difference]: Start difference. First operand 2843 states and 4058 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:29,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:29,332 INFO L93 Difference]: Finished difference Result 5594 states and 8009 transitions. [2022-01-11 06:45:29,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:45:29,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 163 [2022-01-11 06:45:29,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:29,347 INFO L225 Difference]: With dead ends: 5594 [2022-01-11 06:45:29,347 INFO L226 Difference]: Without dead ends: 3925 [2022-01-11 06:45:29,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:29,350 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 438 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:29,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 1140 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:29,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3925 states. [2022-01-11 06:45:29,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3925 to 2843. [2022-01-11 06:45:29,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2843 states, 2842 states have (on average 1.4268121041520057) internal successors, (4055), 2842 states have internal predecessors, (4055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:29,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2843 states to 2843 states and 4055 transitions. [2022-01-11 06:45:29,512 INFO L78 Accepts]: Start accepts. Automaton has 2843 states and 4055 transitions. Word has length 163 [2022-01-11 06:45:29,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:29,513 INFO L470 AbstractCegarLoop]: Abstraction has 2843 states and 4055 transitions. [2022-01-11 06:45:29,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:29,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2843 states and 4055 transitions. [2022-01-11 06:45:29,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-11 06:45:29,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:29,516 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] [2022-01-11 06:45:29,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 06:45:29,516 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:29,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:29,516 INFO L85 PathProgramCache]: Analyzing trace with hash -155107194, now seen corresponding path program 1 times [2022-01-11 06:45:29,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:29,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617770051] [2022-01-11 06:45:29,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:29,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:29,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:45:29,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:29,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617770051] [2022-01-11 06:45:29,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617770051] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:29,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:29,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:45:29,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592742509] [2022-01-11 06:45:29,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:29,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:45:29,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:29,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:45:29,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:29,630 INFO L87 Difference]: Start difference. First operand 2843 states and 4055 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:29,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:29,912 INFO L93 Difference]: Finished difference Result 6550 states and 9656 transitions. [2022-01-11 06:45:29,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:45:29,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 164 [2022-01-11 06:45:29,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:29,928 INFO L225 Difference]: With dead ends: 6550 [2022-01-11 06:45:29,928 INFO L226 Difference]: Without dead ends: 4238 [2022-01-11 06:45:29,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:29,931 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 297 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:29,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 973 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:29,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4238 states. [2022-01-11 06:45:30,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4238 to 3824. [2022-01-11 06:45:30,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3824 states, 3823 states have (on average 1.4690034004708343) internal successors, (5616), 3823 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:30,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 5616 transitions. [2022-01-11 06:45:30,213 INFO L78 Accepts]: Start accepts. Automaton has 3824 states and 5616 transitions. Word has length 164 [2022-01-11 06:45:30,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:30,213 INFO L470 AbstractCegarLoop]: Abstraction has 3824 states and 5616 transitions. [2022-01-11 06:45:30,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:30,214 INFO L276 IsEmpty]: Start isEmpty. Operand 3824 states and 5616 transitions. [2022-01-11 06:45:30,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-11 06:45:30,217 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:30,217 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] [2022-01-11 06:45:30,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 06:45:30,217 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:30,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:30,218 INFO L85 PathProgramCache]: Analyzing trace with hash 207689272, now seen corresponding path program 1 times [2022-01-11 06:45:30,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:30,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691002268] [2022-01-11 06:45:30,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:30,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:30,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:45:30,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:30,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691002268] [2022-01-11 06:45:30,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691002268] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:30,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:30,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:45:30,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587083521] [2022-01-11 06:45:30,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:30,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:45:30,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:30,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:45:30,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:30,323 INFO L87 Difference]: Start difference. First operand 3824 states and 5616 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:30,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:30,664 INFO L93 Difference]: Finished difference Result 9061 states and 13477 transitions. [2022-01-11 06:45:30,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:45:30,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 167 [2022-01-11 06:45:30,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:30,675 INFO L225 Difference]: With dead ends: 9061 [2022-01-11 06:45:30,676 INFO L226 Difference]: Without dead ends: 5908 [2022-01-11 06:45:30,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:30,680 INFO L933 BasicCegarLoop]: 835 mSDtfsCounter, 371 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:30,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 1244 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:30,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5908 states. [2022-01-11 06:45:30,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5908 to 5906. [2022-01-11 06:45:31,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5906 states, 5905 states have (on average 1.4563928873835732) internal successors, (8600), 5905 states have internal predecessors, (8600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:31,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5906 states to 5906 states and 8600 transitions. [2022-01-11 06:45:31,015 INFO L78 Accepts]: Start accepts. Automaton has 5906 states and 8600 transitions. Word has length 167 [2022-01-11 06:45:31,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:31,016 INFO L470 AbstractCegarLoop]: Abstraction has 5906 states and 8600 transitions. [2022-01-11 06:45:31,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:31,016 INFO L276 IsEmpty]: Start isEmpty. Operand 5906 states and 8600 transitions. [2022-01-11 06:45:31,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-11 06:45:31,020 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:31,020 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] [2022-01-11 06:45:31,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 06:45:31,020 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:31,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:31,020 INFO L85 PathProgramCache]: Analyzing trace with hash -890070323, now seen corresponding path program 1 times [2022-01-11 06:45:31,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:31,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812514638] [2022-01-11 06:45:31,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:31,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:31,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:45:31,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:31,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812514638] [2022-01-11 06:45:31,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812514638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:31,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:31,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:45:31,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048414762] [2022-01-11 06:45:31,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:31,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:45:31,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:31,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:45:31,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:31,168 INFO L87 Difference]: Start difference. First operand 5906 states and 8600 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:31,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:31,662 INFO L93 Difference]: Finished difference Result 13999 states and 20588 transitions. [2022-01-11 06:45:31,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:45:31,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 167 [2022-01-11 06:45:31,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:31,676 INFO L225 Difference]: With dead ends: 13999 [2022-01-11 06:45:31,677 INFO L226 Difference]: Without dead ends: 9067 [2022-01-11 06:45:31,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:31,683 INFO L933 BasicCegarLoop]: 835 mSDtfsCounter, 377 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:31,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 1245 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:31,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9067 states. [2022-01-11 06:45:32,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9067 to 9065. [2022-01-11 06:45:32,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9065 states, 9064 states have (on average 1.440864960282436) internal successors, (13060), 9064 states have internal predecessors, (13060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:32,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9065 states to 9065 states and 13060 transitions. [2022-01-11 06:45:32,235 INFO L78 Accepts]: Start accepts. Automaton has 9065 states and 13060 transitions. Word has length 167 [2022-01-11 06:45:32,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:32,235 INFO L470 AbstractCegarLoop]: Abstraction has 9065 states and 13060 transitions. [2022-01-11 06:45:32,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:32,236 INFO L276 IsEmpty]: Start isEmpty. Operand 9065 states and 13060 transitions. [2022-01-11 06:45:32,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-11 06:45:32,243 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:32,243 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] [2022-01-11 06:45:32,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 06:45:32,243 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:32,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:32,244 INFO L85 PathProgramCache]: Analyzing trace with hash 236085426, now seen corresponding path program 1 times [2022-01-11 06:45:32,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:32,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088521894] [2022-01-11 06:45:32,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:32,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:32,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:45:32,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:32,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088521894] [2022-01-11 06:45:32,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088521894] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:32,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:32,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:45:32,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663968815] [2022-01-11 06:45:32,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:32,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:45:32,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:32,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:45:32,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:45:32,415 INFO L87 Difference]: Start difference. First operand 9065 states and 13060 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:33,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:33,017 INFO L93 Difference]: Finished difference Result 18136 states and 26131 transitions. [2022-01-11 06:45:33,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:45:33,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 171 [2022-01-11 06:45:33,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:33,035 INFO L225 Difference]: With dead ends: 18136 [2022-01-11 06:45:33,035 INFO L226 Difference]: Without dead ends: 9230 [2022-01-11 06:45:33,046 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 [2022-01-11 06:45:33,046 INFO L933 BasicCegarLoop]: 465 mSDtfsCounter, 1185 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:33,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1185 Valid, 868 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:33,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9230 states. [2022-01-11 06:45:33,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9230 to 9168. [2022-01-11 06:45:33,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9168 states, 9167 states have (on average 1.4365659430566162) internal successors, (13169), 9167 states have internal predecessors, (13169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:33,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9168 states to 9168 states and 13169 transitions. [2022-01-11 06:45:33,625 INFO L78 Accepts]: Start accepts. Automaton has 9168 states and 13169 transitions. Word has length 171 [2022-01-11 06:45:33,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:33,625 INFO L470 AbstractCegarLoop]: Abstraction has 9168 states and 13169 transitions. [2022-01-11 06:45:33,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:33,625 INFO L276 IsEmpty]: Start isEmpty. Operand 9168 states and 13169 transitions. [2022-01-11 06:45:33,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-11 06:45:33,631 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:33,631 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] [2022-01-11 06:45:33,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 06:45:33,631 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:33,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:33,632 INFO L85 PathProgramCache]: Analyzing trace with hash -648939048, now seen corresponding path program 1 times [2022-01-11 06:45:33,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:33,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676220152] [2022-01-11 06:45:33,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:33,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:33,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:45:33,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:33,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676220152] [2022-01-11 06:45:33,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676220152] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:33,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:33,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:45:33,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972029919] [2022-01-11 06:45:33,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:33,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:45:33,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:33,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:45:33,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:33,741 INFO L87 Difference]: Start difference. First operand 9168 states and 13169 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:34,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:34,568 INFO L93 Difference]: Finished difference Result 20759 states and 30527 transitions. [2022-01-11 06:45:34,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:45:34,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 171 [2022-01-11 06:45:34,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:34,593 INFO L225 Difference]: With dead ends: 20759 [2022-01-11 06:45:34,593 INFO L226 Difference]: Without dead ends: 13859 [2022-01-11 06:45:34,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:34,601 INFO L933 BasicCegarLoop]: 638 mSDtfsCounter, 289 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:34,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 950 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:34,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13859 states. [2022-01-11 06:45:35,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13859 to 12901. [2022-01-11 06:45:35,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12901 states, 12900 states have (on average 1.4706201550387596) internal successors, (18971), 12900 states have internal predecessors, (18971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:35,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12901 states to 12901 states and 18971 transitions. [2022-01-11 06:45:35,526 INFO L78 Accepts]: Start accepts. Automaton has 12901 states and 18971 transitions. Word has length 171 [2022-01-11 06:45:35,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:35,526 INFO L470 AbstractCegarLoop]: Abstraction has 12901 states and 18971 transitions. [2022-01-11 06:45:35,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:35,526 INFO L276 IsEmpty]: Start isEmpty. Operand 12901 states and 18971 transitions. [2022-01-11 06:45:35,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-11 06:45:35,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:35,531 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:45:35,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 06:45:35,532 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:35,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:35,532 INFO L85 PathProgramCache]: Analyzing trace with hash -569658, now seen corresponding path program 1 times [2022-01-11 06:45:35,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:35,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597856698] [2022-01-11 06:45:35,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:35,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:35,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:45:35,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:35,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597856698] [2022-01-11 06:45:35,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597856698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:35,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:35,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:45:35,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682217102] [2022-01-11 06:45:35,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:35,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:45:35,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:35,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:45:35,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:35,624 INFO L87 Difference]: Start difference. First operand 12901 states and 18971 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:37,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:37,220 INFO L93 Difference]: Finished difference Result 34794 states and 51364 transitions. [2022-01-11 06:45:37,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:45:37,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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 172 [2022-01-11 06:45:37,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:37,262 INFO L225 Difference]: With dead ends: 34794 [2022-01-11 06:45:37,262 INFO L226 Difference]: Without dead ends: 25590 [2022-01-11 06:45:37,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:37,280 INFO L933 BasicCegarLoop]: 882 mSDtfsCounter, 427 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:37,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 1331 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:37,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25590 states. [2022-01-11 06:45:38,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25590 to 12911. [2022-01-11 06:45:38,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12911 states, 12910 states have (on average 1.4702556158017042) internal successors, (18981), 12910 states have internal predecessors, (18981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:38,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12911 states to 12911 states and 18981 transitions. [2022-01-11 06:45:38,308 INFO L78 Accepts]: Start accepts. Automaton has 12911 states and 18981 transitions. Word has length 172 [2022-01-11 06:45:38,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:38,308 INFO L470 AbstractCegarLoop]: Abstraction has 12911 states and 18981 transitions. [2022-01-11 06:45:38,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:38,308 INFO L276 IsEmpty]: Start isEmpty. Operand 12911 states and 18981 transitions. [2022-01-11 06:45:38,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-01-11 06:45:38,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:38,313 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] [2022-01-11 06:45:38,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 06:45:38,314 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:38,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:38,314 INFO L85 PathProgramCache]: Analyzing trace with hash 892644407, now seen corresponding path program 1 times [2022-01-11 06:45:38,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:38,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113181571] [2022-01-11 06:45:38,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:38,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:38,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:45:38,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:38,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113181571] [2022-01-11 06:45:38,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113181571] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:38,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:38,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:45:38,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43382651] [2022-01-11 06:45:38,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:38,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:45:38,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:38,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:45:38,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:45:38,448 INFO L87 Difference]: Start difference. First operand 12911 states and 18981 transitions. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:40,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:40,160 INFO L93 Difference]: Finished difference Result 33576 states and 49392 transitions. [2022-01-11 06:45:40,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:45:40,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 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 173 [2022-01-11 06:45:40,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:40,193 INFO L225 Difference]: With dead ends: 33576 [2022-01-11 06:45:40,193 INFO L226 Difference]: Without dead ends: 21676 [2022-01-11 06:45:40,207 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 [2022-01-11 06:45:40,207 INFO L933 BasicCegarLoop]: 1038 mSDtfsCounter, 1317 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:40,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1317 Valid, 1871 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:45:40,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21676 states. [2022-01-11 06:45:41,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21676 to 13174. [2022-01-11 06:45:41,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13174 states, 13173 states have (on average 1.4623851818112807) internal successors, (19264), 13173 states have internal predecessors, (19264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:41,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13174 states to 13174 states and 19264 transitions. [2022-01-11 06:45:41,296 INFO L78 Accepts]: Start accepts. Automaton has 13174 states and 19264 transitions. Word has length 173 [2022-01-11 06:45:41,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:41,296 INFO L470 AbstractCegarLoop]: Abstraction has 13174 states and 19264 transitions. [2022-01-11 06:45:41,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:41,296 INFO L276 IsEmpty]: Start isEmpty. Operand 13174 states and 19264 transitions. [2022-01-11 06:45:41,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-01-11 06:45:41,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:41,302 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] [2022-01-11 06:45:41,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 06:45:41,303 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:41,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:41,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1917668435, now seen corresponding path program 1 times [2022-01-11 06:45:41,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:41,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091385251] [2022-01-11 06:45:41,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:41,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:41,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:45:41,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:41,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091385251] [2022-01-11 06:45:41,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091385251] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:41,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:41,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:45:41,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280008490] [2022-01-11 06:45:41,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:41,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:45:41,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:41,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:45:41,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:45:41,401 INFO L87 Difference]: Start difference. First operand 13174 states and 19264 transitions. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:42,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:42,303 INFO L93 Difference]: Finished difference Result 21583 states and 31660 transitions. [2022-01-11 06:45:42,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:45:42,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 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 173 [2022-01-11 06:45:42,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:42,318 INFO L225 Difference]: With dead ends: 21583 [2022-01-11 06:45:42,319 INFO L226 Difference]: Without dead ends: 11927 [2022-01-11 06:45:42,326 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 [2022-01-11 06:45:42,326 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 23 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:42,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 1382 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:42,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11927 states. [2022-01-11 06:45:43,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11927 to 11927. [2022-01-11 06:45:43,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11927 states, 11926 states have (on average 1.4654536307227906) internal successors, (17477), 11926 states have internal predecessors, (17477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:43,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11927 states to 11927 states and 17477 transitions. [2022-01-11 06:45:43,170 INFO L78 Accepts]: Start accepts. Automaton has 11927 states and 17477 transitions. Word has length 173 [2022-01-11 06:45:43,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:43,171 INFO L470 AbstractCegarLoop]: Abstraction has 11927 states and 17477 transitions. [2022-01-11 06:45:43,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:43,171 INFO L276 IsEmpty]: Start isEmpty. Operand 11927 states and 17477 transitions. [2022-01-11 06:45:43,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 06:45:43,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:43,176 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] [2022-01-11 06:45:43,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 06:45:43,176 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:43,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:43,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1745354314, now seen corresponding path program 1 times [2022-01-11 06:45:43,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:43,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710849579] [2022-01-11 06:45:43,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:43,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:43,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:45:43,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:43,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710849579] [2022-01-11 06:45:43,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710849579] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:43,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:43,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:45:43,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309051619] [2022-01-11 06:45:43,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:43,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:45:43,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:43,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:45:43,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:45:43,306 INFO L87 Difference]: Start difference. First operand 11927 states and 17477 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:45,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:45,144 INFO L93 Difference]: Finished difference Result 33026 states and 49479 transitions. [2022-01-11 06:45:45,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:45:45,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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 176 [2022-01-11 06:45:45,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:45,177 INFO L225 Difference]: With dead ends: 33026 [2022-01-11 06:45:45,177 INFO L226 Difference]: Without dead ends: 23448 [2022-01-11 06:45:45,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:45:45,189 INFO L933 BasicCegarLoop]: 959 mSDtfsCounter, 685 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 2088 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:45,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 2088 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:45,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23448 states. [2022-01-11 06:45:46,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23448 to 12429. [2022-01-11 06:45:46,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12429 states, 12428 states have (on average 1.4509977470228517) internal successors, (18033), 12428 states have internal predecessors, (18033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:46,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12429 states to 12429 states and 18033 transitions. [2022-01-11 06:45:46,259 INFO L78 Accepts]: Start accepts. Automaton has 12429 states and 18033 transitions. Word has length 176 [2022-01-11 06:45:46,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:46,259 INFO L470 AbstractCegarLoop]: Abstraction has 12429 states and 18033 transitions. [2022-01-11 06:45:46,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:46,260 INFO L276 IsEmpty]: Start isEmpty. Operand 12429 states and 18033 transitions. [2022-01-11 06:45:46,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 06:45:46,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:46,264 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] [2022-01-11 06:45:46,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 06:45:46,265 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:46,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:46,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1758887115, now seen corresponding path program 1 times [2022-01-11 06:45:46,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:46,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662480002] [2022-01-11 06:45:46,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:46,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:46,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:45:46,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:46,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662480002] [2022-01-11 06:45:46,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662480002] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:46,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:46,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:45:46,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599093852] [2022-01-11 06:45:46,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:46,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:45:46,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:46,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:45:46,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:45:46,396 INFO L87 Difference]: Start difference. First operand 12429 states and 18033 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:48,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:48,355 INFO L93 Difference]: Finished difference Result 33468 states and 49825 transitions. [2022-01-11 06:45:48,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:45:48,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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 176 [2022-01-11 06:45:48,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:48,390 INFO L225 Difference]: With dead ends: 33468 [2022-01-11 06:45:48,390 INFO L226 Difference]: Without dead ends: 24131 [2022-01-11 06:45:48,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:45:48,403 INFO L933 BasicCegarLoop]: 936 mSDtfsCounter, 681 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 2032 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:48,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 2032 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:48,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24131 states. [2022-01-11 06:45:49,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24131 to 13442. [2022-01-11 06:45:49,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13442 states, 13441 states have (on average 1.4266051633063017) internal successors, (19175), 13441 states have internal predecessors, (19175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:49,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13442 states to 13442 states and 19175 transitions. [2022-01-11 06:45:49,628 INFO L78 Accepts]: Start accepts. Automaton has 13442 states and 19175 transitions. Word has length 176 [2022-01-11 06:45:49,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:49,628 INFO L470 AbstractCegarLoop]: Abstraction has 13442 states and 19175 transitions. [2022-01-11 06:45:49,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:49,629 INFO L276 IsEmpty]: Start isEmpty. Operand 13442 states and 19175 transitions. [2022-01-11 06:45:49,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 06:45:49,634 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:49,634 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] [2022-01-11 06:45:49,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 06:45:49,635 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:49,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:49,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1581851286, now seen corresponding path program 1 times [2022-01-11 06:45:49,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:49,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445682303] [2022-01-11 06:45:49,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:49,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:50,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:45:50,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:50,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445682303] [2022-01-11 06:45:50,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445682303] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:50,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:50,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-11 06:45:50,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946114060] [2022-01-11 06:45:50,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:50,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-11 06:45:50,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:50,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-11 06:45:50,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-01-11 06:45:50,759 INFO L87 Difference]: Start difference. First operand 13442 states and 19175 transitions. Second operand has 15 states, 15 states have (on average 11.733333333333333) internal successors, (176), 14 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:58,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []