/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/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:10:40,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:10:40,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:10:40,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:10:40,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:10:40,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:10:40,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:10:40,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:10:40,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:10:40,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:10:40,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:10:40,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:10:40,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:10:40,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:10:40,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:10:40,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:10:40,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:10:40,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:10:40,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:10:40,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:10:40,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:10:40,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:10:40,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:10:40,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:10:40,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:10:40,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:10:40,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:10:40,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:10:40,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:10:40,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:10:40,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:10:40,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:10:40,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:10:40,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:10:40,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:10:40,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:10:40,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:10:40,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:10:40,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:10:40,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:10:40,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:10:40,612 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 06:10:40,631 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:10:40,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:10:40,631 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:10:40,631 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:10:40,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:10:40,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:10:40,632 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:10:40,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:10:40,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:10:40,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:10:40,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:10:40,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:10:40,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:10:40,633 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:10:40,633 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:10:40,633 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:10:40,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:10:40,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:10:40,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:10:40,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:10:40,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:10:40,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:10:40,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:10:40,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:10:40,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:10:40,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:10:40,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:10:40,634 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:10:40,634 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:10:40,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:10:40,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:10:40,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:10:40,635 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:10:40,635 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:10:40,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:10:40,813 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:10:40,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:10:40,816 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:10:40,818 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:10:40,819 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c [2022-01-11 06:10:40,859 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a536f5cd/e8f76fe9d1a546b6aafa793b5da49ef9/FLAGd99910837 [2022-01-11 06:10:41,229 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:10:41,230 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c [2022-01-11 06:10:41,240 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a536f5cd/e8f76fe9d1a546b6aafa793b5da49ef9/FLAGd99910837 [2022-01-11 06:10:41,616 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a536f5cd/e8f76fe9d1a546b6aafa793b5da49ef9 [2022-01-11 06:10:41,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:10:41,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:10:41,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:10:41,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:10:41,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:10:41,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:10:41" (1/1) ... [2022-01-11 06:10:41,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc2ff17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:10:41, skipping insertion in model container [2022-01-11 06:10:41,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:10:41" (1/1) ... [2022-01-11 06:10:41,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:10:41,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:10:41,898 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/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c[28368,28381] [2022-01-11 06:10:41,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:10:41,924 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:10:42,003 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/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c[28368,28381] [2022-01-11 06:10:42,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:10:42,015 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:10:42,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:10:42 WrapperNode [2022-01-11 06:10:42,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:10:42,016 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:10:42,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:10:42,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:10:42,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:10:42" (1/1) ... [2022-01-11 06:10:42,049 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:10:42" (1/1) ... [2022-01-11 06:10:42,089 INFO L137 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 930 [2022-01-11 06:10:42,089 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:10:42,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:10:42,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:10:42,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:10:42,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:10:42" (1/1) ... [2022-01-11 06:10:42,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:10:42" (1/1) ... [2022-01-11 06:10:42,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:10:42" (1/1) ... [2022-01-11 06:10:42,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:10:42" (1/1) ... [2022-01-11 06:10:42,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:10:42" (1/1) ... [2022-01-11 06:10:42,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:10:42" (1/1) ... [2022-01-11 06:10:42,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:10:42" (1/1) ... [2022-01-11 06:10:42,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:10:42,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:10:42,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:10:42,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:10:42,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:10:42" (1/1) ... [2022-01-11 06:10:42,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:10:42,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:10:42,193 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 06:10:42,231 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 06:10:42,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:10:42,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:10:42,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:10:42,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:10:42,401 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:10:42,402 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:10:43,079 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:10:43,088 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:10:43,089 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 06:10:43,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:10:43 BoogieIcfgContainer [2022-01-11 06:10:43,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:10:43,102 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:10:43,102 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:10:43,104 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:10:43,121 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:10:43" (1/1) ... [2022-01-11 06:10:43,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:10:43 BasicIcfg [2022-01-11 06:10:43,561 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:10:43,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:10:43,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:10:43,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:10:43,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:10:41" (1/4) ... [2022-01-11 06:10:43,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d547fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:10:43, skipping insertion in model container [2022-01-11 06:10:43,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:10:42" (2/4) ... [2022-01-11 06:10:43,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d547fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:10:43, skipping insertion in model container [2022-01-11 06:10:43,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:10:43" (3/4) ... [2022-01-11 06:10:43,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d547fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:10:43, skipping insertion in model container [2022-01-11 06:10:43,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:10:43" (4/4) ... [2022-01-11 06:10:43,569 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.UNBOUNDED.pals.cTransformedIcfg [2022-01-11 06:10:43,573 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:10:43,573 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:10:43,617 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:10:43,621 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 06:10:43,621 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:10:43,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 312 states, 310 states have (on average 1.8) internal successors, (558), 311 states have internal predecessors, (558), 0 states have call successors, (0), 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 06:10:43,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 06:10:43,642 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:43,642 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] [2022-01-11 06:10:43,643 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:43,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:43,646 INFO L85 PathProgramCache]: Analyzing trace with hash -428531829, now seen corresponding path program 1 times [2022-01-11 06:10:43,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:43,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409939758] [2022-01-11 06:10:43,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:43,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:44,049 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 06:10:44,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:44,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409939758] [2022-01-11 06:10:44,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409939758] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:44,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:44,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:10:44,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293283435] [2022-01-11 06:10:44,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:44,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:10:44,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:44,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:10:44,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:10:44,084 INFO L87 Difference]: Start difference. First operand has 312 states, 310 states have (on average 1.8) internal successors, (558), 311 states have internal predecessors, (558), 0 states have call successors, (0), 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 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 06:10:44,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:44,218 INFO L93 Difference]: Finished difference Result 432 states and 763 transitions. [2022-01-11 06:10:44,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:10:44,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-11 06:10:44,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:44,229 INFO L225 Difference]: With dead ends: 432 [2022-01-11 06:10:44,230 INFO L226 Difference]: Without dead ends: 308 [2022-01-11 06:10:44,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:10:44,249 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 3 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2151 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:44,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2151 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:10:44,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-01-11 06:10:44,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2022-01-11 06:10:44,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.6579804560260587) internal successors, (509), 307 states have internal predecessors, (509), 0 states have call successors, (0), 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 06:10:44,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 509 transitions. [2022-01-11 06:10:44,316 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 509 transitions. Word has length 77 [2022-01-11 06:10:44,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:44,317 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 509 transitions. [2022-01-11 06:10:44,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 06:10:44,317 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 509 transitions. [2022-01-11 06:10:44,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-11 06:10:44,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:44,320 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] [2022-01-11 06:10:44,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:10:44,321 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:44,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:44,321 INFO L85 PathProgramCache]: Analyzing trace with hash -311787973, now seen corresponding path program 1 times [2022-01-11 06:10:44,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:44,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737068292] [2022-01-11 06:10:44,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:44,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:44,617 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 06:10:44,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:44,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737068292] [2022-01-11 06:10:44,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737068292] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:44,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:44,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:10:44,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124050766] [2022-01-11 06:10:44,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:44,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:10:44,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:44,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:10:44,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:10:44,620 INFO L87 Difference]: Start difference. First operand 308 states and 509 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 06:10:44,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:44,663 INFO L93 Difference]: Finished difference Result 529 states and 882 transitions. [2022-01-11 06:10:44,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:10:44,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2022-01-11 06:10:44,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:44,668 INFO L225 Difference]: With dead ends: 529 [2022-01-11 06:10:44,669 INFO L226 Difference]: Without dead ends: 413 [2022-01-11 06:10:44,673 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 06:10:44,674 INFO L933 BasicCegarLoop]: 503 mSDtfsCounter, 167 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:44,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 959 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:10:44,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-01-11 06:10:44,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 410. [2022-01-11 06:10:44,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.6552567237163813) internal successors, (677), 409 states have internal predecessors, (677), 0 states have call successors, (0), 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 06:10:44,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 677 transitions. [2022-01-11 06:10:44,695 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 677 transitions. Word has length 118 [2022-01-11 06:10:44,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:44,695 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 677 transitions. [2022-01-11 06:10:44,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 06:10:44,695 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 677 transitions. [2022-01-11 06:10:44,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-11 06:10:44,697 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:44,697 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] [2022-01-11 06:10:44,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:10:44,698 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:44,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:44,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1142481106, now seen corresponding path program 1 times [2022-01-11 06:10:44,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:44,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430618087] [2022-01-11 06:10:44,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:44,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:44,896 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 06:10:44,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:44,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430618087] [2022-01-11 06:10:44,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430618087] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:44,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:44,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:10:44,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696621234] [2022-01-11 06:10:44,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:44,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:10:44,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:44,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:10:44,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:10:44,900 INFO L87 Difference]: Start difference. First operand 410 states and 677 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 06:10:44,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:44,986 INFO L93 Difference]: Finished difference Result 1168 states and 1920 transitions. [2022-01-11 06:10:44,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:10:44,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2022-01-11 06:10:44,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:44,991 INFO L225 Difference]: With dead ends: 1168 [2022-01-11 06:10:44,991 INFO L226 Difference]: Without dead ends: 805 [2022-01-11 06:10:44,995 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 06:10:44,998 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 1371 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:45,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1371 Valid, 984 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:10:45,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-01-11 06:10:45,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 803. [2022-01-11 06:10:45,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 1.644638403990025) internal successors, (1319), 802 states have internal predecessors, (1319), 0 states have call successors, (0), 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 06:10:45,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1319 transitions. [2022-01-11 06:10:45,028 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1319 transitions. Word has length 121 [2022-01-11 06:10:45,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:45,029 INFO L470 AbstractCegarLoop]: Abstraction has 803 states and 1319 transitions. [2022-01-11 06:10:45,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 06:10:45,030 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1319 transitions. [2022-01-11 06:10:45,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-11 06:10:45,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:45,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:10:45,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:10:45,039 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:45,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:45,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1032926999, now seen corresponding path program 1 times [2022-01-11 06:10:45,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:45,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493024978] [2022-01-11 06:10:45,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:45,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:45,174 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 06:10:45,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:45,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493024978] [2022-01-11 06:10:45,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493024978] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:45,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:45,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:10:45,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058752094] [2022-01-11 06:10:45,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:45,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:10:45,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:45,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:10:45,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:10:45,176 INFO L87 Difference]: Start difference. First operand 803 states and 1319 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 06:10:45,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:45,203 INFO L93 Difference]: Finished difference Result 1221 states and 2027 transitions. [2022-01-11 06:10:45,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:10:45,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2022-01-11 06:10:45,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:45,208 INFO L225 Difference]: With dead ends: 1221 [2022-01-11 06:10:45,208 INFO L226 Difference]: Without dead ends: 992 [2022-01-11 06:10:45,209 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 06:10:45,214 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 174 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:45,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 1134 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:10:45,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2022-01-11 06:10:45,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 990. [2022-01-11 06:10:45,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 989 states have (on average 1.6521739130434783) internal successors, (1634), 989 states have internal predecessors, (1634), 0 states have call successors, (0), 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 06:10:45,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1634 transitions. [2022-01-11 06:10:45,242 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1634 transitions. Word has length 123 [2022-01-11 06:10:45,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:45,243 INFO L470 AbstractCegarLoop]: Abstraction has 990 states and 1634 transitions. [2022-01-11 06:10:45,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 06:10:45,244 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1634 transitions. [2022-01-11 06:10:45,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-11 06:10:45,246 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:45,246 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] [2022-01-11 06:10:45,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:10:45,246 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:45,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:45,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1691845468, now seen corresponding path program 1 times [2022-01-11 06:10:45,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:45,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128524963] [2022-01-11 06:10:45,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:45,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:45,407 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 06:10:45,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:45,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128524963] [2022-01-11 06:10:45,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128524963] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:45,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:45,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:10:45,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033361966] [2022-01-11 06:10:45,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:45,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:10:45,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:45,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:10:45,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:10:45,410 INFO L87 Difference]: Start difference. First operand 990 states and 1634 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 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 06:10:45,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:45,494 INFO L93 Difference]: Finished difference Result 2928 states and 4829 transitions. [2022-01-11 06:10:45,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:10:45,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2022-01-11 06:10:45,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:45,501 INFO L225 Difference]: With dead ends: 2928 [2022-01-11 06:10:45,501 INFO L226 Difference]: Without dead ends: 1950 [2022-01-11 06:10:45,503 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 06:10:45,503 INFO L933 BasicCegarLoop]: 509 mSDtfsCounter, 1353 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:45,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1353 Valid, 989 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:10:45,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2022-01-11 06:10:45,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1948. [2022-01-11 06:10:45,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1947 states have (on average 1.6399589111453519) internal successors, (3193), 1947 states have internal predecessors, (3193), 0 states have call successors, (0), 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 06:10:45,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 3193 transitions. [2022-01-11 06:10:45,560 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 3193 transitions. Word has length 123 [2022-01-11 06:10:45,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:45,561 INFO L470 AbstractCegarLoop]: Abstraction has 1948 states and 3193 transitions. [2022-01-11 06:10:45,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 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 06:10:45,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 3193 transitions. [2022-01-11 06:10:45,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-11 06:10:45,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:45,569 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] [2022-01-11 06:10:45,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:10:45,569 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:45,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:45,570 INFO L85 PathProgramCache]: Analyzing trace with hash -822152145, now seen corresponding path program 1 times [2022-01-11 06:10:45,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:45,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578372163] [2022-01-11 06:10:45,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:45,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:45,725 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 06:10:45,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:45,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578372163] [2022-01-11 06:10:45,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578372163] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:45,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:45,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:10:45,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032930605] [2022-01-11 06:10:45,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:45,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:10:45,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:45,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:10:45,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:10:45,727 INFO L87 Difference]: Start difference. First operand 1948 states and 3193 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 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 06:10:45,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:45,903 INFO L93 Difference]: Finished difference Result 5693 states and 9315 transitions. [2022-01-11 06:10:45,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:10:45,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2022-01-11 06:10:45,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:45,921 INFO L225 Difference]: With dead ends: 5693 [2022-01-11 06:10:45,921 INFO L226 Difference]: Without dead ends: 3851 [2022-01-11 06:10:45,926 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 06:10:45,928 INFO L933 BasicCegarLoop]: 520 mSDtfsCounter, 1347 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:45,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1347 Valid, 1000 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:10:45,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3851 states. [2022-01-11 06:10:46,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3851 to 3849. [2022-01-11 06:10:46,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3849 states, 3848 states have (on average 1.6296777546777548) internal successors, (6271), 3848 states have internal predecessors, (6271), 0 states have call successors, (0), 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 06:10:46,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 6271 transitions. [2022-01-11 06:10:46,105 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 6271 transitions. Word has length 125 [2022-01-11 06:10:46,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:46,105 INFO L470 AbstractCegarLoop]: Abstraction has 3849 states and 6271 transitions. [2022-01-11 06:10:46,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 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 06:10:46,105 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 6271 transitions. [2022-01-11 06:10:46,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-11 06:10:46,110 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:46,111 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] [2022-01-11 06:10:46,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:10:46,111 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:46,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:46,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1294719708, now seen corresponding path program 1 times [2022-01-11 06:10:46,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:46,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900768954] [2022-01-11 06:10:46,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:46,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:46,363 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 06:10:46,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:46,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900768954] [2022-01-11 06:10:46,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900768954] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:46,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:46,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:10:46,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148610018] [2022-01-11 06:10:46,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:46,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:10:46,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:46,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:10:46,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:10:46,366 INFO L87 Difference]: Start difference. First operand 3849 states and 6271 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 06:10:46,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:46,563 INFO L93 Difference]: Finished difference Result 8409 states and 13829 transitions. [2022-01-11 06:10:46,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:10:46,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2022-01-11 06:10:46,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:46,587 INFO L225 Difference]: With dead ends: 8409 [2022-01-11 06:10:46,588 INFO L226 Difference]: Without dead ends: 6027 [2022-01-11 06:10:46,595 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 06:10:46,596 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 162 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:46,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 981 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:10:46,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6027 states. [2022-01-11 06:10:46,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6027 to 6001. [2022-01-11 06:10:46,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6001 states, 6000 states have (on average 1.6318333333333332) internal successors, (9791), 6000 states have internal predecessors, (9791), 0 states have call successors, (0), 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 06:10:46,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6001 states to 6001 states and 9791 transitions. [2022-01-11 06:10:46,887 INFO L78 Accepts]: Start accepts. Automaton has 6001 states and 9791 transitions. Word has length 127 [2022-01-11 06:10:46,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:46,887 INFO L470 AbstractCegarLoop]: Abstraction has 6001 states and 9791 transitions. [2022-01-11 06:10:46,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 06:10:46,887 INFO L276 IsEmpty]: Start isEmpty. Operand 6001 states and 9791 transitions. [2022-01-11 06:10:46,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-11 06:10:46,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:46,894 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] [2022-01-11 06:10:46,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:10:46,895 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:46,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:46,896 INFO L85 PathProgramCache]: Analyzing trace with hash 2081371011, now seen corresponding path program 1 times [2022-01-11 06:10:46,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:46,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146127356] [2022-01-11 06:10:46,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:46,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:47,112 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 06:10:47,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:47,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146127356] [2022-01-11 06:10:47,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146127356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:47,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:47,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:10:47,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005361141] [2022-01-11 06:10:47,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:47,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:10:47,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:47,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:10:47,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:10:47,115 INFO L87 Difference]: Start difference. First operand 6001 states and 9791 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 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 06:10:47,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:47,620 INFO L93 Difference]: Finished difference Result 17517 states and 28545 transitions. [2022-01-11 06:10:47,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:10:47,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2022-01-11 06:10:47,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:47,683 INFO L225 Difference]: With dead ends: 17517 [2022-01-11 06:10:47,683 INFO L226 Difference]: Without dead ends: 11759 [2022-01-11 06:10:47,694 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 06:10:47,695 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 1292 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:47,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1292 Valid, 984 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:10:47,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11759 states. [2022-01-11 06:10:48,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11759 to 11757. [2022-01-11 06:10:48,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11757 states, 11756 states have (on average 1.6232562095951004) internal successors, (19083), 11756 states have internal predecessors, (19083), 0 states have call successors, (0), 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 06:10:48,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11757 states to 11757 states and 19083 transitions. [2022-01-11 06:10:48,273 INFO L78 Accepts]: Start accepts. Automaton has 11757 states and 19083 transitions. Word has length 130 [2022-01-11 06:10:48,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:48,275 INFO L470 AbstractCegarLoop]: Abstraction has 11757 states and 19083 transitions. [2022-01-11 06:10:48,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 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 06:10:48,276 INFO L276 IsEmpty]: Start isEmpty. Operand 11757 states and 19083 transitions. [2022-01-11 06:10:48,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 06:10:48,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:48,287 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] [2022-01-11 06:10:48,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:10:48,287 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:48,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:48,287 INFO L85 PathProgramCache]: Analyzing trace with hash -894181863, now seen corresponding path program 1 times [2022-01-11 06:10:48,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:48,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797370632] [2022-01-11 06:10:48,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:48,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:48,419 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 06:10:48,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:48,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797370632] [2022-01-11 06:10:48,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797370632] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:48,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:48,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:10:48,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591459128] [2022-01-11 06:10:48,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:48,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:10:48,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:48,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:10:48,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:10:48,421 INFO L87 Difference]: Start difference. First operand 11757 states and 19083 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 06:10:49,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:49,137 INFO L93 Difference]: Finished difference Result 34009 states and 55059 transitions. [2022-01-11 06:10:49,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:10:49,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 06:10:49,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:49,178 INFO L225 Difference]: With dead ends: 34009 [2022-01-11 06:10:49,179 INFO L226 Difference]: Without dead ends: 23119 [2022-01-11 06:10:49,193 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 06:10:49,194 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 1317 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:49,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1317 Valid, 996 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:10:49,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23119 states. [2022-01-11 06:10:50,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23119 to 23117. [2022-01-11 06:10:50,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23117 states, 23116 states have (on average 1.6117407856030455) internal successors, (37257), 23116 states have internal predecessors, (37257), 0 states have call successors, (0), 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 06:10:50,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23117 states to 23117 states and 37257 transitions. [2022-01-11 06:10:50,181 INFO L78 Accepts]: Start accepts. Automaton has 23117 states and 37257 transitions. Word has length 132 [2022-01-11 06:10:50,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:50,181 INFO L470 AbstractCegarLoop]: Abstraction has 23117 states and 37257 transitions. [2022-01-11 06:10:50,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 06:10:50,181 INFO L276 IsEmpty]: Start isEmpty. Operand 23117 states and 37257 transitions. [2022-01-11 06:10:50,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 06:10:50,197 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:50,198 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] [2022-01-11 06:10:50,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:10:50,198 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:50,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:50,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1215114272, now seen corresponding path program 1 times [2022-01-11 06:10:50,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:50,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292673636] [2022-01-11 06:10:50,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:50,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:50,290 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 06:10:50,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:50,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292673636] [2022-01-11 06:10:50,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292673636] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:50,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:50,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:10:50,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763366113] [2022-01-11 06:10:50,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:50,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:10:50,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:50,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:10:50,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:10:50,292 INFO L87 Difference]: Start difference. First operand 23117 states and 37257 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 06:10:51,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:51,120 INFO L93 Difference]: Finished difference Result 40129 states and 65179 transitions. [2022-01-11 06:10:51,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:10:51,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 06:10:51,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:51,192 INFO L225 Difference]: With dead ends: 40129 [2022-01-11 06:10:51,192 INFO L226 Difference]: Without dead ends: 30831 [2022-01-11 06:10:51,211 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 06:10:51,212 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 163 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:51,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 1124 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:10:51,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30831 states. [2022-01-11 06:10:52,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30831 to 30829. [2022-01-11 06:10:52,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30829 states, 30828 states have (on average 1.6133709614636045) internal successors, (49737), 30828 states have internal predecessors, (49737), 0 states have call successors, (0), 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 06:10:52,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30829 states to 30829 states and 49737 transitions. [2022-01-11 06:10:52,424 INFO L78 Accepts]: Start accepts. Automaton has 30829 states and 49737 transitions. Word has length 132 [2022-01-11 06:10:52,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:52,424 INFO L470 AbstractCegarLoop]: Abstraction has 30829 states and 49737 transitions. [2022-01-11 06:10:52,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 06:10:52,425 INFO L276 IsEmpty]: Start isEmpty. Operand 30829 states and 49737 transitions. [2022-01-11 06:10:52,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-11 06:10:52,444 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:52,444 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] [2022-01-11 06:10:52,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:10:52,445 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:52,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:52,446 INFO L85 PathProgramCache]: Analyzing trace with hash -397415100, now seen corresponding path program 1 times [2022-01-11 06:10:52,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:52,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982456432] [2022-01-11 06:10:52,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:52,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:52,656 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 06:10:52,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:52,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982456432] [2022-01-11 06:10:52,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982456432] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:52,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:52,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:10:52,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097049105] [2022-01-11 06:10:52,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:52,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:10:52,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:52,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:10:52,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:10:52,659 INFO L87 Difference]: Start difference. First operand 30829 states and 49737 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 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 06:10:54,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:54,588 INFO L93 Difference]: Finished difference Result 90587 states and 145891 transitions. [2022-01-11 06:10:54,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:10:54,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2022-01-11 06:10:54,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:54,718 INFO L225 Difference]: With dead ends: 90587 [2022-01-11 06:10:54,719 INFO L226 Difference]: Without dead ends: 60809 [2022-01-11 06:10:54,760 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 06:10:54,761 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 1274 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:54,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1274 Valid, 1011 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:10:54,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60809 states. [2022-01-11 06:10:56,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60809 to 60807. [2022-01-11 06:10:56,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60807 states, 60806 states have (on average 1.602226753938756) internal successors, (97425), 60806 states have internal predecessors, (97425), 0 states have call successors, (0), 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 06:10:56,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60807 states to 60807 states and 97425 transitions. [2022-01-11 06:10:56,973 INFO L78 Accepts]: Start accepts. Automaton has 60807 states and 97425 transitions. Word has length 134 [2022-01-11 06:10:56,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:56,975 INFO L470 AbstractCegarLoop]: Abstraction has 60807 states and 97425 transitions. [2022-01-11 06:10:56,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 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 06:10:56,975 INFO L276 IsEmpty]: Start isEmpty. Operand 60807 states and 97425 transitions. [2022-01-11 06:10:57,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-11 06:10:57,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:57,008 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] [2022-01-11 06:10:57,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:10:57,008 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:57,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:57,008 INFO L85 PathProgramCache]: Analyzing trace with hash 421917401, now seen corresponding path program 1 times [2022-01-11 06:10:57,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:57,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064769974] [2022-01-11 06:10:57,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:57,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:57,172 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 06:10:57,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:57,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064769974] [2022-01-11 06:10:57,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064769974] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:57,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:57,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:10:57,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337473910] [2022-01-11 06:10:57,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:57,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:10:57,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:57,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:10:57,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:10:57,174 INFO L87 Difference]: Start difference. First operand 60807 states and 97425 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 06:11:00,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:11:00,654 INFO L93 Difference]: Finished difference Result 154891 states and 249491 transitions. [2022-01-11 06:11:00,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:11:00,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2022-01-11 06:11:00,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:11:00,964 INFO L225 Difference]: With dead ends: 154891 [2022-01-11 06:11:00,964 INFO L226 Difference]: Without dead ends: 105545 [2022-01-11 06:11:01,034 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 06:11:01,035 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 149 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:11:01,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 984 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:11:01,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105545 states. [2022-01-11 06:11:05,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105545 to 104967. [2022-01-11 06:11:05,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104967 states, 104966 states have (on average 1.597631614046453) internal successors, (167697), 104966 states have internal predecessors, (167697), 0 states have call successors, (0), 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 06:11:06,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104967 states to 104967 states and 167697 transitions. [2022-01-11 06:11:06,209 INFO L78 Accepts]: Start accepts. Automaton has 104967 states and 167697 transitions. Word has length 136 [2022-01-11 06:11:06,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:11:06,210 INFO L470 AbstractCegarLoop]: Abstraction has 104967 states and 167697 transitions. [2022-01-11 06:11:06,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 06:11:06,211 INFO L276 IsEmpty]: Start isEmpty. Operand 104967 states and 167697 transitions. [2022-01-11 06:11:06,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-11 06:11:06,244 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:11:06,244 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] [2022-01-11 06:11:06,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 06:11:06,244 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:11:06,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:11:06,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1928135857, now seen corresponding path program 1 times [2022-01-11 06:11:06,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:11:06,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744692571] [2022-01-11 06:11:06,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:11:06,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:11:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:11:06,605 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 06:11:06,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:11:06,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744692571] [2022-01-11 06:11:06,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744692571] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:11:06,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:11:06,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:11:06,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904586782] [2022-01-11 06:11:06,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:11:06,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:11:06,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:11:06,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:11:06,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:11:06,608 INFO L87 Difference]: Start difference. First operand 104967 states and 167697 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 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 06:11:14,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:11:14,996 INFO L93 Difference]: Finished difference Result 309057 states and 493399 transitions. [2022-01-11 06:11:14,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:11:14,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2022-01-11 06:11:14,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:11:15,639 INFO L225 Difference]: With dead ends: 309057 [2022-01-11 06:11:15,640 INFO L226 Difference]: Without dead ends: 206399 [2022-01-11 06:11:15,750 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 06:11:15,751 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 1251 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:11:15,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1251 Valid, 1011 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:11:16,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206399 states. [2022-01-11 06:11:25,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206399 to 206397. [2022-01-11 06:11:25,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206397 states, 206396 states have (on average 1.5891247892401015) internal successors, (327989), 206396 states have internal predecessors, (327989), 0 states have call successors, (0), 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 06:11:26,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206397 states to 206397 states and 327989 transitions. [2022-01-11 06:11:26,611 INFO L78 Accepts]: Start accepts. Automaton has 206397 states and 327989 transitions. Word has length 139 [2022-01-11 06:11:26,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:11:26,611 INFO L470 AbstractCegarLoop]: Abstraction has 206397 states and 327989 transitions. [2022-01-11 06:11:26,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 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 06:11:26,612 INFO L276 IsEmpty]: Start isEmpty. Operand 206397 states and 327989 transitions. [2022-01-11 06:11:26,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-11 06:11:26,681 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:11:26,681 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] [2022-01-11 06:11:26,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 06:11:26,681 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:11:26,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:11:26,682 INFO L85 PathProgramCache]: Analyzing trace with hash -971586043, now seen corresponding path program 1 times [2022-01-11 06:11:26,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:11:26,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874390617] [2022-01-11 06:11:26,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:11:26,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:11:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:11:26,848 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 06:11:26,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:11:26,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874390617] [2022-01-11 06:11:26,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874390617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:11:26,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:11:26,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:11:26,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470249619] [2022-01-11 06:11:26,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:11:26,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:11:26,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:11:26,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:11:26,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:11:26,850 INFO L87 Difference]: Start difference. First operand 206397 states and 327989 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)