/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_LAZY.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 16:57:45,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 16:57:45,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 16:57:46,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 16:57:46,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 16:57:46,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 16:57:46,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 16:57:46,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 16:57:46,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 16:57:46,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 16:57:46,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 16:57:46,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 16:57:46,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 16:57:46,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 16:57:46,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 16:57:46,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 16:57:46,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 16:57:46,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 16:57:46,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 16:57:46,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 16:57:46,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 16:57:46,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 16:57:46,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 16:57:46,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 16:57:46,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 16:57:46,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 16:57:46,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 16:57:46,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 16:57:46,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 16:57:46,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 16:57:46,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 16:57:46,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 16:57:46,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 16:57:46,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 16:57:46,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 16:57:46,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 16:57:46,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 16:57:46,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 16:57:46,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 16:57:46,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 16:57:46,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 16:57:46,118 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 16:57:46,150 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 16:57:46,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 16:57:46,151 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 16:57:46,151 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 16:57:46,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 16:57:46,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 16:57:46,153 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 16:57:46,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 16:57:46,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 16:57:46,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 16:57:46,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 16:57:46,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 16:57:46,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 16:57:46,154 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 16:57:46,155 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 16:57:46,155 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 16:57:46,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 16:57:46,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 16:57:46,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 16:57:46,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 16:57:46,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 16:57:46,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 16:57:46,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 16:57:46,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 16:57:46,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 16:57:46,158 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 16:57:46,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 16:57:46,158 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 16:57:46,158 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 16:57:46,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 16:57:46,158 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 16:57:46,159 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 16:57:46,159 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 16:57:46,160 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 16:57:46,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 16:57:46,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 16:57:46,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 16:57:46,440 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 16:57:46,440 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 16:57:46,441 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label46.c [2022-01-10 16:57:46,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce00d35ee/abc4af816a084112807d4fcc33845eaf/FLAGd07bc881e [2022-01-10 16:57:46,957 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 16:57:46,958 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label46.c [2022-01-10 16:57:46,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce00d35ee/abc4af816a084112807d4fcc33845eaf/FLAGd07bc881e [2022-01-10 16:57:46,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce00d35ee/abc4af816a084112807d4fcc33845eaf [2022-01-10 16:57:47,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 16:57:47,002 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 16:57:47,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 16:57:47,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 16:57:47,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 16:57:47,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:57:46" (1/1) ... [2022-01-10 16:57:47,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@530fca3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:57:47, skipping insertion in model container [2022-01-10 16:57:47,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:57:46" (1/1) ... [2022-01-10 16:57:47,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 16:57:47,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 16:57:47,253 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label46.c[4146,4159] [2022-01-10 16:57:47,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 16:57:47,432 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 16:57:47,455 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label46.c[4146,4159] [2022-01-10 16:57:47,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 16:57:47,574 INFO L208 MainTranslator]: Completed translation [2022-01-10 16:57:47,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:57:47 WrapperNode [2022-01-10 16:57:47,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 16:57:47,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 16:57:47,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 16:57:47,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 16:57:47,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:57:47" (1/1) ... [2022-01-10 16:57:47,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:57:47" (1/1) ... [2022-01-10 16:57:47,660 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 856 [2022-01-10 16:57:47,660 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 16:57:47,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 16:57:47,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 16:57:47,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 16:57:47,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:57:47" (1/1) ... [2022-01-10 16:57:47,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:57:47" (1/1) ... [2022-01-10 16:57:47,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:57:47" (1/1) ... [2022-01-10 16:57:47,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:57:47" (1/1) ... [2022-01-10 16:57:47,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:57:47" (1/1) ... [2022-01-10 16:57:47,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:57:47" (1/1) ... [2022-01-10 16:57:47,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:57:47" (1/1) ... [2022-01-10 16:57:47,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 16:57:47,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 16:57:47,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 16:57:47,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 16:57:47,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:57:47" (1/1) ... [2022-01-10 16:57:47,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 16:57:47,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 16:57:47,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 16:57:47,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 16:57:47,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 16:57:47,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 16:57:47,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 16:57:47,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 16:57:47,902 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 16:57:47,903 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 16:57:50,316 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 16:57:50,324 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 16:57:50,325 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 16:57:50,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:57:50 BoogieIcfgContainer [2022-01-10 16:57:50,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 16:57:50,327 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 16:57:50,327 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 16:57:50,328 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 16:57:50,331 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:57:50" (1/1) ... [2022-01-10 16:57:50,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 04:57:50 BasicIcfg [2022-01-10 16:57:50,671 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 16:57:50,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 16:57:50,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 16:57:50,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 16:57:50,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:57:46" (1/4) ... [2022-01-10 16:57:50,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1165b281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:57:50, skipping insertion in model container [2022-01-10 16:57:50,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:57:47" (2/4) ... [2022-01-10 16:57:50,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1165b281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:57:50, skipping insertion in model container [2022-01-10 16:57:50,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:57:50" (3/4) ... [2022-01-10 16:57:50,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1165b281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 04:57:50, skipping insertion in model container [2022-01-10 16:57:50,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 04:57:50" (4/4) ... [2022-01-10 16:57:50,677 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label46.cTransformedIcfg [2022-01-10 16:57:50,681 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 16:57:50,681 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 16:57:50,735 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 16:57:50,742 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 16:57:50,742 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 16:57:50,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 16:57:50,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 16:57:50,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 16:57:50,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 16:57:50,768 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 16:57:50,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 16:57:50,772 INFO L85 PathProgramCache]: Analyzing trace with hash 775709554, now seen corresponding path program 1 times [2022-01-10 16:57:50,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 16:57:50,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154304883] [2022-01-10 16:57:50,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 16:57:50,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 16:57:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 16:57:51,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 16:57:51,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 16:57:51,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154304883] [2022-01-10 16:57:51,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154304883] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 16:57:51,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 16:57:51,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 16:57:51,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462277847] [2022-01-10 16:57:51,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 16:57:51,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 16:57:51,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 16:57:51,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 16:57:51,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 16:57:51,197 INFO L87 Difference]: Start difference. First operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 16:57:53,467 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:57:55,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:57:57,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:00,027 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:02,190 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:04,359 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:06,504 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:08,678 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:10,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:13,005 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:15,140 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:17,282 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:19,467 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:21,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:23,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:25,835 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:28,003 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:30,146 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:32,285 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:34,412 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:36,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:38,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:40,893 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:43,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:45,150 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:47,288 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:49,414 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:51,544 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:53,646 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:55,783 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:58:57,920 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:59:00,053 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:59:02,201 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:59:04,455 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 16:59:04,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 16:59:04,649 INFO L93 Difference]: Finished difference Result 669 states and 1200 transitions. [2022-01-10 16:59:04,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 16:59:04,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-01-10 16:59:04,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 16:59:04,661 INFO L225 Difference]: With dead ends: 669 [2022-01-10 16:59:04,661 INFO L226 Difference]: Without dead ends: 360 [2022-01-10 16:59:04,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 16:59:04,666 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 171 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 187 mSolverCounterUnsat, 34 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 34 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.3s IncrementalHoareTripleChecker+Time [2022-01-10 16:59:04,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 94 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 475 Invalid, 34 Unknown, 0 Unchecked, 73.3s Time] [2022-01-10 16:59:04,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-01-10 16:59:04,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2022-01-10 16:59:04,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.5208913649025069) internal successors, (546), 359 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 16:59:04,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 546 transitions. [2022-01-10 16:59:04,712 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 546 transitions. Word has length 39 [2022-01-10 16:59:04,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 16:59:04,713 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 546 transitions. [2022-01-10 16:59:04,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 16:59:04,713 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 546 transitions. [2022-01-10 16:59:04,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 16:59:04,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 16:59:04,716 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 16:59:04,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 16:59:04,717 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 16:59:04,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 16:59:04,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1603764123, now seen corresponding path program 1 times [2022-01-10 16:59:04,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 16:59:04,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971767452] [2022-01-10 16:59:04,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 16:59:04,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 16:59:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 16:59:04,902 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 16:59:04,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 16:59:04,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971767452] [2022-01-10 16:59:04,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971767452] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 16:59:04,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 16:59:04,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 16:59:04,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857935358] [2022-01-10 16:59:04,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 16:59:04,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 16:59:04,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 16:59:04,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 16:59:04,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 16:59:04,913 INFO L87 Difference]: Start difference. First operand 360 states and 546 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)