/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/verifythis/duplets.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 08:46:08,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 08:46:08,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 08:46:08,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 08:46:08,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 08:46:08,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 08:46:08,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 08:46:08,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 08:46:08,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 08:46:08,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 08:46:08,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 08:46:08,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 08:46:08,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 08:46:08,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 08:46:08,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 08:46:08,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 08:46:08,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 08:46:08,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 08:46:08,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 08:46:08,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 08:46:08,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 08:46:08,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 08:46:08,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 08:46:08,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 08:46:08,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 08:46:08,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 08:46:08,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 08:46:08,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 08:46:08,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 08:46:08,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 08:46:08,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 08:46:08,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 08:46:08,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 08:46:08,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 08:46:08,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 08:46:08,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 08:46:08,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 08:46:08,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 08:46:08,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 08:46:08,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 08:46:08,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 08:46:08,103 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 08:46:08,136 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 08:46:08,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 08:46:08,137 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 08:46:08,137 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 08:46:08,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 08:46:08,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 08:46:08,138 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 08:46:08,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 08:46:08,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 08:46:08,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 08:46:08,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 08:46:08,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 08:46:08,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 08:46:08,139 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 08:46:08,139 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 08:46:08,142 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 08:46:08,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 08:46:08,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 08:46:08,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 08:46:08,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 08:46:08,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 08:46:08,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:46:08,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 08:46:08,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 08:46:08,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 08:46:08,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 08:46:08,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 08:46:08,145 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 08:46:08,145 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 08:46:08,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 08:46:08,145 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 08:46:08,146 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 08:46:08,147 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 08:46:08,147 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 08:46:08,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 08:46:08,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 08:46:08,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 08:46:08,360 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 08:46:08,361 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 08:46:08,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/duplets.c [2022-01-10 08:46:08,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc60515ed/ad5c31aa0d1941cb9975d6def08cc711/FLAGc76947e56 [2022-01-10 08:46:08,752 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 08:46:08,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/duplets.c [2022-01-10 08:46:08,763 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc60515ed/ad5c31aa0d1941cb9975d6def08cc711/FLAGc76947e56 [2022-01-10 08:46:09,144 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc60515ed/ad5c31aa0d1941cb9975d6def08cc711 [2022-01-10 08:46:09,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 08:46:09,148 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 08:46:09,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 08:46:09,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 08:46:09,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 08:46:09,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:46:09" (1/1) ... [2022-01-10 08:46:09,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7599f29d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:46:09, skipping insertion in model container [2022-01-10 08:46:09,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:46:09" (1/1) ... [2022-01-10 08:46:09,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 08:46:09,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 08:46:09,298 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/duplets.c[485,498] [2022-01-10 08:46:09,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:46:09,329 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 08:46:09,337 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/duplets.c[485,498] [2022-01-10 08:46:09,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:46:09,358 INFO L208 MainTranslator]: Completed translation [2022-01-10 08:46:09,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:46:09 WrapperNode [2022-01-10 08:46:09,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 08:46:09,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 08:46:09,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 08:46:09,360 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 08:46:09,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:46:09" (1/1) ... [2022-01-10 08:46:09,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:46:09" (1/1) ... [2022-01-10 08:46:09,392 INFO L137 Inliner]: procedures = 23, calls = 43, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 150 [2022-01-10 08:46:09,392 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 08:46:09,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 08:46:09,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 08:46:09,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 08:46:09,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:46:09" (1/1) ... [2022-01-10 08:46:09,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:46:09" (1/1) ... [2022-01-10 08:46:09,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:46:09" (1/1) ... [2022-01-10 08:46:09,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:46:09" (1/1) ... [2022-01-10 08:46:09,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:46:09" (1/1) ... [2022-01-10 08:46:09,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:46:09" (1/1) ... [2022-01-10 08:46:09,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:46:09" (1/1) ... [2022-01-10 08:46:09,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 08:46:09,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 08:46:09,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 08:46:09,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 08:46:09,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:46:09" (1/1) ... [2022-01-10 08:46:09,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:46:09,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:46:09,455 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 08:46:09,457 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 08:46:09,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 08:46:09,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 08:46:09,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 08:46:09,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 08:46:09,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 08:46:09,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 08:46:09,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 08:46:09,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 08:46:09,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 08:46:09,542 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 08:46:09,543 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 08:46:09,737 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 08:46:09,743 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 08:46:09,743 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 08:46:09,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:46:09 BoogieIcfgContainer [2022-01-10 08:46:09,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 08:46:09,745 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 08:46:09,745 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 08:46:09,746 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 08:46:09,749 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:46:09" (1/1) ... [2022-01-10 08:46:09,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:46:09 BasicIcfg [2022-01-10 08:46:09,918 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 08:46:09,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 08:46:09,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 08:46:09,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 08:46:09,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:46:09" (1/4) ... [2022-01-10 08:46:09,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590040b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:46:09, skipping insertion in model container [2022-01-10 08:46:09,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:46:09" (2/4) ... [2022-01-10 08:46:09,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590040b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:46:09, skipping insertion in model container [2022-01-10 08:46:09,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:46:09" (3/4) ... [2022-01-10 08:46:09,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590040b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:46:09, skipping insertion in model container [2022-01-10 08:46:09,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:46:09" (4/4) ... [2022-01-10 08:46:09,925 INFO L111 eAbstractionObserver]: Analyzing ICFG duplets.cTransformedIcfg [2022-01-10 08:46:09,929 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 08:46:09,929 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 08:46:09,970 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 08:46:09,975 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 08:46:09,976 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 08:46:09,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 46 states have internal predecessors, (63), 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 08:46:09,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 08:46:09,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:46:09,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:46:09,990 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 08:46:09,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:46:09,994 INFO L85 PathProgramCache]: Analyzing trace with hash -876549677, now seen corresponding path program 1 times [2022-01-10 08:46:10,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:46:10,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833454338] [2022-01-10 08:46:10,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:46:10,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:46:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:46:10,208 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 08:46:10,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:46:10,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833454338] [2022-01-10 08:46:10,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833454338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:46:10,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:46:10,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:46:10,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483152681] [2022-01-10 08:46:10,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:46:10,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 08:46:10,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:46:10,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 08:46:10,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 08:46:10,248 INFO L87 Difference]: Start difference. First operand has 47 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 46 states have internal predecessors, (63), 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 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 08:46:10,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:46:10,264 INFO L93 Difference]: Finished difference Result 91 states and 122 transitions. [2022-01-10 08:46:10,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 08:46:10,266 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 18 [2022-01-10 08:46:10,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:46:10,271 INFO L225 Difference]: With dead ends: 91 [2022-01-10 08:46:10,271 INFO L226 Difference]: Without dead ends: 43 [2022-01-10 08:46:10,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 08:46:10,276 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:46:10,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:46:10,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-10 08:46:10,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-01-10 08:46:10,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.263157894736842) internal successors, (48), 42 states have internal predecessors, (48), 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 08:46:10,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2022-01-10 08:46:10,304 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 18 [2022-01-10 08:46:10,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:46:10,304 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2022-01-10 08:46:10,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 08:46:10,305 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2022-01-10 08:46:10,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 08:46:10,305 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:46:10,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:46:10,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 08:46:10,306 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 08:46:10,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:46:10,307 INFO L85 PathProgramCache]: Analyzing trace with hash 289219216, now seen corresponding path program 1 times [2022-01-10 08:46:10,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:46:10,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754818224] [2022-01-10 08:46:10,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:46:10,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:46:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:46:10,815 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 08:46:10,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:46:10,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754818224] [2022-01-10 08:46:10,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754818224] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:46:10,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:46:10,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:46:10,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675816402] [2022-01-10 08:46:10,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:46:10,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:46:10,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:46:10,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:46:10,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:46:10,820 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 08:46:10,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:46:10,947 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2022-01-10 08:46:10,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:46:10,948 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2022-01-10 08:46:10,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:46:10,949 INFO L225 Difference]: With dead ends: 82 [2022-01-10 08:46:10,949 INFO L226 Difference]: Without dead ends: 44 [2022-01-10 08:46:10,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:46:10,951 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 3 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:46:10,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 164 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:46:10,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-10 08:46:10,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-01-10 08:46:10,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 43 states have internal predecessors, (49), 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 08:46:10,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2022-01-10 08:46:10,964 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 18 [2022-01-10 08:46:10,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:46:10,966 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2022-01-10 08:46:10,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 08:46:10,967 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2022-01-10 08:46:10,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 08:46:10,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:46:10,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:46:10,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 08:46:10,969 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 08:46:10,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:46:10,969 INFO L85 PathProgramCache]: Analyzing trace with hash 252406775, now seen corresponding path program 1 times [2022-01-10 08:46:10,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:46:10,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77206839] [2022-01-10 08:46:10,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:46:10,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:46:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:46:11,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 08:46:11,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:46:11,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77206839] [2022-01-10 08:46:11,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77206839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:46:11,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:46:11,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 08:46:11,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972017788] [2022-01-10 08:46:11,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:46:11,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 08:46:11,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:46:11,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 08:46:11,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-01-10 08:46:11,345 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 08:46:11,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:46:11,503 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2022-01-10 08:46:11,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:46:11,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 19 [2022-01-10 08:46:11,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:46:11,505 INFO L225 Difference]: With dead ends: 98 [2022-01-10 08:46:11,505 INFO L226 Difference]: Without dead ends: 73 [2022-01-10 08:46:11,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 08:46:11,506 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 182 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:46:11,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 76 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:46:11,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-01-10 08:46:11,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 45. [2022-01-10 08:46:11,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.25) internal successors, (50), 44 states have internal predecessors, (50), 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 08:46:11,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2022-01-10 08:46:11,515 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 19 [2022-01-10 08:46:11,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:46:11,515 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2022-01-10 08:46:11,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 08:46:11,515 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2022-01-10 08:46:11,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 08:46:11,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:46:11,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:46:11,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 08:46:11,516 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 08:46:11,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:46:11,517 INFO L85 PathProgramCache]: Analyzing trace with hash -733869040, now seen corresponding path program 1 times [2022-01-10 08:46:11,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:46:11,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609392391] [2022-01-10 08:46:11,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:46:11,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:46:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:46:11,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 08:46:11,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:46:11,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609392391] [2022-01-10 08:46:11,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609392391] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:46:11,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:46:11,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:46:11,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385477429] [2022-01-10 08:46:11,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:46:11,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:46:11,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:46:11,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:46:11,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:46:11,628 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 08:46:11,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:46:11,674 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2022-01-10 08:46:11,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:46:11,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2022-01-10 08:46:11,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:46:11,676 INFO L225 Difference]: With dead ends: 69 [2022-01-10 08:46:11,676 INFO L226 Difference]: Without dead ends: 67 [2022-01-10 08:46:11,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:46:11,686 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 36 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:46:11,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 118 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:46:11,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-01-10 08:46:11,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 47. [2022-01-10 08:46:11,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 46 states have internal predecessors, (52), 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 08:46:11,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2022-01-10 08:46:11,700 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 20 [2022-01-10 08:46:11,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:46:11,700 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2022-01-10 08:46:11,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 08:46:11,701 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2022-01-10 08:46:11,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 08:46:11,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:46:11,702 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] [2022-01-10 08:46:11,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 08:46:11,702 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 08:46:11,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:46:11,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1795424626, now seen corresponding path program 1 times [2022-01-10 08:46:11,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:46:11,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323485458] [2022-01-10 08:46:11,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:46:11,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:46:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:46:12,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:46:12,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:46:12,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323485458] [2022-01-10 08:46:12,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323485458] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 08:46:12,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040579098] [2022-01-10 08:46:12,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:46:12,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:46:12,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:46:12,763 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 08:46:12,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 08:46:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:46:13,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-10 08:46:13,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:46:16,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 08:46:16,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:46:16,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040579098] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:46:16,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 08:46:16,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2022-01-10 08:46:16,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546365761] [2022-01-10 08:46:16,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:46:16,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 08:46:16,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:46:16,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 08:46:16,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2022-01-10 08:46:16,909 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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 08:46:17,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:46:17,767 INFO L93 Difference]: Finished difference Result 130 states and 145 transitions. [2022-01-10 08:46:17,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 08:46:17,768 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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 22 [2022-01-10 08:46:17,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:46:17,769 INFO L225 Difference]: With dead ends: 130 [2022-01-10 08:46:17,769 INFO L226 Difference]: Without dead ends: 98 [2022-01-10 08:46:17,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2022-01-10 08:46:17,770 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 609 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:46:17,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 119 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:46:17,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-01-10 08:46:17,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 48. [2022-01-10 08:46:17,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 47 states have internal predecessors, (53), 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 08:46:17,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2022-01-10 08:46:17,779 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 22 [2022-01-10 08:46:17,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:46:17,779 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2022-01-10 08:46:17,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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 08:46:17,780 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2022-01-10 08:46:17,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 08:46:17,780 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:46:17,780 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] [2022-01-10 08:46:17,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 08:46:17,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:46:17,986 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 08:46:17,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:46:17,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1889606059, now seen corresponding path program 1 times [2022-01-10 08:46:17,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:46:17,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579273112] [2022-01-10 08:46:17,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:46:17,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:46:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:46:18,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:46:18,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:46:18,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579273112] [2022-01-10 08:46:18,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579273112] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 08:46:18,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824007653] [2022-01-10 08:46:18,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:46:18,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:46:18,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:46:18,824 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 08:46:18,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 08:46:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:46:18,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-10 08:46:18,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:46:19,314 INFO L353 Elim1Store]: treesize reduction 18, result has 50.0 percent of original size [2022-01-10 08:46:19,315 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 63 [2022-01-10 08:46:19,325 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 35 [2022-01-10 08:46:19,383 INFO L353 Elim1Store]: treesize reduction 27, result has 50.0 percent of original size [2022-01-10 08:46:19,384 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 83 [2022-01-10 08:46:21,104 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 27 [2022-01-10 08:46:21,132 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 28 [2022-01-10 08:46:21,216 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2022-01-10 08:46:21,240 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-01-10 08:46:21,824 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-10 08:46:21,825 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 162 treesize of output 138 [2022-01-10 08:46:21,830 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 111 [2022-01-10 08:46:23,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 08:46:23,291 INFO L353 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2022-01-10 08:46:23,291 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 249 treesize of output 180 [2022-01-10 08:46:24,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 08:46:24,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:46:24,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824007653] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:46:24,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 08:46:24,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-01-10 08:46:24,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309461560] [2022-01-10 08:46:24,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:46:24,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 08:46:24,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:46:24,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 08:46:24,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-01-10 08:46:24,167 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 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 08:46:24,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:46:24,555 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2022-01-10 08:46:24,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 08:46:24,556 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 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 24 [2022-01-10 08:46:24,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:46:24,557 INFO L225 Difference]: With dead ends: 75 [2022-01-10 08:46:24,557 INFO L226 Difference]: Without dead ends: 73 [2022-01-10 08:46:24,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-01-10 08:46:24,559 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 36 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:46:24,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 208 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 75 Invalid, 0 Unknown, 31 Unchecked, 0.1s Time] [2022-01-10 08:46:24,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-01-10 08:46:24,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 55. [2022-01-10 08:46:24,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.24) internal successors, (62), 54 states have internal predecessors, (62), 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 08:46:24,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2022-01-10 08:46:24,569 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 24 [2022-01-10 08:46:24,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:46:24,569 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2022-01-10 08:46:24,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 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 08:46:24,569 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2022-01-10 08:46:24,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 08:46:24,570 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:46:24,570 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] [2022-01-10 08:46:24,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 08:46:24,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-10 08:46:24,793 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 08:46:24,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:46:24,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1889576268, now seen corresponding path program 1 times [2022-01-10 08:46:24,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:46:24,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266767963] [2022-01-10 08:46:24,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:46:24,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:46:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:46:25,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:46:25,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:46:25,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266767963] [2022-01-10 08:46:25,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266767963] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 08:46:25,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229415919] [2022-01-10 08:46:25,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:46:25,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:46:25,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:46:25,296 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 08:46:25,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 08:46:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:46:25,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-10 08:46:25,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:46:25,441 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-10 08:46:25,516 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-01-10 08:46:25,520 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-01-10 08:46:25,577 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-01-10 08:46:25,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 08:46:25,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:46:25,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229415919] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:46:25,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 08:46:25,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-01-10 08:46:25,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330517309] [2022-01-10 08:46:25,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:46:25,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:46:25,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:46:25,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:46:25,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-01-10 08:46:25,606 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 08:46:25,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:46:25,709 INFO L93 Difference]: Finished difference Result 99 states and 109 transitions. [2022-01-10 08:46:25,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:46:25,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 24 [2022-01-10 08:46:25,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:46:25,710 INFO L225 Difference]: With dead ends: 99 [2022-01-10 08:46:25,710 INFO L226 Difference]: Without dead ends: 81 [2022-01-10 08:46:25,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-01-10 08:46:25,711 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 44 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:46:25,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 143 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:46:25,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-01-10 08:46:25,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 62. [2022-01-10 08:46:25,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.2280701754385965) internal successors, (70), 61 states have internal predecessors, (70), 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 08:46:25,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2022-01-10 08:46:25,722 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 24 [2022-01-10 08:46:25,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:46:25,733 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2022-01-10 08:46:25,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 08:46:25,734 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2022-01-10 08:46:25,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-10 08:46:25,734 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:46:25,734 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] [2022-01-10 08:46:25,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 08:46:25,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:46:25,948 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 08:46:25,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:46:25,949 INFO L85 PathProgramCache]: Analyzing trace with hash -550630067, now seen corresponding path program 1 times [2022-01-10 08:46:25,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:46:25,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177748725] [2022-01-10 08:46:25,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:46:25,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:46:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:46:26,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 08:46:26,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:46:26,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177748725] [2022-01-10 08:46:26,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177748725] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 08:46:26,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673664453] [2022-01-10 08:46:26,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:46:26,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:46:26,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:46:26,120 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 08:46:26,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 08:46:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:46:26,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:46:26,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:46:26,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 08:46:26,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 08:46:26,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 08:46:26,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673664453] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 08:46:26,558 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 08:46:26,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2022-01-10 08:46:26,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552853961] [2022-01-10 08:46:26,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 08:46:26,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 08:46:26,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:46:26,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 08:46:26,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-01-10 08:46:26,560 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 08:46:26,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:46:26,888 INFO L93 Difference]: Finished difference Result 193 states and 209 transitions. [2022-01-10 08:46:26,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 08:46:26,888 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 25 [2022-01-10 08:46:26,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:46:26,889 INFO L225 Difference]: With dead ends: 193 [2022-01-10 08:46:26,889 INFO L226 Difference]: Without dead ends: 168 [2022-01-10 08:46:26,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2022-01-10 08:46:26,890 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 381 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:46:26,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 378 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:46:26,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-01-10 08:46:26,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 65. [2022-01-10 08:46:26,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 64 states have internal predecessors, (74), 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 08:46:26,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2022-01-10 08:46:26,913 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 25 [2022-01-10 08:46:26,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:46:26,913 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2022-01-10 08:46:26,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 08:46:26,913 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2022-01-10 08:46:26,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 08:46:26,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:46:26,914 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 08:46:26,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 08:46:27,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:46:27,135 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 08:46:27,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:46:27,136 INFO L85 PathProgramCache]: Analyzing trace with hash 357056852, now seen corresponding path program 1 times [2022-01-10 08:46:27,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:46:27,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994655880] [2022-01-10 08:46:27,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:46:27,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:46:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:46:27,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 08:46:27,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:46:27,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994655880] [2022-01-10 08:46:27,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994655880] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 08:46:27,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586025515] [2022-01-10 08:46:27,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:46:27,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:46:27,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:46:27,960 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 08:46:27,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 08:46:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:46:28,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 45 conjunts are in the unsatisfiable core [2022-01-10 08:46:28,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:46:28,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 08:46:28,448 INFO L353 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-01-10 08:46:28,448 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-01-10 08:46:29,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 08:46:29,766 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 08:46:29,766 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 134 [2022-01-10 08:46:30,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 08:46:30,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 08:46:30,235 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 184 [2022-01-10 08:46:32,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 08:46:32,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586025515] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 08:46:32,081 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 08:46:32,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 25 [2022-01-10 08:46:32,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687493716] [2022-01-10 08:46:32,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 08:46:32,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-10 08:46:32,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:46:32,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-10 08:46:32,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2022-01-10 08:46:32,082 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 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 08:46:34,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:46:34,816 INFO L93 Difference]: Finished difference Result 194 states and 219 transitions. [2022-01-10 08:46:34,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-10 08:46:34,819 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 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 27 [2022-01-10 08:46:34,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:46:34,820 INFO L225 Difference]: With dead ends: 194 [2022-01-10 08:46:34,820 INFO L226 Difference]: Without dead ends: 135 [2022-01-10 08:46:34,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=347, Invalid=1723, Unknown=0, NotChecked=0, Total=2070 [2022-01-10 08:46:34,822 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 275 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 08:46:34,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 641 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 501 Invalid, 0 Unknown, 45 Unchecked, 0.7s Time] [2022-01-10 08:46:34,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-01-10 08:46:34,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 71. [2022-01-10 08:46:34,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 70 states have internal predecessors, (83), 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 08:46:34,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2022-01-10 08:46:34,840 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 27 [2022-01-10 08:46:34,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:46:34,841 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2022-01-10 08:46:34,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 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 08:46:34,841 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2022-01-10 08:46:34,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-10 08:46:34,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:46:34,842 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 08:46:34,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-10 08:46:35,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:46:35,065 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 08:46:35,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:46:35,065 INFO L85 PathProgramCache]: Analyzing trace with hash 328846529, now seen corresponding path program 1 times [2022-01-10 08:46:35,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:46:35,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645399384] [2022-01-10 08:46:35,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:46:35,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:46:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:46:35,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 08:46:35,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:46:35,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645399384] [2022-01-10 08:46:35,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645399384] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:46:35,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:46:35,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-10 08:46:35,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553566385] [2022-01-10 08:46:35,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:46:35,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 08:46:35,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:46:35,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 08:46:35,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-01-10 08:46:35,492 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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 08:46:36,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:46:36,157 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2022-01-10 08:46:36,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 08:46:36,157 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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 29 [2022-01-10 08:46:36,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:46:36,158 INFO L225 Difference]: With dead ends: 119 [2022-01-10 08:46:36,158 INFO L226 Difference]: Without dead ends: 107 [2022-01-10 08:46:36,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-01-10 08:46:36,159 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 324 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:46:36,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 193 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:46:36,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-01-10 08:46:36,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 82. [2022-01-10 08:46:36,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 77 states have (on average 1.2337662337662338) internal successors, (95), 81 states have internal predecessors, (95), 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 08:46:36,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 95 transitions. [2022-01-10 08:46:36,181 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 95 transitions. Word has length 29 [2022-01-10 08:46:36,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:46:36,181 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 95 transitions. [2022-01-10 08:46:36,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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 08:46:36,182 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 95 transitions. [2022-01-10 08:46:36,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-10 08:46:36,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:46:36,182 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 08:46:36,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 08:46:36,183 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 08:46:36,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:46:36,183 INFO L85 PathProgramCache]: Analyzing trace with hash 909888031, now seen corresponding path program 2 times [2022-01-10 08:46:36,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:46:36,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75584984] [2022-01-10 08:46:36,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:46:36,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:46:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat