/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/array-crafted/mapavg5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 03:10:03,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 03:10:03,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 03:10:03,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 03:10:03,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 03:10:03,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 03:10:03,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 03:10:03,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 03:10:03,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 03:10:03,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 03:10:03,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 03:10:03,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 03:10:03,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 03:10:03,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 03:10:03,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 03:10:03,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 03:10:03,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 03:10:03,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 03:10:03,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 03:10:03,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 03:10:03,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 03:10:03,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 03:10:03,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 03:10:03,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 03:10:03,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 03:10:03,161 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 03:10:03,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 03:10:03,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 03:10:03,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 03:10:03,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 03:10:03,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 03:10:03,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 03:10:03,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 03:10:03,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 03:10:03,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 03:10:03,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 03:10:03,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 03:10:03,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 03:10:03,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 03:10:03,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 03:10:03,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 03:10:03,168 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 03:10:03,217 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 03:10:03,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 03:10:03,218 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 03:10:03,218 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 03:10:03,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 03:10:03,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 03:10:03,219 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 03:10:03,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 03:10:03,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 03:10:03,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 03:10:03,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 03:10:03,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 03:10:03,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 03:10:03,221 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 03:10:03,221 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 03:10:03,221 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 03:10:03,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 03:10:03,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 03:10:03,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 03:10:03,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 03:10:03,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 03:10:03,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 03:10:03,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 03:10:03,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 03:10:03,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 03:10:03,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 03:10:03,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 03:10:03,223 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 03:10:03,223 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 03:10:03,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 03:10:03,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 03:10:03,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 03:10:03,224 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 03:10:03,224 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 03:10:03,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 03:10:03,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 03:10:03,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 03:10:03,449 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 03:10:03,451 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 03:10:03,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapavg5.i [2022-01-11 03:10:03,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e42dc8ae6/e29fc3d04bb34815b980e48f88d75f55/FLAG41a1bdd9b [2022-01-11 03:10:03,930 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 03:10:03,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapavg5.i [2022-01-11 03:10:03,938 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e42dc8ae6/e29fc3d04bb34815b980e48f88d75f55/FLAG41a1bdd9b [2022-01-11 03:10:03,948 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e42dc8ae6/e29fc3d04bb34815b980e48f88d75f55 [2022-01-11 03:10:03,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 03:10:03,951 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 03:10:03,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 03:10:03,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 03:10:03,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 03:10:03,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:10:03" (1/1) ... [2022-01-11 03:10:03,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56e70df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:10:03, skipping insertion in model container [2022-01-11 03:10:03,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:10:03" (1/1) ... [2022-01-11 03:10:03,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 03:10:03,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 03:10:04,125 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapavg5.i[1383,1396] [2022-01-11 03:10:04,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 03:10:04,134 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 03:10:04,162 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapavg5.i[1383,1396] [2022-01-11 03:10:04,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 03:10:04,171 INFO L208 MainTranslator]: Completed translation [2022-01-11 03:10:04,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:10:04 WrapperNode [2022-01-11 03:10:04,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 03:10:04,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 03:10:04,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 03:10:04,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 03:10:04,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:10:04" (1/1) ... [2022-01-11 03:10:04,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:10:04" (1/1) ... [2022-01-11 03:10:04,211 INFO L137 Inliner]: procedures = 18, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 116 [2022-01-11 03:10:04,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 03:10:04,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 03:10:04,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 03:10:04,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 03:10:04,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:10:04" (1/1) ... [2022-01-11 03:10:04,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:10:04" (1/1) ... [2022-01-11 03:10:04,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:10:04" (1/1) ... [2022-01-11 03:10:04,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:10:04" (1/1) ... [2022-01-11 03:10:04,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:10:04" (1/1) ... [2022-01-11 03:10:04,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:10:04" (1/1) ... [2022-01-11 03:10:04,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:10:04" (1/1) ... [2022-01-11 03:10:04,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 03:10:04,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 03:10:04,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 03:10:04,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 03:10:04,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:10:04" (1/1) ... [2022-01-11 03:10:04,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 03:10:04,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:10:04,283 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 03:10:04,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 03:10:04,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 03:10:04,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 03:10:04,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-11 03:10:04,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-11 03:10:04,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 03:10:04,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 03:10:04,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-11 03:10:04,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-11 03:10:04,390 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 03:10:04,390 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 03:10:04,920 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 03:10:04,924 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 03:10:04,924 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-11 03:10:04,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:10:04 BoogieIcfgContainer [2022-01-11 03:10:04,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 03:10:04,926 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 03:10:04,926 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 03:10:04,933 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 03:10:04,935 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:10:04" (1/1) ... [2022-01-11 03:10:05,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:10:05 BasicIcfg [2022-01-11 03:10:05,044 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 03:10:05,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 03:10:05,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 03:10:05,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 03:10:05,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 03:10:03" (1/4) ... [2022-01-11 03:10:05,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39d2c3c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:10:05, skipping insertion in model container [2022-01-11 03:10:05,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:10:04" (2/4) ... [2022-01-11 03:10:05,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39d2c3c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:10:05, skipping insertion in model container [2022-01-11 03:10:05,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:10:04" (3/4) ... [2022-01-11 03:10:05,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39d2c3c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 03:10:05, skipping insertion in model container [2022-01-11 03:10:05,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:10:05" (4/4) ... [2022-01-11 03:10:05,049 INFO L111 eAbstractionObserver]: Analyzing ICFG mapavg5.iTransformedIcfg [2022-01-11 03:10:05,052 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 03:10:05,052 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 03:10:05,087 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 03:10:05,104 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 03:10:05,104 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 03:10:05,127 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:10:05,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-11 03:10:05,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:10:05,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:10:05,131 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:10:05,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:10:05,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1312048596, now seen corresponding path program 1 times [2022-01-11 03:10:05,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:10:05,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658440393] [2022-01-11 03:10:05,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:10:05,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:10:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:10:05,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:10:05,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:10:05,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658440393] [2022-01-11 03:10:05,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658440393] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:10:05,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:10:05,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:10:05,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201098466] [2022-01-11 03:10:05,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:10:05,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 03:10:05,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:10:05,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 03:10:05,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 03:10:05,325 INFO L87 Difference]: Start difference. First operand has 29 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 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) [2022-01-11 03:10:05,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:10:05,336 INFO L93 Difference]: Finished difference Result 53 states and 72 transitions. [2022-01-11 03:10:05,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 03:10:05,337 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 [2022-01-11 03:10:05,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:10:05,341 INFO L225 Difference]: With dead ends: 53 [2022-01-11 03:10:05,341 INFO L226 Difference]: Without dead ends: 24 [2022-01-11 03:10:05,343 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 [2022-01-11 03:10:05,346 INFO L933 BasicCegarLoop]: 34 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, 34 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 [2022-01-11 03:10:05,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 03:10:05,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-11 03:10:05,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-01-11 03:10:05,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 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) [2022-01-11 03:10:05,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-01-11 03:10:05,368 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2022-01-11 03:10:05,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:10:05,368 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-01-11 03:10:05,369 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) [2022-01-11 03:10:05,370 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-01-11 03:10:05,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-11 03:10:05,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:10:05,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:10:05,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 03:10:05,371 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:10:05,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:10:05,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1077779722, now seen corresponding path program 1 times [2022-01-11 03:10:05,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:10:05,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330999447] [2022-01-11 03:10:05,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:10:05,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:10:05,421 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:10:05,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5597308] [2022-01-11 03:10:05,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:10:05,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:10:05,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:10:05,436 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) [2022-01-11 03:10:05,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 03:10:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:10:05,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-11 03:10:05,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:10:05,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:10:05,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 03:10:05,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:10:05,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330999447] [2022-01-11 03:10:05,653 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:10:05,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5597308] [2022-01-11 03:10:05,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5597308] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:10:05,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:10:05,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 03:10:05,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141722722] [2022-01-11 03:10:05,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:10:05,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:10:05,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:10:05,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:10:05,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:10:05,656 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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) [2022-01-11 03:10:06,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:10:06,471 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2022-01-11 03:10:06,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:10:06,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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 [2022-01-11 03:10:06,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:10:06,473 INFO L225 Difference]: With dead ends: 46 [2022-01-11 03:10:06,474 INFO L226 Difference]: Without dead ends: 30 [2022-01-11 03:10:06,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:10:06,475 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 03:10:06,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 17 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 03:10:06,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-11 03:10:06,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2022-01-11 03:10:06,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:10:06,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-01-11 03:10:06,480 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 18 [2022-01-11 03:10:06,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:10:06,480 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-01-11 03:10:06,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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) [2022-01-11 03:10:06,480 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-01-11 03:10:06,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-11 03:10:06,481 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:10:06,481 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] [2022-01-11 03:10:06,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 03:10:06,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:10:06,700 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:10:06,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:10:06,700 INFO L85 PathProgramCache]: Analyzing trace with hash 571589203, now seen corresponding path program 1 times [2022-01-11 03:10:06,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:10:06,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601399148] [2022-01-11 03:10:06,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:10:06,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:10:06,770 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:10:06,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [777945629] [2022-01-11 03:10:06,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:10:06,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:10:06,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:10:06,772 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) [2022-01-11 03:10:06,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 03:10:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:10:06,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-11 03:10:06,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:10:07,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 03:10:07,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 03:10:07,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:10:07,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601399148] [2022-01-11 03:10:07,087 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:10:07,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777945629] [2022-01-11 03:10:07,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777945629] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:10:07,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:10:07,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 03:10:07,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864253601] [2022-01-11 03:10:07,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:10:07,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 03:10:07,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:10:07,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 03:10:07,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-11 03:10:07,089 INFO L87 Difference]: Start difference. First operand 27 states and 31 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) [2022-01-11 03:10:07,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:10:07,251 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2022-01-11 03:10:07,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 03:10:07,253 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 [2022-01-11 03:10:07,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:10:07,253 INFO L225 Difference]: With dead ends: 51 [2022-01-11 03:10:07,253 INFO L226 Difference]: Without dead ends: 29 [2022-01-11 03:10:07,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-11 03:10:07,254 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 03:10:07,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 58 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 03:10:07,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-11 03:10:07,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-01-11 03:10:07,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:10:07,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-01-11 03:10:07,258 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 24 [2022-01-11 03:10:07,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:10:07,258 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-01-11 03:10:07,259 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) [2022-01-11 03:10:07,259 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-01-11 03:10:07,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-11 03:10:07,259 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:10:07,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:10:07,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 03:10:07,463 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,SelfDestructingSolverStorable2 [2022-01-11 03:10:07,464 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:10:07,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:10:07,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1011526224, now seen corresponding path program 1 times [2022-01-11 03:10:07,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:10:07,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613045664] [2022-01-11 03:10:07,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:10:07,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:10:07,511 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:10:07,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908885596] [2022-01-11 03:10:07,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:10:07,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:10:07,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:10:07,514 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) [2022-01-11 03:10:07,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 03:10:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:10:07,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-11 03:10:07,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:10:07,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 03:10:07,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 03:10:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 03:10:08,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:10:08,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613045664] [2022-01-11 03:10:08,156 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:10:08,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908885596] [2022-01-11 03:10:08,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908885596] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 03:10:08,156 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 03:10:08,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-11 03:10:08,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004365742] [2022-01-11 03:10:08,157 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 03:10:08,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 03:10:08,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:10:08,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 03:10:08,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-11 03:10:08,158 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:10:09,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:10:09,087 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2022-01-11 03:10:09,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 03:10:09,089 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 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 26 [2022-01-11 03:10:09,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:10:09,089 INFO L225 Difference]: With dead ends: 53 [2022-01-11 03:10:09,089 INFO L226 Difference]: Without dead ends: 31 [2022-01-11 03:10:09,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-11 03:10:09,090 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 2 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-11 03:10:09,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 56 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-11 03:10:09,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-11 03:10:09,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-01-11 03:10:09,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:10:09,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-01-11 03:10:09,094 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 26 [2022-01-11 03:10:09,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:10:09,094 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-01-11 03:10:09,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:10:09,094 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-01-11 03:10:09,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-11 03:10:09,095 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:10:09,095 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:10:09,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-11 03:10:09,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:10:09,299 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:10:09,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:10:09,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1967028787, now seen corresponding path program 2 times [2022-01-11 03:10:09,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:10:09,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910877702] [2022-01-11 03:10:09,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:10:09,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:10:09,324 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:10:09,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1359525291] [2022-01-11 03:10:09,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 03:10:09,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:10:09,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:10:09,325 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) [2022-01-11 03:10:09,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-11 03:10:09,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-11 03:10:09,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 03:10:09,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-11 03:10:09,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:10:09,703 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-11 03:10:09,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 03:10:09,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:10:09,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910877702] [2022-01-11 03:10:09,703 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:10:09,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359525291] [2022-01-11 03:10:09,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359525291] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:10:09,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:10:09,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 03:10:09,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157641057] [2022-01-11 03:10:09,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:10:09,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:10:09,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:10:09,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:10:09,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:10:09,704 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:10:10,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:10:10,109 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2022-01-11 03:10:10,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:10:10,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 28 [2022-01-11 03:10:10,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:10:10,112 INFO L225 Difference]: With dead ends: 41 [2022-01-11 03:10:10,112 INFO L226 Difference]: Without dead ends: 32 [2022-01-11 03:10:10,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:10:10,113 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 13 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 03:10:10,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 22 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 03:10:10,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-11 03:10:10,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2022-01-11 03:10:10,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:10:10,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2022-01-11 03:10:10,117 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 28 [2022-01-11 03:10:10,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:10:10,117 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-01-11 03:10:10,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:10:10,117 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-01-11 03:10:10,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-11 03:10:10,118 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:10:10,118 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:10:10,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-11 03:10:10,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:10:10,323 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:10:10,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:10:10,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1222303413, now seen corresponding path program 1 times [2022-01-11 03:10:10,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:10:10,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379242753] [2022-01-11 03:10:10,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:10:10,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:10:10,345 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:10:10,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [715174502] [2022-01-11 03:10:10,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:10:10,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:10:10,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:10:10,346 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) [2022-01-11 03:10:10,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-11 03:10:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:10:10,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-11 03:10:10,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:10:10,812 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 03:10:10,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 03:10:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 03:10:11,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:10:11,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379242753] [2022-01-11 03:10:11,022 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:10:11,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715174502] [2022-01-11 03:10:11,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715174502] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 03:10:11,022 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 03:10:11,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-01-11 03:10:11,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466007534] [2022-01-11 03:10:11,023 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 03:10:11,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-11 03:10:11,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:10:11,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-11 03:10:11,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-11 03:10:11,024 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:10:13,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 03:10:18,030 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 03:10:18,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:10:18,080 INFO L93 Difference]: Finished difference Result 89 states and 106 transitions. [2022-01-11 03:10:18,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-11 03:10:18,081 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 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 30 [2022-01-11 03:10:18,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:10:18,081 INFO L225 Difference]: With dead ends: 89 [2022-01-11 03:10:18,081 INFO L226 Difference]: Without dead ends: 70 [2022-01-11 03:10:18,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2022-01-11 03:10:18,082 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 131 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 73 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-01-11 03:10:18,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 49 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 171 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-01-11 03:10:18,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-01-11 03:10:18,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 37. [2022-01-11 03:10:18,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:10:18,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2022-01-11 03:10:18,100 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 30 [2022-01-11 03:10:18,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:10:18,101 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2022-01-11 03:10:18,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:10:18,101 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2022-01-11 03:10:18,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-11 03:10:18,101 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:10:18,101 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:10:18,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-11 03:10:18,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:10:18,325 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:10:18,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:10:18,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1240875176, now seen corresponding path program 2 times [2022-01-11 03:10:18,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:10:18,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965725051] [2022-01-11 03:10:18,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:10:18,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:10:18,362 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:10:18,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [264813005] [2022-01-11 03:10:18,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 03:10:18,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:10:18,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:10:18,363 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:10:18,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process