/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/bitvector/jain_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 01:53:35,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 01:53:35,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 01:53:35,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 01:53:35,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 01:53:35,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 01:53:35,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 01:53:35,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 01:53:35,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 01:53:35,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 01:53:35,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 01:53:35,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 01:53:35,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 01:53:35,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 01:53:35,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 01:53:35,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 01:53:35,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 01:53:35,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 01:53:35,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 01:53:35,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 01:53:35,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 01:53:35,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 01:53:35,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 01:53:35,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 01:53:35,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 01:53:35,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 01:53:35,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 01:53:35,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 01:53:35,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 01:53:35,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 01:53:35,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 01:53:35,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 01:53:35,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 01:53:35,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 01:53:35,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 01:53:35,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 01:53:35,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 01:53:35,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 01:53:35,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 01:53:35,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 01:53:35,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 01:53:35,372 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 01:53:35,391 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 01:53:35,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 01:53:35,392 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 01:53:35,392 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 01:53:35,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 01:53:35,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 01:53:35,393 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 01:53:35,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 01:53:35,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 01:53:35,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 01:53:35,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 01:53:35,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 01:53:35,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 01:53:35,394 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 01:53:35,394 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 01:53:35,394 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 01:53:35,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 01:53:35,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 01:53:35,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 01:53:35,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 01:53:35,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 01:53:35,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:53:35,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 01:53:35,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 01:53:35,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 01:53:35,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 01:53:35,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 01:53:35,395 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 01:53:35,395 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 01:53:35,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 01:53:35,395 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 01:53:35,395 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 01:53:35,396 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 01:53:35,396 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 01:53:35,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 01:53:35,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 01:53:35,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 01:53:35,594 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 01:53:35,594 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 01:53:35,595 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/jain_1-1.c [2022-01-11 01:53:35,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/938a57763/ed6fb910a7d0494fbbe3f344b346cdbf/FLAG62f1ff063 [2022-01-11 01:53:35,960 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 01:53:35,961 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/jain_1-1.c [2022-01-11 01:53:35,964 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/938a57763/ed6fb910a7d0494fbbe3f344b346cdbf/FLAG62f1ff063 [2022-01-11 01:53:36,399 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/938a57763/ed6fb910a7d0494fbbe3f344b346cdbf [2022-01-11 01:53:36,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 01:53:36,405 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 01:53:36,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 01:53:36,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 01:53:36,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 01:53:36,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:53:36" (1/1) ... [2022-01-11 01:53:36,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f0ad937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:53:36, skipping insertion in model container [2022-01-11 01:53:36,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:53:36" (1/1) ... [2022-01-11 01:53:36,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 01:53:36,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 01:53:36,549 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/jain_1-1.c[675,688] [2022-01-11 01:53:36,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:53:36,585 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 01:53:36,595 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/jain_1-1.c[675,688] [2022-01-11 01:53:36,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:53:36,608 INFO L208 MainTranslator]: Completed translation [2022-01-11 01:53:36,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:53:36 WrapperNode [2022-01-11 01:53:36,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 01:53:36,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 01:53:36,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 01:53:36,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 01:53:36,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:53:36" (1/1) ... [2022-01-11 01:53:36,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:53:36" (1/1) ... [2022-01-11 01:53:36,630 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2022-01-11 01:53:36,631 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 01:53:36,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 01:53:36,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 01:53:36,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 01:53:36,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:53:36" (1/1) ... [2022-01-11 01:53:36,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:53:36" (1/1) ... [2022-01-11 01:53:36,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:53:36" (1/1) ... [2022-01-11 01:53:36,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:53:36" (1/1) ... [2022-01-11 01:53:36,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:53:36" (1/1) ... [2022-01-11 01:53:36,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:53:36" (1/1) ... [2022-01-11 01:53:36,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:53:36" (1/1) ... [2022-01-11 01:53:36,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 01:53:36,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 01:53:36,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 01:53:36,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 01:53:36,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:53:36" (1/1) ... [2022-01-11 01:53:36,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:53:36,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:53:36,681 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 01:53:36,698 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 01:53:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 01:53:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 01:53:36,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 01:53:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 01:53:36,748 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 01:53:36,749 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 01:53:36,821 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 01:53:36,825 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 01:53:36,825 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 01:53:36,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:53:36 BoogieIcfgContainer [2022-01-11 01:53:36,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 01:53:36,827 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 01:53:36,827 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 01:53:36,828 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 01:53:36,830 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:53:36" (1/1) ... [2022-01-11 01:53:36,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:53:36 BasicIcfg [2022-01-11 01:53:36,886 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 01:53:36,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 01:53:36,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 01:53:36,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 01:53:36,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 01:53:36" (1/4) ... [2022-01-11 01:53:36,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb6d6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:53:36, skipping insertion in model container [2022-01-11 01:53:36,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:53:36" (2/4) ... [2022-01-11 01:53:36,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb6d6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:53:36, skipping insertion in model container [2022-01-11 01:53:36,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:53:36" (3/4) ... [2022-01-11 01:53:36,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb6d6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 01:53:36, skipping insertion in model container [2022-01-11 01:53:36,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:53:36" (4/4) ... [2022-01-11 01:53:36,891 INFO L111 eAbstractionObserver]: Analyzing ICFG jain_1-1.cTransformedIcfg [2022-01-11 01:53:36,895 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 01:53:36,895 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 01:53:36,936 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 01:53:36,945 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 01:53:36,946 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 01:53:36,955 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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 01:53:36,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-01-11 01:53:36,959 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:53:36,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-01-11 01:53:36,960 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:53:36,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:53:36,964 INFO L85 PathProgramCache]: Analyzing trace with hash 57292131, now seen corresponding path program 1 times [2022-01-11 01:53:36,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:53:36,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669969074] [2022-01-11 01:53:36,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:53:36,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:53:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:53:37,185 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 01:53:37,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:53:37,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669969074] [2022-01-11 01:53:37,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669969074] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:53:37,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:53:37,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 01:53:37,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388766847] [2022-01-11 01:53:37,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:53:37,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 01:53:37,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:53:37,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 01:53:37,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 01:53:37,226 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 01:53:37,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:53:37,248 INFO L93 Difference]: Finished difference Result 18 states and 26 transitions. [2022-01-11 01:53:37,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 01:53:37,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-01-11 01:53:37,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:53:37,255 INFO L225 Difference]: With dead ends: 18 [2022-01-11 01:53:37,256 INFO L226 Difference]: Without dead ends: 9 [2022-01-11 01:53:37,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 01:53:37,259 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:53:37,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:53:37,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-01-11 01:53:37,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-01-11 01:53:37,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 01:53:37,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-01-11 01:53:37,282 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-01-11 01:53:37,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:53:37,283 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-01-11 01:53:37,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 01:53:37,283 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-01-11 01:53:37,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-11 01:53:37,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:53:37,284 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-01-11 01:53:37,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 01:53:37,285 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:53:37,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:53:37,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1688875041, now seen corresponding path program 1 times [2022-01-11 01:53:37,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:53:37,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463868548] [2022-01-11 01:53:37,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:53:37,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:53:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:53:37,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:53:37,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:53:37,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463868548] [2022-01-11 01:53:37,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463868548] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 01:53:37,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343344878] [2022-01-11 01:53:37,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:53:37,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 01:53:37,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:53:37,373 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 01:53:37,374 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 01:53:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:53:37,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-11 01:53:37,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 01:53:37,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:53:37,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 01:53:46,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:53:46,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343344878] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 01:53:46,036 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 01:53:46,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-01-11 01:53:46,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438680372] [2022-01-11 01:53:46,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 01:53:46,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 01:53:46,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:53:46,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 01:53:46,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=30, Unknown=4, NotChecked=0, Total=56 [2022-01-11 01:53:46,038 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 01:53:50,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:53:50,097 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2022-01-11 01:53:50,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 01:53:50,098 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 8 [2022-01-11 01:53:50,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:53:50,098 INFO L225 Difference]: With dead ends: 17 [2022-01-11 01:53:50,098 INFO L226 Difference]: Without dead ends: 15 [2022-01-11 01:53:50,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=34, Invalid=50, Unknown=6, NotChecked=0, Total=90 [2022-01-11 01:53:50,100 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:53:50,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 23 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 10 Unchecked, 0.0s Time] [2022-01-11 01:53:50,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-01-11 01:53:50,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-01-11 01:53:50,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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 01:53:50,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-01-11 01:53:50,103 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-01-11 01:53:50,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:53:50,104 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-01-11 01:53:50,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 01:53:50,104 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-01-11 01:53:50,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-11 01:53:50,104 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:53:50,105 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-01-11 01:53:50,113 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 01:53:50,310 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 01:53:50,310 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:53:50,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:53:50,311 INFO L85 PathProgramCache]: Analyzing trace with hash -943535903, now seen corresponding path program 2 times [2022-01-11 01:53:50,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:53:50,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218060112] [2022-01-11 01:53:50,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:53:50,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:53:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:53:50,412 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:53:50,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:53:50,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218060112] [2022-01-11 01:53:50,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218060112] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 01:53:50,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005971417] [2022-01-11 01:53:50,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 01:53:50,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 01:53:50,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:53:50,417 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 01:53:50,418 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 01:53:50,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 01:53:50,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 01:53:50,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-11 01:53:50,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 01:54:04,034 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 9 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:54:04,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 01:54:34,347 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 12 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:54:34,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005971417] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 01:54:34,348 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 01:54:34,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 12 [2022-01-11 01:54:34,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076260566] [2022-01-11 01:54:34,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 01:54:34,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-11 01:54:34,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:54:34,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-11 01:54:34,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=62, Unknown=20, NotChecked=0, Total=132 [2022-01-11 01:54:34,351 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 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)