/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loops/heavy-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 08:03:11,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 08:03:11,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 08:03:11,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 08:03:11,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 08:03:11,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 08:03:11,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 08:03:11,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 08:03:11,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 08:03:11,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 08:03:11,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 08:03:11,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 08:03:11,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 08:03:11,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 08:03:11,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 08:03:11,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 08:03:11,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 08:03:11,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 08:03:11,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 08:03:11,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 08:03:11,374 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 08:03:11,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 08:03:11,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 08:03:11,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 08:03:11,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 08:03:11,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-20 08:03:11,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-20 08:03:11,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-20 08:03:11,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-20 08:03:11,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-20 08:03:11,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-20 08:03:11,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-20 08:03:11,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-20 08:03:11,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-20 08:03:11,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-20 08:03:11,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-20 08:03:11,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-20 08:03:11,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-20 08:03:11,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-20 08:03:11,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 08:03:11,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 08:03:11,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 08:03:11,396 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-20 08:03:11,429 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 08:03:11,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 08:03:11,431 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 08:03:11,431 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 08:03:11,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 08:03:11,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 08:03:11,432 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 08:03:11,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 08:03:11,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 08:03:11,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 08:03:11,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 08:03:11,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 08:03:11,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 08:03:11,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 08:03:11,434 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 08:03:11,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 08:03:11,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 08:03:11,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 08:03:11,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 08:03:11,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:03:11,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 08:03:11,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 08:03:11,435 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 08:03:11,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 08:03:11,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 08:03:11,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 08:03:11,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-20 08:03:11,436 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-20 08:03:11,437 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 08:03:11,437 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 08:03:11,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 08:03:11,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 08:03:11,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 08:03:11,695 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 08:03:11,696 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 08:03:11,697 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/heavy-2.c [2022-03-20 08:03:11,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37e3b0a72/ae6c2d2934c04f27afcff89adc3e9429/FLAGe5fd7552f [2022-03-20 08:03:12,099 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 08:03:12,100 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/heavy-2.c [2022-03-20 08:03:12,109 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37e3b0a72/ae6c2d2934c04f27afcff89adc3e9429/FLAGe5fd7552f [2022-03-20 08:03:12,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37e3b0a72/ae6c2d2934c04f27afcff89adc3e9429 [2022-03-20 08:03:12,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 08:03:12,531 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 08:03:12,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 08:03:12,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 08:03:12,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 08:03:12,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:03:12" (1/1) ... [2022-03-20 08:03:12,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20bb7159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:12, skipping insertion in model container [2022-03-20 08:03:12,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:03:12" (1/1) ... [2022-03-20 08:03:12,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 08:03:12,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 08:03:12,679 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/heavy-2.c[600,613] [2022-03-20 08:03:12,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:03:12,722 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 08:03:12,741 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/heavy-2.c[600,613] [2022-03-20 08:03:12,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:03:12,793 INFO L208 MainTranslator]: Completed translation [2022-03-20 08:03:12,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:12 WrapperNode [2022-03-20 08:03:12,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 08:03:12,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 08:03:12,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 08:03:12,797 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 08:03:12,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:12" (1/1) ... [2022-03-20 08:03:12,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:12" (1/1) ... [2022-03-20 08:03:12,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:12" (1/1) ... [2022-03-20 08:03:12,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:12" (1/1) ... [2022-03-20 08:03:12,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:12" (1/1) ... [2022-03-20 08:03:12,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:12" (1/1) ... [2022-03-20 08:03:12,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:12" (1/1) ... [2022-03-20 08:03:12,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 08:03:12,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 08:03:12,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 08:03:12,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 08:03:12,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:12" (1/1) ... [2022-03-20 08:03:12,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:03:12,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:03:12,875 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) [2022-03-20 08:03:12,901 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 [2022-03-20 08:03:12,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 08:03:12,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 08:03:12,937 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 08:03:12,938 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 08:03:12,938 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 08:03:12,938 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 08:03:12,938 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 08:03:12,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 08:03:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 08:03:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 08:03:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 08:03:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 08:03:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 08:03:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-20 08:03:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 08:03:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 08:03:13,002 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 08:03:13,003 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 08:03:13,123 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 08:03:13,129 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 08:03:13,129 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-20 08:03:13,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:03:13 BoogieIcfgContainer [2022-03-20 08:03:13,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 08:03:13,132 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 08:03:13,132 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 08:03:13,133 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 08:03:13,142 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:03:13" (1/1) ... [2022-03-20 08:03:13,144 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-03-20 08:03:13,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:03:13 BasicIcfg [2022-03-20 08:03:13,158 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 08:03:13,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 08:03:13,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 08:03:13,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 08:03:13,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 08:03:12" (1/4) ... [2022-03-20 08:03:13,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ece084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:03:13, skipping insertion in model container [2022-03-20 08:03:13,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:12" (2/4) ... [2022-03-20 08:03:13,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ece084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:03:13, skipping insertion in model container [2022-03-20 08:03:13,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:03:13" (3/4) ... [2022-03-20 08:03:13,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ece084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 08:03:13, skipping insertion in model container [2022-03-20 08:03:13,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:03:13" (4/4) ... [2022-03-20 08:03:13,170 INFO L111 eAbstractionObserver]: Analyzing ICFG heavy-2.cqvasr [2022-03-20 08:03:13,186 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 08:03:13,187 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 08:03:13,223 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 08:03:13,228 INFO L340 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=FINITE_AUTOMATA, 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 [2022-03-20 08:03:13,228 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 08:03:13,246 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 08:03:13,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-03-20 08:03:13,249 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:03:13,249 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:03:13,249 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:03:13,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:03:13,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1140822413, now seen corresponding path program 1 times [2022-03-20 08:03:13,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:03:13,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158501298] [2022-03-20 08:03:13,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:03:13,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:03:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:13,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:03:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:13,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:03:13,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:03:13,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158501298] [2022-03-20 08:03:13,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158501298] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:03:13,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:03:13,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 08:03:13,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161650142] [2022-03-20 08:03:13,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:03:13,497 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 08:03:13,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:03:13,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 08:03:13,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 08:03:13,522 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:03:13,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:03:13,617 INFO L93 Difference]: Finished difference Result 52 states and 81 transitions. [2022-03-20 08:03:13,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 08:03:13,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2022-03-20 08:03:13,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:03:13,626 INFO L225 Difference]: With dead ends: 52 [2022-03-20 08:03:13,627 INFO L226 Difference]: Without dead ends: 33 [2022-03-20 08:03:13,629 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 08:03:13,632 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 08:03:13,633 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 25 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 08:03:13,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-20 08:03:13,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 16. [2022-03-20 08:03:13,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:03:13,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-03-20 08:03:13,663 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2022-03-20 08:03:13,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:03:13,663 INFO L478 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-03-20 08:03:13,663 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:03:13,664 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-03-20 08:03:13,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-20 08:03:13,664 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:03:13,664 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:03:13,665 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 08:03:13,665 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:03:13,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:03:13,667 INFO L85 PathProgramCache]: Analyzing trace with hash 195845143, now seen corresponding path program 1 times [2022-03-20 08:03:13,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:03:13,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83172069] [2022-03-20 08:03:13,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:03:13,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:03:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:13,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:03:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:13,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:03:13,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:03:13,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83172069] [2022-03-20 08:03:13,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83172069] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:03:13,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:03:13,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 08:03:13,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924269413] [2022-03-20 08:03:13,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:03:13,776 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 08:03:13,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:03:13,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 08:03:13,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 08:03:13,778 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:03:13,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:03:13,837 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2022-03-20 08:03:13,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 08:03:13,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-03-20 08:03:13,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:03:13,839 INFO L225 Difference]: With dead ends: 40 [2022-03-20 08:03:13,839 INFO L226 Difference]: Without dead ends: 31 [2022-03-20 08:03:13,840 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 08:03:13,841 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 08:03:13,842 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 20 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 08:03:13,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-03-20 08:03:13,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 17. [2022-03-20 08:03:13,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:03:13,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-03-20 08:03:13,849 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2022-03-20 08:03:13,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:03:13,849 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-03-20 08:03:13,849 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:03:13,849 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-03-20 08:03:13,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-20 08:03:13,850 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:03:13,850 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:03:13,850 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 08:03:13,850 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:03:13,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:03:13,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1483649217, now seen corresponding path program 1 times [2022-03-20 08:03:13,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:03:13,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725703244] [2022-03-20 08:03:13,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:03:13,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:03:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:13,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:03:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:13,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:03:13,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:03:13,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725703244] [2022-03-20 08:03:13,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725703244] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:03:13,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:03:13,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 08:03:13,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588669805] [2022-03-20 08:03:13,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:03:13,910 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 08:03:13,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:03:13,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 08:03:13,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 08:03:13,913 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:03:13,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:03:13,957 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2022-03-20 08:03:13,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 08:03:13,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-03-20 08:03:13,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:03:13,958 INFO L225 Difference]: With dead ends: 31 [2022-03-20 08:03:13,958 INFO L226 Difference]: Without dead ends: 21 [2022-03-20 08:03:13,961 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 08:03:13,962 INFO L913 BasicCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 08:03:13,963 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 26 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 08:03:13,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-03-20 08:03:13,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2022-03-20 08:03:13,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:03:13,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-03-20 08:03:13,966 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 15 [2022-03-20 08:03:13,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:03:13,966 INFO L478 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-03-20 08:03:13,966 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:03:13,966 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-03-20 08:03:13,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-20 08:03:13,967 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:03:13,967 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:03:13,967 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 08:03:13,967 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:03:13,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:03:13,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1830037535, now seen corresponding path program 1 times [2022-03-20 08:03:13,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:03:13,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019978473] [2022-03-20 08:03:13,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:03:13,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:03:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:14,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:03:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:14,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:03:14,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:03:14,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019978473] [2022-03-20 08:03:14,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019978473] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:03:14,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961609249] [2022-03-20 08:03:14,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:03:14,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:03:14,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:03:14,082 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) [2022-03-20 08:03:14,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 08:03:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:14,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 08:03:14,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:03:14,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-20 08:03:14,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:03:14,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-20 08:03:14,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961609249] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:03:14,231 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:03:14,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2022-03-20 08:03:14,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675267837] [2022-03-20 08:03:14,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:03:14,231 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 08:03:14,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:03:14,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 08:03:14,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-20 08:03:14,232 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:03:14,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:03:14,400 INFO L93 Difference]: Finished difference Result 66 states and 83 transitions. [2022-03-20 08:03:14,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-20 08:03:14,400 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-03-20 08:03:14,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:03:14,401 INFO L225 Difference]: With dead ends: 66 [2022-03-20 08:03:14,401 INFO L226 Difference]: Without dead ends: 55 [2022-03-20 08:03:14,401 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2022-03-20 08:03:14,402 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 55 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 08:03:14,402 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 52 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 08:03:14,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-03-20 08:03:14,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2022-03-20 08:03:14,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 46 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:03:14,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2022-03-20 08:03:14,409 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 17 [2022-03-20 08:03:14,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:03:14,409 INFO L478 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2022-03-20 08:03:14,409 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:03:14,410 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2022-03-20 08:03:14,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-20 08:03:14,410 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:03:14,410 INFO L499 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:03:14,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 08:03:14,636 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:03:14,636 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:03:14,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:03:14,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1722712909, now seen corresponding path program 2 times [2022-03-20 08:03:14,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:03:14,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472824941] [2022-03-20 08:03:14,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:03:14,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:03:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:14,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:03:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 50 proven. 4 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-03-20 08:03:14,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:03:14,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472824941] [2022-03-20 08:03:14,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472824941] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:03:14,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709494592] [2022-03-20 08:03:14,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 08:03:14,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:03:14,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:03:14,808 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) [2022-03-20 08:03:14,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 08:03:14,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 08:03:14,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:03:14,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-20 08:03:14,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:03:14,958 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-03-20 08:03:14,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 08:03:14,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709494592] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:03:14,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 08:03:14,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-03-20 08:03:14,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836418325] [2022-03-20 08:03:14,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:03:14,959 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 08:03:14,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:03:14,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 08:03:14,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-20 08:03:14,960 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:03:14,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:03:14,965 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2022-03-20 08:03:14,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 08:03:14,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-03-20 08:03:14,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:03:14,966 INFO L225 Difference]: With dead ends: 50 [2022-03-20 08:03:14,966 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 08:03:14,966 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-20 08:03:14,967 INFO L913 BasicCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 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 [2022-03-20 08:03:14,967 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 08:03:14,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 08:03:14,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 08:03:14,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-03-20 08:03:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 08:03:14,968 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2022-03-20 08:03:14,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:03:14,968 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 08:03:14,968 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:03:14,968 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 08:03:14,969 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 08:03:14,971 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 08:03:14,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 08:03:15,173 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:03:15,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-20 08:03:15,269 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#array~0.offset| |old(~#array~0.offset)|) (= |#memory_int| |old(#memory_int)|) (= |old(~#array~0.base)| |~#array~0.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-20 08:03:15,269 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-20 08:03:15,269 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-20 08:03:15,269 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-20 08:03:15,269 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-20 08:03:15,269 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-20 08:03:15,269 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-20 08:03:15,269 INFO L878 garLoopResultBuilder]: At program point mainENTRY(lines 7 23) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2022-03-20 08:03:15,270 INFO L878 garLoopResultBuilder]: At program point L12-3(lines 12 15) the Hoare annotation is: (= main_~a~0 1) [2022-03-20 08:03:15,270 INFO L882 garLoopResultBuilder]: For program point L12-4(lines 8 23) no Hoare annotation was computed. [2022-03-20 08:03:15,270 INFO L878 garLoopResultBuilder]: At program point L13-3(lines 13 15) the Hoare annotation is: (and (= main_~a~0 1) (< (mod main_~i~0 4294967296) 1048576)) [2022-03-20 08:03:15,270 INFO L878 garLoopResultBuilder]: At program point L18(lines 8 23) the Hoare annotation is: false [2022-03-20 08:03:15,270 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 7 23) no Hoare annotation was computed. [2022-03-20 08:03:15,270 INFO L882 garLoopResultBuilder]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2022-03-20 08:03:15,270 INFO L878 garLoopResultBuilder]: At program point L14-3(lines 14 15) the Hoare annotation is: (and (= main_~a~0 1) (< (mod main_~i~0 4294967296) 1048576)) [2022-03-20 08:03:15,270 INFO L882 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2022-03-20 08:03:15,270 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 7 23) no Hoare annotation was computed. [2022-03-20 08:03:15,270 INFO L882 garLoopResultBuilder]: For program point L13-2(lines 13 15) no Hoare annotation was computed. [2022-03-20 08:03:15,270 INFO L882 garLoopResultBuilder]: For program point L14-2(lines 14 15) no Hoare annotation was computed. [2022-03-20 08:03:15,276 INFO L719 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-03-20 08:03:15,277 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 08:03:15,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 08:03:15 BasicIcfg [2022-03-20 08:03:15,310 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 08:03:15,311 INFO L158 Benchmark]: Toolchain (without parser) took 2779.98ms. Allocated memory was 166.7MB in the beginning and 200.3MB in the end (delta: 33.6MB). Free memory was 115.1MB in the beginning and 91.3MB in the end (delta: 23.8MB). Peak memory consumption was 58.5MB. Max. memory is 8.0GB. [2022-03-20 08:03:15,311 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 166.7MB. Free memory is still 131.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 08:03:15,311 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.79ms. Allocated memory is still 166.7MB. Free memory was 114.9MB in the beginning and 109.0MB in the end (delta: 5.9MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. [2022-03-20 08:03:15,311 INFO L158 Benchmark]: Boogie Preprocessor took 41.49ms. Allocated memory is still 166.7MB. Free memory was 109.0MB in the beginning and 107.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 08:03:15,312 INFO L158 Benchmark]: RCFGBuilder took 292.60ms. Allocated memory is still 166.7MB. Free memory was 107.4MB in the beginning and 97.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-20 08:03:15,312 INFO L158 Benchmark]: IcfgTransformer took 26.72ms. Allocated memory is still 166.7MB. Free memory was 97.0MB in the beginning and 95.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 08:03:15,312 INFO L158 Benchmark]: TraceAbstraction took 2147.44ms. Allocated memory was 166.7MB in the beginning and 200.3MB in the end (delta: 33.6MB). Free memory was 94.7MB in the beginning and 91.3MB in the end (delta: 3.4MB). Peak memory consumption was 38.1MB. Max. memory is 8.0GB. [2022-03-20 08:03:15,314 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 166.7MB. Free memory is still 131.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 263.79ms. Allocated memory is still 166.7MB. Free memory was 114.9MB in the beginning and 109.0MB in the end (delta: 5.9MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.49ms. Allocated memory is still 166.7MB. Free memory was 109.0MB in the beginning and 107.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 292.60ms. Allocated memory is still 166.7MB. Free memory was 107.4MB in the beginning and 97.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 26.72ms. Allocated memory is still 166.7MB. Free memory was 97.0MB in the beginning and 95.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2147.44ms. Allocated memory was 166.7MB in the beginning and 200.3MB in the end (delta: 33.6MB). Free memory was 94.7MB in the beginning and 91.3MB in the end (delta: 3.4MB). Peak memory consumption was 38.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 5, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 105 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 105 mSDsluCounter, 143 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 69 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 147 IncrementalHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 74 mSDtfsCounter, 147 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=4, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 39 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 33 NumberOfFragments, 43 HoareAnnotationTreeSize, 8 FomulaSimplifications, 406 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 262 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 168 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 177 ConstructedInterpolants, 0 QuantifiedInterpolants, 454 SizeOfPredicates, 2 NumberOfNonLiveVariables, 177 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 293/300 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: a == 1 && i % 4294967296 < 1048576 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: a == 1 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: a == 1 && i % 4294967296 < 1048576 RESULT: Ultimate proved your program to be correct! [2022-03-20 08:03:15,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...