/usr/bin/java -ea -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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-07 11:33:11,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-07 11:33:11,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-07 11:33:11,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-07 11:33:11,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-07 11:33:11,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-07 11:33:11,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-07 11:33:11,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-07 11:33:11,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-07 11:33:11,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-07 11:33:11,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-07 11:33:11,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-07 11:33:11,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-07 11:33:11,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-07 11:33:11,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-07 11:33:11,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-07 11:33:11,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-07 11:33:11,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-07 11:33:11,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-07 11:33:11,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-07 11:33:11,738 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-07 11:33:11,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-07 11:33:11,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-07 11:33:11,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-07 11:33:11,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-07 11:33:11,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-07 11:33:11,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-07 11:33:11,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-07 11:33:11,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-07 11:33:11,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-07 11:33:11,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-07 11:33:11,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-07 11:33:11,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-07 11:33:11,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-07 11:33:11,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-07 11:33:11,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-07 11:33:11,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-07 11:33:11,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-07 11:33:11,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-07 11:33:11,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-07 11:33:11,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-07 11:33:11,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-07 11:33:11,753 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-04-07 11:33:11,780 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-07 11:33:11,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-07 11:33:11,780 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-07 11:33:11,780 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-07 11:33:11,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-07 11:33:11,780 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-07 11:33:11,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-07 11:33:11,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-07 11:33:11,781 INFO L138 SettingsManager]: * Use SBE=true [2022-04-07 11:33:11,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-07 11:33:11,781 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-07 11:33:11,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-07 11:33:11,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-07 11:33:11,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-07 11:33:11,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-07 11:33:11,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-07 11:33:11,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-07 11:33:11,782 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-07 11:33:11,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-07 11:33:11,782 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-07 11:33:11,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-07 11:33:11,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-07 11:33:11,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-07 11:33:11,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-07 11:33:11,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 11:33:11,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-07 11:33:11,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-07 11:33:11,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-07 11:33:11,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-07 11:33:11,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-07 11:33:11,783 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-07 11:33:11,783 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-07 11:33:11,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-07 11:33:11,783 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-07 11:33:11,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-07 11:33:11,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-07 11:33:11,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-07 11:33:11,999 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-07 11:33:12,000 INFO L275 PluginConnector]: CDTParser initialized [2022-04-07 11:33:12,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2022-04-07 11:33:12,035 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a98943f35/1079682c42664b5e8e86cec56204d35b/FLAGda4592635 [2022-04-07 11:33:12,405 INFO L306 CDTParser]: Found 1 translation units. [2022-04-07 11:33:12,405 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2022-04-07 11:33:12,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a98943f35/1079682c42664b5e8e86cec56204d35b/FLAGda4592635 [2022-04-07 11:33:12,422 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a98943f35/1079682c42664b5e8e86cec56204d35b [2022-04-07 11:33:12,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-07 11:33:12,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-07 11:33:12,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-07 11:33:12,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-07 11:33:12,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-07 11:33:12,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 11:33:12" (1/1) ... [2022-04-07 11:33:12,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d4f71fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 11:33:12, skipping insertion in model container [2022-04-07 11:33:12,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 11:33:12" (1/1) ... [2022-04-07 11:33:12,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-07 11:33:12,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-07 11:33:12,631 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2022-04-07 11:33:12,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 11:33:12,644 INFO L203 MainTranslator]: Completed pre-run [2022-04-07 11:33:12,658 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2022-04-07 11:33:12,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 11:33:12,670 INFO L208 MainTranslator]: Completed translation [2022-04-07 11:33:12,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 11:33:12 WrapperNode [2022-04-07 11:33:12,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-07 11:33:12,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-07 11:33:12,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-07 11:33:12,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-07 11:33:12,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 11:33:12" (1/1) ... [2022-04-07 11:33:12,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 11:33:12" (1/1) ... [2022-04-07 11:33:12,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 11:33:12" (1/1) ... [2022-04-07 11:33:12,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 11:33:12" (1/1) ... [2022-04-07 11:33:12,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 11:33:12" (1/1) ... [2022-04-07 11:33:12,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 11:33:12" (1/1) ... [2022-04-07 11:33:12,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 11:33:12" (1/1) ... [2022-04-07 11:33:12,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-07 11:33:12,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-07 11:33:12,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-07 11:33:12,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-07 11:33:12,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 11:33:12" (1/1) ... [2022-04-07 11:33:12,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 11:33:12,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 11:33:12,720 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) [2022-04-07 11:33:12,741 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 [2022-04-07 11:33:12,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-07 11:33:12,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-07 11:33:12,750 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-07 11:33:12,751 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-07 11:33:12,753 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-07 11:33:12,753 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-07 11:33:12,753 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-07 11:33:12,754 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-07 11:33:12,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-07 11:33:12,754 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-07 11:33:12,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-07 11:33:12,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-07 11:33:12,757 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-07 11:33:12,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-07 11:33:12,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-07 11:33:12,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-07 11:33:12,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-07 11:33:12,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-07 11:33:12,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-07 11:33:12,808 INFO L234 CfgBuilder]: Building ICFG [2022-04-07 11:33:12,809 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-07 11:33:12,967 INFO L275 CfgBuilder]: Performing block encoding [2022-04-07 11:33:12,971 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-07 11:33:12,971 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-04-07 11:33:12,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 11:33:12 BoogieIcfgContainer [2022-04-07 11:33:12,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-07 11:33:12,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-07 11:33:12,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-07 11:33:12,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-07 11:33:12,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.04 11:33:12" (1/3) ... [2022-04-07 11:33:12,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6971e3c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 11:33:12, skipping insertion in model container [2022-04-07 11:33:12,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 11:33:12" (2/3) ... [2022-04-07 11:33:12,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6971e3c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 11:33:12, skipping insertion in model container [2022-04-07 11:33:12,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 11:33:12" (3/3) ... [2022-04-07 11:33:12,991 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2022-04-07 11:33:12,994 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-07 11:33:12,994 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-07 11:33:13,038 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-07 11:33:13,042 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=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 [2022-04-07 11:33:13,043 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-07 11:33:13,082 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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) [2022-04-07 11:33:13,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-07 11:33:13,085 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 11:33:13,085 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 11:33:13,086 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 11:33:13,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 11:33:13,089 INFO L85 PathProgramCache]: Analyzing trace with hash -782080232, now seen corresponding path program 1 times [2022-04-07 11:33:13,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 11:33:13,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148234862] [2022-04-07 11:33:13,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 11:33:13,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 11:33:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 11:33:13,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 11:33:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 11:33:13,314 INFO L290 TraceCheckUtils]: 0: Hoare triple {29#(and (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_65~0)| ~__return_65~0) (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(28, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_55_0~0 := 0;~__return_65~0 := 0; {21#true} is VALID [2022-04-07 11:33:13,314 INFO L290 TraceCheckUtils]: 1: Hoare triple {21#true} assume true; {21#true} is VALID [2022-04-07 11:33:13,314 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {21#true} {21#true} #43#return; {21#true} is VALID [2022-04-07 11:33:13,316 INFO L272 TraceCheckUtils]: 0: Hoare triple {21#true} call ULTIMATE.init(); {29#(and (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_65~0)| ~__return_65~0) (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-07 11:33:13,316 INFO L290 TraceCheckUtils]: 1: Hoare triple {29#(and (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_65~0)| ~__return_65~0) (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(28, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_55_0~0 := 0;~__return_65~0 := 0; {21#true} is VALID [2022-04-07 11:33:13,317 INFO L290 TraceCheckUtils]: 2: Hoare triple {21#true} assume true; {21#true} is VALID [2022-04-07 11:33:13,317 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {21#true} {21#true} #43#return; {21#true} is VALID [2022-04-07 11:33:13,317 INFO L272 TraceCheckUtils]: 4: Hoare triple {21#true} call #t~ret5 := main(); {21#true} is VALID [2022-04-07 11:33:13,318 INFO L290 TraceCheckUtils]: 5: Hoare triple {21#true} havoc ~main__x~0;havoc ~main__y~0;~main__x~0 := -50;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__y~0 := #t~nondet4;havoc #t~nondet4; {26#(<= (+ main_~main__x~0 50) 0)} is VALID [2022-04-07 11:33:13,319 INFO L290 TraceCheckUtils]: 6: Hoare triple {26#(<= (+ main_~main__x~0 50) 0)} assume !!(-1000 < ~main__y~0); {26#(<= (+ main_~main__x~0 50) 0)} is VALID [2022-04-07 11:33:13,319 INFO L290 TraceCheckUtils]: 7: Hoare triple {26#(<= (+ main_~main__x~0 50) 0)} assume !!(~main__y~0 < 1000000); {26#(<= (+ main_~main__x~0 50) 0)} is VALID [2022-04-07 11:33:13,320 INFO L290 TraceCheckUtils]: 8: Hoare triple {26#(<= (+ main_~main__x~0 50) 0)} assume ~main__x~0 < 0;~main__x~0 := ~main__x~0 + ~main__y~0;~main____CPAchecker_TMP_0~0 := ~main__y~0;~main__y~0 := 1 + ~main__y~0;~__tmp_55_0~0 := ~main____CPAchecker_TMP_0~0; {27#(<= (+ 51 main_~main__x~0) main_~main__y~0)} is VALID [2022-04-07 11:33:13,320 INFO L290 TraceCheckUtils]: 9: Hoare triple {27#(<= (+ 51 main_~main__x~0) main_~main__y~0)} ~main____CPAchecker_TMP_0~0 := ~__tmp_55_0~0; {27#(<= (+ 51 main_~main__x~0) main_~main__y~0)} is VALID [2022-04-07 11:33:13,321 INFO L290 TraceCheckUtils]: 10: Hoare triple {27#(<= (+ 51 main_~main__x~0) main_~main__y~0)} assume !(~main__x~0 < 0);havoc ~__tmp_1~0;~__tmp_1~0 := (if ~main__y~0 > 0 then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {28#(not (= main_~__VERIFIER_assert__cond~0 0))} is VALID [2022-04-07 11:33:13,322 INFO L290 TraceCheckUtils]: 11: Hoare triple {28#(not (= main_~__VERIFIER_assert__cond~0 0))} assume 0 == ~__VERIFIER_assert__cond~0; {22#false} is VALID [2022-04-07 11:33:13,322 INFO L290 TraceCheckUtils]: 12: Hoare triple {22#false} assume !false; {22#false} is VALID [2022-04-07 11:33:13,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 11:33:13,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 11:33:13,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148234862] [2022-04-07 11:33:13,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148234862] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 11:33:13,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 11:33:13,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 11:33:13,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394609613] [2022-04-07 11:33:13,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 11:33:13,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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 13 [2022-04-07 11:33:13,333 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-07 11:33:13,335 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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) [2022-04-07 11:33:13,352 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 11:33:13,352 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 11:33:13,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-07 11:33:13,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 11:33:13,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-07 11:33:13,370 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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) [2022-04-07 11:33:13,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 11:33:13,625 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2022-04-07 11:33:13,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-07 11:33:13,626 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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 13 [2022-04-07 11:33:13,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 11:33:13,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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) [2022-04-07 11:33:13,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 38 transitions. [2022-04-07 11:33:13,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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) [2022-04-07 11:33:13,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 38 transitions. [2022-04-07 11:33:13,635 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 38 transitions. [2022-04-07 11:33:13,664 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 11:33:13,668 INFO L225 Difference]: With dead ends: 33 [2022-04-07 11:33:13,668 INFO L226 Difference]: Without dead ends: 16 [2022-04-07 11:33:13,670 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-04-07 11:33:13,672 INFO L913 BasicCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-07 11:33:13,673 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 54 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-07 11:33:13,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-04-07 11:33:13,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-04-07 11:33:13,690 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-07 11:33:13,690 INFO L82 GeneralOperation]: Start isEquivalent. First operand 16 states. Second operand has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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) [2022-04-07 11:33:13,691 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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) [2022-04-07 11:33:13,691 INFO L87 Difference]: Start difference. First operand 16 states. Second operand has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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) [2022-04-07 11:33:13,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 11:33:13,692 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-04-07 11:33:13,692 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-04-07 11:33:13,693 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 11:33:13,693 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 11:33:13,693 INFO L74 IsIncluded]: Start isIncluded. First operand has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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) Second operand 16 states. [2022-04-07 11:33:13,693 INFO L87 Difference]: Start difference. First operand has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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) Second operand 16 states. [2022-04-07 11:33:13,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 11:33:13,694 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-04-07 11:33:13,695 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-04-07 11:33:13,695 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 11:33:13,695 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 11:33:13,695 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-07 11:33:13,695 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-07 11:33:13,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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) [2022-04-07 11:33:13,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-04-07 11:33:13,697 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2022-04-07 11:33:13,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 11:33:13,697 INFO L478 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-04-07 11:33:13,697 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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) [2022-04-07 11:33:13,697 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-04-07 11:33:13,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-04-07 11:33:13,698 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 11:33:13,698 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 11:33:13,698 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-07 11:33:13,698 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 11:33:13,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 11:33:13,699 INFO L85 PathProgramCache]: Analyzing trace with hash 38085627, now seen corresponding path program 1 times [2022-04-07 11:33:13,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 11:33:13,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821445974] [2022-04-07 11:33:13,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 11:33:13,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 11:33:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 11:33:13,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 11:33:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 11:33:13,771 INFO L290 TraceCheckUtils]: 0: Hoare triple {140#(and (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_65~0)| ~__return_65~0) (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(28, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_55_0~0 := 0;~__return_65~0 := 0; {131#true} is VALID [2022-04-07 11:33:13,771 INFO L290 TraceCheckUtils]: 1: Hoare triple {131#true} assume true; {131#true} is VALID [2022-04-07 11:33:13,771 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {131#true} {131#true} #43#return; {131#true} is VALID [2022-04-07 11:33:13,772 INFO L272 TraceCheckUtils]: 0: Hoare triple {131#true} call ULTIMATE.init(); {140#(and (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_65~0)| ~__return_65~0) (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-07 11:33:13,772 INFO L290 TraceCheckUtils]: 1: Hoare triple {140#(and (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_65~0)| ~__return_65~0) (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(28, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_55_0~0 := 0;~__return_65~0 := 0; {131#true} is VALID [2022-04-07 11:33:13,772 INFO L290 TraceCheckUtils]: 2: Hoare triple {131#true} assume true; {131#true} is VALID [2022-04-07 11:33:13,772 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {131#true} {131#true} #43#return; {131#true} is VALID [2022-04-07 11:33:13,772 INFO L272 TraceCheckUtils]: 4: Hoare triple {131#true} call #t~ret5 := main(); {131#true} is VALID [2022-04-07 11:33:13,773 INFO L290 TraceCheckUtils]: 5: Hoare triple {131#true} havoc ~main__x~0;havoc ~main__y~0;~main__x~0 := -50;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__y~0 := #t~nondet4;havoc #t~nondet4; {136#(<= (+ main_~main__x~0 50) 0)} is VALID [2022-04-07 11:33:13,773 INFO L290 TraceCheckUtils]: 6: Hoare triple {136#(<= (+ main_~main__x~0 50) 0)} assume !!(-1000 < ~main__y~0); {136#(<= (+ main_~main__x~0 50) 0)} is VALID [2022-04-07 11:33:13,773 INFO L290 TraceCheckUtils]: 7: Hoare triple {136#(<= (+ main_~main__x~0 50) 0)} assume !!(~main__y~0 < 1000000); {136#(<= (+ main_~main__x~0 50) 0)} is VALID [2022-04-07 11:33:13,774 INFO L290 TraceCheckUtils]: 8: Hoare triple {136#(<= (+ main_~main__x~0 50) 0)} assume ~main__x~0 < 0;~main__x~0 := ~main__x~0 + ~main__y~0;~main____CPAchecker_TMP_0~0 := ~main__y~0;~main__y~0 := 1 + ~main__y~0;~__tmp_55_0~0 := ~main____CPAchecker_TMP_0~0; {137#(<= (+ 51 main_~main__x~0) main_~main__y~0)} is VALID [2022-04-07 11:33:13,774 INFO L290 TraceCheckUtils]: 9: Hoare triple {137#(<= (+ 51 main_~main__x~0) main_~main__y~0)} ~main____CPAchecker_TMP_0~0 := ~__tmp_55_0~0; {137#(<= (+ 51 main_~main__x~0) main_~main__y~0)} is VALID [2022-04-07 11:33:13,775 INFO L290 TraceCheckUtils]: 10: Hoare triple {137#(<= (+ 51 main_~main__x~0) main_~main__y~0)} assume ~main__x~0 < 0;~main__x~0 := ~main__x~0 + ~main__y~0;~main____CPAchecker_TMP_0~1 := ~main__y~0;~main__y~0 := 1 + ~main__y~0;~__tmp_55_0~0 := ~main____CPAchecker_TMP_0~1; {138#(<= (+ 53 main_~main__x~0) (* 2 main_~main__y~0))} is VALID [2022-04-07 11:33:13,775 INFO L290 TraceCheckUtils]: 11: Hoare triple {138#(<= (+ 53 main_~main__x~0) (* 2 main_~main__y~0))} ~main____CPAchecker_TMP_0~0 := ~__tmp_55_0~0; {138#(<= (+ 53 main_~main__x~0) (* 2 main_~main__y~0))} is VALID [2022-04-07 11:33:13,776 INFO L290 TraceCheckUtils]: 12: Hoare triple {138#(<= (+ 53 main_~main__x~0) (* 2 main_~main__y~0))} assume !(~main__x~0 < 0);havoc ~__tmp_1~0;~__tmp_1~0 := (if ~main__y~0 > 0 then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {139#(not (= main_~__VERIFIER_assert__cond~0 0))} is VALID [2022-04-07 11:33:13,776 INFO L290 TraceCheckUtils]: 13: Hoare triple {139#(not (= main_~__VERIFIER_assert__cond~0 0))} assume 0 == ~__VERIFIER_assert__cond~0; {132#false} is VALID [2022-04-07 11:33:13,776 INFO L290 TraceCheckUtils]: 14: Hoare triple {132#false} assume !false; {132#false} is VALID [2022-04-07 11:33:13,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 11:33:13,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 11:33:13,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821445974] [2022-04-07 11:33:13,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821445974] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 11:33:13,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983605355] [2022-04-07 11:33:13,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 11:33:13,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 11:33:13,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 11:33:13,792 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) [2022-04-07 11:33:13,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-07 11:33:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 11:33:13,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-07 11:33:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 11:33:13,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 11:33:14,109 INFO L272 TraceCheckUtils]: 0: Hoare triple {131#true} call ULTIMATE.init(); {131#true} is VALID [2022-04-07 11:33:14,109 INFO L290 TraceCheckUtils]: 1: Hoare triple {131#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(28, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_55_0~0 := 0;~__return_65~0 := 0; {131#true} is VALID [2022-04-07 11:33:14,109 INFO L290 TraceCheckUtils]: 2: Hoare triple {131#true} assume true; {131#true} is VALID [2022-04-07 11:33:14,109 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {131#true} {131#true} #43#return; {131#true} is VALID [2022-04-07 11:33:14,109 INFO L272 TraceCheckUtils]: 4: Hoare triple {131#true} call #t~ret5 := main(); {131#true} is VALID [2022-04-07 11:33:14,110 INFO L290 TraceCheckUtils]: 5: Hoare triple {131#true} havoc ~main__x~0;havoc ~main__y~0;~main__x~0 := -50;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__y~0 := #t~nondet4;havoc #t~nondet4; {136#(<= (+ main_~main__x~0 50) 0)} is VALID [2022-04-07 11:33:14,110 INFO L290 TraceCheckUtils]: 6: Hoare triple {136#(<= (+ main_~main__x~0 50) 0)} assume !!(-1000 < ~main__y~0); {136#(<= (+ main_~main__x~0 50) 0)} is VALID [2022-04-07 11:33:14,111 INFO L290 TraceCheckUtils]: 7: Hoare triple {136#(<= (+ main_~main__x~0 50) 0)} assume !!(~main__y~0 < 1000000); {136#(<= (+ main_~main__x~0 50) 0)} is VALID [2022-04-07 11:33:14,111 INFO L290 TraceCheckUtils]: 8: Hoare triple {136#(<= (+ main_~main__x~0 50) 0)} assume ~main__x~0 < 0;~main__x~0 := ~main__x~0 + ~main__y~0;~main____CPAchecker_TMP_0~0 := ~main__y~0;~main__y~0 := 1 + ~main__y~0;~__tmp_55_0~0 := ~main____CPAchecker_TMP_0~0; {137#(<= (+ 51 main_~main__x~0) main_~main__y~0)} is VALID [2022-04-07 11:33:14,111 INFO L290 TraceCheckUtils]: 9: Hoare triple {137#(<= (+ 51 main_~main__x~0) main_~main__y~0)} ~main____CPAchecker_TMP_0~0 := ~__tmp_55_0~0; {137#(<= (+ 51 main_~main__x~0) main_~main__y~0)} is VALID [2022-04-07 11:33:14,112 INFO L290 TraceCheckUtils]: 10: Hoare triple {137#(<= (+ 51 main_~main__x~0) main_~main__y~0)} assume ~main__x~0 < 0;~main__x~0 := ~main__x~0 + ~main__y~0;~main____CPAchecker_TMP_0~1 := ~main__y~0;~main__y~0 := 1 + ~main__y~0;~__tmp_55_0~0 := ~main____CPAchecker_TMP_0~1; {138#(<= (+ 53 main_~main__x~0) (* 2 main_~main__y~0))} is VALID [2022-04-07 11:33:14,112 INFO L290 TraceCheckUtils]: 11: Hoare triple {138#(<= (+ 53 main_~main__x~0) (* 2 main_~main__y~0))} ~main____CPAchecker_TMP_0~0 := ~__tmp_55_0~0; {138#(<= (+ 53 main_~main__x~0) (* 2 main_~main__y~0))} is VALID [2022-04-07 11:33:14,113 INFO L290 TraceCheckUtils]: 12: Hoare triple {138#(<= (+ 53 main_~main__x~0) (* 2 main_~main__y~0))} assume !(~main__x~0 < 0);havoc ~__tmp_1~0;~__tmp_1~0 := (if ~main__y~0 > 0 then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {180#(<= 1 main_~__VERIFIER_assert__cond~0)} is VALID [2022-04-07 11:33:14,113 INFO L290 TraceCheckUtils]: 13: Hoare triple {180#(<= 1 main_~__VERIFIER_assert__cond~0)} assume 0 == ~__VERIFIER_assert__cond~0; {132#false} is VALID [2022-04-07 11:33:14,114 INFO L290 TraceCheckUtils]: 14: Hoare triple {132#false} assume !false; {132#false} is VALID [2022-04-07 11:33:14,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 11:33:14,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-07 11:33:14,304 INFO L290 TraceCheckUtils]: 14: Hoare triple {132#false} assume !false; {132#false} is VALID [2022-04-07 11:33:14,307 INFO L290 TraceCheckUtils]: 13: Hoare triple {180#(<= 1 main_~__VERIFIER_assert__cond~0)} assume 0 == ~__VERIFIER_assert__cond~0; {132#false} is VALID [2022-04-07 11:33:14,307 INFO L290 TraceCheckUtils]: 12: Hoare triple {193#(or (< main_~main__x~0 0) (< 0 main_~main__y~0))} assume !(~main__x~0 < 0);havoc ~__tmp_1~0;~__tmp_1~0 := (if ~main__y~0 > 0 then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {180#(<= 1 main_~__VERIFIER_assert__cond~0)} is VALID [2022-04-07 11:33:14,308 INFO L290 TraceCheckUtils]: 11: Hoare triple {193#(or (< main_~main__x~0 0) (< 0 main_~main__y~0))} ~main____CPAchecker_TMP_0~0 := ~__tmp_55_0~0; {193#(or (< main_~main__x~0 0) (< 0 main_~main__y~0))} is VALID [2022-04-07 11:33:14,308 INFO L290 TraceCheckUtils]: 10: Hoare triple {200#(or (< 0 (+ main_~main__y~0 1)) (< (+ main_~main__x~0 main_~main__y~0) 0))} assume ~main__x~0 < 0;~main__x~0 := ~main__x~0 + ~main__y~0;~main____CPAchecker_TMP_0~1 := ~main__y~0;~main__y~0 := 1 + ~main__y~0;~__tmp_55_0~0 := ~main____CPAchecker_TMP_0~1; {193#(or (< main_~main__x~0 0) (< 0 main_~main__y~0))} is VALID [2022-04-07 11:33:14,309 INFO L290 TraceCheckUtils]: 9: Hoare triple {200#(or (< 0 (+ main_~main__y~0 1)) (< (+ main_~main__x~0 main_~main__y~0) 0))} ~main____CPAchecker_TMP_0~0 := ~__tmp_55_0~0; {200#(or (< 0 (+ main_~main__y~0 1)) (< (+ main_~main__x~0 main_~main__y~0) 0))} is VALID [2022-04-07 11:33:14,309 INFO L290 TraceCheckUtils]: 8: Hoare triple {207#(< main_~main__x~0 3)} assume ~main__x~0 < 0;~main__x~0 := ~main__x~0 + ~main__y~0;~main____CPAchecker_TMP_0~0 := ~main__y~0;~main__y~0 := 1 + ~main__y~0;~__tmp_55_0~0 := ~main____CPAchecker_TMP_0~0; {200#(or (< 0 (+ main_~main__y~0 1)) (< (+ main_~main__x~0 main_~main__y~0) 0))} is VALID [2022-04-07 11:33:14,311 INFO L290 TraceCheckUtils]: 7: Hoare triple {207#(< main_~main__x~0 3)} assume !!(~main__y~0 < 1000000); {207#(< main_~main__x~0 3)} is VALID [2022-04-07 11:33:14,311 INFO L290 TraceCheckUtils]: 6: Hoare triple {207#(< main_~main__x~0 3)} assume !!(-1000 < ~main__y~0); {207#(< main_~main__x~0 3)} is VALID [2022-04-07 11:33:14,311 INFO L290 TraceCheckUtils]: 5: Hoare triple {131#true} havoc ~main__x~0;havoc ~main__y~0;~main__x~0 := -50;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__y~0 := #t~nondet4;havoc #t~nondet4; {207#(< main_~main__x~0 3)} is VALID [2022-04-07 11:33:14,312 INFO L272 TraceCheckUtils]: 4: Hoare triple {131#true} call #t~ret5 := main(); {131#true} is VALID [2022-04-07 11:33:14,312 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {131#true} {131#true} #43#return; {131#true} is VALID [2022-04-07 11:33:14,312 INFO L290 TraceCheckUtils]: 2: Hoare triple {131#true} assume true; {131#true} is VALID [2022-04-07 11:33:14,312 INFO L290 TraceCheckUtils]: 1: Hoare triple {131#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(28, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_55_0~0 := 0;~__return_65~0 := 0; {131#true} is VALID [2022-04-07 11:33:14,312 INFO L272 TraceCheckUtils]: 0: Hoare triple {131#true} call ULTIMATE.init(); {131#true} is VALID [2022-04-07 11:33:14,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 11:33:14,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983605355] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-07 11:33:14,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-04-07 11:33:14,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2022-04-07 11:33:14,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832674647] [2022-04-07 11:33:14,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 11:33:14,314 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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 15 [2022-04-07 11:33:14,314 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-07 11:33:14,314 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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) [2022-04-07 11:33:14,326 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 11:33:14,326 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 11:33:14,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-07 11:33:14,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 11:33:14,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-04-07 11:33:14,327 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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) [2022-04-07 11:33:14,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 11:33:14,379 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-04-07 11:33:14,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-07 11:33:14,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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 15 [2022-04-07 11:33:14,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 11:33:14,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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) [2022-04-07 11:33:14,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2022-04-07 11:33:14,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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) [2022-04-07 11:33:14,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2022-04-07 11:33:14,381 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 14 transitions. [2022-04-07 11:33:14,390 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 11:33:14,391 INFO L225 Difference]: With dead ends: 16 [2022-04-07 11:33:14,391 INFO L226 Difference]: Without dead ends: 0 [2022-04-07 11:33:14,391 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-04-07 11:33:14,392 INFO L913 BasicCegarLoop]: 7 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 11:33:14,392 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 25 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 11:33:14,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-07 11:33:14,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-07 11:33:14,393 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-07 11:33:14,393 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second 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) [2022-04-07 11:33:14,393 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second 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) [2022-04-07 11:33:14,393 INFO L87 Difference]: Start difference. First operand 0 states. Second 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) [2022-04-07 11:33:14,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 11:33:14,393 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-07 11:33:14,394 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-07 11:33:14,394 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 11:33:14,394 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 11:33:14,394 INFO L74 IsIncluded]: Start isIncluded. First 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) Second operand 0 states. [2022-04-07 11:33:14,394 INFO L87 Difference]: Start difference. First 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) Second operand 0 states. [2022-04-07 11:33:14,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 11:33:14,394 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-07 11:33:14,394 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-07 11:33:14,394 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 11:33:14,394 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 11:33:14,394 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-07 11:33:14,395 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-07 11:33:14,395 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) [2022-04-07 11:33:14,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-07 11:33:14,395 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2022-04-07 11:33:14,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 11:33:14,395 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-07 11:33:14,395 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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) [2022-04-07 11:33:14,395 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-07 11:33:14,395 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 11:33:14,397 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-07 11:33:14,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-07 11:33:14,611 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 11:33:14,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-07 11:33:14,657 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2022-04-07 11:33:14,657 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2022-04-07 11:33:14,658 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2022-04-07 11:33:14,658 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2022-04-07 11:33:14,658 INFO L882 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-04-07 11:33:14,658 INFO L882 garLoopResultBuilder]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2022-04-07 11:33:14,658 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2022-04-07 11:33:14,658 INFO L882 garLoopResultBuilder]: For program point L32(lines 32 71) no Hoare annotation was computed. [2022-04-07 11:33:14,658 INFO L882 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 57) no Hoare annotation was computed. [2022-04-07 11:33:14,659 INFO L878 garLoopResultBuilder]: At program point mainENTRY(lines 14 74) the Hoare annotation is: (and (= |old(~__return_65~0)| ~__return_65~0) (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|)) [2022-04-07 11:33:14,659 INFO L882 garLoopResultBuilder]: For program point L26(lines 26 72) no Hoare annotation was computed. [2022-04-07 11:33:14,659 INFO L882 garLoopResultBuilder]: For program point L57(line 57) no Hoare annotation was computed. [2022-04-07 11:33:14,659 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 14 74) no Hoare annotation was computed. [2022-04-07 11:33:14,659 INFO L882 garLoopResultBuilder]: For program point L55(lines 55 64) no Hoare annotation was computed. [2022-04-07 11:33:14,659 INFO L882 garLoopResultBuilder]: For program point L20(lines 20 73) no Hoare annotation was computed. [2022-04-07 11:33:14,659 INFO L878 garLoopResultBuilder]: At program point L46(lines 33 67) the Hoare annotation is: (or (< main_~main__x~0 0) (< 0 main_~main__y~0)) [2022-04-07 11:33:14,659 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 14 74) no Hoare annotation was computed. [2022-04-07 11:33:14,660 INFO L882 garLoopResultBuilder]: For program point L40(lines 40 66) no Hoare annotation was computed. [2022-04-07 11:33:14,660 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-04-07 11:33:14,660 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_65~0)| ~__return_65~0) (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-07 11:33:14,660 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-04-07 11:33:14,660 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-04-07 11:33:14,661 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-07 11:33:14,662 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-07 11:33:14,662 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-04-07 11:33:14,665 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-07 11:33:14,666 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-07 11:33:14,669 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-07 11:33:14,669 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-07 11:33:14,670 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2022-04-07 11:33:14,670 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2022-04-07 11:33:14,670 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-07 11:33:14,670 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-07 11:33:14,670 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-07 11:33:14,671 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-07 11:33:14,671 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-07 11:33:14,671 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2022-04-07 11:33:14,671 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2022-04-07 11:33:14,671 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-07 11:33:14,671 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-07 11:33:14,671 WARN L170 areAnnotationChecker]: L7-2 has no Hoare annotation [2022-04-07 11:33:14,671 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-07 11:33:14,671 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2022-04-07 11:33:14,671 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2022-04-07 11:33:14,671 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-07 11:33:14,671 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2022-04-07 11:33:14,672 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2022-04-07 11:33:14,672 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2022-04-07 11:33:14,672 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2022-04-07 11:33:14,672 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2022-04-07 11:33:14,672 WARN L170 areAnnotationChecker]: L55 has no Hoare annotation [2022-04-07 11:33:14,672 WARN L170 areAnnotationChecker]: L55 has no Hoare annotation [2022-04-07 11:33:14,672 WARN L170 areAnnotationChecker]: L57 has no Hoare annotation [2022-04-07 11:33:14,672 WARN L170 areAnnotationChecker]: L57 has no Hoare annotation [2022-04-07 11:33:14,672 INFO L163 areAnnotationChecker]: CFG has 2 edges. 2 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-07 11:33:14,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.04 11:33:14 BoogieIcfgContainer [2022-04-07 11:33:14,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-07 11:33:14,683 INFO L158 Benchmark]: Toolchain (without parser) took 2257.63ms. Allocated memory is still 186.6MB. Free memory was 139.1MB in the beginning and 90.2MB in the end (delta: 48.9MB). Peak memory consumption was 49.4MB. Max. memory is 8.0GB. [2022-04-07 11:33:14,683 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 155.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-07 11:33:14,683 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.50ms. Allocated memory is still 186.6MB. Free memory was 138.8MB in the beginning and 164.2MB in the end (delta: -25.4MB). Peak memory consumption was 13.2MB. Max. memory is 8.0GB. [2022-04-07 11:33:14,683 INFO L158 Benchmark]: Boogie Preprocessor took 28.40ms. Allocated memory is still 186.6MB. Free memory was 164.2MB in the beginning and 162.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-07 11:33:14,684 INFO L158 Benchmark]: RCFGBuilder took 271.96ms. Allocated memory is still 186.6MB. Free memory was 162.7MB in the beginning and 152.0MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-07 11:33:14,686 INFO L158 Benchmark]: TraceAbstraction took 1708.80ms. Allocated memory is still 186.6MB. Free memory was 151.5MB in the beginning and 90.2MB in the end (delta: 61.3MB). Peak memory consumption was 61.3MB. Max. memory is 8.0GB. [2022-04-07 11:33:14,687 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 155.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 243.50ms. Allocated memory is still 186.6MB. Free memory was 138.8MB in the beginning and 164.2MB in the end (delta: -25.4MB). Peak memory consumption was 13.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.40ms. Allocated memory is still 186.6MB. Free memory was 164.2MB in the beginning and 162.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 271.96ms. Allocated memory is still 186.6MB. Free memory was 162.7MB in the beginning and 152.0MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1708.80ms. Allocated memory is still 186.6MB. Free memory was 151.5MB in the beginning and 90.2MB in the end (delta: 61.3MB). Peak memory consumption was 61.3MB. 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: 57]: 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 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 79 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 54 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 57 IncrementalHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 25 mSDtfsCounter, 57 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 13, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 6 NumberOfFragments, 32 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 13 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 216 SizeOfPredicates, 4 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/6 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: 33]: Loop Invariant Derived loop invariant: main__x < 0 || 0 < main__y RESULT: Ultimate proved your program to be correct! [2022-04-07 11:33:14,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...