/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/loop-invgen/MADWiFi-encode_ie_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 19:36:15,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 19:36:15,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 19:36:15,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-17 19:36:15,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-17 19:36:15,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-17 19:36:15,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-17 19:36:15,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-17 19:36:15,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-17 19:36:15,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-17 19:36:15,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-17 19:36:15,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-17 19:36:15,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-17 19:36:15,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-17 19:36:15,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-17 19:36:15,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-17 19:36:15,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-17 19:36:15,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-17 19:36:15,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-17 19:36:15,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-17 19:36:15,843 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-17 19:36:15,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-17 19:36:15,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-17 19:36:15,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-17 19:36:15,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-17 19:36:15,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-17 19:36:15,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 19:36:15,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 19:36:15,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 19:36:15,856 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-17 19:36:15,884 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 19:36:15,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 19:36:15,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-17 19:36:15,885 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-17 19:36:15,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-17 19:36:15,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-17 19:36:15,886 INFO L138 SettingsManager]: * Use SBE=true [2022-03-17 19:36:15,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 19:36:15,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 19:36:15,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 19:36:15,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 19:36:15,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 19:36:15,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 19:36:15,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 19:36:15,887 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 19:36:15,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 19:36:15,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 19:36:15,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 19:36:15,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 19:36:15,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 19:36:15,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 19:36:15,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-17 19:36:15,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-17 19:36:15,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 19:36:15,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-17 19:36:15,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-17 19:36:15,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-17 19:36:15,888 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-17 19:36:15,889 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 19:36:15,889 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 19:36:16,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 19:36:16,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 19:36:16,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 19:36:16,164 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 19:36:16,165 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 19:36:16,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2022-03-17 19:36:16,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7846cac4/4d6aa85f824a4631a343d6fa0f3def07/FLAG2b7b20045 [2022-03-17 19:36:16,588 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 19:36:16,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2022-03-17 19:36:16,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7846cac4/4d6aa85f824a4631a343d6fa0f3def07/FLAG2b7b20045 [2022-03-17 19:36:16,604 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7846cac4/4d6aa85f824a4631a343d6fa0f3def07 [2022-03-17 19:36:16,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 19:36:16,607 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 19:36:16,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 19:36:16,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 19:36:16,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 19:36:16,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:36:16" (1/1) ... [2022-03-17 19:36:16,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4153ae0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:36:16, skipping insertion in model container [2022-03-17 19:36:16,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:36:16" (1/1) ... [2022-03-17 19:36:16,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 19:36:16,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 19:36:16,824 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-invgen/MADWiFi-encode_ie_ok.i[893,906] [2022-03-17 19:36:16,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 19:36:16,860 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 19:36:16,874 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-invgen/MADWiFi-encode_ie_ok.i[893,906] [2022-03-17 19:36:16,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 19:36:16,905 INFO L208 MainTranslator]: Completed translation [2022-03-17 19:36:16,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:36:16 WrapperNode [2022-03-17 19:36:16,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 19:36:16,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 19:36:16,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 19:36:16,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 19:36:16,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:36:16" (1/1) ... [2022-03-17 19:36:16,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:36:16" (1/1) ... [2022-03-17 19:36:16,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:36:16" (1/1) ... [2022-03-17 19:36:16,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:36:16" (1/1) ... [2022-03-17 19:36:16,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:36:16" (1/1) ... [2022-03-17 19:36:16,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:36:16" (1/1) ... [2022-03-17 19:36:16,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:36:16" (1/1) ... [2022-03-17 19:36:16,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 19:36:16,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 19:36:16,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 19:36:16,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 19:36:16,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:36:16" (1/1) ... [2022-03-17 19:36:16,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 19:36:16,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 19:36:16,980 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) [2022-03-17 19:36:16,982 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 [2022-03-17 19:36:17,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 19:36:17,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 19:36:17,008 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 19:36:17,009 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-17 19:36:17,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-17 19:36:17,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 19:36:17,009 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 19:36:17,009 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 19:36:17,009 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-17 19:36:17,009 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-17 19:36:17,010 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 19:36:17,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 19:36:17,010 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-17 19:36:17,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-17 19:36:17,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-17 19:36:17,010 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 19:36:17,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 19:36:17,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 19:36:17,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 19:36:17,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 19:36:17,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 19:36:17,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 19:36:17,062 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 19:36:17,064 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 19:36:17,170 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 19:36:17,177 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 19:36:17,178 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-17 19:36:17,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 07:36:17 BoogieIcfgContainer [2022-03-17 19:36:17,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 19:36:17,180 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 19:36:17,180 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 19:36:17,181 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 19:36:17,183 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 07:36:17" (1/1) ... [2022-03-17 19:36:17,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 07:36:17 BasicIcfg [2022-03-17 19:36:17,200 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 19:36:17,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 19:36:17,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 19:36:17,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 19:36:17,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:36:16" (1/4) ... [2022-03-17 19:36:17,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17619657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:36:17, skipping insertion in model container [2022-03-17 19:36:17,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:36:16" (2/4) ... [2022-03-17 19:36:17,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17619657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:36:17, skipping insertion in model container [2022-03-17 19:36:17,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 07:36:17" (3/4) ... [2022-03-17 19:36:17,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17619657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 07:36:17, skipping insertion in model container [2022-03-17 19:36:17,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 07:36:17" (4/4) ... [2022-03-17 19:36:17,210 INFO L111 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok.iqvasr [2022-03-17 19:36:17,213 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-17 19:36:17,213 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 19:36:17,248 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 19:36:17,253 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 [2022-03-17 19:36:17,254 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 19:36:17,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-17 19:36:17,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-17 19:36:17,272 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:36:17,273 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:36:17,273 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 19:36:17,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:36:17,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1231819666, now seen corresponding path program 1 times [2022-03-17 19:36:17,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:36:17,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546954742] [2022-03-17 19:36:17,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:36:17,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:36:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:36:17,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:36:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:36:17,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:36:17,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:36:17,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546954742] [2022-03-17 19:36:17,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546954742] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 19:36:17,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 19:36:17,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-17 19:36:17,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276285722] [2022-03-17 19:36:17,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 19:36:17,553 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-17 19:36:17,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:36:17,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-17 19:36:17,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-17 19:36:17,575 INFO L87 Difference]: Start difference. First operand has 29 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 19:36:17,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:36:17,786 INFO L93 Difference]: Finished difference Result 52 states and 68 transitions. [2022-03-17 19:36:17,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 19:36:17,789 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 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 19 [2022-03-17 19:36:17,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:36:17,794 INFO L225 Difference]: With dead ends: 52 [2022-03-17 19:36:17,794 INFO L226 Difference]: Without dead ends: 29 [2022-03-17 19:36:17,797 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-17 19:36:17,800 INFO L912 BasicCegarLoop]: 33 mSDtfsCounter, 50 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 19:36:17,801 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 60 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 19:36:17,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-03-17 19:36:17,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-03-17 19:36:17,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-17 19:36:17,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2022-03-17 19:36:17,828 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 19 [2022-03-17 19:36:17,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:36:17,828 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2022-03-17 19:36:17,829 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 19:36:17,829 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2022-03-17 19:36:17,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-17 19:36:17,829 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:36:17,830 INFO L500 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:36:17,830 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 19:36:17,830 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 19:36:17,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:36:17,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1598286936, now seen corresponding path program 1 times [2022-03-17 19:36:17,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:36:17,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217054875] [2022-03-17 19:36:17,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:36:17,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:36:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:36:17,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:36:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:36:17,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 19:36:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:36:17,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:36:17,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:36:17,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217054875] [2022-03-17 19:36:17,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217054875] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 19:36:17,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 19:36:17,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-17 19:36:17,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221029450] [2022-03-17 19:36:17,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 19:36:17,939 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-17 19:36:17,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:36:17,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-17 19:36:17,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-17 19:36:17,942 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-17 19:36:18,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:36:18,102 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2022-03-17 19:36:18,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 19:36:18,103 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-03-17 19:36:18,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:36:18,105 INFO L225 Difference]: With dead ends: 39 [2022-03-17 19:36:18,106 INFO L226 Difference]: Without dead ends: 37 [2022-03-17 19:36:18,112 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-17 19:36:18,116 INFO L912 BasicCegarLoop]: 22 mSDtfsCounter, 23 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 19:36:18,117 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 44 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 19:36:18,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-03-17 19:36:18,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2022-03-17 19:36:18,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.04) internal successors, (26), 26 states have internal predecessors, (26), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-17 19:36:18,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2022-03-17 19:36:18,129 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 24 [2022-03-17 19:36:18,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:36:18,129 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2022-03-17 19:36:18,129 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-17 19:36:18,129 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2022-03-17 19:36:18,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-17 19:36:18,130 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:36:18,130 INFO L500 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:36:18,130 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-17 19:36:18,131 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 19:36:18,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:36:18,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1081273981, now seen corresponding path program 1 times [2022-03-17 19:36:18,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:36:18,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650465223] [2022-03-17 19:36:18,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:36:18,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:36:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:36:18,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:36:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:36:18,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 19:36:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:36:18,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 19:36:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:36:18,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-17 19:36:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:36:18,319 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-17 19:36:18,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:36:18,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650465223] [2022-03-17 19:36:18,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650465223] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 19:36:18,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187974801] [2022-03-17 19:36:18,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:36:18,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 19:36:18,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 19:36:18,323 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) [2022-03-17 19:36:18,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-17 19:36:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:36:18,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-17 19:36:18,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 19:36:18,687 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-17 19:36:18,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 19:36:18,936 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-17 19:36:18,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187974801] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 19:36:18,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-17 19:36:18,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 19 [2022-03-17 19:36:18,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965704095] [2022-03-17 19:36:18,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-17 19:36:18,940 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-17 19:36:18,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:36:18,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-17 19:36:18,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-03-17 19:36:18,943 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 19 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 16 states have internal predecessors, (35), 5 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-03-17 19:36:19,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:36:19,285 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2022-03-17 19:36:19,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-17 19:36:19,285 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 16 states have internal predecessors, (35), 5 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 37 [2022-03-17 19:36:19,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:36:19,286 INFO L225 Difference]: With dead ends: 53 [2022-03-17 19:36:19,287 INFO L226 Difference]: Without dead ends: 51 [2022-03-17 19:36:19,287 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 71 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=755, Unknown=0, NotChecked=0, Total=930 [2022-03-17 19:36:19,288 INFO L912 BasicCegarLoop]: 23 mSDtfsCounter, 38 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 19:36:19,288 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 65 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 19:36:19,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-03-17 19:36:19,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2022-03-17 19:36:19,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-03-17 19:36:19,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2022-03-17 19:36:19,299 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 37 [2022-03-17 19:36:19,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:36:19,299 INFO L478 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2022-03-17 19:36:19,299 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 16 states have internal predecessors, (35), 5 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-03-17 19:36:19,299 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2022-03-17 19:36:19,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-17 19:36:19,301 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:36:19,301 INFO L500 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:36:19,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-17 19:36:19,524 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 19:36:19,525 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 19:36:19,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:36:19,525 INFO L85 PathProgramCache]: Analyzing trace with hash 59588189, now seen corresponding path program 2 times [2022-03-17 19:36:19,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:36:19,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502746439] [2022-03-17 19:36:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:36:19,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:36:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:36:19,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:36:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:36:19,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 19:36:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:36:19,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 19:36:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:36:19,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-17 19:36:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:36:19,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-17 19:36:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:36:19,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-17 19:36:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:36:19,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-17 19:36:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:36:19,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-17 19:36:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:36:19,705 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-03-17 19:36:19,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:36:19,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502746439] [2022-03-17 19:36:19,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502746439] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 19:36:19,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140631826] [2022-03-17 19:36:19,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-17 19:36:19,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 19:36:19,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 19:36:19,708 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) [2022-03-17 19:36:19,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-17 19:36:19,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-17 19:36:19,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-17 19:36:19,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-17 19:36:19,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 19:36:20,148 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-03-17 19:36:20,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 19:36:20,488 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-03-17 19:36:20,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140631826] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 19:36:20,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-17 19:36:20,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 28 [2022-03-17 19:36:20,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354759091] [2022-03-17 19:36:20,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-17 19:36:20,495 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-17 19:36:20,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:36:20,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-17 19:36:20,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2022-03-17 19:36:20,500 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 28 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 25 states have internal predecessors, (50), 10 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2022-03-17 19:36:21,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:36:21,036 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2022-03-17 19:36:21,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-17 19:36:21,037 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 25 states have internal predecessors, (50), 10 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) Word has length 63 [2022-03-17 19:36:21,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:36:21,037 INFO L225 Difference]: With dead ends: 56 [2022-03-17 19:36:21,038 INFO L226 Difference]: Without dead ends: 0 [2022-03-17 19:36:21,039 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=396, Invalid=1674, Unknown=0, NotChecked=0, Total=2070 [2022-03-17 19:36:21,040 INFO L912 BasicCegarLoop]: 25 mSDtfsCounter, 46 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-17 19:36:21,040 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 92 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-17 19:36:21,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-17 19:36:21,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-17 19:36:21,041 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) [2022-03-17 19:36:21,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-17 19:36:21,041 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2022-03-17 19:36:21,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:36:21,041 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-17 19:36:21,041 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 25 states have internal predecessors, (50), 10 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2022-03-17 19:36:21,041 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-17 19:36:21,042 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-17 19:36:21,044 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-17 19:36:21,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-17 19:36:21,244 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-03-17 19:36:21,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-17 19:36:21,327 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-17 19:36:21,327 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-17 19:36:21,327 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-17 19:36:21,327 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-17 19:36:21,327 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-17 19:36:21,327 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-17 19:36:21,327 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-17 19:36:21,328 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 24 56) the Hoare annotation is: true [2022-03-17 19:36:21,328 INFO L882 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2022-03-17 19:36:21,328 INFO L885 garLoopResultBuilder]: At program point L54(lines 24 56) the Hoare annotation is: true [2022-03-17 19:36:21,328 INFO L882 garLoopResultBuilder]: For program point L36(line 36) no Hoare annotation was computed. [2022-03-17 19:36:21,328 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 24 56) no Hoare annotation was computed. [2022-03-17 19:36:21,328 INFO L882 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2022-03-17 19:36:21,328 INFO L882 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2022-03-17 19:36:21,328 INFO L882 garLoopResultBuilder]: For program point L38-1(lines 25 56) no Hoare annotation was computed. [2022-03-17 19:36:21,328 INFO L882 garLoopResultBuilder]: For program point L39(lines 25 56) no Hoare annotation was computed. [2022-03-17 19:36:21,328 INFO L882 garLoopResultBuilder]: For program point L40(lines 25 56) no Hoare annotation was computed. [2022-03-17 19:36:21,328 INFO L882 garLoopResultBuilder]: For program point L47(lines 47 48) no Hoare annotation was computed. [2022-03-17 19:36:21,328 INFO L878 garLoopResultBuilder]: At program point L49-3(lines 49 53) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* main_~i~0 2))) (<= 1 main_~p~0) (<= 1 main_~leader_len~0)) [2022-03-17 19:36:21,329 INFO L878 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* main_~i~0 2))) (<= 1 main_~p~0) (<= (+ main_~p~0 2) main_~bufsize_0~0) (<= 1 main_~leader_len~0)) [2022-03-17 19:36:21,329 INFO L878 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* main_~i~0 2))) (<= 1 main_~p~0) (<= (+ main_~p~0 2) main_~bufsize_0~0) (<= 1 main_~leader_len~0)) [2022-03-17 19:36:21,329 INFO L882 garLoopResultBuilder]: For program point L51(line 51) no Hoare annotation was computed. [2022-03-17 19:36:21,329 INFO L882 garLoopResultBuilder]: For program point L49-2(lines 49 53) no Hoare annotation was computed. [2022-03-17 19:36:21,329 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2022-03-17 19:36:21,329 INFO L882 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2022-03-17 19:36:21,329 INFO L882 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2022-03-17 19:36:21,329 INFO L882 garLoopResultBuilder]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2022-03-17 19:36:21,329 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-03-17 19:36:21,329 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2022-03-17 19:36:21,332 INFO L718 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-03-17 19:36:21,333 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-17 19:36:21,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 07:36:21 BasicIcfg [2022-03-17 19:36:21,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-17 19:36:21,346 INFO L158 Benchmark]: Toolchain (without parser) took 4738.92ms. Allocated memory was 185.6MB in the beginning and 244.3MB in the end (delta: 58.7MB). Free memory was 129.6MB in the beginning and 116.4MB in the end (delta: 13.1MB). Peak memory consumption was 73.3MB. Max. memory is 8.0GB. [2022-03-17 19:36:21,346 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 185.6MB. Free memory is still 145.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 19:36:21,347 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.07ms. Allocated memory was 185.6MB in the beginning and 244.3MB in the end (delta: 58.7MB). Free memory was 129.3MB in the beginning and 215.0MB in the end (delta: -85.7MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. [2022-03-17 19:36:21,347 INFO L158 Benchmark]: Boogie Preprocessor took 28.97ms. Allocated memory is still 244.3MB. Free memory was 215.0MB in the beginning and 213.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-17 19:36:21,347 INFO L158 Benchmark]: RCFGBuilder took 241.25ms. Allocated memory is still 244.3MB. Free memory was 213.4MB in the beginning and 202.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-17 19:36:21,347 INFO L158 Benchmark]: IcfgTransformer took 20.06ms. Allocated memory is still 244.3MB. Free memory was 202.5MB in the beginning and 200.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-17 19:36:21,348 INFO L158 Benchmark]: TraceAbstraction took 4143.99ms. Allocated memory is still 244.3MB. Free memory was 200.4MB in the beginning and 116.4MB in the end (delta: 84.0MB). Peak memory consumption was 85.4MB. Max. memory is 8.0GB. [2022-03-17 19:36:21,350 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 185.6MB. Free memory is still 145.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 299.07ms. Allocated memory was 185.6MB in the beginning and 244.3MB in the end (delta: 58.7MB). Free memory was 129.3MB in the beginning and 215.0MB in the end (delta: -85.7MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.97ms. Allocated memory is still 244.3MB. Free memory was 215.0MB in the beginning and 213.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 241.25ms. Allocated memory is still 244.3MB. Free memory was 213.4MB in the beginning and 202.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 20.06ms. Allocated memory is still 244.3MB. Free memory was 202.5MB in the beginning and 200.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 4143.99ms. Allocated memory is still 244.3MB. Free memory was 200.4MB in the beginning and 116.4MB in the end (delta: 84.0MB). Peak memory consumption was 85.4MB. 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: 19]: 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 4 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.1s, OverallIterations: 4, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 161 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 157 mSDsluCounter, 261 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 158 mSDsCounter, 158 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 978 IncrementalHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 158 mSolverCounterUnsat, 103 mSDtfsCounter, 978 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 303 GetRequests, 204 SyntacticMatches, 6 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=3, InterpolantAutomatonStates: 52, 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 20 PreInvPairs, 38 NumberOfFragments, 76 HoareAnnotationTreeSize, 20 FomulaSimplifications, 14 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 290 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 243 NumberOfCodeBlocks, 243 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 335 ConstructedInterpolants, 0 QuantifiedInterpolants, 1211 SizeOfPredicates, 16 NumberOfNonLiveVariables, 262 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 357/431 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: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (p + 2 * ielen <= bufsize_0 + i * 2 && 1 <= p) && 1 <= leader_len RESULT: Ultimate proved your program to be correct! [2022-03-17 19:36:21,391 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...