/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-5d317bd [2022-03-18 21:53:22,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 21:53:22,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 21:53:22,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 21:53:22,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 21:53:22,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 21:53:22,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 21:53:22,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 21:53:22,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 21:53:22,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 21:53:22,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 21:53:22,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 21:53:22,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 21:53:22,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 21:53:22,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 21:53:22,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 21:53:22,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 21:53:22,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 21:53:22,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 21:53:22,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 21:53:22,363 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 21:53:22,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 21:53:22,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 21:53:22,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 21:53:22,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 21:53:22,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-18 21:53:22,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 21:53:22,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 21:53:22,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 21:53:22,378 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-18 21:53:22,401 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 21:53:22,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 21:53:22,403 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-18 21:53:22,403 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-18 21:53:22,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-18 21:53:22,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-18 21:53:22,404 INFO L138 SettingsManager]: * Use SBE=true [2022-03-18 21:53:22,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 21:53:22,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 21:53:22,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 21:53:22,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 21:53:22,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 21:53:22,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 21:53:22,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 21:53:22,405 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 21:53:22,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 21:53:22,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 21:53:22,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 21:53:22,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 21:53:22,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 21:53:22,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 21:53:22,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-18 21:53:22,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-18 21:53:22,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 21:53:22,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-18 21:53:22,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 21:53:22,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-18 21:53:22,406 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-18 21:53:22,406 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-18 21:53:22,407 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 21:53:22,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 21:53:22,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 21:53:22,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 21:53:22,609 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 21:53:22,610 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 21:53:22,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2022-03-18 21:53:22,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60291f155/5c9a1928075041a9a21f76d7f1d7142a/FLAG4a172a732 [2022-03-18 21:53:23,020 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 21:53:23,020 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2022-03-18 21:53:23,024 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60291f155/5c9a1928075041a9a21f76d7f1d7142a/FLAG4a172a732 [2022-03-18 21:53:23,032 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60291f155/5c9a1928075041a9a21f76d7f1d7142a [2022-03-18 21:53:23,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 21:53:23,034 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-18 21:53:23,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 21:53:23,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 21:53:23,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 21:53:23,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 09:53:23" (1/1) ... [2022-03-18 21:53:23,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@91a306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:53:23, skipping insertion in model container [2022-03-18 21:53:23,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 09:53:23" (1/1) ... [2022-03-18 21:53:23,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 21:53:23,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 21:53:23,183 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] [2022-03-18 21:53:23,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 21:53:23,205 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 21:53:23,213 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] [2022-03-18 21:53:23,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 21:53:23,224 INFO L208 MainTranslator]: Completed translation [2022-03-18 21:53:23,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:53:23 WrapperNode [2022-03-18 21:53:23,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 21:53:23,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 21:53:23,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 21:53:23,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 21:53:23,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:53:23" (1/1) ... [2022-03-18 21:53:23,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:53:23" (1/1) ... [2022-03-18 21:53:23,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:53:23" (1/1) ... [2022-03-18 21:53:23,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:53:23" (1/1) ... [2022-03-18 21:53:23,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:53:23" (1/1) ... [2022-03-18 21:53:23,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:53:23" (1/1) ... [2022-03-18 21:53:23,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:53:23" (1/1) ... [2022-03-18 21:53:23,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 21:53:23,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 21:53:23,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 21:53:23,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 21:53:23,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:53:23" (1/1) ... [2022-03-18 21:53:23,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 21:53:23,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 21:53:23,270 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) [2022-03-18 21:53:23,272 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 [2022-03-18 21:53:23,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 21:53:23,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 21:53:23,298 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 21:53:23,298 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 21:53:23,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 21:53:23,299 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 21:53:23,299 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 21:53:23,300 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 21:53:23,301 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-18 21:53:23,301 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-18 21:53:23,301 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 21:53:23,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 21:53:23,301 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 21:53:23,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 21:53:23,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 21:53:23,302 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 21:53:23,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 21:53:23,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 21:53:23,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 21:53:23,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 21:53:23,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 21:53:23,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 21:53:23,374 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 21:53:23,375 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 21:53:23,496 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 21:53:23,501 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 21:53:23,501 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 21:53:23,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 09:53:23 BoogieIcfgContainer [2022-03-18 21:53:23,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 21:53:23,503 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-18 21:53:23,503 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-18 21:53:23,504 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-18 21:53:23,506 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 09:53:23" (1/1) ... [2022-03-18 21:53:23,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 09:53:23 BasicIcfg [2022-03-18 21:53:23,517 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-18 21:53:23,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 21:53:23,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 21:53:23,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 21:53:23,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 09:53:23" (1/4) ... [2022-03-18 21:53:23,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b652b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 09:53:23, skipping insertion in model container [2022-03-18 21:53:23,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:53:23" (2/4) ... [2022-03-18 21:53:23,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b652b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 09:53:23, skipping insertion in model container [2022-03-18 21:53:23,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 09:53:23" (3/4) ... [2022-03-18 21:53:23,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b652b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 09:53:23, skipping insertion in model container [2022-03-18 21:53:23,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 09:53:23" (4/4) ... [2022-03-18 21:53:23,522 INFO L111 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok.iqvasr [2022-03-18 21:53:23,526 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-18 21:53:23,526 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 21:53:23,555 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 21:53:23,559 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 [2022-03-18 21:53:23,559 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 21:53:23,570 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) [2022-03-18 21:53:23,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-18 21:53:23,574 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:53:23,574 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:53:23,574 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:53:23,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:53:23,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1231819666, now seen corresponding path program 1 times [2022-03-18 21:53:23,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:53:23,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015963263] [2022-03-18 21:53:23,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:53:23,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:53:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:53:23,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:53:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:53:23,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:53:23,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:53:23,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015963263] [2022-03-18 21:53:23,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015963263] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:53:23,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:53:23,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 21:53:23,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379430151] [2022-03-18 21:53:23,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:53:23,797 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 21:53:23,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:53:23,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 21:53:23,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-18 21:53:23,819 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) [2022-03-18 21:53:23,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:53:23,996 INFO L93 Difference]: Finished difference Result 52 states and 68 transitions. [2022-03-18 21:53:23,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 21:53:23,999 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 [2022-03-18 21:53:23,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:53:24,007 INFO L225 Difference]: With dead ends: 52 [2022-03-18 21:53:24,007 INFO L226 Difference]: Without dead ends: 29 [2022-03-18 21:53:24,010 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 [2022-03-18 21:53:24,013 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 [2022-03-18 21:53:24,013 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] [2022-03-18 21:53:24,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-03-18 21:53:24,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-03-18 21:53:24,042 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) [2022-03-18 21:53:24,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2022-03-18 21:53:24,044 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 19 [2022-03-18 21:53:24,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:53:24,044 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2022-03-18 21:53:24,046 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) [2022-03-18 21:53:24,046 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2022-03-18 21:53:24,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-18 21:53:24,047 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:53:24,047 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] [2022-03-18 21:53:24,048 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 21:53:24,048 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:53:24,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:53:24,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1598286936, now seen corresponding path program 1 times [2022-03-18 21:53:24,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:53:24,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527725660] [2022-03-18 21:53:24,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:53:24,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:53:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:53:24,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:53:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:53:24,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:53:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:53:24,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:53:24,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:53:24,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527725660] [2022-03-18 21:53:24,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527725660] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:53:24,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:53:24,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 21:53:24,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301103727] [2022-03-18 21:53:24,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:53:24,145 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 21:53:24,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:53:24,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 21:53:24,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-18 21:53:24,146 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) [2022-03-18 21:53:24,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:53:24,264 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2022-03-18 21:53:24,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 21:53:24,265 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 [2022-03-18 21:53:24,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:53:24,267 INFO L225 Difference]: With dead ends: 39 [2022-03-18 21:53:24,267 INFO L226 Difference]: Without dead ends: 37 [2022-03-18 21:53:24,272 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:53:24,276 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 [2022-03-18 21:53:24,276 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] [2022-03-18 21:53:24,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-03-18 21:53:24,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2022-03-18 21:53:24,285 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) [2022-03-18 21:53:24,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2022-03-18 21:53:24,286 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 24 [2022-03-18 21:53:24,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:53:24,286 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2022-03-18 21:53:24,286 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) [2022-03-18 21:53:24,286 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2022-03-18 21:53:24,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-18 21:53:24,287 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:53:24,287 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] [2022-03-18 21:53:24,287 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 21:53:24,287 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:53:24,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:53:24,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1081273981, now seen corresponding path program 1 times [2022-03-18 21:53:24,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:53:24,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370323491] [2022-03-18 21:53:24,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:53:24,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:53:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:53:24,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:53:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:53:24,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:53:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:53:24,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 21:53:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:53:24,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 21:53:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:53:24,459 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 21:53:24,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:53:24,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370323491] [2022-03-18 21:53:24,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370323491] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 21:53:24,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877641028] [2022-03-18 21:53:24,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:53:24,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 21:53:24,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 21:53:24,462 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) [2022-03-18 21:53:24,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 21:53:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:53:24,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-18 21:53:24,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 21:53:24,750 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 21:53:24,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 21:53:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 21:53:24,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877641028] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 21:53:24,941 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 21:53:24,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 19 [2022-03-18 21:53:24,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156964121] [2022-03-18 21:53:24,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 21:53:24,942 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-18 21:53:24,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:53:24,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-18 21:53:24,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-03-18 21:53:24,943 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) [2022-03-18 21:53:25,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:53:25,228 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2022-03-18 21:53:25,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 21:53:25,229 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 [2022-03-18 21:53:25,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:53:25,230 INFO L225 Difference]: With dead ends: 53 [2022-03-18 21:53:25,230 INFO L226 Difference]: Without dead ends: 51 [2022-03-18 21:53:25,230 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 [2022-03-18 21:53:25,231 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, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 21:53:25,231 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 65 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 21:53:25,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-03-18 21:53:25,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2022-03-18 21:53:25,237 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) [2022-03-18 21:53:25,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2022-03-18 21:53:25,238 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 37 [2022-03-18 21:53:25,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:53:25,238 INFO L478 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2022-03-18 21:53:25,239 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) [2022-03-18 21:53:25,239 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2022-03-18 21:53:25,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-18 21:53:25,240 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:53:25,240 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] [2022-03-18 21:53:25,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-18 21:53:25,457 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 [2022-03-18 21:53:25,458 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:53:25,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:53:25,458 INFO L85 PathProgramCache]: Analyzing trace with hash 59588189, now seen corresponding path program 2 times [2022-03-18 21:53:25,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:53:25,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788557728] [2022-03-18 21:53:25,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:53:25,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:53:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:53:25,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:53:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:53:25,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:53:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:53:25,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 21:53:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:53:25,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 21:53:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:53:25,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-18 21:53:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:53:25,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-18 21:53:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:53:25,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-18 21:53:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:53:25,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-18 21:53:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:53:25,615 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-03-18 21:53:25,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:53:25,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788557728] [2022-03-18 21:53:25,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788557728] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 21:53:25,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342580375] [2022-03-18 21:53:25,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 21:53:25,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 21:53:25,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 21:53:25,616 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) [2022-03-18 21:53:25,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 21:53:25,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 21:53:25,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 21:53:25,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-18 21:53:25,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 21:53:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-03-18 21:53:25,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 21:53:26,189 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-03-18 21:53:26,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342580375] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 21:53:26,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 21:53:26,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 28 [2022-03-18 21:53:26,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397444146] [2022-03-18 21:53:26,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 21:53:26,190 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-18 21:53:26,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:53:26,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-18 21:53:26,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2022-03-18 21:53:26,191 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) [2022-03-18 21:53:26,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:53:26,666 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2022-03-18 21:53:26,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-18 21:53:26,666 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 [2022-03-18 21:53:26,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:53:26,667 INFO L225 Difference]: With dead ends: 56 [2022-03-18 21:53:26,667 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 21:53:26,668 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=396, Invalid=1674, Unknown=0, NotChecked=0, Total=2070 [2022-03-18 21:53:26,668 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, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 21:53:26,668 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 92 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 21:53:26,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 21:53:26,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 21:53:26,669 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) [2022-03-18 21:53:26,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 21:53:26,669 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2022-03-18 21:53:26,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:53:26,669 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 21:53:26,670 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) [2022-03-18 21:53:26,670 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 21:53:26,670 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 21:53:26,672 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 21:53:26,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 21:53:26,879 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 [2022-03-18 21:53:26,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-18 21:53:26,947 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|)) [2022-03-18 21:53:26,947 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-18 21:53:26,947 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-18 21:53:26,947 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-18 21:53:26,947 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-18 21:53:26,947 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-18 21:53:26,947 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-18 21:53:26,947 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 24 56) the Hoare annotation is: true [2022-03-18 21:53:26,947 INFO L882 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2022-03-18 21:53:26,947 INFO L885 garLoopResultBuilder]: At program point L54(lines 24 56) the Hoare annotation is: true [2022-03-18 21:53:26,948 INFO L882 garLoopResultBuilder]: For program point L36(line 36) no Hoare annotation was computed. [2022-03-18 21:53:26,948 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 24 56) no Hoare annotation was computed. [2022-03-18 21:53:26,948 INFO L882 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2022-03-18 21:53:26,948 INFO L882 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2022-03-18 21:53:26,948 INFO L882 garLoopResultBuilder]: For program point L38-1(lines 25 56) no Hoare annotation was computed. [2022-03-18 21:53:26,948 INFO L882 garLoopResultBuilder]: For program point L39(lines 25 56) no Hoare annotation was computed. [2022-03-18 21:53:26,948 INFO L882 garLoopResultBuilder]: For program point L40(lines 25 56) no Hoare annotation was computed. [2022-03-18 21:53:26,948 INFO L882 garLoopResultBuilder]: For program point L47(lines 47 48) no Hoare annotation was computed. [2022-03-18 21:53:26,948 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)) [2022-03-18 21:53:26,948 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)) [2022-03-18 21:53:26,948 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)) [2022-03-18 21:53:26,948 INFO L882 garLoopResultBuilder]: For program point L51(line 51) no Hoare annotation was computed. [2022-03-18 21:53:26,948 INFO L882 garLoopResultBuilder]: For program point L49-2(lines 49 53) no Hoare annotation was computed. [2022-03-18 21:53:26,949 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2022-03-18 21:53:26,949 INFO L882 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2022-03-18 21:53:26,949 INFO L882 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2022-03-18 21:53:26,949 INFO L882 garLoopResultBuilder]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2022-03-18 21:53:26,949 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-03-18 21:53:26,949 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2022-03-18 21:53:26,951 INFO L718 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-03-18 21:53:26,952 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 21:53:26,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 09:53:26 BasicIcfg [2022-03-18 21:53:26,961 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 21:53:26,961 INFO L158 Benchmark]: Toolchain (without parser) took 3927.24ms. Allocated memory was 230.7MB in the beginning and 424.7MB in the end (delta: 194.0MB). Free memory was 201.4MB in the beginning and 359.1MB in the end (delta: -157.8MB). Peak memory consumption was 35.8MB. Max. memory is 8.0GB. [2022-03-18 21:53:26,962 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 230.7MB. Free memory is still 187.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 21:53:26,962 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.43ms. Allocated memory was 230.7MB in the beginning and 424.7MB in the end (delta: 194.0MB). Free memory was 201.4MB in the beginning and 394.2MB in the end (delta: -192.9MB). Peak memory consumption was 8.0MB. Max. memory is 8.0GB. [2022-03-18 21:53:26,962 INFO L158 Benchmark]: Boogie Preprocessor took 20.49ms. Allocated memory is still 424.7MB. Free memory was 394.2MB in the beginning and 392.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-18 21:53:26,962 INFO L158 Benchmark]: RCFGBuilder took 256.24ms. Allocated memory is still 424.7MB. Free memory was 392.7MB in the beginning and 381.2MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-18 21:53:26,963 INFO L158 Benchmark]: IcfgTransformer took 14.47ms. Allocated memory is still 424.7MB. Free memory was 381.2MB in the beginning and 379.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 21:53:26,963 INFO L158 Benchmark]: TraceAbstraction took 3442.55ms. Allocated memory is still 424.7MB. Free memory was 379.1MB in the beginning and 359.1MB in the end (delta: 20.0MB). Peak memory consumption was 20.4MB. Max. memory is 8.0GB. [2022-03-18 21:53:26,982 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 230.7MB. Free memory is still 187.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 189.43ms. Allocated memory was 230.7MB in the beginning and 424.7MB in the end (delta: 194.0MB). Free memory was 201.4MB in the beginning and 394.2MB in the end (delta: -192.9MB). Peak memory consumption was 8.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.49ms. Allocated memory is still 424.7MB. Free memory was 394.2MB in the beginning and 392.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 256.24ms. Allocated memory is still 424.7MB. Free memory was 392.7MB in the beginning and 381.2MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 14.47ms. Allocated memory is still 424.7MB. Free memory was 381.2MB in the beginning and 379.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 3442.55ms. Allocated memory is still 424.7MB. Free memory was 379.1MB in the beginning and 359.1MB in the end (delta: 20.0MB). Peak memory consumption was 20.4MB. 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: 3.4s, OverallIterations: 4, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 161 SdHoareTripleChecker+Valid, 0.6s 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, 0.8s 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, 1.4s 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! [2022-03-18 21:53:27,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...