/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loop-zilu/benchmark32_linear.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-07 23:32:08,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-07 23:32:08,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-07 23:32:08,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-07 23:32:08,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-07 23:32:08,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-07 23:32:08,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-07 23:32:08,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-07 23:32:08,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-07 23:32:08,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-07 23:32:08,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-07 23:32:08,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-07 23:32:08,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-07 23:32:08,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-07 23:32:08,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-07 23:32:08,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-07 23:32:08,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-07 23:32:08,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-07 23:32:08,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-07 23:32:08,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-07 23:32:08,575 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-07 23:32:08,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-07 23:32:08,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-07 23:32:08,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-07 23:32:08,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-07 23:32:08,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-07 23:32:08,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-07 23:32:08,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-07 23:32:08,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-07 23:32:08,592 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-07 23:32:08,615 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-07 23:32:08,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-07 23:32:08,616 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-07 23:32:08,616 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-07 23:32:08,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-07 23:32:08,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-07 23:32:08,617 INFO L138 SettingsManager]: * Use SBE=true [2022-04-07 23:32:08,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-07 23:32:08,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-07 23:32:08,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-07 23:32:08,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-07 23:32:08,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-07 23:32:08,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-07 23:32:08,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-07 23:32:08,618 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-07 23:32:08,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-07 23:32:08,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-07 23:32:08,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-07 23:32:08,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-07 23:32:08,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 23:32:08,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-07 23:32:08,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-07 23:32:08,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-07 23:32:08,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-07 23:32:08,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-07 23:32:08,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-07 23:32:08,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-07 23:32:08,620 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-07 23:32:08,621 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-07 23:32:08,621 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-07 23:32:08,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-07 23:32:08,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-07 23:32:08,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-07 23:32:08,804 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-07 23:32:08,805 INFO L275 PluginConnector]: CDTParser initialized [2022-04-07 23:32:08,806 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark32_linear.i [2022-04-07 23:32:08,872 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4005c3e22/8fff0e58a9464786a3ee3cbe79433386/FLAG7f400287c [2022-04-07 23:32:09,224 INFO L306 CDTParser]: Found 1 translation units. [2022-04-07 23:32:09,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark32_linear.i [2022-04-07 23:32:09,228 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4005c3e22/8fff0e58a9464786a3ee3cbe79433386/FLAG7f400287c [2022-04-07 23:32:09,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4005c3e22/8fff0e58a9464786a3ee3cbe79433386 [2022-04-07 23:32:09,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-07 23:32:09,239 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-07 23:32:09,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-07 23:32:09,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-07 23:32:09,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-07 23:32:09,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 11:32:09" (1/1) ... [2022-04-07 23:32:09,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a54a947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 11:32:09, skipping insertion in model container [2022-04-07 23:32:09,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 11:32:09" (1/1) ... [2022-04-07 23:32:09,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-07 23:32:09,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-07 23:32:09,357 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-zilu/benchmark32_linear.i[868,881] [2022-04-07 23:32:09,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 23:32:09,375 INFO L203 MainTranslator]: Completed pre-run [2022-04-07 23:32:09,383 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-zilu/benchmark32_linear.i[868,881] [2022-04-07 23:32:09,387 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 23:32:09,396 INFO L208 MainTranslator]: Completed translation [2022-04-07 23:32:09,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 11:32:09 WrapperNode [2022-04-07 23:32:09,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-07 23:32:09,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-07 23:32:09,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-07 23:32:09,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-07 23:32:09,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 11:32:09" (1/1) ... [2022-04-07 23:32:09,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 11:32:09" (1/1) ... [2022-04-07 23:32:09,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 11:32:09" (1/1) ... [2022-04-07 23:32:09,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 11:32:09" (1/1) ... [2022-04-07 23:32:09,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 11:32:09" (1/1) ... [2022-04-07 23:32:09,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 11:32:09" (1/1) ... [2022-04-07 23:32:09,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 11:32:09" (1/1) ... [2022-04-07 23:32:09,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-07 23:32:09,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-07 23:32:09,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-07 23:32:09,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-07 23:32:09,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 11:32:09" (1/1) ... [2022-04-07 23:32:09,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 23:32:09,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 23:32:09,443 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-07 23:32:09,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-07 23:32:09,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-07 23:32:09,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-07 23:32:09,475 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-07 23:32:09,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-07 23:32:09,475 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-07 23:32:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-07 23:32:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-07 23:32:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-07 23:32:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-07 23:32:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-07 23:32:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-07 23:32:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-04-07 23:32:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-07 23:32:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-07 23:32:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-07 23:32:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-07 23:32:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-07 23:32:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-07 23:32:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-07 23:32:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-07 23:32:09,522 INFO L234 CfgBuilder]: Building ICFG [2022-04-07 23:32:09,523 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-07 23:32:09,616 INFO L275 CfgBuilder]: Performing block encoding [2022-04-07 23:32:09,620 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-07 23:32:09,620 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-07 23:32:09,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 11:32:09 BoogieIcfgContainer [2022-04-07 23:32:09,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-07 23:32:09,622 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-07 23:32:09,622 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-07 23:32:09,623 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-07 23:32:09,626 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 11:32:09" (1/1) ... [2022-04-07 23:32:09,628 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-07 23:32:09,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 07.04 11:32:09 BasicIcfg [2022-04-07 23:32:09,639 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-07 23:32:09,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-07 23:32:09,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-07 23:32:09,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-07 23:32:09,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.04 11:32:09" (1/4) ... [2022-04-07 23:32:09,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dcae2ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 11:32:09, skipping insertion in model container [2022-04-07 23:32:09,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 11:32:09" (2/4) ... [2022-04-07 23:32:09,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dcae2ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 11:32:09, skipping insertion in model container [2022-04-07 23:32:09,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 11:32:09" (3/4) ... [2022-04-07 23:32:09,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dcae2ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.04 11:32:09, skipping insertion in model container [2022-04-07 23:32:09,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 07.04 11:32:09" (4/4) ... [2022-04-07 23:32:09,644 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark32_linear.iqvasr [2022-04-07 23:32:09,647 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-07 23:32:09,647 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-07 23:32:09,672 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-07 23:32:09,676 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 [2022-04-07 23:32:09,677 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-07 23:32:09,692 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-07 23:32:09,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-07 23:32:09,695 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 23:32:09,695 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 23:32:09,695 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 23:32:09,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 23:32:09,714 INFO L85 PathProgramCache]: Analyzing trace with hash 627940001, now seen corresponding path program 1 times [2022-04-07 23:32:09,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 23:32:09,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942496444] [2022-04-07 23:32:09,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 23:32:09,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 23:32:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 23:32:09,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 23:32:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 23:32:09,911 INFO L290 TraceCheckUtils]: 0: Hoare triple {30#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [61] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= (select |v_#length_1| 2) 21) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {25#true} is VALID [2022-04-07 23:32:09,912 INFO L290 TraceCheckUtils]: 1: Hoare triple {25#true} [64] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-07 23:32:09,912 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {25#true} {25#true} [83] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-07 23:32:09,914 INFO L272 TraceCheckUtils]: 0: Hoare triple {25#true} [59] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {30#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-07 23:32:09,915 INFO L290 TraceCheckUtils]: 1: Hoare triple {30#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [61] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= (select |v_#length_1| 2) 21) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {25#true} is VALID [2022-04-07 23:32:09,915 INFO L290 TraceCheckUtils]: 2: Hoare triple {25#true} [64] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-07 23:32:09,915 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {25#true} {25#true} [83] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-07 23:32:09,915 INFO L272 TraceCheckUtils]: 4: Hoare triple {25#true} [60] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-07 23:32:09,916 INFO L290 TraceCheckUtils]: 5: Hoare triple {25#true} [63] mainENTRY-->L21: Formula: (and (= v_main_~x~0_2 |v_main_#t~nondet1_2|) (<= |v_main_#t~nondet1_2| 2147483647) (<= 0 (+ |v_main_#t~nondet1_2| 2147483648))) InVars {main_#t~nondet1=|v_main_#t~nondet1_2|} OutVars{main_~x~0=v_main_~x~0_2} AuxVars[] AssignedVars[main_~x~0, main_#t~nondet1] {25#true} is VALID [2022-04-07 23:32:09,916 INFO L290 TraceCheckUtils]: 6: Hoare triple {25#true} [66] L21-->L24-2: Formula: (or (= v_main_~x~0_4 1) (= v_main_~x~0_4 2)) InVars {main_~x~0=v_main_~x~0_4} OutVars{main_~x~0=v_main_~x~0_4} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-07 23:32:09,917 INFO L290 TraceCheckUtils]: 7: Hoare triple {25#true} [68] L24-2-->L22-2: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] {26#false} is VALID [2022-04-07 23:32:09,918 INFO L272 TraceCheckUtils]: 8: Hoare triple {26#false} [71] L22-2-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (<= v_main_~x~0_11 8) 1 0)) InVars {main_~x~0=v_main_~x~0_11} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0] {26#false} is VALID [2022-04-07 23:32:09,918 INFO L290 TraceCheckUtils]: 9: Hoare triple {26#false} [75] __VERIFIER_assertENTRY-->L15: Formula: (= v___VERIFIER_assert_~cond_2 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {26#false} is VALID [2022-04-07 23:32:09,918 INFO L290 TraceCheckUtils]: 10: Hoare triple {26#false} [78] L15-->L16: Formula: (= v___VERIFIER_assert_~cond_3 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[] {26#false} is VALID [2022-04-07 23:32:09,918 INFO L290 TraceCheckUtils]: 11: Hoare triple {26#false} [80] L16-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {26#false} is VALID [2022-04-07 23:32:09,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 23:32:09,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 23:32:09,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942496444] [2022-04-07 23:32:09,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942496444] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 23:32:09,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 23:32:09,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 23:32:09,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407567037] [2022-04-07 23:32:09,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 23:32:09,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 12 [2022-04-07 23:32:09,929 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-07 23:32:09,931 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-04-07 23:32:09,947 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 23:32:09,947 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 23:32:09,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-07 23:32:09,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 23:32:09,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-07 23:32:09,979 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-04-07 23:32:10,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 23:32:10,059 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2022-04-07 23:32:10,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 23:32:10,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 12 [2022-04-07 23:32:10,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 23:32:10,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-04-07 23:32:10,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2022-04-07 23:32:10,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-04-07 23:32:10,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2022-04-07 23:32:10,070 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 40 transitions. [2022-04-07 23:32:10,121 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 40 edges. 40 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 23:32:10,126 INFO L225 Difference]: With dead ends: 34 [2022-04-07 23:32:10,126 INFO L226 Difference]: Without dead ends: 15 [2022-04-07 23:32:10,128 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-07 23:32:10,136 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 23:32:10,136 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 27 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 23:32:10,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-04-07 23:32:10,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-04-07 23:32:10,155 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-07 23:32:10,155 INFO L82 GeneralOperation]: Start isEquivalent. First operand 15 states. Second operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 3 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) [2022-04-07 23:32:10,156 INFO L74 IsIncluded]: Start isIncluded. First operand 15 states. Second operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 3 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) [2022-04-07 23:32:10,156 INFO L87 Difference]: Start difference. First operand 15 states. Second operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 3 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) [2022-04-07 23:32:10,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 23:32:10,157 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2022-04-07 23:32:10,158 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-04-07 23:32:10,158 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 23:32:10,158 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 23:32:10,158 INFO L74 IsIncluded]: Start isIncluded. First operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 3 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) Second operand 15 states. [2022-04-07 23:32:10,158 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 3 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) Second operand 15 states. [2022-04-07 23:32:10,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 23:32:10,160 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2022-04-07 23:32:10,160 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-04-07 23:32:10,160 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 23:32:10,160 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 23:32:10,160 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-07 23:32:10,160 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-07 23:32:10,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 3 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) [2022-04-07 23:32:10,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-04-07 23:32:10,162 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2022-04-07 23:32:10,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 23:32:10,163 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-04-07 23:32:10,163 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-04-07 23:32:10,163 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-04-07 23:32:10,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-07 23:32:10,163 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 23:32:10,164 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 23:32:10,164 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-07 23:32:10,164 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 23:32:10,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 23:32:10,165 INFO L85 PathProgramCache]: Analyzing trace with hash 628863522, now seen corresponding path program 1 times [2022-04-07 23:32:10,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 23:32:10,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493246145] [2022-04-07 23:32:10,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 23:32:10,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 23:32:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 23:32:10,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 23:32:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 23:32:10,244 INFO L290 TraceCheckUtils]: 0: Hoare triple {136#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [61] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= (select |v_#length_1| 2) 21) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {128#true} is VALID [2022-04-07 23:32:10,244 INFO L290 TraceCheckUtils]: 1: Hoare triple {128#true} [64] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {128#true} is VALID [2022-04-07 23:32:10,244 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {128#true} {128#true} [83] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {128#true} is VALID [2022-04-07 23:32:10,245 INFO L272 TraceCheckUtils]: 0: Hoare triple {128#true} [59] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {136#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-07 23:32:10,245 INFO L290 TraceCheckUtils]: 1: Hoare triple {136#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [61] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= (select |v_#length_1| 2) 21) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {128#true} is VALID [2022-04-07 23:32:10,245 INFO L290 TraceCheckUtils]: 2: Hoare triple {128#true} [64] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {128#true} is VALID [2022-04-07 23:32:10,246 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {128#true} {128#true} [83] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {128#true} is VALID [2022-04-07 23:32:10,246 INFO L272 TraceCheckUtils]: 4: Hoare triple {128#true} [60] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {128#true} is VALID [2022-04-07 23:32:10,246 INFO L290 TraceCheckUtils]: 5: Hoare triple {128#true} [63] mainENTRY-->L21: Formula: (and (= v_main_~x~0_2 |v_main_#t~nondet1_2|) (<= |v_main_#t~nondet1_2| 2147483647) (<= 0 (+ |v_main_#t~nondet1_2| 2147483648))) InVars {main_#t~nondet1=|v_main_#t~nondet1_2|} OutVars{main_~x~0=v_main_~x~0_2} AuxVars[] AssignedVars[main_~x~0, main_#t~nondet1] {128#true} is VALID [2022-04-07 23:32:10,247 INFO L290 TraceCheckUtils]: 6: Hoare triple {128#true} [66] L21-->L24-2: Formula: (or (= v_main_~x~0_4 1) (= v_main_~x~0_4 2)) InVars {main_~x~0=v_main_~x~0_4} OutVars{main_~x~0=v_main_~x~0_4} AuxVars[] AssignedVars[] {133#(<= main_~x~0 2)} is VALID [2022-04-07 23:32:10,247 INFO L290 TraceCheckUtils]: 7: Hoare triple {133#(<= main_~x~0 2)} [69] L24-2-->L22-2: Formula: (= (mod |v_main_#t~nondet2_2| 256) 0) InVars {main_#t~nondet2=|v_main_#t~nondet2_2|} OutVars{} AuxVars[] AssignedVars[main_#t~nondet2] {133#(<= main_~x~0 2)} is VALID [2022-04-07 23:32:10,248 INFO L272 TraceCheckUtils]: 8: Hoare triple {133#(<= main_~x~0 2)} [71] L22-2-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (<= v_main_~x~0_11 8) 1 0)) InVars {main_~x~0=v_main_~x~0_11} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0] {134#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-07 23:32:10,248 INFO L290 TraceCheckUtils]: 9: Hoare triple {134#(not (= |__VERIFIER_assert_#in~cond| 0))} [75] __VERIFIER_assertENTRY-->L15: Formula: (= v___VERIFIER_assert_~cond_2 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {135#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-07 23:32:10,249 INFO L290 TraceCheckUtils]: 10: Hoare triple {135#(not (= __VERIFIER_assert_~cond 0))} [78] L15-->L16: Formula: (= v___VERIFIER_assert_~cond_3 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[] {129#false} is VALID [2022-04-07 23:32:10,249 INFO L290 TraceCheckUtils]: 11: Hoare triple {129#false} [80] L16-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {129#false} is VALID [2022-04-07 23:32:10,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 23:32:10,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 23:32:10,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493246145] [2022-04-07 23:32:10,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493246145] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 23:32:10,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 23:32:10,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 23:32:10,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598346177] [2022-04-07 23:32:10,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 23:32:10,251 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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 12 [2022-04-07 23:32:10,251 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-07 23:32:10,251 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-04-07 23:32:10,260 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 23:32:10,260 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 23:32:10,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-07 23:32:10,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 23:32:10,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-07 23:32:10,264 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-04-07 23:32:10,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 23:32:10,346 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2022-04-07 23:32:10,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 23:32:10,346 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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 12 [2022-04-07 23:32:10,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 23:32:10,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-04-07 23:32:10,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2022-04-07 23:32:10,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-04-07 23:32:10,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2022-04-07 23:32:10,348 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 17 transitions. [2022-04-07 23:32:10,361 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 23:32:10,362 INFO L225 Difference]: With dead ends: 15 [2022-04-07 23:32:10,362 INFO L226 Difference]: Without dead ends: 0 [2022-04-07 23:32:10,362 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-04-07 23:32:10,363 INFO L913 BasicCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 23:32:10,363 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 27 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 23:32:10,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-07 23:32:10,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-07 23:32:10,364 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-07 23:32:10,364 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-07 23:32:10,364 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-07 23:32:10,364 INFO L87 Difference]: Start difference. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-07 23:32:10,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 23:32:10,365 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-07 23:32:10,365 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-07 23:32:10,365 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 23:32:10,365 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 23:32:10,365 INFO L74 IsIncluded]: Start isIncluded. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-07 23:32:10,365 INFO L87 Difference]: Start difference. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-07 23:32:10,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 23:32:10,365 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-07 23:32:10,365 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-07 23:32:10,365 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 23:32:10,366 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 23:32:10,366 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-07 23:32:10,366 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-07 23:32:10,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-07 23:32:10,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-07 23:32:10,366 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-04-07 23:32:10,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 23:32:10,366 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-07 23:32:10,366 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-04-07 23:32:10,366 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-07 23:32:10,367 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 23:32:10,368 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-07 23:32:10,369 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-07 23:32:10,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-07 23:32:10,385 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|)) [2022-04-07 23:32:10,385 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-04-07 23:32:10,385 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-04-07 23:32:10,385 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-07 23:32:10,385 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-07 23:32:10,385 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-04-07 23:32:10,385 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-04-07 23:32:10,386 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 19 28) the Hoare annotation is: true [2022-04-07 23:32:10,386 INFO L882 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2022-04-07 23:32:10,386 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 19 28) no Hoare annotation was computed. [2022-04-07 23:32:10,386 INFO L878 garLoopResultBuilder]: At program point L24-2(lines 22 25) the Hoare annotation is: (<= main_~x~0 2) [2022-04-07 23:32:10,386 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 19 28) no Hoare annotation was computed. [2022-04-07 23:32:10,386 INFO L878 garLoopResultBuilder]: At program point L22-2(lines 22 25) the Hoare annotation is: (<= main_~x~0 2) [2022-04-07 23:32:10,386 INFO L882 garLoopResultBuilder]: For program point L23(lines 23 24) no Hoare annotation was computed. [2022-04-07 23:32:10,386 INFO L882 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-04-07 23:32:10,386 INFO L882 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2022-04-07 23:32:10,386 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 18) the Hoare annotation is: true [2022-04-07 23:32:10,387 INFO L882 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2022-04-07 23:32:10,387 INFO L882 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-04-07 23:32:10,387 INFO L882 garLoopResultBuilder]: For program point L15-2(lines 14 18) no Hoare annotation was computed. [2022-04-07 23:32:10,387 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-04-07 23:32:10,387 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 18) no Hoare annotation was computed. [2022-04-07 23:32:10,389 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-07 23:32:10,390 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-07 23:32:10,393 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-07 23:32:10,393 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2022-04-07 23:32:10,393 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2022-04-07 23:32:10,393 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-07 23:32:10,393 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2022-04-07 23:32:10,393 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2022-04-07 23:32:10,393 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2022-04-07 23:32:10,393 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2022-04-07 23:32:10,394 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-07 23:32:10,394 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-07 23:32:10,395 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2022-04-07 23:32:10,395 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-04-07 23:32:10,395 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-04-07 23:32:10,395 WARN L170 areAnnotationChecker]: L15-2 has no Hoare annotation [2022-04-07 23:32:10,395 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-07 23:32:10,395 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2022-04-07 23:32:10,395 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2022-04-07 23:32:10,395 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-07 23:32:10,395 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-07 23:32:10,395 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2022-04-07 23:32:10,395 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2022-04-07 23:32:10,395 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2022-04-07 23:32:10,396 INFO L163 areAnnotationChecker]: CFG has 5 edges. 5 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-07 23:32:10,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.04 11:32:10 BasicIcfg [2022-04-07 23:32:10,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-07 23:32:10,403 INFO L158 Benchmark]: Toolchain (without parser) took 1164.49ms. Allocated memory was 222.3MB in the beginning and 267.4MB in the end (delta: 45.1MB). Free memory was 194.0MB in the beginning and 230.6MB in the end (delta: -36.6MB). Peak memory consumption was 8.1MB. Max. memory is 8.0GB. [2022-04-07 23:32:10,403 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 222.3MB. Free memory is still 182.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-07 23:32:10,404 INFO L158 Benchmark]: CACSL2BoogieTranslator took 158.24ms. Allocated memory is still 222.3MB. Free memory was 193.9MB in the beginning and 195.2MB in the end (delta: -1.3MB). Peak memory consumption was 9.2MB. Max. memory is 8.0GB. [2022-04-07 23:32:10,404 INFO L158 Benchmark]: Boogie Preprocessor took 17.33ms. Allocated memory is still 222.3MB. Free memory was 195.2MB in the beginning and 193.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-07 23:32:10,404 INFO L158 Benchmark]: RCFGBuilder took 205.54ms. Allocated memory is still 222.3MB. Free memory was 193.7MB in the beginning and 183.4MB in the end (delta: 10.3MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-04-07 23:32:10,404 INFO L158 Benchmark]: IcfgTransformer took 17.08ms. Allocated memory is still 222.3MB. Free memory was 183.4MB in the beginning and 181.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-07 23:32:10,405 INFO L158 Benchmark]: TraceAbstraction took 762.44ms. Allocated memory was 222.3MB in the beginning and 267.4MB in the end (delta: 45.1MB). Free memory was 181.5MB in the beginning and 230.6MB in the end (delta: -49.2MB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-07 23:32:10,406 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 222.3MB. Free memory is still 182.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 158.24ms. Allocated memory is still 222.3MB. Free memory was 193.9MB in the beginning and 195.2MB in the end (delta: -1.3MB). Peak memory consumption was 9.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.33ms. Allocated memory is still 222.3MB. Free memory was 195.2MB in the beginning and 193.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 205.54ms. Allocated memory is still 222.3MB. Free memory was 193.7MB in the beginning and 183.4MB in the end (delta: 10.3MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 17.08ms. Allocated memory is still 222.3MB. Free memory was 183.4MB in the beginning and 181.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 762.44ms. Allocated memory was 222.3MB in the beginning and 267.4MB in the end (delta: 45.1MB). Free memory was 181.5MB in the beginning and 230.6MB in the end (delta: -49.2MB). There was no memory consumed. 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: 16]: 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, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 29 IncrementalHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 34 mSDtfsCounter, 29 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 17 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 44 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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: 22]: Loop Invariant Derived loop invariant: x <= 2 RESULT: Ultimate proved your program to be correct! [2022-04-07 23:32:10,429 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...