/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/in-de20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 08:46:49,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 08:46:49,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 08:46:49,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 08:46:49,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 08:46:49,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 08:46:49,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 08:46:49,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 08:46:49,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 08:46:49,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 08:46:49,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 08:46:49,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-03-20 08:46:49,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 08:46:49,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 08:46:49,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 08:46:49,973 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-20 08:46:50,002 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 08:46:50,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 08:46:50,004 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 08:46:50,004 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 08:46:50,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 08:46:50,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 08:46:50,005 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 08:46:50,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 08:46:50,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 08:46:50,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 08:46:50,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 08:46:50,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 08:46:50,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 08:46:50,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 08:46:50,007 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 08:46:50,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 08:46:50,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 08:46:50,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 08:46:50,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 08:46:50,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:46:50,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 08:46:50,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 08:46:50,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 08:46:50,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 08:46:50,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 08:46:50,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 08:46:50,008 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-20 08:46:50,008 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-20 08:46:50,009 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 08:46:50,009 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 08:46:50,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 08:46:50,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 08:46:50,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 08:46:50,247 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 08:46:50,248 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 08:46:50,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/in-de20.c [2022-03-20 08:46:50,304 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5488b389/97e9b6ae278d4e3ca7bf6f26d3e18fe7/FLAG03b1f4020 [2022-03-20 08:46:50,670 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 08:46:50,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/in-de20.c [2022-03-20 08:46:50,674 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5488b389/97e9b6ae278d4e3ca7bf6f26d3e18fe7/FLAG03b1f4020 [2022-03-20 08:46:50,685 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5488b389/97e9b6ae278d4e3ca7bf6f26d3e18fe7 [2022-03-20 08:46:50,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 08:46:50,689 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 08:46:50,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 08:46:50,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 08:46:50,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 08:46:50,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:46:50" (1/1) ... [2022-03-20 08:46:50,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4287e02a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:46:50, skipping insertion in model container [2022-03-20 08:46:50,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:46:50" (1/1) ... [2022-03-20 08:46:50,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 08:46:50,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 08:46:50,853 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/in-de20.c[368,381] [2022-03-20 08:46:50,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:46:50,871 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 08:46:50,879 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/in-de20.c[368,381] [2022-03-20 08:46:50,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:46:50,892 INFO L208 MainTranslator]: Completed translation [2022-03-20 08:46:50,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:46:50 WrapperNode [2022-03-20 08:46:50,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 08:46:50,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 08:46:50,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 08:46:50,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 08:46:50,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:46:50" (1/1) ... [2022-03-20 08:46:50,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:46:50" (1/1) ... [2022-03-20 08:46:50,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:46:50" (1/1) ... [2022-03-20 08:46:50,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:46:50" (1/1) ... [2022-03-20 08:46:50,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:46:50" (1/1) ... [2022-03-20 08:46:50,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:46:50" (1/1) ... [2022-03-20 08:46:50,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:46:50" (1/1) ... [2022-03-20 08:46:50,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 08:46:50,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 08:46:50,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 08:46:50,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 08:46:50,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:46:50" (1/1) ... [2022-03-20 08:46:50,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:46:50,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:46:50,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 08:46:50,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 08:46:50,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 08:46:50,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 08:46:50,974 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 08:46:50,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 08:46:50,975 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 08:46:50,975 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 08:46:50,975 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 08:46:50,976 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 08:46:50,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 08:46:50,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-20 08:46:50,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 08:46:50,976 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 08:46:50,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 08:46:50,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 08:46:50,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 08:46:50,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 08:46:50,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 08:46:50,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 08:46:51,021 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 08:46:51,022 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 08:46:51,121 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 08:46:51,131 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 08:46:51,131 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-20 08:46:51,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:46:51 BoogieIcfgContainer [2022-03-20 08:46:51,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 08:46:51,133 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 08:46:51,133 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 08:46:51,134 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 08:46:51,145 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:46:51" (1/1) ... [2022-03-20 08:46:51,146 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-03-20 08:46:54,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:46:54 BasicIcfg [2022-03-20 08:46:54,885 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 08:46:54,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 08:46:54,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 08:46:54,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 08:46:54,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 08:46:50" (1/4) ... [2022-03-20 08:46:54,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a3bbe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:46:54, skipping insertion in model container [2022-03-20 08:46:54,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:46:50" (2/4) ... [2022-03-20 08:46:54,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a3bbe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:46:54, skipping insertion in model container [2022-03-20 08:46:54,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:46:51" (3/4) ... [2022-03-20 08:46:54,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a3bbe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 08:46:54, skipping insertion in model container [2022-03-20 08:46:54,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:46:54" (4/4) ... [2022-03-20 08:46:54,890 INFO L111 eAbstractionObserver]: Analyzing ICFG in-de20.cqvasr [2022-03-20 08:46:54,894 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 08:46:54,894 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 08:46:54,924 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 08:46:54,929 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-20 08:46:54,929 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 08:46:54,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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) [2022-03-20 08:46:54,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-20 08:46:54,944 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:46:54,944 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:46:54,945 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:46:54,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:46:54,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1032895658, now seen corresponding path program 1 times [2022-03-20 08:46:54,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:46:54,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082819357] [2022-03-20 08:46:54,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:46:54,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:46:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:46:55,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:46:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:46:55,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:46:55,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:46:55,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082819357] [2022-03-20 08:46:55,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082819357] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:46:55,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:46:55,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 08:46:55,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608240450] [2022-03-20 08:46:55,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:46:55,089 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 08:46:55,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:46:55,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 08:46:55,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 08:46:55,114 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-03-20 08:46:55,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:46:55,143 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2022-03-20 08:46:55,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 08:46:55,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 13 [2022-03-20 08:46:55,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:46:55,153 INFO L225 Difference]: With dead ends: 35 [2022-03-20 08:46:55,153 INFO L226 Difference]: Without dead ends: 14 [2022-03-20 08:46:55,155 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 [2022-03-20 08:46:55,159 INFO L913 BasicCegarLoop]: 19 mSDtfsCounter, 13 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 08:46:55,160 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 22 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 08:46:55,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-03-20 08:46:55,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-03-20 08:46:55,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2022-03-20 08:46:55,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-03-20 08:46:55,184 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 13 [2022-03-20 08:46:55,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:46:55,184 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-03-20 08:46:55,185 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-03-20 08:46:55,185 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-03-20 08:46:55,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-20 08:46:55,185 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:46:55,186 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:46:55,186 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 08:46:55,186 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:46:55,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:46:55,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1920399339, now seen corresponding path program 1 times [2022-03-20 08:46:55,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:46:55,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737964784] [2022-03-20 08:46:55,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:46:55,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:46:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:46:55,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:46:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:46:55,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:46:55,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:46:55,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737964784] [2022-03-20 08:46:55,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737964784] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:46:55,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:46:55,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 08:46:55,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950989907] [2022-03-20 08:46:55,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:46:55,351 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 08:46:55,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:46:55,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 08:46:55,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 08:46:55,352 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-03-20 08:46:55,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:46:55,426 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-03-20 08:46:55,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 08:46:55,426 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 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 13 [2022-03-20 08:46:55,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:46:55,427 INFO L225 Difference]: With dead ends: 22 [2022-03-20 08:46:55,427 INFO L226 Difference]: Without dead ends: 17 [2022-03-20 08:46:55,427 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-03-20 08:46:55,428 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 08:46:55,429 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 28 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 08:46:55,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-03-20 08:46:55,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-03-20 08:46:55,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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) [2022-03-20 08:46:55,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-03-20 08:46:55,433 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2022-03-20 08:46:55,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:46:55,433 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-03-20 08:46:55,433 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-03-20 08:46:55,433 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-03-20 08:46:55,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-20 08:46:55,434 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:46:55,434 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:46:55,434 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 08:46:55,434 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:46:55,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:46:55,435 INFO L85 PathProgramCache]: Analyzing trace with hash -570442020, now seen corresponding path program 1 times [2022-03-20 08:46:55,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:46:55,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829309061] [2022-03-20 08:46:55,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:46:55,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:46:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:46:55,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:46:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:46:55,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:46:55,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:46:55,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829309061] [2022-03-20 08:46:55,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829309061] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:46:55,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845816539] [2022-03-20 08:46:55,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:46:55,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:46:55,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:46:55,683 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 08:46:55,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 08:46:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:46:55,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-20 08:46:55,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:46:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:46:56,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:46:56,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:46:56,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845816539] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:46:56,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:46:56,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2022-03-20 08:46:56,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182692178] [2022-03-20 08:46:56,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:46:56,317 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-20 08:46:56,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:46:56,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-20 08:46:56,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-03-20 08:46:56,318 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 18 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:46:56,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:46:56,911 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2022-03-20 08:46:56,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-20 08:46:56,911 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-03-20 08:46:56,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:46:56,911 INFO L225 Difference]: With dead ends: 23 [2022-03-20 08:46:56,911 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 08:46:56,912 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=213, Invalid=779, Unknown=0, NotChecked=0, Total=992 [2022-03-20 08:46:56,913 INFO L913 BasicCegarLoop]: 7 mSDtfsCounter, 26 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 08:46:56,913 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 54 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 08:46:56,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 08:46:56,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 08:46:56,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-20 08:46:56,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 08:46:56,914 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-03-20 08:46:56,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:46:56,914 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 08:46:56,914 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:46:56,915 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 08:46:56,915 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 08:46:56,917 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 08:46:56,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 08:46:57,118 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 [2022-03-20 08:46:57,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-20 08:46:57,316 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|)) [2022-03-20 08:46:57,316 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-20 08:46:57,316 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-20 08:46:57,316 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-20 08:46:57,316 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-20 08:46:57,316 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-20 08:46:57,317 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-20 08:46:57,317 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 12 31) the Hoare annotation is: true [2022-03-20 08:46:57,317 INFO L878 garLoopResultBuilder]: At program point L16-2(lines 16 20) the Hoare annotation is: (let ((.cse0 (* (- 1) main_~x~0)) (.cse1 (* (- 1) main_~y~0)) (.cse2 (div main_~n~0 4294967296))) (and (< (div (+ (- 1) .cse0 .cse1) (- 4294967296)) (+ .cse2 (div (+ main_~y~0 main_~x~0 (* (- 1) main_~n~0)) 4294967296) 2)) (<= (+ (div (+ main_~n~0 .cse0 .cse1) (- 4294967296)) .cse2) (+ (div (+ main_~y~0 main_~x~0 (- 4294967296)) 4294967296) 1)))) [2022-03-20 08:46:57,317 INFO L882 garLoopResultBuilder]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2022-03-20 08:46:57,317 INFO L878 garLoopResultBuilder]: At program point L23-2(lines 23 27) the Hoare annotation is: (let ((.cse1 (* (- 1) main_~z~0)) (.cse2 (* (- 1) main_~x~0)) (.cse0 (div main_~n~0 4294967296))) (and (<= (+ .cse0 (div (+ main_~n~0 .cse1 .cse2) (- 4294967296))) (+ (div (+ main_~z~0 main_~x~0 (- 4294967296)) 4294967296) 1)) (< (div (+ (- 1) .cse1 .cse2) (- 4294967296)) (+ (div (+ main_~z~0 main_~x~0 (* (- 1) main_~n~0)) 4294967296) .cse0 2)))) [2022-03-20 08:46:57,317 INFO L878 garLoopResultBuilder]: At program point L23-3(lines 23 27) the Hoare annotation is: (or (= main_~n~0 main_~x~0) (let ((.cse2 (div main_~n~0 4294967296))) (let ((.cse1 (+ main_~n~0 (* 4294967296 (div main_~x~0 4294967296)))) (.cse0 (* .cse2 4294967296)) (.cse3 (* (- 1) main_~z~0)) (.cse4 (* (- 1) main_~x~0))) (and (<= (+ main_~x~0 .cse0) .cse1) (<= (+ .cse2 (div (+ main_~n~0 .cse3 .cse4) (- 4294967296))) (+ (div (+ main_~z~0 main_~x~0 (- 4294967296)) 4294967296) 1)) (< .cse1 (+ main_~x~0 .cse0 1)) (< (div (+ (- 1) .cse3 .cse4) (- 4294967296)) (+ (div (+ main_~z~0 main_~x~0 (* (- 1) main_~n~0)) 4294967296) .cse2 2)))))) [2022-03-20 08:46:57,317 INFO L882 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-03-20 08:46:57,317 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 12 31) no Hoare annotation was computed. [2022-03-20 08:46:57,317 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 12 31) no Hoare annotation was computed. [2022-03-20 08:46:57,317 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2022-03-20 08:46:57,318 INFO L882 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2022-03-20 08:46:57,318 INFO L882 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-03-20 08:46:57,318 INFO L882 garLoopResultBuilder]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2022-03-20 08:46:57,318 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2022-03-20 08:46:57,318 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2022-03-20 08:46:57,321 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-20 08:46:57,322 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 08:46:57,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 08:46:57 BasicIcfg [2022-03-20 08:46:57,331 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 08:46:57,338 INFO L158 Benchmark]: Toolchain (without parser) took 6642.40ms. Allocated memory was 220.2MB in the beginning and 276.8MB in the end (delta: 56.6MB). Free memory was 166.7MB in the beginning and 125.2MB in the end (delta: 41.5MB). Peak memory consumption was 98.5MB. Max. memory is 8.0GB. [2022-03-20 08:46:57,339 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 220.2MB. Free memory was 183.1MB in the beginning and 182.9MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 08:46:57,339 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.08ms. Allocated memory is still 220.2MB. Free memory was 166.5MB in the beginning and 193.3MB in the end (delta: -26.7MB). Peak memory consumption was 10.3MB. Max. memory is 8.0GB. [2022-03-20 08:46:57,339 INFO L158 Benchmark]: Boogie Preprocessor took 26.27ms. Allocated memory is still 220.2MB. Free memory was 193.3MB in the beginning and 192.0MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 08:46:57,340 INFO L158 Benchmark]: RCFGBuilder took 210.49ms. Allocated memory is still 220.2MB. Free memory was 191.6MB in the beginning and 182.2MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-20 08:46:57,340 INFO L158 Benchmark]: IcfgTransformer took 3751.53ms. Allocated memory is still 220.2MB. Free memory was 182.2MB in the beginning and 162.7MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-03-20 08:46:57,340 INFO L158 Benchmark]: TraceAbstraction took 2445.76ms. Allocated memory was 220.2MB in the beginning and 276.8MB in the end (delta: 56.6MB). Free memory was 162.2MB in the beginning and 125.2MB in the end (delta: 37.0MB). Peak memory consumption was 94.6MB. Max. memory is 8.0GB. [2022-03-20 08:46:57,345 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 220.2MB. Free memory was 183.1MB in the beginning and 182.9MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 203.08ms. Allocated memory is still 220.2MB. Free memory was 166.5MB in the beginning and 193.3MB in the end (delta: -26.7MB). Peak memory consumption was 10.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.27ms. Allocated memory is still 220.2MB. Free memory was 193.3MB in the beginning and 192.0MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 210.49ms. Allocated memory is still 220.2MB. Free memory was 191.6MB in the beginning and 182.2MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 3751.53ms. Allocated memory is still 220.2MB. Free memory was 182.2MB in the beginning and 162.7MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 2445.76ms. Allocated memory was 220.2MB in the beginning and 276.8MB in the end (delta: 56.6MB). Free memory was 162.2MB in the beginning and 125.2MB in the end (delta: 37.0MB). Peak memory consumption was 94.6MB. 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: 7]: 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, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 54 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 53 mSDsluCounter, 104 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 67 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 106 IncrementalHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 37 mSDtfsCounter, 106 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 26, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 13 PreInvPairs, 24 NumberOfFragments, 190 HoareAnnotationTreeSize, 13 FomulaSimplifications, 7 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 442 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 527 SizeOfPredicates, 3 NumberOfNonLiveVariables, 66 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 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: 16]: Loop Invariant Derived loop invariant: (-1 + -1 * x + -1 * y) / -4294967296 < n / 4294967296 + (y + x + -1 * n) / 4294967296 + 2 && (n + -1 * x + -1 * y) / -4294967296 + n / 4294967296 <= (y + x + -4294967296) / 4294967296 + 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: n / 4294967296 + (n + -1 * z + -1 * x) / -4294967296 <= (z + x + -4294967296) / 4294967296 + 1 && (-1 + -1 * z + -1 * x) / -4294967296 < (z + x + -1 * n) / 4294967296 + n / 4294967296 + 2 RESULT: Ultimate proved your program to be correct! [2022-03-20 08:46:57,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...