/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/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 17:06:47,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 17:06:47,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 17:06:47,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-17 17:06:47,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-17 17:06:47,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-17 17:06:47,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-17 17:06:47,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-17 17:06:47,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-17 17:06:47,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-17 17:06:47,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-17 17:06:47,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-17 17:06:47,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-17 17:06:47,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-17 17:06:47,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-17 17:06:47,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-17 17:06:47,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-17 17:06:47,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-17 17:06:47,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-17 17:06:47,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-17 17:06:47,894 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-17 17:06:47,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-17 17:06:47,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-17 17:06:47,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-17 17:06:47,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-17 17:06:47,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-17 17:06:47,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 17:06:47,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 17:06:47,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 17:06:47,919 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-17 17:06:47,930 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 17:06:47,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 17:06:47,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 17:06:47,932 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-17 17:06:47,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 17:06:47,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-17 17:06:47,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 17:06:47,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 17:06:47,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 17:06:47,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 17:06:47,934 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-17 17:06:47,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 17:06:47,934 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 17:06:47,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 17:06:47,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 17:06:47,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 17:06:47,935 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-17 17:06:47,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 17:06:47,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 17:06:47,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 17:06:47,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 17:06:47,936 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 17:06:47,936 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 17:06:48,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 17:06:48,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 17:06:48,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 17:06:48,183 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 17:06:48,184 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 17:06:48,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound2.c [2022-03-17 17:06:48,239 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e19e9a58b/a2e670e7ece440e3b1a71a4d1b4d0519/FLAGb1a8720d9 [2022-03-17 17:06:48,641 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 17:06:48,641 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound2.c [2022-03-17 17:06:48,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e19e9a58b/a2e670e7ece440e3b1a71a4d1b4d0519/FLAGb1a8720d9 [2022-03-17 17:06:49,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e19e9a58b/a2e670e7ece440e3b1a71a4d1b4d0519 [2022-03-17 17:06:49,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 17:06:49,048 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 17:06:49,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 17:06:49,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 17:06:49,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 17:06:49,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 05:06:49" (1/1) ... [2022-03-17 17:06:49,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6834e4e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:06:49, skipping insertion in model container [2022-03-17 17:06:49,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 05:06:49" (1/1) ... [2022-03-17 17:06:49,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 17:06:49,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 17:06:49,225 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound2.c[535,548] [2022-03-17 17:06:49,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 17:06:49,266 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 17:06:49,281 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound2.c[535,548] [2022-03-17 17:06:49,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 17:06:49,315 INFO L208 MainTranslator]: Completed translation [2022-03-17 17:06:49,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:06:49 WrapperNode [2022-03-17 17:06:49,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 17:06:49,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 17:06:49,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 17:06:49,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 17:06:49,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:06:49" (1/1) ... [2022-03-17 17:06:49,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:06:49" (1/1) ... [2022-03-17 17:06:49,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:06:49" (1/1) ... [2022-03-17 17:06:49,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:06:49" (1/1) ... [2022-03-17 17:06:49,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:06:49" (1/1) ... [2022-03-17 17:06:49,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:06:49" (1/1) ... [2022-03-17 17:06:49,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:06:49" (1/1) ... [2022-03-17 17:06:49,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 17:06:49,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 17:06:49,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 17:06:49,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 17:06:49,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:06:49" (1/1) ... [2022-03-17 17:06:49,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 17:06:49,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 17:06:49,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-17 17:06:49,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-17 17:06:49,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 17:06:49,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 17:06:49,435 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 17:06:49,435 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-17 17:06:49,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-17 17:06:49,436 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 17:06:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 17:06:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 17:06:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 17:06:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 17:06:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-17 17:06:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-17 17:06:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-17 17:06:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 17:06:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 17:06:49,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 17:06:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 17:06:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 17:06:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 17:06:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 17:06:49,498 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 17:06:49,499 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 17:06:49,654 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 17:06:49,666 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 17:06:49,666 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-17 17:06:49,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 05:06:49 BoogieIcfgContainer [2022-03-17 17:06:49,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 17:06:49,668 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 17:06:49,669 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 17:06:49,684 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 17:06:49,687 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 05:06:49" (1/1) ... [2022-03-17 17:06:49,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 05:06:49 BasicIcfg [2022-03-17 17:06:49,717 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 17:06:49,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 17:06:49,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 17:06:49,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 17:06:49,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 05:06:49" (1/4) ... [2022-03-17 17:06:49,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508caf56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 05:06:49, skipping insertion in model container [2022-03-17 17:06:49,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:06:49" (2/4) ... [2022-03-17 17:06:49,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508caf56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 05:06:49, skipping insertion in model container [2022-03-17 17:06:49,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 05:06:49" (3/4) ... [2022-03-17 17:06:49,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508caf56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 05:06:49, skipping insertion in model container [2022-03-17 17:06:49,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 05:06:49" (4/4) ... [2022-03-17 17:06:49,722 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll_valuebound2.cJordan [2022-03-17 17:06:49,726 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-17 17:06:49,726 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 17:06:49,793 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 17:06:49,802 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-17 17:06:49,803 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 17:06:49,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-17 17:06:49,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-17 17:06:49,831 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 17:06:49,832 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 17:06:49,833 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 17:06:49,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 17:06:49,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1042421720, now seen corresponding path program 1 times [2022-03-17 17:06:49,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 17:06:49,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304820918] [2022-03-17 17:06:49,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:06:49,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 17:06:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:06:50,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 17:06:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:06:50,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 17:06:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:06:50,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 17:06:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:06:50,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-17 17:06:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:06:50,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-17 17:06:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:06:50,090 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-17 17:06:50,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 17:06:50,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304820918] [2022-03-17 17:06:50,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304820918] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 17:06:50,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 17:06:50,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-17 17:06:50,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245740126] [2022-03-17 17:06:50,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 17:06:50,099 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-17 17:06:50,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 17:06:50,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-17 17:06:50,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 17:06:50,132 INFO L87 Difference]: Start difference. First operand has 37 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 17:06:50,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 17:06:50,216 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2022-03-17 17:06:50,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-17 17:06:50,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-03-17 17:06:50,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 17:06:50,224 INFO L225 Difference]: With dead ends: 37 [2022-03-17 17:06:50,224 INFO L226 Difference]: Without dead ends: 32 [2022-03-17 17:06:50,225 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 17:06:50,228 INFO L912 BasicCegarLoop]: 37 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 17:06:50,229 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 40 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 17:06:50,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-03-17 17:06:50,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-03-17 17:06:50,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-17 17:06:50,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2022-03-17 17:06:50,257 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 33 [2022-03-17 17:06:50,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 17:06:50,257 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2022-03-17 17:06:50,257 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 17:06:50,258 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2022-03-17 17:06:50,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-17 17:06:50,259 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 17:06:50,259 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 17:06:50,260 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 17:06:50,260 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 17:06:50,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 17:06:50,261 INFO L85 PathProgramCache]: Analyzing trace with hash 104571547, now seen corresponding path program 1 times [2022-03-17 17:06:50,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 17:06:50,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583000959] [2022-03-17 17:06:50,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:06:50,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 17:06:50,280 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 17:06:50,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [520866031] [2022-03-17 17:06:50,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:06:50,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 17:06:50,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 17:06:50,291 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 17:06:50,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-17 17:06:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:06:50,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-17 17:06:50,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 17:06:50,629 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-17 17:06:50,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-17 17:06:50,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 17:06:50,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583000959] [2022-03-17 17:06:50,630 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 17:06:50,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520866031] [2022-03-17 17:06:50,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520866031] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 17:06:50,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 17:06:50,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-17 17:06:50,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561024417] [2022-03-17 17:06:50,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 17:06:50,633 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 17:06:50,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 17:06:50,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 17:06:50,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-17 17:06:50,634 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 17:06:55,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.43s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 17:06:58,040 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 17:06:59,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 17:06:59,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 17:06:59,717 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2022-03-17 17:06:59,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-17 17:06:59,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2022-03-17 17:06:59,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 17:06:59,719 INFO L225 Difference]: With dead ends: 46 [2022-03-17 17:06:59,719 INFO L226 Difference]: Without dead ends: 46 [2022-03-17 17:06:59,720 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-17 17:06:59,721 INFO L912 BasicCegarLoop]: 34 mSDtfsCounter, 11 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-03-17 17:06:59,721 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 128 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time] [2022-03-17 17:06:59,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-03-17 17:06:59,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2022-03-17 17:06:59,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-03-17 17:06:59,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2022-03-17 17:06:59,731 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 33 [2022-03-17 17:06:59,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 17:06:59,731 INFO L478 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2022-03-17 17:06:59,731 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 17:06:59,732 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2022-03-17 17:06:59,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-17 17:06:59,733 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 17:06:59,733 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 17:06:59,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-17 17:06:59,947 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 17:06:59,948 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 17:06:59,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 17:06:59,948 INFO L85 PathProgramCache]: Analyzing trace with hash -844389750, now seen corresponding path program 1 times [2022-03-17 17:06:59,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 17:06:59,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619133020] [2022-03-17 17:06:59,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:06:59,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 17:06:59,961 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 17:06:59,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650542555] [2022-03-17 17:06:59,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:06:59,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 17:06:59,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 17:06:59,963 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 17:06:59,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-17 17:07:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:07:00,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-17 17:07:00,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 17:07:00,149 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-17 17:07:00,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 17:07:00,316 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-17 17:07:00,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 17:07:00,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619133020] [2022-03-17 17:07:00,316 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 17:07:00,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650542555] [2022-03-17 17:07:00,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650542555] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 17:07:00,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 17:07:00,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-03-17 17:07:00,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591800423] [2022-03-17 17:07:00,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 17:07:00,318 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 17:07:00,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 17:07:00,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 17:07:00,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-17 17:07:00,319 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 17:07:00,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 17:07:00,427 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2022-03-17 17:07:00,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 17:07:00,428 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 39 [2022-03-17 17:07:00,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 17:07:00,429 INFO L225 Difference]: With dead ends: 43 [2022-03-17 17:07:00,429 INFO L226 Difference]: Without dead ends: 0 [2022-03-17 17:07:00,429 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-17 17:07:00,430 INFO L912 BasicCegarLoop]: 27 mSDtfsCounter, 24 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 17:07:00,431 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 144 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 17:07:00,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-17 17:07:00,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-17 17:07:00,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-17 17:07:00,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-17 17:07:00,432 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2022-03-17 17:07:00,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 17:07:00,432 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-17 17:07:00,432 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 17:07:00,433 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-17 17:07:00,433 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-17 17:07:00,435 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-17 17:07:00,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-17 17:07:00,650 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-17 17:07:00,652 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-17 17:07:00,653 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-17 17:07:00,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 05:07:00 BasicIcfg [2022-03-17 17:07:00,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-17 17:07:00,657 INFO L158 Benchmark]: Toolchain (without parser) took 11608.00ms. Allocated memory was 180.4MB in the beginning and 220.2MB in the end (delta: 39.8MB). Free memory was 132.0MB in the beginning and 195.0MB in the end (delta: -63.0MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 17:07:00,657 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 180.4MB. Free memory is still 148.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 17:07:00,657 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.65ms. Allocated memory is still 180.4MB. Free memory was 131.8MB in the beginning and 156.9MB in the end (delta: -25.1MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. [2022-03-17 17:07:00,658 INFO L158 Benchmark]: Boogie Preprocessor took 36.89ms. Allocated memory is still 180.4MB. Free memory was 156.9MB in the beginning and 155.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-17 17:07:00,658 INFO L158 Benchmark]: RCFGBuilder took 312.27ms. Allocated memory is still 180.4MB. Free memory was 155.4MB in the beginning and 144.4MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-17 17:07:00,658 INFO L158 Benchmark]: IcfgTransformer took 48.33ms. Allocated memory is still 180.4MB. Free memory was 144.4MB in the beginning and 142.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-17 17:07:00,659 INFO L158 Benchmark]: TraceAbstraction took 10938.20ms. Allocated memory was 180.4MB in the beginning and 220.2MB in the end (delta: 39.8MB). Free memory was 142.3MB in the beginning and 195.0MB in the end (delta: -52.7MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 17:07:00,660 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 180.4MB. Free memory is still 148.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 266.65ms. Allocated memory is still 180.4MB. Free memory was 131.8MB in the beginning and 156.9MB in the end (delta: -25.1MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.89ms. Allocated memory is still 180.4MB. Free memory was 156.9MB in the beginning and 155.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 312.27ms. Allocated memory is still 180.4MB. Free memory was 155.4MB in the beginning and 144.4MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 48.33ms. Allocated memory is still 180.4MB. Free memory was 144.4MB in the beginning and 142.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 10938.20ms. Allocated memory was 180.4MB in the beginning and 220.2MB in the end (delta: 39.8MB). Free memory was 142.3MB in the beginning and 195.0MB in the end (delta: -52.7MB). 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: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.9s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 70 SdHoareTripleChecker+Valid, 9.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 57 mSDsluCounter, 312 SdHoareTripleChecker+Invalid, 9.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 214 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 105 IncrementalHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 98 mSDtfsCounter, 105 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=2, InterpolantAutomatonStates: 14, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 317 SizeOfPredicates, 9 NumberOfNonLiveVariables, 209 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 98/100 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 RESULT: Ultimate proved your program to be correct! [2022-03-17 17:07:00,675 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...