/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/geo1-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-14 23:06:22,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-14 23:06:22,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-14 23:06:22,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-14 23:06:22,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-14 23:06:22,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-14 23:06:22,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-14 23:06:22,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-14 23:06:22,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-14 23:06:22,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-14 23:06:22,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-14 23:06:22,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-14 23:06:22,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-14 23:06:22,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-14 23:06:22,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-14 23:06:22,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-14 23:06:22,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-14 23:06:22,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-14 23:06:22,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-14 23:06:22,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-14 23:06:22,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-14 23:06:22,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-14 23:06:22,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-14 23:06:22,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-14 23:06:22,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-14 23:06:22,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-14 23:06:22,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-14 23:06:22,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-14 23:06:22,231 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-14 23:06:22,239 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-14 23:06:22,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-14 23:06:22,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-14 23:06:22,240 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-14 23:06:22,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-14 23:06:22,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-14 23:06:22,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-14 23:06:22,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-14 23:06:22,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-14 23:06:22,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-14 23:06:22,241 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-14 23:06:22,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-14 23:06:22,242 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-14 23:06:22,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-14 23:06:22,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-14 23:06:22,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-14 23:06:22,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-14 23:06:22,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-14 23:06:22,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 23:06:22,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-14 23:06:22,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-14 23:06:22,252 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-14 23:06:22,252 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-14 23:06:22,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-14 23:06:22,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-14 23:06:22,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-14 23:06:22,477 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-14 23:06:22,480 INFO L275 PluginConnector]: CDTParser initialized [2022-02-14 23:06:22,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound2.c [2022-02-14 23:06:22,535 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a41767095/a102f15eea5942209447ca7f8b616bc9/FLAG2e3af04a7 [2022-02-14 23:06:22,894 INFO L306 CDTParser]: Found 1 translation units. [2022-02-14 23:06:22,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound2.c [2022-02-14 23:06:22,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a41767095/a102f15eea5942209447ca7f8b616bc9/FLAG2e3af04a7 [2022-02-14 23:06:22,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a41767095/a102f15eea5942209447ca7f8b616bc9 [2022-02-14 23:06:22,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-14 23:06:22,912 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-14 23:06:22,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-14 23:06:22,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-14 23:06:22,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-14 23:06:22,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:06:22" (1/1) ... [2022-02-14 23:06:22,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3029cfe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:22, skipping insertion in model container [2022-02-14 23:06:22,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:06:22" (1/1) ... [2022-02-14 23:06:22,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-14 23:06:22,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-14 23:06:23,076 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/geo1-ll_valuebound2.c[546,559] [2022-02-14 23:06:23,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 23:06:23,104 INFO L203 MainTranslator]: Completed pre-run [2022-02-14 23:06:23,117 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/geo1-ll_valuebound2.c[546,559] [2022-02-14 23:06:23,130 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 23:06:23,142 INFO L208 MainTranslator]: Completed translation [2022-02-14 23:06:23,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:23 WrapperNode [2022-02-14 23:06:23,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-14 23:06:23,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-14 23:06:23,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-14 23:06:23,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-14 23:06:23,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:23" (1/1) ... [2022-02-14 23:06:23,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:23" (1/1) ... [2022-02-14 23:06:23,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:23" (1/1) ... [2022-02-14 23:06:23,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:23" (1/1) ... [2022-02-14 23:06:23,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:23" (1/1) ... [2022-02-14 23:06:23,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:23" (1/1) ... [2022-02-14 23:06:23,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:23" (1/1) ... [2022-02-14 23:06:23,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-14 23:06:23,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-14 23:06:23,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-14 23:06:23,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-14 23:06:23,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:23" (1/1) ... [2022-02-14 23:06:23,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 23:06:23,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 23:06:23,216 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) [2022-02-14 23:06:23,231 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 [2022-02-14 23:06:23,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-14 23:06:23,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-14 23:06:23,255 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-14 23:06:23,255 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-14 23:06:23,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-14 23:06:23,256 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-14 23:06:23,256 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-14 23:06:23,256 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-14 23:06:23,256 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-14 23:06:23,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-14 23:06:23,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-14 23:06:23,256 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-14 23:06:23,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-14 23:06:23,257 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-14 23:06:23,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-14 23:06:23,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-14 23:06:23,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-14 23:06:23,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-14 23:06:23,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-14 23:06:23,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-14 23:06:23,308 INFO L234 CfgBuilder]: Building ICFG [2022-02-14 23:06:23,309 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-14 23:06:23,392 INFO L275 CfgBuilder]: Performing block encoding [2022-02-14 23:06:23,396 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-14 23:06:23,397 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-14 23:06:23,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:06:23 BoogieIcfgContainer [2022-02-14 23:06:23,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-14 23:06:23,399 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-14 23:06:23,399 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-14 23:06:23,399 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-14 23:06:23,402 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:06:23" (1/1) ... [2022-02-14 23:06:23,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 11:06:23 BasicIcfg [2022-02-14 23:06:23,417 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-14 23:06:23,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-14 23:06:23,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-14 23:06:23,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-14 23:06:23,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 11:06:22" (1/4) ... [2022-02-14 23:06:23,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ea8cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:06:23, skipping insertion in model container [2022-02-14 23:06:23,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:23" (2/4) ... [2022-02-14 23:06:23,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ea8cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:06:23, skipping insertion in model container [2022-02-14 23:06:23,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:06:23" (3/4) ... [2022-02-14 23:06:23,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ea8cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 11:06:23, skipping insertion in model container [2022-02-14 23:06:23,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 11:06:23" (4/4) ... [2022-02-14 23:06:23,422 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound2.cJordan [2022-02-14 23:06:23,431 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-14 23:06:23,431 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-14 23:06:23,498 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-14 23:06:23,504 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-14 23:06:23,504 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-14 23:06:23,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-14 23:06:23,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-14 23:06:23,521 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 23:06:23,522 INFO L514 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] [2022-02-14 23:06:23,522 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 23:06:23,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 23:06:23,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1950279688, now seen corresponding path program 1 times [2022-02-14 23:06:23,532 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 23:06:23,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685709434] [2022-02-14 23:06:23,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 23:06:23,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 23:06:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 23:06:23,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 23:06:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 23:06:23,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 23:06:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 23:06:23,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 23:06:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 23:06:23,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-14 23:06:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 23:06:23,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-14 23:06:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 23:06:23,692 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-14 23:06:23,692 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 23:06:23,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685709434] [2022-02-14 23:06:23,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685709434] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 23:06:23,693 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 23:06:23,694 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-14 23:06:23,695 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969028755] [2022-02-14 23:06:23,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 23:06:23,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-14 23:06:23,699 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 23:06:23,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-14 23:06:23,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-14 23:06:23,722 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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) [2022-02-14 23:06:23,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 23:06:23,768 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-02-14 23:06:23,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-14 23:06:23,771 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 [2022-02-14 23:06:23,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 23:06:23,776 INFO L225 Difference]: With dead ends: 32 [2022-02-14 23:06:23,776 INFO L226 Difference]: Without dead ends: 27 [2022-02-14 23:06:23,778 INFO L932 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 [2022-02-14 23:06:23,781 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 23:06:23,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 33 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 23:06:23,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-02-14 23:06:23,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-02-14 23:06:23,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-14 23:06:23,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-02-14 23:06:23,809 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2022-02-14 23:06:23,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 23:06:23,810 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-02-14 23:06:23,810 INFO L471 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) [2022-02-14 23:06:23,810 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-02-14 23:06:23,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-14 23:06:23,814 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 23:06:23,814 INFO L514 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] [2022-02-14 23:06:23,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-14 23:06:23,815 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 23:06:23,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 23:06:23,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1010552682, now seen corresponding path program 1 times [2022-02-14 23:06:23,822 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 23:06:23,822 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434826431] [2022-02-14 23:06:23,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 23:06:23,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 23:06:23,863 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 23:06:23,864 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1405444850] [2022-02-14 23:06:23,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 23:06:23,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 23:06:23,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 23:06:23,876 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) [2022-02-14 23:06:23,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-14 23:06:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 23:06:23,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-14 23:06:23,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 23:06:24,252 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-02-14 23:06:24,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 23:06:24,387 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-14 23:06:24,387 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 23:06:24,388 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434826431] [2022-02-14 23:06:24,388 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 23:06:24,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405444850] [2022-02-14 23:06:24,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405444850] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-14 23:06:24,393 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-14 23:06:24,393 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-02-14 23:06:24,394 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406802649] [2022-02-14 23:06:24,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 23:06:24,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-14 23:06:24,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 23:06:24,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-14 23:06:24,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-14 23:06:24,400 INFO L87 Difference]: Start difference. First operand 27 states and 31 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) [2022-02-14 23:06:24,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 23:06:24,438 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-02-14 23:06:24,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-14 23:06:24,439 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 [2022-02-14 23:06:24,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 23:06:24,440 INFO L225 Difference]: With dead ends: 31 [2022-02-14 23:06:24,440 INFO L226 Difference]: Without dead ends: 29 [2022-02-14 23:06:24,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-02-14 23:06:24,441 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 23:06:24,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 98 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 23:06:24,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-02-14 23:06:24,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-02-14 23:06:24,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 8 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-14 23:06:24,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-02-14 23:06:24,447 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 33 [2022-02-14 23:06:24,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 23:06:24,448 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-02-14 23:06:24,448 INFO L471 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) [2022-02-14 23:06:24,448 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-02-14 23:06:24,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-14 23:06:24,449 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 23:06:24,449 INFO L514 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, 1] [2022-02-14 23:06:24,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-14 23:06:24,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 23:06:24,656 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 23:06:24,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 23:06:24,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1070211269, now seen corresponding path program 1 times [2022-02-14 23:06:24,657 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 23:06:24,657 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749154682] [2022-02-14 23:06:24,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 23:06:24,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 23:06:24,674 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 23:06:24,674 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1813228656] [2022-02-14 23:06:24,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 23:06:24,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 23:06:24,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 23:06:24,677 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) [2022-02-14 23:06:24,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-14 23:06:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 23:06:24,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-14 23:06:24,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 23:06:24,954 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-14 23:06:24,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 23:06:25,110 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-14 23:06:25,111 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 23:06:25,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749154682] [2022-02-14 23:06:25,111 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 23:06:25,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813228656] [2022-02-14 23:06:25,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813228656] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 23:06:25,112 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-14 23:06:25,112 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-02-14 23:06:25,112 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714947218] [2022-02-14 23:06:25,112 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-14 23:06:25,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-14 23:06:25,113 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 23:06:25,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-14 23:06:25,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-02-14 23:06:25,114 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-14 23:06:25,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 23:06:25,222 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-02-14 23:06:25,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-14 23:06:25,223 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 40 [2022-02-14 23:06:25,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 23:06:25,223 INFO L225 Difference]: With dead ends: 27 [2022-02-14 23:06:25,223 INFO L226 Difference]: Without dead ends: 0 [2022-02-14 23:06:25,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-02-14 23:06:25,225 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 23:06:25,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 173 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 6 Unchecked, 0.1s Time] [2022-02-14 23:06:25,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-14 23:06:25,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-14 23:06:25,226 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) [2022-02-14 23:06:25,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-14 23:06:25,226 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2022-02-14 23:06:25,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 23:06:25,227 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-14 23:06:25,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-14 23:06:25,227 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-14 23:06:25,227 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-14 23:06:25,229 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-14 23:06:25,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-02-14 23:06:25,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-02-14 23:06:25,438 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-14 23:06:25,439 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-14 23:06:25,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 11:06:25 BasicIcfg [2022-02-14 23:06:25,442 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-14 23:06:25,442 INFO L158 Benchmark]: Toolchain (without parser) took 2530.09ms. Allocated memory was 179.3MB in the beginning and 252.7MB in the end (delta: 73.4MB). Free memory was 126.5MB in the beginning and 204.3MB in the end (delta: -77.7MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-14 23:06:25,442 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 179.3MB. Free memory is still 143.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-14 23:06:25,443 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.75ms. Allocated memory is still 179.3MB. Free memory was 126.3MB in the beginning and 152.3MB in the end (delta: -26.0MB). Peak memory consumption was 12.3MB. Max. memory is 8.0GB. [2022-02-14 23:06:25,443 INFO L158 Benchmark]: Boogie Preprocessor took 39.11ms. Allocated memory is still 179.3MB. Free memory was 152.3MB in the beginning and 150.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-14 23:06:25,443 INFO L158 Benchmark]: RCFGBuilder took 213.32ms. Allocated memory is still 179.3MB. Free memory was 150.7MB in the beginning and 140.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-14 23:06:25,444 INFO L158 Benchmark]: IcfgTransformer took 18.06ms. Allocated memory is still 179.3MB. Free memory was 140.8MB in the beginning and 139.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-14 23:06:25,444 INFO L158 Benchmark]: TraceAbstraction took 2023.85ms. Allocated memory was 179.3MB in the beginning and 252.7MB in the end (delta: 73.4MB). Free memory was 138.7MB in the beginning and 204.3MB in the end (delta: -65.6MB). Peak memory consumption was 8.5MB. Max. memory is 8.0GB. [2022-02-14 23:06:25,446 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 179.3MB. Free memory is still 143.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 223.75ms. Allocated memory is still 179.3MB. Free memory was 126.3MB in the beginning and 152.3MB in the end (delta: -26.0MB). Peak memory consumption was 12.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.11ms. Allocated memory is still 179.3MB. Free memory was 152.3MB in the beginning and 150.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 213.32ms. Allocated memory is still 179.3MB. Free memory was 150.7MB in the beginning and 140.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 18.06ms. Allocated memory is still 179.3MB. Free memory was 140.8MB in the beginning and 139.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2023.85ms. Allocated memory was 179.3MB in the beginning and 252.7MB in the end (delta: 73.4MB). Free memory was 138.7MB in the beginning and 204.3MB in the end (delta: -65.6MB). Peak memory consumption was 8.5MB. 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: 18]: 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, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 38 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 304 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 6 IncrementalHoareTripleChecker+Unchecked, 224 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 54 IncrementalHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 80 mSDtfsCounter, 54 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 163 GetRequests, 140 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 174 ConstructedInterpolants, 1 QuantifiedInterpolants, 356 SizeOfPredicates, 6 NumberOfNonLiveVariables, 210 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 113/124 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! [2022-02-14 23:06:25,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...