/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/geo3-ll_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-14 23:07:41,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-14 23:07:41,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-14 23:07:41,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-14 23:07:41,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-14 23:07:41,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-14 23:07:41,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-14 23:07:41,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-14 23:07:41,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-14 23:07:41,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-14 23:07:41,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-14 23:07:41,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-14 23:07:41,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-14 23:07:41,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-14 23:07:41,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-14 23:07:41,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-14 23:07:41,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-14 23:07:41,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-14 23:07:41,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-14 23:07:41,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-14 23:07:41,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-14 23:07:41,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-14 23:07:41,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-14 23:07:41,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-14 23:07:41,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-14 23:07:41,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-14 23:07:41,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-14 23:07:41,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-14 23:07:41,423 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-14 23:07:41,433 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-14 23:07:41,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-14 23:07:41,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-14 23:07:41,434 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-14 23:07:41,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-14 23:07:41,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-14 23:07:41,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-14 23:07:41,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-14 23:07:41,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-14 23:07:41,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-14 23:07:41,435 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-14 23:07:41,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-14 23:07:41,436 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-14 23:07:41,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-14 23:07:41,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-14 23:07:41,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-14 23:07:41,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-14 23:07:41,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-14 23:07:41,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 23:07:41,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-14 23:07:41,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-14 23:07:41,437 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-14 23:07:41,437 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-14 23:07:41,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-14 23:07:41,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-14 23:07:41,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-14 23:07:41,641 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-14 23:07:41,643 INFO L275 PluginConnector]: CDTParser initialized [2022-02-14 23:07:41,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound20.c [2022-02-14 23:07:41,703 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe745e3a9/93e7b8842ca34f718a1f34801aaf86f0/FLAGf4eefae44 [2022-02-14 23:07:42,055 INFO L306 CDTParser]: Found 1 translation units. [2022-02-14 23:07:42,055 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound20.c [2022-02-14 23:07:42,063 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe745e3a9/93e7b8842ca34f718a1f34801aaf86f0/FLAGf4eefae44 [2022-02-14 23:07:42,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe745e3a9/93e7b8842ca34f718a1f34801aaf86f0 [2022-02-14 23:07:42,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-14 23:07:42,080 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-14 23:07:42,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-14 23:07:42,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-14 23:07:42,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-14 23:07:42,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:07:42" (1/1) ... [2022-02-14 23:07:42,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68408da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:07:42, skipping insertion in model container [2022-02-14 23:07:42,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:07:42" (1/1) ... [2022-02-14 23:07:42,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-14 23:07:42,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-14 23:07:42,199 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/geo3-ll_valuebound20.c[525,538] [2022-02-14 23:07:42,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 23:07:42,242 INFO L203 MainTranslator]: Completed pre-run [2022-02-14 23:07:42,252 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/geo3-ll_valuebound20.c[525,538] [2022-02-14 23:07:42,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 23:07:42,266 INFO L208 MainTranslator]: Completed translation [2022-02-14 23:07:42,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:07:42 WrapperNode [2022-02-14 23:07:42,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-14 23:07:42,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-14 23:07:42,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-14 23:07:42,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-14 23:07:42,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:07:42" (1/1) ... [2022-02-14 23:07:42,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:07:42" (1/1) ... [2022-02-14 23:07:42,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:07:42" (1/1) ... [2022-02-14 23:07:42,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:07:42" (1/1) ... [2022-02-14 23:07:42,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:07:42" (1/1) ... [2022-02-14 23:07:42,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:07:42" (1/1) ... [2022-02-14 23:07:42,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:07:42" (1/1) ... [2022-02-14 23:07:42,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-14 23:07:42,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-14 23:07:42,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-14 23:07:42,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-14 23:07:42,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:07:42" (1/1) ... [2022-02-14 23:07:42,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 23:07:42,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 23:07:42,314 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 23:07:42,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-14 23:07:42,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-14 23:07:42,340 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-14 23:07:42,340 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-14 23:07:42,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-14 23:07:42,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-14 23:07:42,341 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-14 23:07:42,341 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-14 23:07:42,341 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-14 23:07:42,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-14 23:07:42,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-14 23:07:42,342 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-14 23:07:42,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-14 23:07:42,342 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-14 23:07:42,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-14 23:07:42,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-14 23:07:42,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-14 23:07:42,319 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 23:07:42,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-14 23:07:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-14 23:07:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-14 23:07:42,395 INFO L234 CfgBuilder]: Building ICFG [2022-02-14 23:07:42,396 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-14 23:07:42,477 INFO L275 CfgBuilder]: Performing block encoding [2022-02-14 23:07:42,481 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-14 23:07:42,481 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-14 23:07:42,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:07:42 BoogieIcfgContainer [2022-02-14 23:07:42,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-14 23:07:42,483 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-14 23:07:42,483 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-14 23:07:42,484 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-14 23:07:42,486 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:07:42" (1/1) ... [2022-02-14 23:07:42,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 11:07:42 BasicIcfg [2022-02-14 23:07:42,516 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-14 23:07:42,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-14 23:07:42,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-14 23:07:42,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-14 23:07:42,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 11:07:42" (1/4) ... [2022-02-14 23:07:42,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14320a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:07:42, skipping insertion in model container [2022-02-14 23:07:42,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:07:42" (2/4) ... [2022-02-14 23:07:42,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14320a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:07:42, skipping insertion in model container [2022-02-14 23:07:42,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:07:42" (3/4) ... [2022-02-14 23:07:42,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14320a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 11:07:42, skipping insertion in model container [2022-02-14 23:07:42,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 11:07:42" (4/4) ... [2022-02-14 23:07:42,521 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_valuebound20.cJordan [2022-02-14 23:07:42,530 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-14 23:07:42,530 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-14 23:07:42,560 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-14 23:07:42,565 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 23:07:42,565 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-14 23:07:42,586 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-14 23:07:42,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-14 23:07:42,592 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 23:07:42,593 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 23:07:42,593 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 23:07:42,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 23:07:42,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1338008438, now seen corresponding path program 1 times [2022-02-14 23:07:42,603 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 23:07:42,603 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3970251] [2022-02-14 23:07:42,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 23:07:42,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 23:07:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 23:07:42,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 23:07:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 23:07:42,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 23:07:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 23:07:42,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 23:07:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 23:07:42,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-14 23:07:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 23:07:42,804 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-02-14 23:07:42,805 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 23:07:42,805 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3970251] [2022-02-14 23:07:42,805 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3970251] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 23:07:42,805 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 23:07:42,805 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-14 23:07:42,806 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921214632] [2022-02-14 23:07:42,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 23:07:42,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-14 23:07:42,810 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 23:07:42,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-14 23:07:42,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-14 23:07:42,832 INFO L87 Difference]: Start difference. First operand has 31 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-14 23:07:42,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 23:07:42,885 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-02-14 23:07:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-14 23:07:42,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-02-14 23:07:42,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 23:07:42,895 INFO L225 Difference]: With dead ends: 31 [2022-02-14 23:07:42,895 INFO L226 Difference]: Without dead ends: 26 [2022-02-14 23:07:42,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 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 23:07:42,904 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 23:07:42,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 32 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 23:07:42,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-02-14 23:07:42,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-02-14 23:07:42,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-14 23:07:42,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-02-14 23:07:42,933 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 29 [2022-02-14 23:07:42,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 23:07:42,933 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-02-14 23:07:42,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-14 23:07:42,933 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-02-14 23:07:42,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-14 23:07:42,934 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 23:07:42,934 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 23:07:42,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-14 23:07:42,935 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 23:07:42,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 23:07:42,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1251333530, now seen corresponding path program 1 times [2022-02-14 23:07:42,935 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 23:07:42,936 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374166157] [2022-02-14 23:07:42,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 23:07:42,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 23:07:42,957 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 23:07:42,957 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013366902] [2022-02-14 23:07:42,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 23:07:42,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 23:07:42,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 23:07:42,959 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 23:07:42,991 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 23:07:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 23:07:43,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-14 23:07:43,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 23:07:43,181 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-02-14 23:07:43,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-14 23:07:43,181 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 23:07:43,182 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374166157] [2022-02-14 23:07:43,182 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 23:07:43,185 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013366902] [2022-02-14 23:07:43,185 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013366902] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 23:07:43,185 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 23:07:43,185 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-14 23:07:43,186 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130047308] [2022-02-14 23:07:43,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 23:07:43,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-14 23:07:43,188 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 23:07:43,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-14 23:07:43,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-14 23:07:43,189 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-02-14 23:07:43,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 23:07:43,220 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-02-14 23:07:43,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-14 23:07:43,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2022-02-14 23:07:43,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 23:07:43,226 INFO L225 Difference]: With dead ends: 34 [2022-02-14 23:07:43,231 INFO L226 Difference]: Without dead ends: 33 [2022-02-14 23:07:43,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-14 23:07:43,232 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 23:07:43,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 99 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 23:07:43,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-02-14 23:07:43,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-02-14 23:07:43,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-14 23:07:43,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-02-14 23:07:43,244 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 29 [2022-02-14 23:07:43,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 23:07:43,244 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-02-14 23:07:43,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-02-14 23:07:43,245 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-02-14 23:07:43,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-14 23:07:43,245 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 23:07:43,246 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 23:07:43,264 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 23:07:43,448 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 23:07:43,448 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 23:07:43,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 23:07:43,449 INFO L85 PathProgramCache]: Analyzing trace with hash -284720885, now seen corresponding path program 1 times [2022-02-14 23:07:43,449 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 23:07:43,449 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088857666] [2022-02-14 23:07:43,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 23:07:43,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 23:07:43,473 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 23:07:43,474 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599172506] [2022-02-14 23:07:43,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 23:07:43,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 23:07:43,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 23:07:43,487 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 23:07:43,490 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 23:07:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 23:07:43,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-14 23:07:43,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 23:07:43,755 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-02-14 23:07:43,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 23:07:44,198 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-02-14 23:07:44,199 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 23:07:44,199 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088857666] [2022-02-14 23:07:44,199 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 23:07:44,199 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599172506] [2022-02-14 23:07:44,199 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599172506] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 23:07:44,199 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-14 23:07:44,199 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-02-14 23:07:44,199 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759366395] [2022-02-14 23:07:44,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-14 23:07:44,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-14 23:07:44,200 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 23:07:44,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-14 23:07:44,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-02-14 23:07:44,201 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-14 23:07:44,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 23:07:44,511 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-02-14 23:07:44,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-14 23:07:44,511 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 36 [2022-02-14 23:07:44,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 23:07:44,511 INFO L225 Difference]: With dead ends: 35 [2022-02-14 23:07:44,511 INFO L226 Difference]: Without dead ends: 0 [2022-02-14 23:07:44,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-02-14 23:07:44,512 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 13 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-14 23:07:44,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 133 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-14 23:07:44,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-14 23:07:44,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-14 23:07:44,513 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 23:07:44,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-14 23:07:44,513 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2022-02-14 23:07:44,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 23:07:44,513 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-14 23:07:44,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-14 23:07:44,514 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-14 23:07:44,514 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-14 23:07:44,515 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-14 23:07:44,535 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 23:07:44,716 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 23:07:44,719 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-14 23:07:44,719 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-14 23:07:44,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 11:07:44 BasicIcfg [2022-02-14 23:07:44,722 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-14 23:07:44,723 INFO L158 Benchmark]: Toolchain (without parser) took 2642.68ms. Allocated memory was 198.2MB in the beginning and 238.0MB in the end (delta: 39.8MB). Free memory was 149.9MB in the beginning and 167.4MB in the end (delta: -17.4MB). Peak memory consumption was 23.9MB. Max. memory is 8.0GB. [2022-02-14 23:07:44,723 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 198.2MB. Free memory was 166.2MB in the beginning and 166.0MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-14 23:07:44,723 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.82ms. Allocated memory is still 198.2MB. Free memory was 149.8MB in the beginning and 175.0MB in the end (delta: -25.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-02-14 23:07:44,723 INFO L158 Benchmark]: Boogie Preprocessor took 21.05ms. Allocated memory is still 198.2MB. Free memory was 175.0MB in the beginning and 173.7MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-14 23:07:44,723 INFO L158 Benchmark]: RCFGBuilder took 193.49ms. Allocated memory is still 198.2MB. Free memory was 173.7MB in the beginning and 163.6MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-14 23:07:44,724 INFO L158 Benchmark]: IcfgTransformer took 33.16ms. Allocated memory is still 198.2MB. Free memory was 163.2MB in the beginning and 162.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-14 23:07:44,724 INFO L158 Benchmark]: TraceAbstraction took 2205.07ms. Allocated memory was 198.2MB in the beginning and 238.0MB in the end (delta: 39.8MB). Free memory was 161.5MB in the beginning and 167.4MB in the end (delta: -5.8MB). Peak memory consumption was 34.9MB. Max. memory is 8.0GB. [2022-02-14 23:07:44,725 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 198.2MB. Free memory was 166.2MB in the beginning and 166.0MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 183.82ms. Allocated memory is still 198.2MB. Free memory was 149.8MB in the beginning and 175.0MB in the end (delta: -25.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.05ms. Allocated memory is still 198.2MB. Free memory was 175.0MB in the beginning and 173.7MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 193.49ms. Allocated memory is still 198.2MB. Free memory was 173.7MB in the beginning and 163.6MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 33.16ms. Allocated memory is still 198.2MB. Free memory was 163.2MB in the beginning and 162.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2205.07ms. Allocated memory was 198.2MB in the beginning and 238.0MB in the end (delta: 39.8MB). Free memory was 161.5MB in the beginning and 167.4MB in the end (delta: -5.8MB). Peak memory consumption was 34.9MB. 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: 17]: 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, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 264 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 184 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 67 IncrementalHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 80 mSDtfsCounter, 67 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, InterpolantAutomatonStates: 15, 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, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 3 NumberOfNonLiveVariables, 209 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 52/56 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 23:07:44,741 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...