/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-5d317bd [2022-03-18 19:30:16,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 19:30:16,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 19:30:16,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 19:30:16,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 19:30:16,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 19:30:16,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 19:30:16,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 19:30:16,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 19:30:16,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 19:30:16,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 19:30:16,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 19:30:16,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 19:30:16,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 19:30:16,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 19:30:16,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 19:30:16,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 19:30:16,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 19:30:16,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 19:30:16,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 19:30:16,092 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 19:30:16,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 19:30:16,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 19:30:16,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 19:30:16,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 19:30:16,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-18 19:30:16,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-18 19:30:16,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-18 19:30:16,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-18 19:30:16,104 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-18 19:30:16,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-18 19:30:16,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-18 19:30:16,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-18 19:30:16,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-18 19:30:16,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 19:30:16,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 19:30:16,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 19:30:16,108 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-18 19:30:16,115 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 19:30:16,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 19:30:16,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 19:30:16,117 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 19:30:16,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 19:30:16,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 19:30:16,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 19:30:16,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 19:30:16,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 19:30:16,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 19:30:16,118 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 19:30:16,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 19:30:16,119 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 19:30:16,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 19:30:16,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 19:30:16,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 19:30:16,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 19:30:16,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 19:30:16,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 19:30:16,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 19:30:16,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 19:30:16,120 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-18 19:30:16,120 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 19:30:16,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 19:30:16,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 19:30:16,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 19:30:16,296 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 19:30:16,296 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 19:30:16,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound2.c [2022-03-18 19:30:16,342 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5d84eae3/31313cd1aa824edba2a58f94ef038953/FLAGd8d817226 [2022-03-18 19:30:16,620 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 19:30:16,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound2.c [2022-03-18 19:30:16,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5d84eae3/31313cd1aa824edba2a58f94ef038953/FLAGd8d817226 [2022-03-18 19:30:17,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5d84eae3/31313cd1aa824edba2a58f94ef038953 [2022-03-18 19:30:17,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 19:30:17,076 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-18 19:30:17,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 19:30:17,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 19:30:17,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 19:30:17,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 07:30:17" (1/1) ... [2022-03-18 19:30:17,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@145ff7c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:30:17, skipping insertion in model container [2022-03-18 19:30:17,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 07:30:17" (1/1) ... [2022-03-18 19:30:17,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 19:30:17,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 19:30:17,241 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] [2022-03-18 19:30:17,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 19:30:17,264 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 19:30:17,276 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] [2022-03-18 19:30:17,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 19:30:17,289 INFO L208 MainTranslator]: Completed translation [2022-03-18 19:30:17,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:30:17 WrapperNode [2022-03-18 19:30:17,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 19:30:17,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 19:30:17,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 19:30:17,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 19:30:17,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:30:17" (1/1) ... [2022-03-18 19:30:17,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:30:17" (1/1) ... [2022-03-18 19:30:17,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:30:17" (1/1) ... [2022-03-18 19:30:17,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:30:17" (1/1) ... [2022-03-18 19:30:17,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:30:17" (1/1) ... [2022-03-18 19:30:17,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:30:17" (1/1) ... [2022-03-18 19:30:17,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:30:17" (1/1) ... [2022-03-18 19:30:17,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 19:30:17,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 19:30:17,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 19:30:17,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 19:30:17,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:30:17" (1/1) ... [2022-03-18 19:30:17,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 19:30:17,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 19:30:17,344 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-18 19:30:17,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-18 19:30:17,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 19:30:17,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 19:30:17,372 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 19:30:17,372 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 19:30:17,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 19:30:17,373 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 19:30:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 19:30:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 19:30:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 19:30:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 19:30:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 19:30:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 19:30:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 19:30:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 19:30:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 19:30:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 19:30:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 19:30:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 19:30:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 19:30:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 19:30:17,411 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 19:30:17,412 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 19:30:17,504 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 19:30:17,513 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 19:30:17,513 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 19:30:17,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 07:30:17 BoogieIcfgContainer [2022-03-18 19:30:17,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 19:30:17,515 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-18 19:30:17,515 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-18 19:30:17,516 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-18 19:30:17,518 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 07:30:17" (1/1) ... [2022-03-18 19:30:17,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 07:30:17 BasicIcfg [2022-03-18 19:30:17,541 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-18 19:30:17,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 19:30:17,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 19:30:17,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 19:30:17,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 07:30:17" (1/4) ... [2022-03-18 19:30:17,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389c9a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 07:30:17, skipping insertion in model container [2022-03-18 19:30:17,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:30:17" (2/4) ... [2022-03-18 19:30:17,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389c9a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 07:30:17, skipping insertion in model container [2022-03-18 19:30:17,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 07:30:17" (3/4) ... [2022-03-18 19:30:17,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389c9a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 07:30:17, skipping insertion in model container [2022-03-18 19:30:17,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 07:30:17" (4/4) ... [2022-03-18 19:30:17,554 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound2.cJordan [2022-03-18 19:30:17,557 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-18 19:30:17,557 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 19:30:17,588 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 19:30:17,592 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-18 19:30:17,592 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 19:30:17,609 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) [2022-03-18 19:30:17,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-18 19:30:17,618 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 19:30:17,618 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 19:30:17,619 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 19:30:17,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 19:30:17,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1950279688, now seen corresponding path program 1 times [2022-03-18 19:30:17,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 19:30:17,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063727751] [2022-03-18 19:30:17,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 19:30:17,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 19:30:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 19:30:17,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 19:30:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 19:30:17,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 19:30:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 19:30:17,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 19:30:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 19:30:17,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 19:30:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 19:30:17,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 19:30:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 19:30:17,824 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-18 19:30:17,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 19:30:17,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063727751] [2022-03-18 19:30:17,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063727751] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 19:30:17,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 19:30:17,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 19:30:17,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330919799] [2022-03-18 19:30:17,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 19:30:17,829 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 19:30:17,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 19:30:17,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 19:30:17,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 19:30:17,854 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) [2022-03-18 19:30:17,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 19:30:17,909 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-03-18 19:30:17,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 19:30:17,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-03-18 19:30:17,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 19:30:17,916 INFO L225 Difference]: With dead ends: 32 [2022-03-18 19:30:17,916 INFO L226 Difference]: Without dead ends: 27 [2022-03-18 19:30:17,917 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 19:30:17,921 INFO L912 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 [2022-03-18 19:30:17,921 INFO L913 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] [2022-03-18 19:30:17,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-03-18 19:30:17,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-03-18 19:30:17,944 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) [2022-03-18 19:30:17,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-03-18 19:30:17,945 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2022-03-18 19:30:17,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 19:30:17,945 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-03-18 19:30:17,945 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 19:30:17,946 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-03-18 19:30:17,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-18 19:30:17,946 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 19:30:17,947 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 19:30:17,947 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 19:30:17,947 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 19:30:17,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 19:30:17,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1010552682, now seen corresponding path program 1 times [2022-03-18 19:30:17,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 19:30:17,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948889907] [2022-03-18 19:30:17,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 19:30:17,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 19:30:17,964 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 19:30:17,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [504283430] [2022-03-18 19:30:17,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 19:30:17,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 19:30:17,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 19:30:17,965 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 19:30:18,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 19:30:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 19:30:18,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-18 19:30:18,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 19:30:18,228 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 19:30:18,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 19:30:18,348 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-18 19:30:18,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 19:30:18,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948889907] [2022-03-18 19:30:18,349 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 19:30:18,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504283430] [2022-03-18 19:30:18,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504283430] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-18 19:30:18,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 19:30:18,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-03-18 19:30:18,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985892318] [2022-03-18 19:30:18,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 19:30:18,355 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 19:30:18,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 19:30:18,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 19:30:18,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-18 19:30:18,358 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) [2022-03-18 19:30:18,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 19:30:18,391 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-03-18 19:30:18,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 19:30:18,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2022-03-18 19:30:18,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 19:30:18,396 INFO L225 Difference]: With dead ends: 31 [2022-03-18 19:30:18,396 INFO L226 Difference]: Without dead ends: 29 [2022-03-18 19:30:18,396 INFO L911 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 [2022-03-18 19:30:18,397 INFO L912 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 [2022-03-18 19:30:18,397 INFO L913 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] [2022-03-18 19:30:18,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-03-18 19:30:18,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-03-18 19:30:18,400 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) [2022-03-18 19:30:18,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-03-18 19:30:18,401 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 33 [2022-03-18 19:30:18,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 19:30:18,402 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-03-18 19:30:18,402 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 19:30:18,402 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-03-18 19:30:18,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-18 19:30:18,403 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 19:30:18,403 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 19:30:18,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-18 19:30:18,603 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 19:30:18,604 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 19:30:18,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 19:30:18,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1070211269, now seen corresponding path program 1 times [2022-03-18 19:30:18,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 19:30:18,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465650076] [2022-03-18 19:30:18,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 19:30:18,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 19:30:18,619 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 19:30:18,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [554620486] [2022-03-18 19:30:18,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 19:30:18,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 19:30:18,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 19:30:18,623 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 19:30:18,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 19:30:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 19:30:18,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-18 19:30:18,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 19:30:18,864 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-18 19:30:18,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 19:30:18,985 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-18 19:30:18,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 19:30:18,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465650076] [2022-03-18 19:30:18,985 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 19:30:18,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554620486] [2022-03-18 19:30:18,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554620486] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 19:30:18,986 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 19:30:18,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-03-18 19:30:18,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500169306] [2022-03-18 19:30:18,986 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-18 19:30:18,986 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 19:30:18,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 19:30:18,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 19:30:18,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-18 19:30:18,987 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) [2022-03-18 19:30:19,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 19:30:19,084 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-03-18 19:30:19,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 19:30:19,085 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 [2022-03-18 19:30:19,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 19:30:19,086 INFO L225 Difference]: With dead ends: 27 [2022-03-18 19:30:19,086 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 19:30:19,087 INFO L911 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 [2022-03-18 19:30:19,089 INFO L912 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 [2022-03-18 19:30:19,092 INFO L913 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] [2022-03-18 19:30:19,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 19:30:19,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 19:30:19,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-18 19:30:19,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 19:30:19,101 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2022-03-18 19:30:19,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 19:30:19,102 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 19:30:19,102 INFO L479 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) [2022-03-18 19:30:19,102 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 19:30:19,102 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 19:30:19,104 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 19:30:19,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-18 19:30:19,317 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-18 19:30:19,319 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-18 19:30:19,321 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 19:30:19,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 07:30:19 BasicIcfg [2022-03-18 19:30:19,324 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 19:30:19,325 INFO L158 Benchmark]: Toolchain (without parser) took 2248.36ms. Allocated memory was 213.9MB in the beginning and 270.5MB in the end (delta: 56.6MB). Free memory was 164.6MB in the beginning and 197.7MB in the end (delta: -33.1MB). Peak memory consumption was 24.8MB. Max. memory is 8.0GB. [2022-03-18 19:30:19,325 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 213.9MB. Free memory is still 180.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 19:30:19,325 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.74ms. Allocated memory is still 213.9MB. Free memory was 164.5MB in the beginning and 189.7MB in the end (delta: -25.3MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. [2022-03-18 19:30:19,325 INFO L158 Benchmark]: Boogie Preprocessor took 16.81ms. Allocated memory is still 213.9MB. Free memory was 189.7MB in the beginning and 188.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 19:30:19,325 INFO L158 Benchmark]: RCFGBuilder took 207.42ms. Allocated memory is still 213.9MB. Free memory was 188.1MB in the beginning and 178.2MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-18 19:30:19,326 INFO L158 Benchmark]: IcfgTransformer took 26.56ms. Allocated memory is still 213.9MB. Free memory was 178.2MB in the beginning and 177.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 19:30:19,326 INFO L158 Benchmark]: TraceAbstraction took 1781.97ms. Allocated memory was 213.9MB in the beginning and 270.5MB in the end (delta: 56.6MB). Free memory was 176.5MB in the beginning and 197.7MB in the end (delta: -21.2MB). Peak memory consumption was 37.0MB. Max. memory is 8.0GB. [2022-03-18 19:30:19,327 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 213.9MB. Free memory is still 180.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 211.74ms. Allocated memory is still 213.9MB. Free memory was 164.5MB in the beginning and 189.7MB in the end (delta: -25.3MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.81ms. Allocated memory is still 213.9MB. Free memory was 189.7MB in the beginning and 188.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 207.42ms. Allocated memory is still 213.9MB. Free memory was 188.1MB in the beginning and 178.2MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 26.56ms. Allocated memory is still 213.9MB. Free memory was 178.2MB in the beginning and 177.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1781.97ms. Allocated memory was 213.9MB in the beginning and 270.5MB in the end (delta: 56.6MB). Free memory was 176.5MB in the beginning and 197.7MB in the end (delta: -21.2MB). Peak memory consumption was 37.0MB. 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: 1.7s, 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, 0.7s 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! [2022-03-18 19:30:19,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...