/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_unwindbound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 14:44:32,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 14:44:32,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 14:44:32,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 14:44:32,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 14:44:32,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 14:44:32,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 14:44:32,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 14:44:32,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 14:44:32,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 14:44:32,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 14:44:32,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 14:44:32,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 14:44:32,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 14:44:32,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 14:44:32,775 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 14:44:32,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 14:44:32,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 14:44:32,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 14:44:32,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 14:44:32,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 14:44:32,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 14:44:32,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 14:44:32,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 14:44:32,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 14:44:32,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 14:44:32,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 14:44:32,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 14:44:32,798 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 14:44:32,812 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 14:44:32,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 14:44:32,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 14:44:32,814 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 14:44:32,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 14:44:32,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 14:44:32,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 14:44:32,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 14:44:32,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 14:44:32,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 14:44:32,815 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 14:44:32,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 14:44:32,816 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 14:44:32,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 14:44:32,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 14:44:32,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 14:44:32,816 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 14:44:32,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 14:44:32,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 14:44:32,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 14:44:32,817 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 14:44:32,817 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 14:44:32,817 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 14:44:33,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 14:44:33,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 14:44:33,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 14:44:33,048 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 14:44:33,048 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 14:44:33,049 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_unwindbound50.c [2022-01-31 14:44:33,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c27c17f2/238b7f4374be415883a8262ea8fcdf0f/FLAG812f06f89 [2022-01-31 14:44:33,453 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 14:44:33,453 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_unwindbound50.c [2022-01-31 14:44:33,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c27c17f2/238b7f4374be415883a8262ea8fcdf0f/FLAG812f06f89 [2022-01-31 14:44:33,906 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c27c17f2/238b7f4374be415883a8262ea8fcdf0f [2022-01-31 14:44:33,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 14:44:33,908 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 14:44:33,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 14:44:33,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 14:44:33,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 14:44:33,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 02:44:33" (1/1) ... [2022-01-31 14:44:33,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@375cfe99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:44:33, skipping insertion in model container [2022-01-31 14:44:33,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 02:44:33" (1/1) ... [2022-01-31 14:44:33,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 14:44:33,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 14:44:34,035 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_unwindbound50.c[546,559] [2022-01-31 14:44:34,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 14:44:34,065 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 14:44:34,072 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_unwindbound50.c[546,559] [2022-01-31 14:44:34,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 14:44:34,093 INFO L208 MainTranslator]: Completed translation [2022-01-31 14:44:34,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:44:34 WrapperNode [2022-01-31 14:44:34,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 14:44:34,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 14:44:34,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 14:44:34,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 14:44:34,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:44:34" (1/1) ... [2022-01-31 14:44:34,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:44:34" (1/1) ... [2022-01-31 14:44:34,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:44:34" (1/1) ... [2022-01-31 14:44:34,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:44:34" (1/1) ... [2022-01-31 14:44:34,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:44:34" (1/1) ... [2022-01-31 14:44:34,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:44:34" (1/1) ... [2022-01-31 14:44:34,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:44:34" (1/1) ... [2022-01-31 14:44:34,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 14:44:34,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 14:44:34,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 14:44:34,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 14:44:34,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:44:34" (1/1) ... [2022-01-31 14:44:34,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 14:44:34,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 14:44:34,148 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) [2022-01-31 14:44:34,165 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 [2022-01-31 14:44:34,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 14:44:34,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 14:44:34,177 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 14:44:34,177 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 14:44:34,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 14:44:34,177 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 14:44:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 14:44:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 14:44:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 14:44:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 14:44:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 14:44:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 14:44:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 14:44:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 14:44:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 14:44:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 14:44:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 14:44:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 14:44:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 14:44:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 14:44:34,247 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 14:44:34,248 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 14:44:34,348 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 14:44:34,353 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 14:44:34,353 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-31 14:44:34,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 02:44:34 BoogieIcfgContainer [2022-01-31 14:44:34,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 14:44:34,355 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 14:44:34,355 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 14:44:34,356 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 14:44:34,359 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 02:44:34" (1/1) ... [2022-01-31 14:44:34,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 02:44:34 BasicIcfg [2022-01-31 14:44:34,374 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 14:44:34,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 14:44:34,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 14:44:34,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 14:44:34,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 02:44:33" (1/4) ... [2022-01-31 14:44:34,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c206104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 02:44:34, skipping insertion in model container [2022-01-31 14:44:34,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:44:34" (2/4) ... [2022-01-31 14:44:34,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c206104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 02:44:34, skipping insertion in model container [2022-01-31 14:44:34,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 02:44:34" (3/4) ... [2022-01-31 14:44:34,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c206104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 02:44:34, skipping insertion in model container [2022-01-31 14:44:34,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 02:44:34" (4/4) ... [2022-01-31 14:44:34,381 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_unwindbound50.cJordan [2022-01-31 14:44:34,385 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 14:44:34,385 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 14:44:34,430 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 14:44:34,435 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 [2022-01-31 14:44:34,435 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 14:44:34,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 14:44:34,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-31 14:44:34,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 14:44:34,457 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 14:44:34,458 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 14:44:34,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 14:44:34,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1175629711, now seen corresponding path program 1 times [2022-01-31 14:44:34,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 14:44:34,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226573884] [2022-01-31 14:44:34,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:44:34,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 14:44:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:44:34,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 14:44:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:44:34,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 14:44:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:44:34,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 14:44:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:44:34,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 14:44:34,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 14:44:34,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226573884] [2022-01-31 14:44:34,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226573884] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 14:44:34,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 14:44:34,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 14:44:34,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733778511] [2022-01-31 14:44:34,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 14:44:34,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 14:44:34,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 14:44:34,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 14:44:34,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 14:44:34,617 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 14:44:34,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 14:44:34,663 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-01-31 14:44:34,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 14:44:34,665 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-01-31 14:44:34,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 14:44:34,670 INFO L225 Difference]: With dead ends: 31 [2022-01-31 14:44:34,670 INFO L226 Difference]: Without dead ends: 26 [2022-01-31 14:44:34,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 14:44:34,673 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 14:44:34,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 34 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 14:44:34,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-31 14:44:34,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-01-31 14:44:34,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 14:44:34,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-01-31 14:44:34,695 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 23 [2022-01-31 14:44:34,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 14:44:34,695 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-01-31 14:44:34,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 14:44:34,695 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-01-31 14:44:34,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-31 14:44:34,696 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 14:44:34,696 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 14:44:34,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 14:44:34,697 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 14:44:34,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 14:44:34,697 INFO L85 PathProgramCache]: Analyzing trace with hash 165914577, now seen corresponding path program 1 times [2022-01-31 14:44:34,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 14:44:34,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082442729] [2022-01-31 14:44:34,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:44:34,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 14:44:34,715 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 14:44:34,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2109138125] [2022-01-31 14:44:34,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:44:34,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:44:34,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 14:44:34,717 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) [2022-01-31 14:44:34,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 14:44:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:44:34,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-31 14:44:34,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 14:44:34,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 14:44:34,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 14:44:34,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 14:44:34,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082442729] [2022-01-31 14:44:34,865 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 14:44:34,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109138125] [2022-01-31 14:44:34,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109138125] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 14:44:34,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 14:44:34,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 14:44:34,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996810443] [2022-01-31 14:44:34,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 14:44:34,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 14:44:34,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 14:44:34,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 14:44:34,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 14:44:34,868 INFO L87 Difference]: Start difference. First operand 25 states and 28 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-31 14:44:34,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 14:44:34,908 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-01-31 14:44:34,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 14:44:34,909 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-01-31 14:44:34,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 14:44:34,911 INFO L225 Difference]: With dead ends: 34 [2022-01-31 14:44:34,912 INFO L226 Difference]: Without dead ends: 34 [2022-01-31 14:44:34,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 14:44:34,914 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 7 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 14:44:34,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 92 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 14:44:34,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-01-31 14:44:34,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2022-01-31 14:44:34,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 14:44:34,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-01-31 14:44:34,919 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2022-01-31 14:44:34,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 14:44:34,919 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-01-31 14:44:34,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-31 14:44:34,920 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-01-31 14:44:34,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-31 14:44:34,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 14:44:34,920 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 14:44:34,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 14:44:35,135 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 [2022-01-31 14:44:35,136 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 14:44:35,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 14:44:35,136 INFO L85 PathProgramCache]: Analyzing trace with hash 815968169, now seen corresponding path program 1 times [2022-01-31 14:44:35,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 14:44:35,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933638347] [2022-01-31 14:44:35,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:44:35,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 14:44:35,147 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 14:44:35,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [460306652] [2022-01-31 14:44:35,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:44:35,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:44:35,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 14:44:35,150 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) [2022-01-31 14:44:35,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 14:44:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:44:35,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-31 14:44:35,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 14:44:35,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 14:44:35,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 14:44:35,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 14:44:35,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933638347] [2022-01-31 14:44:35,256 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 14:44:35,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460306652] [2022-01-31 14:44:35,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460306652] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 14:44:35,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 14:44:35,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 14:44:35,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367596643] [2022-01-31 14:44:35,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 14:44:35,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 14:44:35,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 14:44:35,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 14:44:35,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 14:44:35,258 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 14:44:35,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 14:44:35,265 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-01-31 14:44:35,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 14:44:35,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-01-31 14:44:35,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 14:44:35,266 INFO L225 Difference]: With dead ends: 32 [2022-01-31 14:44:35,267 INFO L226 Difference]: Without dead ends: 32 [2022-01-31 14:44:35,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 14:44:35,268 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 14:44:35,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 14:44:35,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-31 14:44:35,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-01-31 14:44:35,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 14:44:35,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-01-31 14:44:35,271 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2022-01-31 14:44:35,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 14:44:35,272 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-01-31 14:44:35,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 14:44:35,272 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-01-31 14:44:35,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-31 14:44:35,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 14:44:35,272 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 14:44:35,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 14:44:35,487 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 [2022-01-31 14:44:35,488 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 14:44:35,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 14:44:35,488 INFO L85 PathProgramCache]: Analyzing trace with hash -974402257, now seen corresponding path program 1 times [2022-01-31 14:44:35,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 14:44:35,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306330633] [2022-01-31 14:44:35,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:44:35,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 14:44:35,498 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 14:44:35,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634666700] [2022-01-31 14:44:35,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:44:35,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:44:35,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 14:44:35,499 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 14:44:35,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-31 14:44:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:44:35,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-31 14:44:35,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 14:44:35,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 14:44:35,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 14:44:35,846 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 14:44:35,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 14:44:35,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306330633] [2022-01-31 14:44:35,846 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 14:44:35,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634666700] [2022-01-31 14:44:35,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634666700] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 14:44:35,847 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 14:44:35,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-01-31 14:44:35,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954411614] [2022-01-31 14:44:35,847 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 14:44:35,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 14:44:35,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 14:44:35,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 14:44:35,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-31 14:44:35,848 INFO L87 Difference]: Start difference. First operand 32 states and 35 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-31 14:44:35,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 14:44:35,969 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2022-01-31 14:44:35,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 14:44:35,970 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2022-01-31 14:44:35,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 14:44:35,971 INFO L225 Difference]: With dead ends: 30 [2022-01-31 14:44:35,971 INFO L226 Difference]: Without dead ends: 0 [2022-01-31 14:44:35,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-01-31 14:44:35,972 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 10 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 14:44:35,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 129 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 14:44:35,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-31 14:44:35,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-31 14:44:35,973 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) [2022-01-31 14:44:35,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-31 14:44:35,973 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2022-01-31 14:44:35,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 14:44:35,973 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-31 14:44:35,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-31 14:44:35,973 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-31 14:44:35,973 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-31 14:44:35,975 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 14:44:35,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-31 14:44:36,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:44:36,195 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-01-31 14:44:36,196 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 14:44:36,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 02:44:36 BasicIcfg [2022-01-31 14:44:36,197 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 14:44:36,198 INFO L158 Benchmark]: Toolchain (without parser) took 2289.55ms. Allocated memory was 180.4MB in the beginning and 249.6MB in the end (delta: 69.2MB). Free memory was 125.2MB in the beginning and 124.4MB in the end (delta: 815.6kB). Peak memory consumption was 69.7MB. Max. memory is 8.0GB. [2022-01-31 14:44:36,198 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 180.4MB. Free memory is still 141.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 14:44:36,198 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.92ms. Allocated memory was 180.4MB in the beginning and 249.6MB in the end (delta: 69.2MB). Free memory was 125.0MB in the beginning and 221.9MB in the end (delta: -96.9MB). Peak memory consumption was 12.5MB. Max. memory is 8.0GB. [2022-01-31 14:44:36,198 INFO L158 Benchmark]: Boogie Preprocessor took 30.29ms. Allocated memory is still 249.6MB. Free memory was 221.9MB in the beginning and 220.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 14:44:36,199 INFO L158 Benchmark]: RCFGBuilder took 229.78ms. Allocated memory is still 249.6MB. Free memory was 220.1MB in the beginning and 209.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-31 14:44:36,199 INFO L158 Benchmark]: IcfgTransformer took 18.87ms. Allocated memory is still 249.6MB. Free memory was 209.3MB in the beginning and 208.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 14:44:36,199 INFO L158 Benchmark]: TraceAbstraction took 1821.55ms. Allocated memory is still 249.6MB. Free memory was 207.7MB in the beginning and 124.4MB in the end (delta: 83.4MB). Peak memory consumption was 82.8MB. Max. memory is 8.0GB. [2022-01-31 14:44:36,200 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 180.4MB. Free memory is still 141.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 184.92ms. Allocated memory was 180.4MB in the beginning and 249.6MB in the end (delta: 69.2MB). Free memory was 125.0MB in the beginning and 221.9MB in the end (delta: -96.9MB). Peak memory consumption was 12.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.29ms. Allocated memory is still 249.6MB. Free memory was 221.9MB in the beginning and 220.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 229.78ms. Allocated memory is still 249.6MB. Free memory was 220.1MB in the beginning and 209.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 18.87ms. Allocated memory is still 249.6MB. Free memory was 209.3MB in the beginning and 208.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1821.55ms. Allocated memory is still 249.6MB. Free memory was 207.7MB in the beginning and 124.4MB in the end (delta: 83.4MB). Peak memory consumption was 82.8MB. 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, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 319 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 218 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 101 mSDtfsCounter, 72 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 98 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, InterpolantAutomatonStates: 18, 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, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 125 ConstructedInterpolants, 1 QuantifiedInterpolants, 272 SizeOfPredicates, 5 NumberOfNonLiveVariables, 293 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 22/24 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! [2022-01-31 14:44:36,231 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...