/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 05:54:52,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 05:54:52,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 05:54:52,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 05:54:52,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 05:54:52,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 05:54:52,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 05:54:52,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 05:54:52,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 05:54:52,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 05:54:52,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 05:54:52,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 05:54:52,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 05:54:52,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 05:54:52,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 05:54:52,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 05:54:52,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 05:54:52,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 05:54:52,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 05:54:52,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 05:54:52,733 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 05:54:52,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 05:54:52,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 05:54:52,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 05:54:52,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 05:54:52,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 05:54:52,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 05:54:52,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 05:54:52,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 05:54:52,748 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-20 05:54:52,756 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 05:54:52,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 05:54:52,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 05:54:52,757 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 05:54:52,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 05:54:52,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 05:54:52,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 05:54:52,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 05:54:52,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 05:54:52,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 05:54:52,759 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 05:54:52,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 05:54:52,759 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 05:54:52,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 05:54:52,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 05:54:52,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 05:54:52,759 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 05:54:52,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 05:54:52,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 05:54:52,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 05:54:52,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 05:54:52,760 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 05:54:52,760 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 05:54:52,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 05:54:52,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 05:54:52,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 05:54:52,973 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 05:54:52,973 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 05:54:52,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound10.c [2022-03-20 05:54:53,018 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe52be257/0a63a4c2e7334d81824c32879f55523b/FLAG813e6c49e [2022-03-20 05:54:53,376 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 05:54:53,376 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound10.c [2022-03-20 05:54:53,381 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe52be257/0a63a4c2e7334d81824c32879f55523b/FLAG813e6c49e [2022-03-20 05:54:53,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe52be257/0a63a4c2e7334d81824c32879f55523b [2022-03-20 05:54:53,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 05:54:53,804 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 05:54:53,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 05:54:53,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 05:54:53,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 05:54:53,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:54:53" (1/1) ... [2022-03-20 05:54:53,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1551e0c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:54:53, skipping insertion in model container [2022-03-20 05:54:53,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:54:53" (1/1) ... [2022-03-20 05:54:53,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 05:54:53,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 05:54:53,969 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound10.c[525,538] [2022-03-20 05:54:53,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 05:54:53,990 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 05:54:53,999 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound10.c[525,538] [2022-03-20 05:54:54,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 05:54:54,022 INFO L208 MainTranslator]: Completed translation [2022-03-20 05:54:54,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:54:54 WrapperNode [2022-03-20 05:54:54,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 05:54:54,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 05:54:54,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 05:54:54,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 05:54:54,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:54:54" (1/1) ... [2022-03-20 05:54:54,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:54:54" (1/1) ... [2022-03-20 05:54:54,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:54:54" (1/1) ... [2022-03-20 05:54:54,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:54:54" (1/1) ... [2022-03-20 05:54:54,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:54:54" (1/1) ... [2022-03-20 05:54:54,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:54:54" (1/1) ... [2022-03-20 05:54:54,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:54:54" (1/1) ... [2022-03-20 05:54:54,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 05:54:54,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 05:54:54,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 05:54:54,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 05:54:54,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:54:54" (1/1) ... [2022-03-20 05:54:54,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 05:54:54,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:54:54,079 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) [2022-03-20 05:54:54,101 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 [2022-03-20 05:54:54,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 05:54:54,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 05:54:54,116 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 05:54:54,116 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 05:54:54,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 05:54:54,117 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 05:54:54,117 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 05:54:54,117 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 05:54:54,117 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 05:54:54,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 05:54:54,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 05:54:54,117 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 05:54:54,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 05:54:54,118 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 05:54:54,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 05:54:54,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 05:54:54,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 05:54:54,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 05:54:54,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 05:54:54,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 05:54:54,162 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 05:54:54,163 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 05:54:54,256 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 05:54:54,260 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 05:54:54,260 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 05:54:54,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:54:54 BoogieIcfgContainer [2022-03-20 05:54:54,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 05:54:54,262 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 05:54:54,262 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 05:54:54,280 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 05:54:54,282 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:54:54" (1/1) ... [2022-03-20 05:54:54,283 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-03-20 05:54:54,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 05:54:54 BasicIcfg [2022-03-20 05:54:54,294 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 05:54:54,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 05:54:54,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 05:54:54,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 05:54:54,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 05:54:53" (1/4) ... [2022-03-20 05:54:54,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dded276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:54:54, skipping insertion in model container [2022-03-20 05:54:54,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:54:54" (2/4) ... [2022-03-20 05:54:54,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dded276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:54:54, skipping insertion in model container [2022-03-20 05:54:54,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:54:54" (3/4) ... [2022-03-20 05:54:54,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dded276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 05:54:54, skipping insertion in model container [2022-03-20 05:54:54,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 05:54:54" (4/4) ... [2022-03-20 05:54:54,307 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_valuebound10.cJordan [2022-03-20 05:54:54,311 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-20 05:54:54,311 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 05:54:54,374 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 05:54:54,383 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 [2022-03-20 05:54:54,383 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 05:54:54,397 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-20 05:54:54,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-20 05:54:54,402 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:54:54,402 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:54:54,403 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:54:54,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:54:54,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1338008438, now seen corresponding path program 1 times [2022-03-20 05:54:54,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:54:54,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900244645] [2022-03-20 05:54:54,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:54:54,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:54:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:54:54,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 05:54:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:54:54,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 05:54:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:54:54,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 05:54:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:54:54,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 05:54:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:54:54,612 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-20 05:54:54,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:54:54,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900244645] [2022-03-20 05:54:54,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900244645] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 05:54:54,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 05:54:54,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 05:54:54,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295974368] [2022-03-20 05:54:54,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 05:54:54,617 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 05:54:54,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:54:54,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 05:54:54,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 05:54:54,639 INFO L87 Difference]: Start difference. First operand has 31 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-20 05:54:54,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:54:54,689 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-03-20 05:54:54,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 05:54:54,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-03-20 05:54:54,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:54:54,695 INFO L225 Difference]: With dead ends: 31 [2022-03-20 05:54:54,695 INFO L226 Difference]: Without dead ends: 26 [2022-03-20 05:54:54,697 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 05:54:54,701 INFO L913 BasicCegarLoop]: 29 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 05:54:54,702 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 32 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 05:54:54,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-03-20 05:54:54,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-03-20 05:54:54,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-20 05:54:54,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-03-20 05:54:54,726 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 29 [2022-03-20 05:54:54,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:54:54,727 INFO L478 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-03-20 05:54:54,728 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-20 05:54:54,728 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-03-20 05:54:54,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-20 05:54:54,729 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:54:54,729 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:54:54,729 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 05:54:54,730 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:54:54,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:54:54,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1251333530, now seen corresponding path program 1 times [2022-03-20 05:54:54,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:54:54,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019487451] [2022-03-20 05:54:54,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:54:54,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:54:54,762 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:54:54,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1527067627] [2022-03-20 05:54:54,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:54:54,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:54:54,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:54:54,765 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) [2022-03-20 05:54:54,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 05:54:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:54:54,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-20 05:54:54,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:54:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-20 05:54:54,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 05:54:54,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:54:54,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019487451] [2022-03-20 05:54:54,937 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:54:54,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527067627] [2022-03-20 05:54:54,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527067627] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 05:54:54,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 05:54:54,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 05:54:54,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009510427] [2022-03-20 05:54:54,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 05:54:54,938 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 05:54:54,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:54:54,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 05:54:54,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 05:54:54,944 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-20 05:54:54,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:54:54,972 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-03-20 05:54:54,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 05:54:54,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2022-03-20 05:54:54,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:54:54,973 INFO L225 Difference]: With dead ends: 34 [2022-03-20 05:54:54,973 INFO L226 Difference]: Without dead ends: 33 [2022-03-20 05:54:54,974 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 05:54:54,974 INFO L913 BasicCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 05:54:54,975 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 99 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 05:54:54,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-20 05:54:54,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-03-20 05:54:54,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-20 05:54:54,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-03-20 05:54:54,979 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 29 [2022-03-20 05:54:54,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:54:54,980 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-03-20 05:54:54,981 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-20 05:54:54,981 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-03-20 05:54:54,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-20 05:54:54,981 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:54:54,982 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:54:54,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 05:54:55,184 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 [2022-03-20 05:54:55,185 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:54:55,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:54:55,186 INFO L85 PathProgramCache]: Analyzing trace with hash -284720885, now seen corresponding path program 1 times [2022-03-20 05:54:55,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:54:55,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547486588] [2022-03-20 05:54:55,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:54:55,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:54:55,197 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:54:55,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1690069760] [2022-03-20 05:54:55,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:54:55,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:54:55,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:54:55,199 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) [2022-03-20 05:54:55,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 05:54:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:54:55,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-20 05:54:55,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:54:55,472 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-20 05:54:55,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:54:55,777 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-20 05:54:55,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:54:55,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547486588] [2022-03-20 05:54:55,777 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:54:55,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690069760] [2022-03-20 05:54:55,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690069760] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 05:54:55,777 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 05:54:55,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-03-20 05:54:55,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051591192] [2022-03-20 05:54:55,778 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 05:54:55,778 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 05:54:55,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:54:55,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 05:54:55,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-03-20 05:54:55,779 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 05:54:56,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:54:56,264 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-03-20 05:54:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 05:54:56,264 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 36 [2022-03-20 05:54:56,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:54:56,265 INFO L225 Difference]: With dead ends: 35 [2022-03-20 05:54:56,265 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 05:54:56,265 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-20 05:54:56,266 INFO L913 BasicCegarLoop]: 25 mSDtfsCounter, 13 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 05:54:56,266 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 133 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 05:54:56,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 05:54:56,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 05:54:56,267 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) [2022-03-20 05:54:56,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 05:54:56,267 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2022-03-20 05:54:56,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:54:56,267 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 05:54:56,267 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 05:54:56,268 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 05:54:56,268 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 05:54:56,269 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 05:54:56,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 05:54:56,470 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 [2022-03-20 05:54:56,473 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-20 05:54:56,474 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 05:54:56,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 05:54:56 BasicIcfg [2022-03-20 05:54:56,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 05:54:56,476 INFO L158 Benchmark]: Toolchain (without parser) took 2672.14ms. Allocated memory was 205.5MB in the beginning and 250.6MB in the end (delta: 45.1MB). Free memory was 156.6MB in the beginning and 197.4MB in the end (delta: -40.8MB). Peak memory consumption was 5.8MB. Max. memory is 8.0GB. [2022-03-20 05:54:56,476 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 205.5MB. Free memory is still 172.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 05:54:56,477 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.89ms. Allocated memory is still 205.5MB. Free memory was 156.3MB in the beginning and 181.2MB in the end (delta: -24.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-20 05:54:56,477 INFO L158 Benchmark]: Boogie Preprocessor took 31.56ms. Allocated memory is still 205.5MB. Free memory was 181.2MB in the beginning and 179.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 05:54:56,477 INFO L158 Benchmark]: RCFGBuilder took 204.14ms. Allocated memory is still 205.5MB. Free memory was 179.5MB in the beginning and 169.2MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-20 05:54:56,477 INFO L158 Benchmark]: IcfgTransformer took 32.68ms. Allocated memory is still 205.5MB. Free memory was 169.2MB in the beginning and 168.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 05:54:56,478 INFO L158 Benchmark]: TraceAbstraction took 2172.69ms. Allocated memory was 205.5MB in the beginning and 250.6MB in the end (delta: 45.1MB). Free memory was 167.6MB in the beginning and 197.4MB in the end (delta: -29.8MB). Peak memory consumption was 17.9MB. Max. memory is 8.0GB. [2022-03-20 05:54:56,479 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 205.5MB. Free memory is still 172.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 216.89ms. Allocated memory is still 205.5MB. Free memory was 156.3MB in the beginning and 181.2MB in the end (delta: -24.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.56ms. Allocated memory is still 205.5MB. Free memory was 181.2MB in the beginning and 179.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 204.14ms. Allocated memory is still 205.5MB. Free memory was 179.5MB in the beginning and 169.2MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 32.68ms. Allocated memory is still 205.5MB. Free memory was 169.2MB in the beginning and 168.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2172.69ms. Allocated memory was 205.5MB in the beginning and 250.6MB in the end (delta: 45.1MB). Free memory was 167.6MB in the beginning and 197.4MB in the end (delta: -29.8MB). Peak memory consumption was 17.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 264 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 184 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 67 IncrementalHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 80 mSDtfsCounter, 67 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 3 NumberOfNonLiveVariables, 209 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 52/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-20 05:54:56,497 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...