/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/mannadiv_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 18:06:36,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 18:06:36,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 18:06:36,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-17 18:06:36,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-17 18:06:36,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-17 18:06:36,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-17 18:06:36,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-17 18:06:36,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-17 18:06:36,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-17 18:06:36,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-17 18:06:36,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-17 18:06:36,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-17 18:06:36,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-17 18:06:36,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-17 18:06:36,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-17 18:06:36,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-17 18:06:36,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-17 18:06:36,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-17 18:06:36,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-17 18:06:36,568 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-17 18:06:36,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-17 18:06:36,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-17 18:06:36,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-17 18:06:36,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-17 18:06:36,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-17 18:06:36,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-17 18:06:36,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-17 18:06:36,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-17 18:06:36,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-17 18:06:36,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-17 18:06:36,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-17 18:06:36,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-17 18:06:36,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-17 18:06:36,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 18:06:36,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 18:06:36,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 18:06:36,582 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-17 18:06:36,590 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 18:06:36,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 18:06:36,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 18:06:36,592 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-17 18:06:36,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 18:06:36,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-17 18:06:36,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 18:06:36,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 18:06:36,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 18:06:36,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 18:06:36,593 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-17 18:06:36,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 18:06:36,593 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 18:06:36,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 18:06:36,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 18:06:36,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 18:06:36,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-17 18:06:36,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 18:06:36,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 18:06:36,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 18:06:36,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 18:06:36,594 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 18:06:36,594 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 18:06:36,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 18:06:36,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 18:06:36,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 18:06:36,779 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 18:06:36,779 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 18:06:36,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound10.c [2022-03-17 18:06:36,836 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e5af3591/2b2758822b7646e3a2051868f9dbc12f/FLAGfc9d132bc [2022-03-17 18:06:37,179 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 18:06:37,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound10.c [2022-03-17 18:06:37,183 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e5af3591/2b2758822b7646e3a2051868f9dbc12f/FLAGfc9d132bc [2022-03-17 18:06:37,633 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e5af3591/2b2758822b7646e3a2051868f9dbc12f [2022-03-17 18:06:37,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 18:06:37,635 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 18:06:37,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 18:06:37,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 18:06:37,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 18:06:37,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:06:37" (1/1) ... [2022-03-17 18:06:37,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48f0b33f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:37, skipping insertion in model container [2022-03-17 18:06:37,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:06:37" (1/1) ... [2022-03-17 18:06:37,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 18:06:37,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 18:06:37,782 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/mannadiv_unwindbound10.c[573,586] [2022-03-17 18:06:37,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 18:06:37,813 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 18:06:37,823 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/mannadiv_unwindbound10.c[573,586] [2022-03-17 18:06:37,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 18:06:37,842 INFO L208 MainTranslator]: Completed translation [2022-03-17 18:06:37,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:37 WrapperNode [2022-03-17 18:06:37,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 18:06:37,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 18:06:37,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 18:06:37,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 18:06:37,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:37" (1/1) ... [2022-03-17 18:06:37,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:37" (1/1) ... [2022-03-17 18:06:37,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:37" (1/1) ... [2022-03-17 18:06:37,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:37" (1/1) ... [2022-03-17 18:06:37,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:37" (1/1) ... [2022-03-17 18:06:37,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:37" (1/1) ... [2022-03-17 18:06:37,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:37" (1/1) ... [2022-03-17 18:06:37,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 18:06:37,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 18:06:37,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 18:06:37,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 18:06:37,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:37" (1/1) ... [2022-03-17 18:06:37,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 18:06:37,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 18:06:37,896 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) [2022-03-17 18:06:37,913 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 [2022-03-17 18:06:37,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 18:06:37,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 18:06:37,929 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 18:06:37,929 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-17 18:06:37,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-17 18:06:37,929 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 18:06:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 18:06:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 18:06:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 18:06:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 18:06:37,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-17 18:06:37,930 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-17 18:06:37,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-17 18:06:37,930 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 18:06:37,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 18:06:37,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 18:06:37,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 18:06:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 18:06:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 18:06:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 18:06:37,973 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 18:06:37,974 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 18:06:38,086 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 18:06:38,093 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 18:06:38,093 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-17 18:06:38,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 06:06:38 BoogieIcfgContainer [2022-03-17 18:06:38,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 18:06:38,095 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 18:06:38,095 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 18:06:38,096 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 18:06:38,098 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 06:06:38" (1/1) ... [2022-03-17 18:06:38,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 06:06:38 BasicIcfg [2022-03-17 18:06:38,110 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 18:06:38,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 18:06:38,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 18:06:38,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 18:06:38,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:06:37" (1/4) ... [2022-03-17 18:06:38,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ac022a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:06:38, skipping insertion in model container [2022-03-17 18:06:38,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:37" (2/4) ... [2022-03-17 18:06:38,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ac022a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:06:38, skipping insertion in model container [2022-03-17 18:06:38,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 06:06:38" (3/4) ... [2022-03-17 18:06:38,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ac022a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 06:06:38, skipping insertion in model container [2022-03-17 18:06:38,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 06:06:38" (4/4) ... [2022-03-17 18:06:38,124 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound10.cJordan [2022-03-17 18:06:38,127 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-17 18:06:38,127 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 18:06:38,151 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 18:06:38,161 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 [2022-03-17 18:06:38,161 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 18:06:38,174 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 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) [2022-03-17 18:06:38,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-17 18:06:38,180 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:06:38,181 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:06:38,181 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:06:38,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:06:38,188 INFO L85 PathProgramCache]: Analyzing trace with hash 734203501, now seen corresponding path program 1 times [2022-03-17 18:06:38,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:06:38,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241376135] [2022-03-17 18:06:38,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:06:38,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:06:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:06:38,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:06:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:06:38,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:06:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:06:38,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-17 18:06:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:06:38,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-17 18:06:38,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:06:38,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241376135] [2022-03-17 18:06:38,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241376135] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:06:38,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:06:38,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-17 18:06:38,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867291179] [2022-03-17 18:06:38,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:06:38,384 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-17 18:06:38,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:06:38,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-17 18:06:38,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 18:06:38,408 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 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 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-03-17 18:06:38,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:06:38,460 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-03-17 18:06:38,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-17 18:06:38,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 22 [2022-03-17 18:06:38,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:06:38,469 INFO L225 Difference]: With dead ends: 31 [2022-03-17 18:06:38,470 INFO L226 Difference]: Without dead ends: 26 [2022-03-17 18:06:38,471 INFO L911 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 [2022-03-17 18:06:38,473 INFO L912 BasicCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 18:06:38,474 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 35 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 18:06:38,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-03-17 18:06:38,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-03-17 18:06:38,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 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) [2022-03-17 18:06:38,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-03-17 18:06:38,499 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 22 [2022-03-17 18:06:38,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:06:38,500 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-03-17 18:06:38,500 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-03-17 18:06:38,500 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-03-17 18:06:38,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-17 18:06:38,502 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:06:38,502 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:06:38,502 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 18:06:38,502 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:06:38,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:06:38,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1669026344, now seen corresponding path program 1 times [2022-03-17 18:06:38,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:06:38,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414965469] [2022-03-17 18:06:38,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:06:38,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:06:38,517 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 18:06:38,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2064727479] [2022-03-17 18:06:38,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:06:38,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 18:06:38,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 18:06:38,519 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) [2022-03-17 18:06:38,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-17 18:06:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:06:38,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-17 18:06:38,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 18:06:38,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-17 18:06:38,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-17 18:06:38,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:06:38,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414965469] [2022-03-17 18:06:38,684 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 18:06:38,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064727479] [2022-03-17 18:06:38,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064727479] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:06:38,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:06:38,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:06:38,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770208304] [2022-03-17 18:06:38,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:06:38,688 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:06:38,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:06:38,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:06:38,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:06:38,689 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-03-17 18:06:38,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:06:38,697 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-03-17 18:06:38,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:06:38,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 23 [2022-03-17 18:06:38,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:06:38,699 INFO L225 Difference]: With dead ends: 27 [2022-03-17 18:06:38,699 INFO L226 Difference]: Without dead ends: 27 [2022-03-17 18:06:38,699 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:06:38,700 INFO L912 BasicCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 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 [2022-03-17 18:06:38,700 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 18:06:38,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-03-17 18:06:38,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-03-17 18:06:38,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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) [2022-03-17 18:06:38,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-03-17 18:06:38,704 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 23 [2022-03-17 18:06:38,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:06:38,705 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-03-17 18:06:38,705 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-03-17 18:06:38,705 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-03-17 18:06:38,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-17 18:06:38,705 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:06:38,705 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:06:38,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-17 18:06:38,906 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 [2022-03-17 18:06:38,906 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:06:38,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:06:38,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1667953868, now seen corresponding path program 1 times [2022-03-17 18:06:38,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:06:38,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593659714] [2022-03-17 18:06:38,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:06:38,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:06:38,917 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 18:06:38,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [460320470] [2022-03-17 18:06:38,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:06:38,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 18:06:38,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 18:06:38,924 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) [2022-03-17 18:06:38,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-17 18:06:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:06:38,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-17 18:06:38,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 18:06:39,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-17 18:06:39,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-17 18:06:39,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:06:39,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593659714] [2022-03-17 18:06:39,078 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 18:06:39,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460320470] [2022-03-17 18:06:39,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460320470] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:06:39,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:06:39,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-17 18:06:39,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206450559] [2022-03-17 18:06:39,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:06:39,079 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 18:06:39,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:06:39,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 18:06:39,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-17 18:06:39,079 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 18:06:39,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:06:39,145 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2022-03-17 18:06:39,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 18:06:39,146 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-03-17 18:06:39,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:06:39,147 INFO L225 Difference]: With dead ends: 35 [2022-03-17 18:06:39,147 INFO L226 Difference]: Without dead ends: 35 [2022-03-17 18:06:39,147 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-17 18:06:39,148 INFO L912 BasicCegarLoop]: 20 mSDtfsCounter, 19 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 18:06:39,148 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 121 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 18:06:39,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-03-17 18:06:39,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2022-03-17 18:06:39,151 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) [2022-03-17 18:06:39,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-03-17 18:06:39,152 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2022-03-17 18:06:39,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:06:39,152 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-03-17 18:06:39,152 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 18:06:39,152 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-03-17 18:06:39,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-17 18:06:39,153 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:06:39,153 INFO L500 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] [2022-03-17 18:06:39,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-17 18:06:39,359 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 [2022-03-17 18:06:39,359 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:06:39,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:06:39,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1179905874, now seen corresponding path program 1 times [2022-03-17 18:06:39,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:06:39,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504992370] [2022-03-17 18:06:39,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:06:39,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:06:39,374 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 18:06:39,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [142746864] [2022-03-17 18:06:39,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:06:39,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 18:06:39,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 18:06:39,377 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) [2022-03-17 18:06:39,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-17 18:06:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:06:39,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-17 18:06:39,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 18:06:39,572 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-17 18:06:39,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 18:06:39,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-17 18:06:39,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:06:39,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504992370] [2022-03-17 18:06:39,694 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 18:06:39,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142746864] [2022-03-17 18:06:39,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142746864] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 18:06:39,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 18:06:39,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-03-17 18:06:39,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963796689] [2022-03-17 18:06:39,695 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 18:06:39,695 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 18:06:39,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:06:39,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 18:06:39,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-17 18:06:39,696 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 18:06:39,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:06:39,758 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2022-03-17 18:06:39,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 18:06:39,758 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 29 [2022-03-17 18:06:39,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:06:39,759 INFO L225 Difference]: With dead ends: 37 [2022-03-17 18:06:39,759 INFO L226 Difference]: Without dead ends: 34 [2022-03-17 18:06:39,760 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-03-17 18:06:39,760 INFO L912 BasicCegarLoop]: 21 mSDtfsCounter, 21 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 18:06:39,761 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 131 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 18:06:39,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-03-17 18:06:39,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2022-03-17 18:06:39,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-17 18:06:39,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2022-03-17 18:06:39,764 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 29 [2022-03-17 18:06:39,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:06:39,764 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2022-03-17 18:06:39,764 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 18:06:39,764 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2022-03-17 18:06:39,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-17 18:06:39,765 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:06:39,765 INFO L500 BasicCegarLoop]: trace histogram [2, 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] [2022-03-17 18:06:39,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-17 18:06:39,979 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 18:06:39,980 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:06:39,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:06:39,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1668946595, now seen corresponding path program 1 times [2022-03-17 18:06:39,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:06:39,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070977386] [2022-03-17 18:06:39,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:06:39,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:06:39,989 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 18:06:39,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1409918266] [2022-03-17 18:06:39,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:06:39,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 18:06:39,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 18:06:39,990 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 18:06:39,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-17 18:06:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:06:40,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-17 18:06:40,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 18:06:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-17 18:06:40,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 18:06:40,175 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-17 18:06:40,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:06:40,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070977386] [2022-03-17 18:06:40,175 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 18:06:40,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409918266] [2022-03-17 18:06:40,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409918266] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 18:06:40,176 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 18:06:40,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-03-17 18:06:40,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875173767] [2022-03-17 18:06:40,176 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 18:06:40,176 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 18:06:40,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:06:40,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 18:06:40,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-03-17 18:06:40,177 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-03-17 18:06:40,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:06:40,218 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2022-03-17 18:06:40,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 18:06:40,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 32 [2022-03-17 18:06:40,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:06:40,219 INFO L225 Difference]: With dead ends: 56 [2022-03-17 18:06:40,219 INFO L226 Difference]: Without dead ends: 56 [2022-03-17 18:06:40,220 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-17 18:06:40,220 INFO L912 BasicCegarLoop]: 29 mSDtfsCounter, 25 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 18:06:40,221 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 106 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 18:06:40,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-03-17 18:06:40,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-03-17 18:06:40,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-17 18:06:40,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2022-03-17 18:06:40,225 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 32 [2022-03-17 18:06:40,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:06:40,225 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2022-03-17 18:06:40,225 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-03-17 18:06:40,225 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2022-03-17 18:06:40,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-17 18:06:40,226 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:06:40,226 INFO L500 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:06:40,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-17 18:06:40,443 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 18:06:40,443 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:06:40,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:06:40,444 INFO L85 PathProgramCache]: Analyzing trace with hash -906969448, now seen corresponding path program 2 times [2022-03-17 18:06:40,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:06:40,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849884086] [2022-03-17 18:06:40,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:06:40,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:06:40,452 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 18:06:40,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1891367024] [2022-03-17 18:06:40,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-17 18:06:40,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 18:06:40,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 18:06:40,457 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 18:06:40,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-17 18:06:40,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-17 18:06:40,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-17 18:06:40,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-17 18:06:40,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 18:06:40,609 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-17 18:06:40,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 18:06:40,741 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-17 18:06:40,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:06:40,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849884086] [2022-03-17 18:06:40,742 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 18:06:40,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891367024] [2022-03-17 18:06:40,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891367024] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 18:06:40,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 18:06:40,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-03-17 18:06:40,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272241631] [2022-03-17 18:06:40,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 18:06:40,743 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-17 18:06:40,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:06:40,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-17 18:06:40,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-03-17 18:06:40,743 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 12 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) [2022-03-17 18:06:40,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:06:40,870 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2022-03-17 18:06:40,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-17 18:06:40,871 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 12 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) Word has length 59 [2022-03-17 18:06:40,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:06:40,872 INFO L225 Difference]: With dead ends: 110 [2022-03-17 18:06:40,872 INFO L226 Difference]: Without dead ends: 110 [2022-03-17 18:06:40,872 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2022-03-17 18:06:40,872 INFO L912 BasicCegarLoop]: 35 mSDtfsCounter, 107 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:06:40,873 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 176 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:06:40,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-03-17 18:06:40,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-03-17 18:06:40,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 82 states have (on average 1.1341463414634145) internal successors, (93), 82 states have internal predecessors, (93), 15 states have call successors, (15), 14 states have call predecessors, (15), 12 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-17 18:06:40,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2022-03-17 18:06:40,893 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 59 [2022-03-17 18:06:40,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:06:40,894 INFO L478 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2022-03-17 18:06:40,894 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 12 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) [2022-03-17 18:06:40,894 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2022-03-17 18:06:40,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-03-17 18:06:40,895 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:06:40,895 INFO L500 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:06:40,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-17 18:06:41,111 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 18:06:41,111 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:06:41,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:06:41,112 INFO L85 PathProgramCache]: Analyzing trace with hash 191644600, now seen corresponding path program 3 times [2022-03-17 18:06:41,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:06:41,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156031301] [2022-03-17 18:06:41,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:06:41,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:06:41,122 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 18:06:41,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1730222912] [2022-03-17 18:06:41,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-17 18:06:41,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 18:06:41,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 18:06:41,124 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 18:06:41,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-17 18:06:41,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-03-17 18:06:41,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-03-17 18:06:41,186 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-17 18:06:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-17 18:06:41,272 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-17 18:06:41,273 INFO L614 BasicCegarLoop]: Counterexample is feasible [2022-03-17 18:06:41,273 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-17 18:06:41,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-17 18:06:41,491 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 18:06:41,494 INFO L718 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2022-03-17 18:06:41,495 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-17 18:06:41,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 06:06:41 BasicIcfg [2022-03-17 18:06:41,526 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-17 18:06:41,527 INFO L158 Benchmark]: Toolchain (without parser) took 3891.14ms. Allocated memory was 195.0MB in the beginning and 290.5MB in the end (delta: 95.4MB). Free memory was 142.0MB in the beginning and 159.9MB in the end (delta: -17.9MB). Peak memory consumption was 79.0MB. Max. memory is 8.0GB. [2022-03-17 18:06:41,527 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 195.0MB. Free memory is still 158.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 18:06:41,527 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.98ms. Allocated memory is still 195.0MB. Free memory was 141.9MB in the beginning and 171.9MB in the end (delta: -30.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-17 18:06:41,527 INFO L158 Benchmark]: Boogie Preprocessor took 29.36ms. Allocated memory is still 195.0MB. Free memory was 171.9MB in the beginning and 170.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-17 18:06:41,527 INFO L158 Benchmark]: RCFGBuilder took 221.16ms. Allocated memory is still 195.0MB. Free memory was 170.8MB in the beginning and 160.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-17 18:06:41,527 INFO L158 Benchmark]: IcfgTransformer took 15.23ms. Allocated memory is still 195.0MB. Free memory was 160.4MB in the beginning and 159.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-17 18:06:41,528 INFO L158 Benchmark]: TraceAbstraction took 3415.03ms. Allocated memory was 195.0MB in the beginning and 290.5MB in the end (delta: 95.4MB). Free memory was 158.8MB in the beginning and 159.9MB in the end (delta: -1.1MB). Peak memory consumption was 95.4MB. Max. memory is 8.0GB. [2022-03-17 18:06:41,529 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 195.0MB. Free memory is still 158.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 201.98ms. Allocated memory is still 195.0MB. Free memory was 141.9MB in the beginning and 171.9MB in the end (delta: -30.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.36ms. Allocated memory is still 195.0MB. Free memory was 171.9MB in the beginning and 170.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 221.16ms. Allocated memory is still 195.0MB. Free memory was 170.8MB in the beginning and 160.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 15.23ms. Allocated memory is still 195.0MB. Free memory was 160.4MB in the beginning and 159.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 3415.03ms. Allocated memory was 195.0MB in the beginning and 290.5MB in the end (delta: 95.4MB). Free memory was 158.8MB in the beginning and 159.9MB in the end (delta: -1.1MB). Peak memory consumption was 95.4MB. 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 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [\old(counter)=13, counter=0] [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L29] CALL assume_abort_if_not(x1 >= 0) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L29] RET assume_abort_if_not(x1 >= 0) VAL [\old(counter)=0, counter=0, x1=11, x2=1] [L30] CALL assume_abort_if_not(x2 != 0) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L30] RET assume_abort_if_not(x2 != 0) VAL [\old(counter)=0, counter=0, x1=11, x2=1] [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [\old(counter)=0, counter=0, x1=11, x2=1, y1=0, y2=0, y3=11] [L36] EXPR counter++ VAL [\old(counter)=0, counter=1, counter++=0, x1=11, x2=1, y1=0, y2=0, y3=11] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=1, x1=11, x2=1, y1=0, y2=0, y3=11] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=1, x1=11, x2=1, y1=0, y2=0, y3=11] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=1, x1=11, x2=1, y1=1, y2=0, y3=10] [L36] EXPR counter++ VAL [\old(counter)=0, counter=2, counter++=1, x1=11, x2=1, y1=1, y2=0, y3=10] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=2, x1=11, x2=1, y1=1, y2=0, y3=10] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=2, x1=11, x2=1, y1=1, y2=0, y3=10] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=2, x1=11, x2=1, y1=2, y2=0, y3=9] [L36] EXPR counter++ VAL [\old(counter)=0, counter=3, counter++=2, x1=11, x2=1, y1=2, y2=0, y3=9] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=3, x1=11, x2=1, y1=2, y2=0, y3=9] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=3, x1=11, x2=1, y1=2, y2=0, y3=9] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=3, x1=11, x2=1, y1=3, y2=0, y3=8] [L36] EXPR counter++ VAL [\old(counter)=0, counter=4, counter++=3, x1=11, x2=1, y1=3, y2=0, y3=8] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=4, x1=11, x2=1, y1=3, y2=0, y3=8] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=4, x1=11, x2=1, y1=3, y2=0, y3=8] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=4, x1=11, x2=1, y1=4, y2=0, y3=7] [L36] EXPR counter++ VAL [\old(counter)=0, counter=5, counter++=4, x1=11, x2=1, y1=4, y2=0, y3=7] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=5, x1=11, x2=1, y1=4, y2=0, y3=7] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=5, x1=11, x2=1, y1=4, y2=0, y3=7] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=5, x1=11, x2=1, y1=5, y2=0, y3=6] [L36] EXPR counter++ VAL [\old(counter)=0, counter=6, counter++=5, x1=11, x2=1, y1=5, y2=0, y3=6] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=6] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=6] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=6, x1=11, x2=1, y1=5, y2=0, y3=6] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=6, x1=11, x2=1, y1=5, y2=0, y3=6] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=6, x1=11, x2=1, y1=6, y2=0, y3=5] [L36] EXPR counter++ VAL [\old(counter)=0, counter=7, counter++=6, x1=11, x2=1, y1=6, y2=0, y3=5] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=7, x1=11, x2=1, y1=6, y2=0, y3=5] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=7, x1=11, x2=1, y1=6, y2=0, y3=5] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=7, x1=11, x2=1, y1=7, y2=0, y3=4] [L36] EXPR counter++ VAL [\old(counter)=0, counter=8, counter++=7, x1=11, x2=1, y1=7, y2=0, y3=4] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=8, x1=11, x2=1, y1=7, y2=0, y3=4] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=8, x1=11, x2=1, y1=7, y2=0, y3=4] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=8, x1=11, x2=1, y1=8, y2=0, y3=3] [L36] EXPR counter++ VAL [\old(counter)=0, counter=9, counter++=8, x1=11, x2=1, y1=8, y2=0, y3=3] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=9] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=9] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=9, x1=11, x2=1, y1=8, y2=0, y3=3] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=9, x1=11, x2=1, y1=8, y2=0, y3=3] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=9, x1=11, x2=1, y1=9, y2=0, y3=2] [L36] EXPR counter++ VAL [\old(counter)=0, counter=10, counter++=9, x1=11, x2=1, y1=9, y2=0, y3=2] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=10, x1=11, x2=1, y1=9, y2=0, y3=2] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=10, x1=11, x2=1, y1=9, y2=0, y3=2] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=10, x1=11, x2=1, y1=10, y2=0, y3=1] [L36] EXPR counter++ VAL [\old(counter)=0, counter=11, counter++=10, x1=11, x2=1, y1=10, y2=0, y3=1] [L36] COND FALSE !(counter++<10) [L50] CALL __VERIFIER_assert(y1*x2 + y2 == x1) VAL [\old(cond)=0, \old(counter)=0, counter=11] [L16] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=11] [L18] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.3s, OverallIterations: 7, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 186 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 182 mSDsluCounter, 636 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 473 mSDsCounter, 77 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 221 IncrementalHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 77 mSolverCounterUnsat, 163 mSDtfsCounter, 221 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 308 GetRequests, 255 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=6, InterpolantAutomatonStates: 55, 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, 6 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 301 NumberOfCodeBlocks, 301 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 299 ConstructedInterpolants, 0 QuantifiedInterpolants, 699 SizeOfPredicates, 18 NumberOfNonLiveVariables, 591 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 82/188 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 RESULT: Ultimate proved your program to be incorrect! [2022-03-17 18:06:41,571 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...