/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/fermat2-ll_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 05:50:08,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 05:50:08,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 05:50:08,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 05:50:08,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 05:50:08,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 05:50:08,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 05:50:08,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 05:50:08,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 05:50:08,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 05:50:08,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 05:50:08,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 05:50:08,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 05:50:08,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 05:50:08,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 05:50:08,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 05:50:08,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 05:50:08,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 05:50:08,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 05:50:08,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 05:50:08,438 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 05:50:08,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 05:50:08,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 05:50:08,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 05:50:08,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 05:50:08,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 05:50:08,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-20 05:50:08,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-20 05:50:08,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-20 05:50:08,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-20 05:50:08,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-20 05:50:08,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-20 05:50:08,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-20 05:50:08,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-20 05:50:08,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 05:50:08,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 05:50:08,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 05:50:08,465 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-20 05:50:08,473 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 05:50:08,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 05:50:08,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 05:50:08,474 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 05:50:08,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 05:50:08,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 05:50:08,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 05:50:08,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 05:50:08,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 05:50:08,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 05:50:08,475 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 05:50:08,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 05:50:08,476 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 05:50:08,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 05:50:08,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 05:50:08,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 05:50:08,476 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 05:50:08,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 05:50:08,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 05:50:08,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 05:50:08,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 05:50:08,478 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 05:50:08,478 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 05:50:08,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 05:50:08,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 05:50:08,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 05:50:08,708 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 05:50:08,710 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 05:50:08,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_unwindbound10.c [2022-03-20 05:50:08,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e877d835/116e61d0789f48fbb71177a2db408be5/FLAGbe1fe2f3f [2022-03-20 05:50:09,125 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 05:50:09,125 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_unwindbound10.c [2022-03-20 05:50:09,130 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e877d835/116e61d0789f48fbb71177a2db408be5/FLAGbe1fe2f3f [2022-03-20 05:50:09,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e877d835/116e61d0789f48fbb71177a2db408be5 [2022-03-20 05:50:09,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 05:50:09,542 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 05:50:09,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 05:50:09,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 05:50:09,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 05:50:09,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:50:09" (1/1) ... [2022-03-20 05:50:09,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16f6d986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:50:09, skipping insertion in model container [2022-03-20 05:50:09,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:50:09" (1/1) ... [2022-03-20 05:50:09,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 05:50:09,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 05:50:09,697 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/fermat2-ll_unwindbound10.c[524,537] [2022-03-20 05:50:09,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 05:50:09,715 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 05:50:09,725 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/fermat2-ll_unwindbound10.c[524,537] [2022-03-20 05:50:09,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 05:50:09,740 INFO L208 MainTranslator]: Completed translation [2022-03-20 05:50:09,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:50:09 WrapperNode [2022-03-20 05:50:09,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 05:50:09,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 05:50:09,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 05:50:09,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 05:50:09,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:50:09" (1/1) ... [2022-03-20 05:50:09,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:50:09" (1/1) ... [2022-03-20 05:50:09,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:50:09" (1/1) ... [2022-03-20 05:50:09,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:50:09" (1/1) ... [2022-03-20 05:50:09,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:50:09" (1/1) ... [2022-03-20 05:50:09,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:50:09" (1/1) ... [2022-03-20 05:50:09,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:50:09" (1/1) ... [2022-03-20 05:50:09,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 05:50:09,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 05:50:09,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 05:50:09,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 05:50:09,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:50:09" (1/1) ... [2022-03-20 05:50:09,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 05:50:09,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:50:09,816 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 05:50:09,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 05:50:09,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 05:50:09,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 05:50:09,847 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 05:50:09,847 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 05:50:09,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 05:50:09,848 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 05:50:09,848 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 05:50:09,848 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 05:50:09,848 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 05:50:09,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 05:50:09,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 05:50:09,849 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 05:50:09,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 05:50:09,849 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 05:50:09,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 05:50:09,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 05:50:09,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 05:50:09,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 05:50:09,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 05:50:09,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 05:50:09,892 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 05:50:09,893 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 05:50:10,030 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 05:50:10,041 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 05:50:10,041 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 05:50:10,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:50:10 BoogieIcfgContainer [2022-03-20 05:50:10,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 05:50:10,043 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 05:50:10,043 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 05:50:10,044 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 05:50:10,046 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:50:10" (1/1) ... [2022-03-20 05:50:10,047 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-03-20 05:50:10,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 05:50:10 BasicIcfg [2022-03-20 05:50:10,066 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 05:50:10,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 05:50:10,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 05:50:10,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 05:50:10,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 05:50:09" (1/4) ... [2022-03-20 05:50:10,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed29a9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:50:10, skipping insertion in model container [2022-03-20 05:50:10,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:50:09" (2/4) ... [2022-03-20 05:50:10,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed29a9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:50:10, skipping insertion in model container [2022-03-20 05:50:10,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:50:10" (3/4) ... [2022-03-20 05:50:10,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed29a9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 05:50:10, skipping insertion in model container [2022-03-20 05:50:10,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 05:50:10" (4/4) ... [2022-03-20 05:50:10,074 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_unwindbound10.cJordan [2022-03-20 05:50:10,077 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-20 05:50:10,077 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 05:50:10,115 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 05:50:10,120 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-20 05:50:10,121 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 05:50:10,135 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) [2022-03-20 05:50:10,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-20 05:50:10,144 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:50:10,145 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:50:10,145 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:50:10,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:50:10,149 INFO L85 PathProgramCache]: Analyzing trace with hash 734203501, now seen corresponding path program 1 times [2022-03-20 05:50:10,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:50:10,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485155988] [2022-03-20 05:50:10,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:50:10,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:50:10,238 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:50:10,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [473140056] [2022-03-20 05:50:10,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:50:10,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:50:10,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:50:10,241 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:50:10,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 05:50:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:50:10,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjunts are in the unsatisfiable core [2022-03-20 05:50:10,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:50:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-20 05:50:10,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 05:50:10,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:50:10,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485155988] [2022-03-20 05:50:10,397 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:50:10,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473140056] [2022-03-20 05:50:10,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473140056] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 05:50:10,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 05:50:10,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-20 05:50:10,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141322741] [2022-03-20 05:50:10,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 05:50:10,401 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-20 05:50:10,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:50:10,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-20 05:50:10,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-20 05:50:10,420 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 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-20 05:50:10,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:50:10,432 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-03-20 05:50:10,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-20 05:50:10,434 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 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 [2022-03-20 05:50:10,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:50:10,438 INFO L225 Difference]: With dead ends: 30 [2022-03-20 05:50:10,438 INFO L226 Difference]: Without dead ends: 25 [2022-03-20 05:50:10,439 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-20 05:50:10,442 INFO L913 BasicCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 05:50:10,443 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 05:50:10,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-03-20 05:50:10,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-03-20 05:50:10,465 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) [2022-03-20 05:50:10,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-03-20 05:50:10,467 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 22 [2022-03-20 05:50:10,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:50:10,467 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-03-20 05:50:10,468 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-20 05:50:10,468 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-03-20 05:50:10,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-20 05:50:10,469 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:50:10,469 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:50:10,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 05:50:10,683 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-03-20 05:50:10,684 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:50:10,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:50:10,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1669026344, now seen corresponding path program 1 times [2022-03-20 05:50:10,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:50:10,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874831888] [2022-03-20 05:50:10,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:50:10,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:50:10,696 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:50:10,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [314995534] [2022-03-20 05:50:10,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:50:10,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:50:10,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:50:10,699 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:50:10,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 05:50:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:50:10,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 05:50:10,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:50:10,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 05:50:10,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 05:50:10,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:50:10,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874831888] [2022-03-20 05:50:10,874 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:50:10,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314995534] [2022-03-20 05:50:10,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314995534] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 05:50:10,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 05:50:10,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 05:50:10,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132760937] [2022-03-20 05:50:10,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 05:50:10,876 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 05:50:10,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:50:10,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 05:50:10,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 05:50:10,885 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) [2022-03-20 05:50:10,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:50:10,897 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-03-20 05:50:10,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 05:50:10,898 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 [2022-03-20 05:50:10,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:50:10,899 INFO L225 Difference]: With dead ends: 27 [2022-03-20 05:50:10,899 INFO L226 Difference]: Without dead ends: 27 [2022-03-20 05:50:10,899 INFO L912 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 [2022-03-20 05:50:10,900 INFO L913 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 [2022-03-20 05:50:10,901 INFO L914 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] [2022-03-20 05:50:10,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-03-20 05:50:10,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-03-20 05:50:10,907 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) [2022-03-20 05:50:10,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-03-20 05:50:10,908 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 23 [2022-03-20 05:50:10,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:50:10,909 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-03-20 05:50:10,909 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) [2022-03-20 05:50:10,909 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-03-20 05:50:10,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-20 05:50:10,910 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:50:10,910 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:50:10,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 05:50:11,121 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,SelfDestructingSolverStorable1 [2022-03-20 05:50:11,123 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:50:11,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:50:11,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1667953868, now seen corresponding path program 1 times [2022-03-20 05:50:11,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:50:11,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961589871] [2022-03-20 05:50:11,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:50:11,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:50:11,144 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:50:11,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1913854541] [2022-03-20 05:50:11,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:50:11,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:50:11,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:50:11,151 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) [2022-03-20 05:50:11,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-20 05:50:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:50:11,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-20 05:50:11,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:50:11,521 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 05:50:11,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 05:50:11,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:50:11,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961589871] [2022-03-20 05:50:11,521 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:50:11,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913854541] [2022-03-20 05:50:11,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913854541] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 05:50:11,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 05:50:11,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 05:50:11,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886288284] [2022-03-20 05:50:11,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 05:50:11,522 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 05:50:11,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:50:11,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 05:50:11,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 05:50:11,523 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 05:50:13,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:50:13,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:50:13,593 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2022-03-20 05:50:13,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 05:50:13,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-03-20 05:50:13,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:50:13,594 INFO L225 Difference]: With dead ends: 35 [2022-03-20 05:50:13,595 INFO L226 Difference]: Without dead ends: 35 [2022-03-20 05:50:13,595 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 05:50:13,596 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 7 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-20 05:50:13,596 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 88 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-03-20 05:50:13,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-03-20 05:50:13,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2022-03-20 05:50:13,601 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) [2022-03-20 05:50:13,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-03-20 05:50:13,602 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2022-03-20 05:50:13,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:50:13,602 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-03-20 05:50:13,602 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 05:50:13,602 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-03-20 05:50:13,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-20 05:50:13,603 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:50:13,603 INFO L499 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] [2022-03-20 05:50:13,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-20 05:50:13,811 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:50:13,811 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:50:13,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:50:13,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1179905874, now seen corresponding path program 1 times [2022-03-20 05:50:13,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:50:13,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935188400] [2022-03-20 05:50:13,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:50:13,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:50:13,820 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:50:13,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051689449] [2022-03-20 05:50:13,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:50:13,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:50:13,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:50:13,828 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) [2022-03-20 05:50:13,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-20 05:50:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:50:13,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-20 05:50:13,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:50:14,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 05:50:14,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:50:14,222 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 05:50:14,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:50:14,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935188400] [2022-03-20 05:50:14,223 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:50:14,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051689449] [2022-03-20 05:50:14,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051689449] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 05:50:14,223 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 05:50:14,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-03-20 05:50:14,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016044633] [2022-03-20 05:50:14,223 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 05:50:14,226 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 05:50:14,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:50:14,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 05:50:14,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-20 05:50:14,227 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) [2022-03-20 05:50:14,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:50:14,311 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2022-03-20 05:50:14,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 05:50:14,311 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 [2022-03-20 05:50:14,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:50:14,313 INFO L225 Difference]: With dead ends: 37 [2022-03-20 05:50:14,313 INFO L226 Difference]: Without dead ends: 34 [2022-03-20 05:50:14,313 INFO L912 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 [2022-03-20 05:50:14,314 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 05:50:14,314 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 112 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 05:50:14,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-03-20 05:50:14,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2022-03-20 05:50:14,317 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) [2022-03-20 05:50:14,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2022-03-20 05:50:14,318 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 29 [2022-03-20 05:50:14,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:50:14,318 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2022-03-20 05:50:14,319 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) [2022-03-20 05:50:14,319 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2022-03-20 05:50:14,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-20 05:50:14,319 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:50:14,319 INFO L499 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] [2022-03-20 05:50:14,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-20 05:50:14,535 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:50:14,535 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:50:14,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:50:14,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1668946595, now seen corresponding path program 1 times [2022-03-20 05:50:14,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:50:14,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343123313] [2022-03-20 05:50:14,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:50:14,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:50:14,543 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:50:14,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1593171682] [2022-03-20 05:50:14,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:50:14,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:50:14,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:50:14,545 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) [2022-03-20 05:50:14,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-20 05:50:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:50:14,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 05:50:14,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:50:14,673 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 05:50:14,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:50:14,750 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 05:50:14,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:50:14,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343123313] [2022-03-20 05:50:14,751 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:50:14,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593171682] [2022-03-20 05:50:14,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593171682] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 05:50:14,751 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 05:50:14,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-03-20 05:50:14,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065302964] [2022-03-20 05:50:14,751 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 05:50:14,752 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 05:50:14,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:50:14,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 05:50:14,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-03-20 05:50:14,752 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) [2022-03-20 05:50:14,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:50:14,801 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2022-03-20 05:50:14,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 05:50:14,801 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 [2022-03-20 05:50:14,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:50:14,802 INFO L225 Difference]: With dead ends: 56 [2022-03-20 05:50:14,802 INFO L226 Difference]: Without dead ends: 56 [2022-03-20 05:50:14,802 INFO L912 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 [2022-03-20 05:50:14,803 INFO L913 BasicCegarLoop]: 29 mSDtfsCounter, 39 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 05:50:14,803 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 94 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 05:50:14,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-03-20 05:50:14,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-03-20 05:50:14,806 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) [2022-03-20 05:50:14,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2022-03-20 05:50:14,807 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 32 [2022-03-20 05:50:14,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:50:14,807 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2022-03-20 05:50:14,807 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) [2022-03-20 05:50:14,807 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2022-03-20 05:50:14,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-20 05:50:14,808 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:50:14,808 INFO L499 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] [2022-03-20 05:50:14,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-20 05:50:15,024 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:50:15,025 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:50:15,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:50:15,025 INFO L85 PathProgramCache]: Analyzing trace with hash -906969448, now seen corresponding path program 2 times [2022-03-20 05:50:15,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:50:15,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803921924] [2022-03-20 05:50:15,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:50:15,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:50:15,037 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:50:15,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1239204641] [2022-03-20 05:50:15,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 05:50:15,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:50:15,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:50:15,045 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) [2022-03-20 05:50:15,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-20 05:50:15,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 05:50:15,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 05:50:15,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-20 05:50:15,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:50:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 05:50:15,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:50:15,417 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-20 05:50:15,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:50:15,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803921924] [2022-03-20 05:50:15,418 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:50:15,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239204641] [2022-03-20 05:50:15,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239204641] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 05:50:15,418 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 05:50:15,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-03-20 05:50:15,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396329929] [2022-03-20 05:50:15,418 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 05:50:15,418 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 05:50:15,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:50:15,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 05:50:15,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-03-20 05:50:15,419 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) [2022-03-20 05:50:15,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:50:15,579 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2022-03-20 05:50:15,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-20 05:50:15,579 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 [2022-03-20 05:50:15,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:50:15,581 INFO L225 Difference]: With dead ends: 110 [2022-03-20 05:50:15,581 INFO L226 Difference]: Without dead ends: 110 [2022-03-20 05:50:15,581 INFO L912 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 [2022-03-20 05:50:15,582 INFO L913 BasicCegarLoop]: 35 mSDtfsCounter, 102 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 05:50:15,582 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 142 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 05:50:15,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-03-20 05:50:15,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-03-20 05:50:15,589 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) [2022-03-20 05:50:15,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2022-03-20 05:50:15,591 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 59 [2022-03-20 05:50:15,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:50:15,591 INFO L478 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2022-03-20 05:50:15,591 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) [2022-03-20 05:50:15,591 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2022-03-20 05:50:15,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-03-20 05:50:15,593 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:50:15,593 INFO L499 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] [2022-03-20 05:50:15,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-20 05:50:15,821 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:50:15,823 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:50:15,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:50:15,824 INFO L85 PathProgramCache]: Analyzing trace with hash 191644600, now seen corresponding path program 3 times [2022-03-20 05:50:15,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:50:15,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900234931] [2022-03-20 05:50:15,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:50:15,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:50:15,833 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:50:15,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1891135977] [2022-03-20 05:50:15,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 05:50:15,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:50:15,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:50:15,834 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:50:15,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-20 05:50:18,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-03-20 05:50:18,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-03-20 05:50:18,073 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 05:50:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 05:50:18,160 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 05:50:18,160 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-03-20 05:50:18,161 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 05:50:18,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-20 05:50:18,369 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:50:18,371 INFO L719 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2022-03-20 05:50:18,374 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 05:50:18,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 05:50:18 BasicIcfg [2022-03-20 05:50:18,428 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 05:50:18,429 INFO L158 Benchmark]: Toolchain (without parser) took 8887.04ms. Allocated memory was 165.7MB in the beginning and 208.7MB in the end (delta: 43.0MB). Free memory was 116.1MB in the beginning and 72.8MB in the end (delta: 43.3MB). Peak memory consumption was 86.2MB. Max. memory is 8.0GB. [2022-03-20 05:50:18,429 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 165.7MB. Free memory was 132.5MB in the beginning and 132.3MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 05:50:18,429 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.42ms. Allocated memory is still 165.7MB. Free memory was 115.8MB in the beginning and 141.1MB in the end (delta: -25.3MB). Peak memory consumption was 11.1MB. Max. memory is 8.0GB. [2022-03-20 05:50:18,429 INFO L158 Benchmark]: Boogie Preprocessor took 48.18ms. Allocated memory is still 165.7MB. Free memory was 141.1MB in the beginning and 139.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 05:50:18,430 INFO L158 Benchmark]: RCFGBuilder took 252.54ms. Allocated memory is still 165.7MB. Free memory was 139.4MB in the beginning and 129.0MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-20 05:50:18,430 INFO L158 Benchmark]: IcfgTransformer took 22.78ms. Allocated memory is still 165.7MB. Free memory was 128.5MB in the beginning and 127.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 05:50:18,430 INFO L158 Benchmark]: TraceAbstraction took 8361.26ms. Allocated memory was 165.7MB in the beginning and 208.7MB in the end (delta: 43.0MB). Free memory was 126.9MB in the beginning and 72.8MB in the end (delta: 54.1MB). Peak memory consumption was 97.1MB. Max. memory is 8.0GB. [2022-03-20 05:50:18,431 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 165.7MB. Free memory was 132.5MB in the beginning and 132.3MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 197.42ms. Allocated memory is still 165.7MB. Free memory was 115.8MB in the beginning and 141.1MB in the end (delta: -25.3MB). Peak memory consumption was 11.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 48.18ms. Allocated memory is still 165.7MB. Free memory was 141.1MB in the beginning and 139.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 252.54ms. Allocated memory is still 165.7MB. Free memory was 139.4MB in the beginning and 129.0MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 22.78ms. Allocated memory is still 165.7MB. Free memory was 128.5MB in the beginning and 127.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 8361.26ms. Allocated memory was 165.7MB in the beginning and 208.7MB in the end (delta: 43.0MB). Free memory was 126.9MB in the beginning and 72.8MB in the end (delta: 54.1MB). Peak memory consumption was 97.1MB. 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: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int counter = 0; VAL [\old(counter)=14, counter=0] [L21] int A, R; [L22] long long u, v, r; [L23] A = __VERIFIER_nondet_int() [L24] R = __VERIFIER_nondet_int() [L26] CALL assume_abort_if_not(((long long) R - 1) * ((long long) R - 1) < A) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L26] RET assume_abort_if_not(((long long) R - 1) * ((long long) R - 1) < A) VAL [\old(counter)=0, A=2603, counter=0, R=52] [L28] CALL assume_abort_if_not(A % 2 == 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L28] RET assume_abort_if_not(A % 2 == 1) VAL [\old(counter)=0, A=2603, counter=0, R=52] [L30] u = ((long long) 2 * R) + 1 [L31] v = 1 [L32] r = ((long long) R * R) - A VAL [\old(counter)=0, A=2603, counter=0, R=52, r=101, u=105, v=1] [L34] EXPR counter++ VAL [\old(counter)=0, A=2603, counter=1, counter++=0, R=52, r=101, u=105, v=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=2603, counter=1, R=52, r=101, u=105, v=1] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=2603, counter=1, r=101, R=52, u=105, v=1] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=2603, counter=1, r=100, R=52, u=105, v=3] [L34] EXPR counter++ VAL [\old(counter)=0, A=2603, counter=2, counter++=1, R=52, r=100, u=105, v=3] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=2603, counter=2, r=100, R=52, u=105, v=3] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=2603, counter=2, r=100, R=52, u=105, v=3] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=2603, counter=2, R=52, r=97, u=105, v=5] [L34] EXPR counter++ VAL [\old(counter)=0, A=2603, counter=3, counter++=2, r=97, R=52, u=105, v=5] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=2603, counter=3, r=97, R=52, u=105, v=5] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=2603, counter=3, R=52, r=97, u=105, v=5] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=2603, counter=3, R=52, r=92, u=105, v=7] [L34] EXPR counter++ VAL [\old(counter)=0, A=2603, counter=4, counter++=3, R=52, r=92, u=105, v=7] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=2603, counter=4, R=52, r=92, u=105, v=7] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=2603, counter=4, r=92, R=52, u=105, v=7] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=2603, counter=4, R=52, r=85, u=105, v=9] [L34] EXPR counter++ VAL [\old(counter)=0, A=2603, counter=5, counter++=4, R=52, r=85, u=105, v=9] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=2603, counter=5, R=52, r=85, u=105, v=9] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=2603, counter=5, R=52, r=85, u=105, v=9] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=2603, counter=5, R=52, r=76, u=105, v=11] [L34] EXPR counter++ VAL [\old(counter)=0, A=2603, counter=6, counter++=5, R=52, r=76, u=105, v=11] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=6] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=6] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=2603, counter=6, R=52, r=76, u=105, v=11] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=2603, counter=6, R=52, r=76, u=105, v=11] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=2603, counter=6, R=52, r=65, u=105, v=13] [L34] EXPR counter++ VAL [\old(counter)=0, A=2603, counter=7, counter++=6, r=65, R=52, u=105, v=13] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=2603, counter=7, R=52, r=65, u=105, v=13] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=2603, counter=7, R=52, r=65, u=105, v=13] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=2603, counter=7, R=52, r=52, u=105, v=15] [L34] EXPR counter++ VAL [\old(counter)=0, A=2603, counter=8, counter++=7, r=52, R=52, u=105, v=15] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=2603, counter=8, r=52, R=52, u=105, v=15] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=2603, counter=8, r=52, R=52, u=105, v=15] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=2603, counter=8, r=37, R=52, u=105, v=17] [L34] EXPR counter++ VAL [\old(counter)=0, A=2603, counter=9, counter++=8, r=37, R=52, u=105, v=17] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=9] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=9] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=2603, counter=9, R=52, r=37, u=105, v=17] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=2603, counter=9, R=52, r=37, u=105, v=17] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=2603, counter=9, r=20, R=52, u=105, v=19] [L34] EXPR counter++ VAL [\old(counter)=0, A=2603, counter=10, counter++=9, R=52, r=20, u=105, v=19] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=2603, counter=10, r=20, R=52, u=105, v=19] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=2603, counter=10, r=20, R=52, u=105, v=19] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=2603, counter=10, r=1, R=52, u=105, v=21] [L34] EXPR counter++ VAL [\old(counter)=0, A=2603, counter=11, counter++=10, r=1, R=52, u=105, v=21] [L34] COND FALSE !(counter++<10) [L48] CALL __VERIFIER_assert(((long long) 4*A) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=0, \old(counter)=0, counter=11] [L12] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=11] [L14] 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: 8.3s, OverallIterations: 7, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 172 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 171 mSDsluCounter, 537 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 368 mSDsCounter, 85 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 157 IncrementalHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 85 mSolverCounterUnsat, 169 mSDtfsCounter, 157 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 318 GetRequests, 270 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=6, InterpolantAutomatonStates: 51, 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, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 301 NumberOfCodeBlocks, 301 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 299 ConstructedInterpolants, 0 QuantifiedInterpolants, 779 SizeOfPredicates, 17 NumberOfNonLiveVariables, 665 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! [2022-03-20 05:50:18,458 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...