/usr/bin/java -ea -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/geo2-ll_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-07 19:34:48,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-07 19:34:48,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-07 19:34:48,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-07 19:34:48,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-07 19:34:48,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-07 19:34:48,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-07 19:34:48,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-07 19:34:48,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-07 19:34:48,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-07 19:34:48,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-07 19:34:48,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-07 19:34:48,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-07 19:34:48,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-07 19:34:48,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-07 19:34:48,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-07 19:34:48,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-07 19:34:48,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-07 19:34:48,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-07 19:34:48,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-07 19:34:48,521 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-07 19:34:48,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-07 19:34:48,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-07 19:34:48,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-07 19:34:48,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-07 19:34:48,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-07 19:34:48,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-07 19:34:48,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-07 19:34:48,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-07 19:34:48,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-07 19:34:48,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-07 19:34:48,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-07 19:34:48,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-07 19:34:48,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-07 19:34:48,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-07 19:34:48,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-07 19:34:48,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-07 19:34:48,532 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-07 19:34:48,541 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-07 19:34:48,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-07 19:34:48,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-07 19:34:48,542 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-07 19:34:48,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-07 19:34:48,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-07 19:34:48,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-07 19:34:48,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-07 19:34:48,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-07 19:34:48,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-07 19:34:48,543 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-07 19:34:48,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-07 19:34:48,543 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-07 19:34:48,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-07 19:34:48,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-07 19:34:48,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-07 19:34:48,544 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-07 19:34:48,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-07 19:34:48,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 19:34:48,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-07 19:34:48,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-07 19:34:48,544 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-07 19:34:48,544 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-07 19:34:48,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-07 19:34:48,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-07 19:34:48,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-07 19:34:48,762 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-07 19:34:48,763 INFO L275 PluginConnector]: CDTParser initialized [2022-04-07 19:34:48,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_unwindbound1.c [2022-04-07 19:34:48,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6e416a11/d15da8cae0fd4215a8b85c494ba2cffe/FLAG6fd4a9b28 [2022-04-07 19:34:49,188 INFO L306 CDTParser]: Found 1 translation units. [2022-04-07 19:34:49,189 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_unwindbound1.c [2022-04-07 19:34:49,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6e416a11/d15da8cae0fd4215a8b85c494ba2cffe/FLAG6fd4a9b28 [2022-04-07 19:34:49,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6e416a11/d15da8cae0fd4215a8b85c494ba2cffe [2022-04-07 19:34:49,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-07 19:34:49,204 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-07 19:34:49,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-07 19:34:49,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-07 19:34:49,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-07 19:34:49,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 07:34:49" (1/1) ... [2022-04-07 19:34:49,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7efad25f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 07:34:49, skipping insertion in model container [2022-04-07 19:34:49,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 07:34:49" (1/1) ... [2022-04-07 19:34:49,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-07 19:34:49,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-07 19:34:49,378 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/geo2-ll_unwindbound1.c[525,538] [2022-04-07 19:34:49,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 19:34:49,410 INFO L203 MainTranslator]: Completed pre-run [2022-04-07 19:34:49,419 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/geo2-ll_unwindbound1.c[525,538] [2022-04-07 19:34:49,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 19:34:49,436 INFO L208 MainTranslator]: Completed translation [2022-04-07 19:34:49,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 07:34:49 WrapperNode [2022-04-07 19:34:49,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-07 19:34:49,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-07 19:34:49,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-07 19:34:49,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-07 19:34:49,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 07:34:49" (1/1) ... [2022-04-07 19:34:49,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 07:34:49" (1/1) ... [2022-04-07 19:34:49,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 07:34:49" (1/1) ... [2022-04-07 19:34:49,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 07:34:49" (1/1) ... [2022-04-07 19:34:49,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 07:34:49" (1/1) ... [2022-04-07 19:34:49,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 07:34:49" (1/1) ... [2022-04-07 19:34:49,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 07:34:49" (1/1) ... [2022-04-07 19:34:49,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-07 19:34:49,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-07 19:34:49,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-07 19:34:49,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-07 19:34:49,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 07:34:49" (1/1) ... [2022-04-07 19:34:49,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 19:34:49,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 19:34:49,513 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) [2022-04-07 19:34:49,530 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 [2022-04-07 19:34:49,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-07 19:34:49,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-07 19:34:49,543 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-07 19:34:49,543 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-07 19:34:49,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-07 19:34:49,543 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-07 19:34:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-07 19:34:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-07 19:34:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-07 19:34:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-07 19:34:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-07 19:34:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-07 19:34:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-07 19:34:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-07 19:34:49,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-07 19:34:49,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-07 19:34:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-07 19:34:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-07 19:34:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-07 19:34:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-07 19:34:49,594 INFO L234 CfgBuilder]: Building ICFG [2022-04-07 19:34:49,595 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-07 19:34:49,738 INFO L275 CfgBuilder]: Performing block encoding [2022-04-07 19:34:49,743 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-07 19:34:49,743 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-07 19:34:49,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 07:34:49 BoogieIcfgContainer [2022-04-07 19:34:49,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-07 19:34:49,745 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-07 19:34:49,745 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-07 19:34:49,746 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-07 19:34:49,761 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 07:34:49" (1/1) ... [2022-04-07 19:34:49,763 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-07 19:34:49,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 07.04 07:34:49 BasicIcfg [2022-04-07 19:34:49,779 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-07 19:34:49,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-07 19:34:49,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-07 19:34:49,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-07 19:34:49,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.04 07:34:49" (1/4) ... [2022-04-07 19:34:49,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a619761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 07:34:49, skipping insertion in model container [2022-04-07 19:34:49,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 07:34:49" (2/4) ... [2022-04-07 19:34:49,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a619761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 07:34:49, skipping insertion in model container [2022-04-07 19:34:49,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 07:34:49" (3/4) ... [2022-04-07 19:34:49,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a619761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.04 07:34:49, skipping insertion in model container [2022-04-07 19:34:49,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 07.04 07:34:49" (4/4) ... [2022-04-07 19:34:49,785 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_unwindbound1.cJordan [2022-04-07 19:34:49,801 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-07 19:34:49,801 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-07 19:34:49,829 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-07 19:34:49,841 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 [2022-04-07 19:34:49,841 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-07 19:34:49,855 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-07 19:34:49,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-07 19:34:49,862 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 19:34:49,862 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 19:34:49,863 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 19:34:49,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 19:34:49,869 INFO L85 PathProgramCache]: Analyzing trace with hash -630084848, now seen corresponding path program 1 times [2022-04-07 19:34:49,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 19:34:49,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640360160] [2022-04-07 19:34:49,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 19:34:49,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 19:34:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 19:34:50,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 19:34:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 19:34:50,052 INFO L290 TraceCheckUtils]: 0: Hoare triple {30#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#length_1| 2) 10) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {25#true} is VALID [2022-04-07 19:34:50,052 INFO L290 TraceCheckUtils]: 1: Hoare triple {25#true} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-07 19:34:50,052 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {25#true} {25#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-07 19:34:50,059 INFO L272 TraceCheckUtils]: 0: Hoare triple {25#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {30#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-07 19:34:50,060 INFO L290 TraceCheckUtils]: 1: Hoare triple {30#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#length_1| 2) 10) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {25#true} is VALID [2022-04-07 19:34:50,061 INFO L290 TraceCheckUtils]: 2: Hoare triple {25#true} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-07 19:34:50,061 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {25#true} {25#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-07 19:34:50,061 INFO L272 TraceCheckUtils]: 4: Hoare triple {25#true} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-07 19:34:50,061 INFO L290 TraceCheckUtils]: 5: Hoare triple {25#true} [61] mainENTRY-->L34-3: Formula: (and (<= |v_main_#t~nondet5_2| 2147483647) (= v_main_~k~0_2 |v_main_#t~nondet5_2|) (= v_main_~c~0_2 1) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (= v_main_~y~0_2 1) (= v_main_~x~0_2 1) (= v_main_~z~0_2 |v_main_#t~nondet4_2|)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2, main_~z~0=v_main_~z~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_~x~0, main_~k~0, main_~z~0, main_~c~0, main_~y~0] {25#true} is VALID [2022-04-07 19:34:50,062 INFO L290 TraceCheckUtils]: 6: Hoare triple {25#true} [63] L34-3-->L34-4: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] {26#false} is VALID [2022-04-07 19:34:50,063 INFO L272 TraceCheckUtils]: 7: Hoare triple {26#false} [65] L34-4-->__VERIFIER_assertENTRY: Formula: (= (ite (= (+ (* (- 1) (* v_main_~y~0_9 v_main_~z~0_8)) (* v_main_~x~0_9 v_main_~z~0_8) (* (- 1) v_main_~x~0_9) 1) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_2|) InVars {main_~y~0=v_main_~y~0_9, main_~x~0=v_main_~x~0_9, main_~z~0=v_main_~z~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~z~0, main_~y~0] {26#false} is VALID [2022-04-07 19:34:50,063 INFO L290 TraceCheckUtils]: 8: Hoare triple {26#false} [69] __VERIFIER_assertENTRY-->L15: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {26#false} is VALID [2022-04-07 19:34:50,063 INFO L290 TraceCheckUtils]: 9: Hoare triple {26#false} [72] L15-->L16: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {26#false} is VALID [2022-04-07 19:34:50,063 INFO L290 TraceCheckUtils]: 10: Hoare triple {26#false} [76] L16-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {26#false} is VALID [2022-04-07 19:34:50,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 19:34:50,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 19:34:50,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640360160] [2022-04-07 19:34:50,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640360160] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 19:34:50,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 19:34:50,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 19:34:50,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087248763] [2022-04-07 19:34:50,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 19:34:50,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-07 19:34:50,071 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-07 19:34:50,073 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 19:34:50,094 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 19:34:50,094 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 19:34:50,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-07 19:34:50,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 19:34:50,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-07 19:34:50,117 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 19:34:50,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 19:34:50,204 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-04-07 19:34:50,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 19:34:50,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-07 19:34:50,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 19:34:50,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 19:34:50,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2022-04-07 19:34:50,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 19:34:50,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2022-04-07 19:34:50,214 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 28 transitions. [2022-04-07 19:34:50,250 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 19:34:50,257 INFO L225 Difference]: With dead ends: 23 [2022-04-07 19:34:50,258 INFO L226 Difference]: Without dead ends: 18 [2022-04-07 19:34:50,259 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-07 19:34:50,263 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 19:34:50,265 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 27 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 19:34:50,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-04-07 19:34:50,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-04-07 19:34:50,283 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-07 19:34:50,283 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 19:34:50,285 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 19:34:50,285 INFO L87 Difference]: Start difference. First operand 18 states. Second operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 19:34:50,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 19:34:50,290 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-04-07 19:34:50,290 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-04-07 19:34:50,290 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 19:34:50,290 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 19:34:50,290 INFO L74 IsIncluded]: Start isIncluded. First operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 18 states. [2022-04-07 19:34:50,291 INFO L87 Difference]: Start difference. First operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 18 states. [2022-04-07 19:34:50,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 19:34:50,295 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-04-07 19:34:50,295 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-04-07 19:34:50,295 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 19:34:50,295 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 19:34:50,295 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-07 19:34:50,296 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-07 19:34:50,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 19:34:50,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-04-07 19:34:50,300 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-04-07 19:34:50,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 19:34:50,300 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-04-07 19:34:50,300 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 19:34:50,300 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-07 19:34:50,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-07 19:34:50,302 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 19:34:50,302 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 19:34:50,304 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-07 19:34:50,305 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 19:34:50,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 19:34:50,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1971636769, now seen corresponding path program 1 times [2022-04-07 19:34:50,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 19:34:50,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704316872] [2022-04-07 19:34:50,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 19:34:50,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 19:34:50,329 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-07 19:34:50,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29621125] [2022-04-07 19:34:50,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 19:34:50,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 19:34:50,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 19:34:50,331 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) [2022-04-07 19:34:50,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-07 19:34:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 19:34:50,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-07 19:34:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 19:34:50,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 19:34:50,497 INFO L272 TraceCheckUtils]: 0: Hoare triple {109#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {109#true} is VALID [2022-04-07 19:34:50,498 INFO L290 TraceCheckUtils]: 1: Hoare triple {109#true} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#length_1| 2) 10) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {117#(<= ~counter~0 0)} is VALID [2022-04-07 19:34:50,499 INFO L290 TraceCheckUtils]: 2: Hoare triple {117#(<= ~counter~0 0)} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {117#(<= ~counter~0 0)} is VALID [2022-04-07 19:34:50,500 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {117#(<= ~counter~0 0)} {109#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {117#(<= ~counter~0 0)} is VALID [2022-04-07 19:34:50,500 INFO L272 TraceCheckUtils]: 4: Hoare triple {117#(<= ~counter~0 0)} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {117#(<= ~counter~0 0)} is VALID [2022-04-07 19:34:50,501 INFO L290 TraceCheckUtils]: 5: Hoare triple {117#(<= ~counter~0 0)} [61] mainENTRY-->L34-3: Formula: (and (<= |v_main_#t~nondet5_2| 2147483647) (= v_main_~k~0_2 |v_main_#t~nondet5_2|) (= v_main_~c~0_2 1) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (= v_main_~y~0_2 1) (= v_main_~x~0_2 1) (= v_main_~z~0_2 |v_main_#t~nondet4_2|)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2, main_~z~0=v_main_~z~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_~x~0, main_~k~0, main_~z~0, main_~c~0, main_~y~0] {117#(<= ~counter~0 0)} is VALID [2022-04-07 19:34:50,502 INFO L290 TraceCheckUtils]: 6: Hoare triple {117#(<= ~counter~0 0)} [64] L34-3-->L34-1: Formula: (and (= |v_main_#t~post6_5| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_5| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {133#(<= |main_#t~post6| 0)} is VALID [2022-04-07 19:34:50,502 INFO L290 TraceCheckUtils]: 7: Hoare triple {133#(<= |main_#t~post6| 0)} [66] L34-1-->L34-4: Formula: (not (< |v_main_#t~post6_2| 1)) InVars {main_#t~post6=|v_main_#t~post6_2|} OutVars{} AuxVars[] AssignedVars[main_#t~post6] {110#false} is VALID [2022-04-07 19:34:50,502 INFO L272 TraceCheckUtils]: 8: Hoare triple {110#false} [65] L34-4-->__VERIFIER_assertENTRY: Formula: (= (ite (= (+ (* (- 1) (* v_main_~y~0_9 v_main_~z~0_8)) (* v_main_~x~0_9 v_main_~z~0_8) (* (- 1) v_main_~x~0_9) 1) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_2|) InVars {main_~y~0=v_main_~y~0_9, main_~x~0=v_main_~x~0_9, main_~z~0=v_main_~z~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~z~0, main_~y~0] {110#false} is VALID [2022-04-07 19:34:50,502 INFO L290 TraceCheckUtils]: 9: Hoare triple {110#false} [69] __VERIFIER_assertENTRY-->L15: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {110#false} is VALID [2022-04-07 19:34:50,503 INFO L290 TraceCheckUtils]: 10: Hoare triple {110#false} [72] L15-->L16: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {110#false} is VALID [2022-04-07 19:34:50,503 INFO L290 TraceCheckUtils]: 11: Hoare triple {110#false} [76] L16-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {110#false} is VALID [2022-04-07 19:34:50,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 19:34:50,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 19:34:50,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 19:34:50,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704316872] [2022-04-07 19:34:50,503 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-07 19:34:50,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29621125] [2022-04-07 19:34:50,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29621125] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 19:34:50,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 19:34:50,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-07 19:34:50,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961994554] [2022-04-07 19:34:50,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 19:34:50,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-07 19:34:50,510 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-07 19:34:50,511 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 19:34:50,520 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 19:34:50,520 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-07 19:34:50,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-07 19:34:50,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-07 19:34:50,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-07 19:34:50,521 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 19:34:50,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 19:34:50,557 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-07 19:34:50,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-07 19:34:50,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-07 19:34:50,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 19:34:50,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 19:34:50,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2022-04-07 19:34:50,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 19:34:50,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2022-04-07 19:34:50,566 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 22 transitions. [2022-04-07 19:34:50,582 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 19:34:50,583 INFO L225 Difference]: With dead ends: 19 [2022-04-07 19:34:50,583 INFO L226 Difference]: Without dead ends: 19 [2022-04-07 19:34:50,584 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-07 19:34:50,584 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 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 [2022-04-07 19:34:50,585 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 19:34:50,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-04-07 19:34:50,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-04-07 19:34:50,586 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-07 19:34:50,587 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 19:34:50,587 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 19:34:50,587 INFO L87 Difference]: Start difference. First operand 19 states. Second operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 19:34:50,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 19:34:50,588 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-07 19:34:50,588 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-07 19:34:50,588 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 19:34:50,589 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 19:34:50,589 INFO L74 IsIncluded]: Start isIncluded. First operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 19 states. [2022-04-07 19:34:50,589 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 19 states. [2022-04-07 19:34:50,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 19:34:50,590 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-07 19:34:50,590 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-07 19:34:50,590 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 19:34:50,591 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 19:34:50,591 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-07 19:34:50,591 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-07 19:34:50,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 19:34:50,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-04-07 19:34:50,592 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2022-04-07 19:34:50,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 19:34:50,592 INFO L478 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-04-07 19:34:50,592 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 19:34:50,592 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-07 19:34:50,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-07 19:34:50,592 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 19:34:50,592 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 19:34:50,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-07 19:34:50,807 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 19:34:50,808 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 19:34:50,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 19:34:50,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1972709245, now seen corresponding path program 1 times [2022-04-07 19:34:50,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 19:34:50,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756871715] [2022-04-07 19:34:50,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 19:34:50,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 19:34:50,818 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-07 19:34:50,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1052943594] [2022-04-07 19:34:50,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 19:34:50,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 19:34:50,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 19:34:50,821 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) [2022-04-07 19:34:50,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-07 19:34:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 19:34:50,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-07 19:34:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 19:34:50,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 19:34:50,983 INFO L272 TraceCheckUtils]: 0: Hoare triple {224#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {224#true} is VALID [2022-04-07 19:34:50,983 INFO L290 TraceCheckUtils]: 1: Hoare triple {224#true} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#length_1| 2) 10) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {224#true} is VALID [2022-04-07 19:34:50,984 INFO L290 TraceCheckUtils]: 2: Hoare triple {224#true} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {224#true} is VALID [2022-04-07 19:34:50,984 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {224#true} {224#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {224#true} is VALID [2022-04-07 19:34:50,984 INFO L272 TraceCheckUtils]: 4: Hoare triple {224#true} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {224#true} is VALID [2022-04-07 19:34:50,984 INFO L290 TraceCheckUtils]: 5: Hoare triple {224#true} [61] mainENTRY-->L34-3: Formula: (and (<= |v_main_#t~nondet5_2| 2147483647) (= v_main_~k~0_2 |v_main_#t~nondet5_2|) (= v_main_~c~0_2 1) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (= v_main_~y~0_2 1) (= v_main_~x~0_2 1) (= v_main_~z~0_2 |v_main_#t~nondet4_2|)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2, main_~z~0=v_main_~z~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_~x~0, main_~k~0, main_~z~0, main_~c~0, main_~y~0] {244#(and (= main_~y~0 1) (= main_~x~0 1))} is VALID [2022-04-07 19:34:50,985 INFO L290 TraceCheckUtils]: 6: Hoare triple {244#(and (= main_~y~0 1) (= main_~x~0 1))} [64] L34-3-->L34-1: Formula: (and (= |v_main_#t~post6_5| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_5| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {244#(and (= main_~y~0 1) (= main_~x~0 1))} is VALID [2022-04-07 19:34:50,985 INFO L290 TraceCheckUtils]: 7: Hoare triple {244#(and (= main_~y~0 1) (= main_~x~0 1))} [67] L34-1-->L35: Formula: (< |v_main_#t~post6_4| 1) InVars {main_#t~post6=|v_main_#t~post6_4|} OutVars{} AuxVars[] AssignedVars[main_#t~post6] {244#(and (= main_~y~0 1) (= main_~x~0 1))} is VALID [2022-04-07 19:34:50,986 INFO L272 TraceCheckUtils]: 8: Hoare triple {244#(and (= main_~y~0 1) (= main_~x~0 1))} [70] L35-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~x~0_8) (* (- 1) (* v_main_~y~0_8 v_main_~z~0_7)) 1 (* v_main_~x~0_8 v_main_~z~0_7)) 0) 1 0)) InVars {main_~y~0=v_main_~y~0_8, main_~x~0=v_main_~x~0_8, main_~z~0=v_main_~z~0_7} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~z~0, main_~y~0] {254#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-07 19:34:50,986 INFO L290 TraceCheckUtils]: 9: Hoare triple {254#(<= 1 |__VERIFIER_assert_#in~cond|)} [69] __VERIFIER_assertENTRY-->L15: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {258#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-07 19:34:50,987 INFO L290 TraceCheckUtils]: 10: Hoare triple {258#(<= 1 __VERIFIER_assert_~cond)} [72] L15-->L16: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {225#false} is VALID [2022-04-07 19:34:50,987 INFO L290 TraceCheckUtils]: 11: Hoare triple {225#false} [76] L16-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {225#false} is VALID [2022-04-07 19:34:50,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 19:34:50,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 19:34:50,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 19:34:50,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756871715] [2022-04-07 19:34:50,987 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-07 19:34:50,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052943594] [2022-04-07 19:34:50,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052943594] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 19:34:50,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 19:34:50,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-07 19:34:50,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108547004] [2022-04-07 19:34:50,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 19:34:50,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-07 19:34:50,988 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-07 19:34:50,989 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 19:34:50,998 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 19:34:50,998 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-07 19:34:50,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-07 19:34:50,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-07 19:34:50,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-07 19:34:51,008 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 19:34:51,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 19:34:51,081 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-04-07 19:34:51,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-07 19:34:51,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-07 19:34:51,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 19:34:51,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 19:34:51,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 30 transitions. [2022-04-07 19:34:51,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 19:34:51,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 30 transitions. [2022-04-07 19:34:51,086 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 30 transitions. [2022-04-07 19:34:51,108 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 19:34:51,109 INFO L225 Difference]: With dead ends: 26 [2022-04-07 19:34:51,109 INFO L226 Difference]: Without dead ends: 25 [2022-04-07 19:34:51,110 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-07 19:34:51,110 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 19:34:51,111 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 57 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 19:34:51,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-07 19:34:51,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-04-07 19:34:51,113 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-07 19:34:51,113 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-07 19:34:51,113 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-07 19:34:51,113 INFO L87 Difference]: Start difference. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-07 19:34:51,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 19:34:51,114 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-07 19:34:51,114 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-07 19:34:51,115 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 19:34:51,115 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 19:34:51,115 INFO L74 IsIncluded]: Start isIncluded. First operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 25 states. [2022-04-07 19:34:51,115 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 25 states. [2022-04-07 19:34:51,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 19:34:51,116 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-07 19:34:51,116 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-07 19:34:51,116 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 19:34:51,116 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 19:34:51,117 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-07 19:34:51,117 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-07 19:34:51,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-07 19:34:51,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-04-07 19:34:51,118 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12 [2022-04-07 19:34:51,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 19:34:51,118 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-04-07 19:34:51,118 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 19:34:51,118 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-07 19:34:51,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-07 19:34:51,119 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 19:34:51,119 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 19:34:51,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-07 19:34:51,341 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-07 19:34:51,341 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 19:34:51,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 19:34:51,342 INFO L85 PathProgramCache]: Analyzing trace with hash -832305310, now seen corresponding path program 1 times [2022-04-07 19:34:51,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 19:34:51,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791162808] [2022-04-07 19:34:51,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 19:34:51,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 19:34:51,357 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-07 19:34:51,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062209720] [2022-04-07 19:34:51,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 19:34:51,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 19:34:51,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 19:34:51,360 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) [2022-04-07 19:34:51,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-07 19:34:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 19:34:51,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-07 19:34:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 19:34:51,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 19:34:51,538 INFO L272 TraceCheckUtils]: 0: Hoare triple {367#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {367#true} is VALID [2022-04-07 19:34:51,539 INFO L290 TraceCheckUtils]: 1: Hoare triple {367#true} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#length_1| 2) 10) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {367#true} is VALID [2022-04-07 19:34:51,540 INFO L290 TraceCheckUtils]: 2: Hoare triple {367#true} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {367#true} is VALID [2022-04-07 19:34:51,540 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {367#true} {367#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {367#true} is VALID [2022-04-07 19:34:51,540 INFO L272 TraceCheckUtils]: 4: Hoare triple {367#true} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {367#true} is VALID [2022-04-07 19:34:51,540 INFO L290 TraceCheckUtils]: 5: Hoare triple {367#true} [61] mainENTRY-->L34-3: Formula: (and (<= |v_main_#t~nondet5_2| 2147483647) (= v_main_~k~0_2 |v_main_#t~nondet5_2|) (= v_main_~c~0_2 1) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (= v_main_~y~0_2 1) (= v_main_~x~0_2 1) (= v_main_~z~0_2 |v_main_#t~nondet4_2|)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2, main_~z~0=v_main_~z~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_~x~0, main_~k~0, main_~z~0, main_~c~0, main_~y~0] {387#(and (= main_~y~0 1) (= main_~x~0 1))} is VALID [2022-04-07 19:34:51,541 INFO L290 TraceCheckUtils]: 6: Hoare triple {387#(and (= main_~y~0 1) (= main_~x~0 1))} [64] L34-3-->L34-1: Formula: (and (= |v_main_#t~post6_5| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_5| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {387#(and (= main_~y~0 1) (= main_~x~0 1))} is VALID [2022-04-07 19:34:51,541 INFO L290 TraceCheckUtils]: 7: Hoare triple {387#(and (= main_~y~0 1) (= main_~x~0 1))} [67] L34-1-->L35: Formula: (< |v_main_#t~post6_4| 1) InVars {main_#t~post6=|v_main_#t~post6_4|} OutVars{} AuxVars[] AssignedVars[main_#t~post6] {387#(and (= main_~y~0 1) (= main_~x~0 1))} is VALID [2022-04-07 19:34:51,542 INFO L272 TraceCheckUtils]: 8: Hoare triple {387#(and (= main_~y~0 1) (= main_~x~0 1))} [70] L35-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~x~0_8) (* (- 1) (* v_main_~y~0_8 v_main_~z~0_7)) 1 (* v_main_~x~0_8 v_main_~z~0_7)) 0) 1 0)) InVars {main_~y~0=v_main_~y~0_8, main_~x~0=v_main_~x~0_8, main_~z~0=v_main_~z~0_7} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~z~0, main_~y~0] {367#true} is VALID [2022-04-07 19:34:51,542 INFO L290 TraceCheckUtils]: 9: Hoare triple {367#true} [69] __VERIFIER_assertENTRY-->L15: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {367#true} is VALID [2022-04-07 19:34:51,542 INFO L290 TraceCheckUtils]: 10: Hoare triple {367#true} [73] L15-->L15-2: Formula: (not (= v___VERIFIER_assert_~cond_3 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[] {367#true} is VALID [2022-04-07 19:34:51,545 INFO L290 TraceCheckUtils]: 11: Hoare triple {367#true} [78] L15-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {367#true} is VALID [2022-04-07 19:34:51,546 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {367#true} {387#(and (= main_~y~0 1) (= main_~x~0 1))} [81] __VERIFIER_assertEXIT-->L35-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~x~0_8) (* (- 1) (* v_main_~y~0_8 v_main_~z~0_7)) 1 (* v_main_~x~0_8 v_main_~z~0_7)) 0) 1 0)) InVars {main_~y~0=v_main_~y~0_8, main_~x~0=v_main_~x~0_8, main_~z~0=v_main_~z~0_7} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~z~0, main_~y~0] {387#(and (= main_~y~0 1) (= main_~x~0 1))} is VALID [2022-04-07 19:34:51,546 INFO L290 TraceCheckUtils]: 13: Hoare triple {387#(and (= main_~y~0 1) (= main_~x~0 1))} [75] L35-1-->L34-3: Formula: (and (= v_main_~x~0_5 (+ (* v_main_~x~0_6 v_main_~z~0_5) 1)) (= v_main_~y~0_5 (* v_main_~y~0_6 v_main_~z~0_5)) (< v_main_~c~0_6 v_main_~k~0_5) (= (+ v_main_~c~0_6 1) v_main_~c~0_5)) InVars {main_~y~0=v_main_~y~0_6, main_~c~0=v_main_~c~0_6, main_~x~0=v_main_~x~0_6, main_~z~0=v_main_~z~0_5, main_~k~0=v_main_~k~0_5} OutVars{main_~y~0=v_main_~y~0_5, main_~c~0=v_main_~c~0_5, main_~x~0=v_main_~x~0_5, main_~z~0=v_main_~z~0_5, main_~k~0=v_main_~k~0_5} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_~c~0] {412#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ main_~z~0 1)))} is VALID [2022-04-07 19:34:51,547 INFO L290 TraceCheckUtils]: 14: Hoare triple {412#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ main_~z~0 1)))} [64] L34-3-->L34-1: Formula: (and (= |v_main_#t~post6_5| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_5| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {412#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ main_~z~0 1)))} is VALID [2022-04-07 19:34:51,547 INFO L290 TraceCheckUtils]: 15: Hoare triple {412#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ main_~z~0 1)))} [66] L34-1-->L34-4: Formula: (not (< |v_main_#t~post6_2| 1)) InVars {main_#t~post6=|v_main_#t~post6_2|} OutVars{} AuxVars[] AssignedVars[main_#t~post6] {412#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ main_~z~0 1)))} is VALID [2022-04-07 19:34:51,549 INFO L272 TraceCheckUtils]: 16: Hoare triple {412#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ main_~z~0 1)))} [65] L34-4-->__VERIFIER_assertENTRY: Formula: (= (ite (= (+ (* (- 1) (* v_main_~y~0_9 v_main_~z~0_8)) (* v_main_~x~0_9 v_main_~z~0_8) (* (- 1) v_main_~x~0_9) 1) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_2|) InVars {main_~y~0=v_main_~y~0_9, main_~x~0=v_main_~x~0_9, main_~z~0=v_main_~z~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~z~0, main_~y~0] {422#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-07 19:34:51,550 INFO L290 TraceCheckUtils]: 17: Hoare triple {422#(<= 1 |__VERIFIER_assert_#in~cond|)} [69] __VERIFIER_assertENTRY-->L15: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {426#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-07 19:34:51,553 INFO L290 TraceCheckUtils]: 18: Hoare triple {426#(<= 1 __VERIFIER_assert_~cond)} [72] L15-->L16: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {368#false} is VALID [2022-04-07 19:34:51,554 INFO L290 TraceCheckUtils]: 19: Hoare triple {368#false} [76] L16-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {368#false} is VALID [2022-04-07 19:34:51,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 19:34:51,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-07 19:34:51,751 INFO L290 TraceCheckUtils]: 19: Hoare triple {368#false} [76] L16-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {368#false} is VALID [2022-04-07 19:34:51,752 INFO L290 TraceCheckUtils]: 18: Hoare triple {426#(<= 1 __VERIFIER_assert_~cond)} [72] L15-->L16: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {368#false} is VALID [2022-04-07 19:34:51,752 INFO L290 TraceCheckUtils]: 17: Hoare triple {422#(<= 1 |__VERIFIER_assert_#in~cond|)} [69] __VERIFIER_assertENTRY-->L15: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {426#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-07 19:34:51,753 INFO L272 TraceCheckUtils]: 16: Hoare triple {442#(= (+ main_~x~0 (* main_~z~0 main_~y~0)) (+ (* main_~z~0 main_~x~0) 1))} [65] L34-4-->__VERIFIER_assertENTRY: Formula: (= (ite (= (+ (* (- 1) (* v_main_~y~0_9 v_main_~z~0_8)) (* v_main_~x~0_9 v_main_~z~0_8) (* (- 1) v_main_~x~0_9) 1) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_2|) InVars {main_~y~0=v_main_~y~0_9, main_~x~0=v_main_~x~0_9, main_~z~0=v_main_~z~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~z~0, main_~y~0] {422#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-07 19:34:51,753 INFO L290 TraceCheckUtils]: 15: Hoare triple {442#(= (+ main_~x~0 (* main_~z~0 main_~y~0)) (+ (* main_~z~0 main_~x~0) 1))} [66] L34-1-->L34-4: Formula: (not (< |v_main_#t~post6_2| 1)) InVars {main_#t~post6=|v_main_#t~post6_2|} OutVars{} AuxVars[] AssignedVars[main_#t~post6] {442#(= (+ main_~x~0 (* main_~z~0 main_~y~0)) (+ (* main_~z~0 main_~x~0) 1))} is VALID [2022-04-07 19:34:51,754 INFO L290 TraceCheckUtils]: 14: Hoare triple {442#(= (+ main_~x~0 (* main_~z~0 main_~y~0)) (+ (* main_~z~0 main_~x~0) 1))} [64] L34-3-->L34-1: Formula: (and (= |v_main_#t~post6_5| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_5| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {442#(= (+ main_~x~0 (* main_~z~0 main_~y~0)) (+ (* main_~z~0 main_~x~0) 1))} is VALID [2022-04-07 19:34:51,756 INFO L290 TraceCheckUtils]: 13: Hoare triple {452#(= (+ (* main_~z~0 (+ (* main_~z~0 main_~x~0) 1)) 1) (+ (* main_~z~0 main_~x~0) (* main_~z~0 (* main_~z~0 main_~y~0)) 1))} [75] L35-1-->L34-3: Formula: (and (= v_main_~x~0_5 (+ (* v_main_~x~0_6 v_main_~z~0_5) 1)) (= v_main_~y~0_5 (* v_main_~y~0_6 v_main_~z~0_5)) (< v_main_~c~0_6 v_main_~k~0_5) (= (+ v_main_~c~0_6 1) v_main_~c~0_5)) InVars {main_~y~0=v_main_~y~0_6, main_~c~0=v_main_~c~0_6, main_~x~0=v_main_~x~0_6, main_~z~0=v_main_~z~0_5, main_~k~0=v_main_~k~0_5} OutVars{main_~y~0=v_main_~y~0_5, main_~c~0=v_main_~c~0_5, main_~x~0=v_main_~x~0_5, main_~z~0=v_main_~z~0_5, main_~k~0=v_main_~k~0_5} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_~c~0] {442#(= (+ main_~x~0 (* main_~z~0 main_~y~0)) (+ (* main_~z~0 main_~x~0) 1))} is VALID [2022-04-07 19:34:51,757 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {367#true} {452#(= (+ (* main_~z~0 (+ (* main_~z~0 main_~x~0) 1)) 1) (+ (* main_~z~0 main_~x~0) (* main_~z~0 (* main_~z~0 main_~y~0)) 1))} [81] __VERIFIER_assertEXIT-->L35-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~x~0_8) (* (- 1) (* v_main_~y~0_8 v_main_~z~0_7)) 1 (* v_main_~x~0_8 v_main_~z~0_7)) 0) 1 0)) InVars {main_~y~0=v_main_~y~0_8, main_~x~0=v_main_~x~0_8, main_~z~0=v_main_~z~0_7} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~z~0, main_~y~0] {452#(= (+ (* main_~z~0 (+ (* main_~z~0 main_~x~0) 1)) 1) (+ (* main_~z~0 main_~x~0) (* main_~z~0 (* main_~z~0 main_~y~0)) 1))} is VALID [2022-04-07 19:34:51,757 INFO L290 TraceCheckUtils]: 11: Hoare triple {367#true} [78] L15-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {367#true} is VALID [2022-04-07 19:34:51,757 INFO L290 TraceCheckUtils]: 10: Hoare triple {367#true} [73] L15-->L15-2: Formula: (not (= v___VERIFIER_assert_~cond_3 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[] {367#true} is VALID [2022-04-07 19:34:51,758 INFO L290 TraceCheckUtils]: 9: Hoare triple {367#true} [69] __VERIFIER_assertENTRY-->L15: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {367#true} is VALID [2022-04-07 19:34:51,758 INFO L272 TraceCheckUtils]: 8: Hoare triple {452#(= (+ (* main_~z~0 (+ (* main_~z~0 main_~x~0) 1)) 1) (+ (* main_~z~0 main_~x~0) (* main_~z~0 (* main_~z~0 main_~y~0)) 1))} [70] L35-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~x~0_8) (* (- 1) (* v_main_~y~0_8 v_main_~z~0_7)) 1 (* v_main_~x~0_8 v_main_~z~0_7)) 0) 1 0)) InVars {main_~y~0=v_main_~y~0_8, main_~x~0=v_main_~x~0_8, main_~z~0=v_main_~z~0_7} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~z~0, main_~y~0] {367#true} is VALID [2022-04-07 19:34:51,758 INFO L290 TraceCheckUtils]: 7: Hoare triple {452#(= (+ (* main_~z~0 (+ (* main_~z~0 main_~x~0) 1)) 1) (+ (* main_~z~0 main_~x~0) (* main_~z~0 (* main_~z~0 main_~y~0)) 1))} [67] L34-1-->L35: Formula: (< |v_main_#t~post6_4| 1) InVars {main_#t~post6=|v_main_#t~post6_4|} OutVars{} AuxVars[] AssignedVars[main_#t~post6] {452#(= (+ (* main_~z~0 (+ (* main_~z~0 main_~x~0) 1)) 1) (+ (* main_~z~0 main_~x~0) (* main_~z~0 (* main_~z~0 main_~y~0)) 1))} is VALID [2022-04-07 19:34:51,759 INFO L290 TraceCheckUtils]: 6: Hoare triple {452#(= (+ (* main_~z~0 (+ (* main_~z~0 main_~x~0) 1)) 1) (+ (* main_~z~0 main_~x~0) (* main_~z~0 (* main_~z~0 main_~y~0)) 1))} [64] L34-3-->L34-1: Formula: (and (= |v_main_#t~post6_5| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_5| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {452#(= (+ (* main_~z~0 (+ (* main_~z~0 main_~x~0) 1)) 1) (+ (* main_~z~0 main_~x~0) (* main_~z~0 (* main_~z~0 main_~y~0)) 1))} is VALID [2022-04-07 19:34:51,759 INFO L290 TraceCheckUtils]: 5: Hoare triple {367#true} [61] mainENTRY-->L34-3: Formula: (and (<= |v_main_#t~nondet5_2| 2147483647) (= v_main_~k~0_2 |v_main_#t~nondet5_2|) (= v_main_~c~0_2 1) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (= v_main_~y~0_2 1) (= v_main_~x~0_2 1) (= v_main_~z~0_2 |v_main_#t~nondet4_2|)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2, main_~z~0=v_main_~z~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_~x~0, main_~k~0, main_~z~0, main_~c~0, main_~y~0] {452#(= (+ (* main_~z~0 (+ (* main_~z~0 main_~x~0) 1)) 1) (+ (* main_~z~0 main_~x~0) (* main_~z~0 (* main_~z~0 main_~y~0)) 1))} is VALID [2022-04-07 19:34:51,760 INFO L272 TraceCheckUtils]: 4: Hoare triple {367#true} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {367#true} is VALID [2022-04-07 19:34:51,760 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {367#true} {367#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {367#true} is VALID [2022-04-07 19:34:51,760 INFO L290 TraceCheckUtils]: 2: Hoare triple {367#true} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {367#true} is VALID [2022-04-07 19:34:51,760 INFO L290 TraceCheckUtils]: 1: Hoare triple {367#true} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#length_1| 2) 10) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {367#true} is VALID [2022-04-07 19:34:51,760 INFO L272 TraceCheckUtils]: 0: Hoare triple {367#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {367#true} is VALID [2022-04-07 19:34:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 19:34:51,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 19:34:51,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791162808] [2022-04-07 19:34:51,761 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-07 19:34:51,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062209720] [2022-04-07 19:34:51,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062209720] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-07 19:34:51,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 19:34:51,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2022-04-07 19:34:51,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394718707] [2022-04-07 19:34:51,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 19:34:51,761 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-04-07 19:34:51,762 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-07 19:34:51,762 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 19:34:51,784 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 19:34:51,784 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 19:34:51,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-07 19:34:51,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 19:34:51,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-04-07 19:34:51,785 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 19:34:51,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 19:34:51,858 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-04-07 19:34:51,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-07 19:34:51,858 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-04-07 19:34:51,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 19:34:51,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 19:34:51,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2022-04-07 19:34:51,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 19:34:51,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2022-04-07 19:34:51,860 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 18 transitions. [2022-04-07 19:34:51,885 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 19:34:51,885 INFO L225 Difference]: With dead ends: 23 [2022-04-07 19:34:51,885 INFO L226 Difference]: Without dead ends: 0 [2022-04-07 19:34:51,885 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-04-07 19:34:51,886 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 8 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 19:34:51,886 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 45 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 19:34:51,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-07 19:34:51,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-07 19:34:51,887 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-07 19:34:51,887 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-07 19:34:51,887 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-07 19:34:51,887 INFO L87 Difference]: Start difference. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-07 19:34:51,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 19:34:51,887 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-07 19:34:51,887 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-07 19:34:51,887 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 19:34:51,887 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 19:34:51,887 INFO L74 IsIncluded]: Start isIncluded. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-07 19:34:51,887 INFO L87 Difference]: Start difference. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-07 19:34:51,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 19:34:51,888 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-07 19:34:51,888 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-07 19:34:51,888 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 19:34:51,888 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 19:34:51,888 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-07 19:34:51,888 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-07 19:34:51,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-07 19:34:51,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-07 19:34:51,888 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2022-04-07 19:34:51,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 19:34:51,888 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-07 19:34:51,888 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 19:34:51,888 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-07 19:34:51,888 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 19:34:51,890 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-07 19:34:51,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-07 19:34:52,099 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 19:34:52,102 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-04-07 19:34:52,102 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-07 19:34:52,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.04 07:34:52 BasicIcfg [2022-04-07 19:34:52,104 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-07 19:34:52,105 INFO L158 Benchmark]: Toolchain (without parser) took 2900.71ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 122.9MB in the beginning and 129.6MB in the end (delta: -6.7MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-04-07 19:34:52,105 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 174.1MB. Free memory is still 139.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-07 19:34:52,105 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.14ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 122.7MB in the beginning and 185.7MB in the end (delta: -63.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-07 19:34:52,105 INFO L158 Benchmark]: Boogie Preprocessor took 39.83ms. Allocated memory is still 209.7MB. Free memory was 185.7MB in the beginning and 184.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-07 19:34:52,106 INFO L158 Benchmark]: RCFGBuilder took 266.40ms. Allocated memory is still 209.7MB. Free memory was 184.2MB in the beginning and 172.7MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-07 19:34:52,106 INFO L158 Benchmark]: IcfgTransformer took 34.58ms. Allocated memory is still 209.7MB. Free memory was 172.7MB in the beginning and 171.5MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-07 19:34:52,106 INFO L158 Benchmark]: TraceAbstraction took 2323.63ms. Allocated memory is still 209.7MB. Free memory was 170.7MB in the beginning and 129.6MB in the end (delta: 41.1MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. [2022-04-07 19:34:52,107 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 174.1MB. Free memory is still 139.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 232.14ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 122.7MB in the beginning and 185.7MB in the end (delta: -63.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.83ms. Allocated memory is still 209.7MB. Free memory was 185.7MB in the beginning and 184.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 266.40ms. Allocated memory is still 209.7MB. Free memory was 184.2MB in the beginning and 172.7MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 34.58ms. Allocated memory is still 209.7MB. Free memory was 172.7MB in the beginning and 171.5MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2323.63ms. Allocated memory is still 209.7MB. Free memory was 170.7MB in the beginning and 129.6MB in the end (delta: 41.1MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 174 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 105 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 57 IncrementalHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 69 mSDtfsCounter, 57 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=3, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 275 SizeOfPredicates, 4 NumberOfNonLiveVariables, 246 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 6/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-04-07 19:34:52,132 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...