/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 06:03:39,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 06:03:39,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 06:03:39,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-06 06:03:39,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-06 06:03:39,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-06 06:03:39,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-06 06:03:39,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-06 06:03:39,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-06 06:03:39,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-06 06:03:39,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-06 06:03:39,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-06 06:03:39,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 06:03:39,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 06:03:39,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 06:03:39,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 06:03:39,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 06:03:39,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 06:03:39,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 06:03:39,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 06:03:39,317 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 06:03:39,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 06:03:39,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 06:03:39,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 06:03:39,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 06:03:39,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-06 06:03:39,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-06 06:03:39,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-06 06:03:39,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-06 06:03:39,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-06 06:03:39,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-06 06:03:39,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-06 06:03:39,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-06 06:03:39,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-06 06:03:39,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 06:03:39,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 06:03:39,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 06:03:39,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-06 06:03:39,342 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 06:03:39,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 06:03:39,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 06:03:39,343 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 06:03:39,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 06:03:39,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 06:03:39,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 06:03:39,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 06:03:39,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 06:03:39,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 06:03:39,345 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 06:03:39,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 06:03:39,345 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 06:03:39,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 06:03:39,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 06:03:39,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 06:03:39,345 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 06:03:39,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 06:03:39,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 06:03:39,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 06:03:39,345 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 06:03:39,346 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 06:03:39,346 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 06:03:39,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 06:03:39,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 06:03:39,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 06:03:39,571 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 06:03:39,572 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 06:03:39,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound5.c [2022-04-06 06:03:39,610 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9de2fb33b/eeaade852c3145f78d56394a6e2f4f13/FLAG8321437f4 [2022-04-06 06:03:39,987 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 06:03:39,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound5.c [2022-04-06 06:03:39,992 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9de2fb33b/eeaade852c3145f78d56394a6e2f4f13/FLAG8321437f4 [2022-04-06 06:03:40,004 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9de2fb33b/eeaade852c3145f78d56394a6e2f4f13 [2022-04-06 06:03:40,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 06:03:40,006 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 06:03:40,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 06:03:40,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 06:03:40,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 06:03:40,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 06:03:40" (1/1) ... [2022-04-06 06:03:40,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@618d77eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:03:40, skipping insertion in model container [2022-04-06 06:03:40,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 06:03:40" (1/1) ... [2022-04-06 06:03:40,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 06:03:40,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 06:03:40,154 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/bresenham-ll_valuebound5.c[597,610] [2022-04-06 06:03:40,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 06:03:40,180 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 06:03:40,188 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/bresenham-ll_valuebound5.c[597,610] [2022-04-06 06:03:40,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 06:03:40,200 INFO L208 MainTranslator]: Completed translation [2022-04-06 06:03:40,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:03:40 WrapperNode [2022-04-06 06:03:40,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 06:03:40,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 06:03:40,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 06:03:40,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 06:03:40,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:03:40" (1/1) ... [2022-04-06 06:03:40,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:03:40" (1/1) ... [2022-04-06 06:03:40,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:03:40" (1/1) ... [2022-04-06 06:03:40,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:03:40" (1/1) ... [2022-04-06 06:03:40,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:03:40" (1/1) ... [2022-04-06 06:03:40,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:03:40" (1/1) ... [2022-04-06 06:03:40,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:03:40" (1/1) ... [2022-04-06 06:03:40,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 06:03:40,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 06:03:40,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 06:03:40,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 06:03:40,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:03:40" (1/1) ... [2022-04-06 06:03:40,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 06:03:40,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:03:40,241 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) [2022-04-06 06:03:40,242 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 [2022-04-06 06:03:40,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 06:03:40,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 06:03:40,265 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 06:03:40,265 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-06 06:03:40,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 06:03:40,265 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 06:03:40,265 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 06:03:40,265 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 06:03:40,265 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 06:03:40,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 06:03:40,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 06:03:40,266 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-06 06:03:40,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 06:03:40,266 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 06:03:40,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 06:03:40,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 06:03:40,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 06:03:40,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 06:03:40,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 06:03:40,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 06:03:40,309 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 06:03:40,310 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 06:03:40,465 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 06:03:40,470 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 06:03:40,470 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 06:03:40,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 06:03:40 BoogieIcfgContainer [2022-04-06 06:03:40,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 06:03:40,472 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 06:03:40,473 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 06:03:40,473 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 06:03:40,476 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 06:03:40" (1/1) ... [2022-04-06 06:03:40,477 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-06 06:03:40,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 06:03:40 BasicIcfg [2022-04-06 06:03:40,498 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 06:03:40,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 06:03:40,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 06:03:40,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 06:03:40,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 06:03:40" (1/4) ... [2022-04-06 06:03:40,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@250e9624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 06:03:40, skipping insertion in model container [2022-04-06 06:03:40,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:03:40" (2/4) ... [2022-04-06 06:03:40,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@250e9624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 06:03:40, skipping insertion in model container [2022-04-06 06:03:40,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 06:03:40" (3/4) ... [2022-04-06 06:03:40,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@250e9624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 06:03:40, skipping insertion in model container [2022-04-06 06:03:40,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 06:03:40" (4/4) ... [2022-04-06 06:03:40,504 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound5.cJordan [2022-04-06 06:03:40,508 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-06 06:03:40,508 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 06:03:40,545 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 06:03:40,550 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 [2022-04-06 06:03:40,550 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 06:03:40,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-06 06:03:40,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-06 06:03:40,572 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:03:40,573 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 06:03:40,573 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:03:40,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:03:40,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1563578423, now seen corresponding path program 1 times [2022-04-06 06:03:40,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:03:40,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585492658] [2022-04-06 06:03:40,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:03:40,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:03:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:03:40,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 06:03:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:03:40,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 06:03:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:03:40,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 06:03:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:03:40,778 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 06:03:40,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:03:40,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585492658] [2022-04-06 06:03:40,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585492658] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 06:03:40,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 06:03:40,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 06:03:40,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556181685] [2022-04-06 06:03:40,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 06:03:40,784 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 06:03:40,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:03:40,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 06:03:40,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 06:03:40,814 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-06 06:03:40,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:03:40,869 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-04-06 06:03:40,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 06:03:40,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-04-06 06:03:40,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:03:40,878 INFO L225 Difference]: With dead ends: 32 [2022-04-06 06:03:40,879 INFO L226 Difference]: Without dead ends: 27 [2022-04-06 06:03:40,880 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 06:03:40,883 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 06:03:40,885 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 34 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 06:03:40,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-04-06 06:03:40,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-04-06 06:03:40,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-06 06:03:40,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-04-06 06:03:40,914 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 23 [2022-04-06 06:03:40,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:03:40,914 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-04-06 06:03:40,915 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-06 06:03:40,915 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-04-06 06:03:40,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-06 06:03:40,916 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:03:40,917 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 06:03:40,917 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 06:03:40,917 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:03:40,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:03:40,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1863481077, now seen corresponding path program 1 times [2022-04-06 06:03:40,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:03:40,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865505729] [2022-04-06 06:03:40,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:03:40,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:03:40,953 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:03:40,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [598884355] [2022-04-06 06:03:40,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:03:40,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:03:40,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:03:40,964 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) [2022-04-06 06:03:40,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 06:03:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:03:41,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-06 06:03:41,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:03:41,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 06:03:41,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 06:03:41,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:03:41,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865505729] [2022-04-06 06:03:41,171 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:03:41,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598884355] [2022-04-06 06:03:41,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598884355] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 06:03:41,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 06:03:41,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 06:03:41,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791582640] [2022-04-06 06:03:41,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 06:03:41,177 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 06:03:41,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:03:41,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 06:03:41,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 06:03:41,178 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 06:03:41,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:03:41,271 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-04-06 06:03:41,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 06:03:41,271 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-04-06 06:03:41,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:03:41,272 INFO L225 Difference]: With dead ends: 37 [2022-04-06 06:03:41,273 INFO L226 Difference]: Without dead ends: 35 [2022-04-06 06:03:41,273 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-06 06:03:41,274 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 06:03:41,274 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 91 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 06:03:41,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-04-06 06:03:41,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2022-04-06 06:03:41,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-06 06:03:41,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-04-06 06:03:41,278 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 23 [2022-04-06 06:03:41,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:03:41,279 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-04-06 06:03:41,279 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 06:03:41,280 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-04-06 06:03:41,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-04-06 06:03:41,280 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:03:41,280 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 06:03:41,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-06 06:03:41,481 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 [2022-04-06 06:03:41,481 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:03:41,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:03:41,482 INFO L85 PathProgramCache]: Analyzing trace with hash -646008129, now seen corresponding path program 1 times [2022-04-06 06:03:41,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:03:41,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852947694] [2022-04-06 06:03:41,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:03:41,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:03:41,492 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:03:41,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1425449755] [2022-04-06 06:03:41,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:03:41,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:03:41,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:03:41,495 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) [2022-04-06 06:03:41,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 06:03:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:03:41,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-06 06:03:41,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:03:41,684 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 06:03:41,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 06:03:41,829 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-06 06:03:41,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:03:41,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852947694] [2022-04-06 06:03:41,832 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:03:41,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425449755] [2022-04-06 06:03:41,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425449755] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 06:03:41,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 06:03:41,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2022-04-06 06:03:41,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226791961] [2022-04-06 06:03:41,833 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 06:03:41,833 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 06:03:41,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:03:41,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 06:03:41,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-04-06 06:03:41,835 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-06 06:03:42,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:03:42,057 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2022-04-06 06:03:42,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 06:03:42,058 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 32 [2022-04-06 06:03:42,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:03:42,059 INFO L225 Difference]: With dead ends: 46 [2022-04-06 06:03:42,059 INFO L226 Difference]: Without dead ends: 42 [2022-04-06 06:03:42,060 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-04-06 06:03:42,060 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 06:03:42,061 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 110 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 06:03:42,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-04-06 06:03:42,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-04-06 06:03:42,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-06 06:03:42,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-04-06 06:03:42,064 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 32 [2022-04-06 06:03:42,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:03:42,065 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-04-06 06:03:42,065 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-06 06:03:42,065 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-04-06 06:03:42,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-06 06:03:42,065 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:03:42,066 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 06:03:42,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-04-06 06:03:42,266 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 [2022-04-06 06:03:42,266 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:03:42,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:03:42,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1661983408, now seen corresponding path program 1 times [2022-04-06 06:03:42,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:03:42,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103224157] [2022-04-06 06:03:42,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:03:42,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:03:42,278 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:03:42,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558326062] [2022-04-06 06:03:42,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:03:42,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:03:42,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:03:42,279 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) [2022-04-06 06:03:42,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 06:03:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:03:42,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 26 conjunts are in the unsatisfiable core [2022-04-06 06:03:42,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:03:42,593 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-06 06:03:42,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 06:03:43,004 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-06 06:03:43,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:03:43,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103224157] [2022-04-06 06:03:43,004 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:03:43,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558326062] [2022-04-06 06:03:43,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558326062] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 06:03:43,005 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 06:03:43,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 22 [2022-04-06 06:03:43,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901509989] [2022-04-06 06:03:43,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 06:03:43,005 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-04-06 06:03:43,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:03:43,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-04-06 06:03:43,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-04-06 06:03:43,006 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-04-06 06:03:43,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:03:43,479 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-04-06 06:03:43,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-04-06 06:03:43,479 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 39 [2022-04-06 06:03:43,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:03:43,480 INFO L225 Difference]: With dead ends: 59 [2022-04-06 06:03:43,480 INFO L226 Difference]: Without dead ends: 53 [2022-04-06 06:03:43,481 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=989, Unknown=0, NotChecked=0, Total=1190 [2022-04-06 06:03:43,481 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 25 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 06:03:43,481 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 199 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 219 Invalid, 0 Unknown, 86 Unchecked, 0.1s Time] [2022-04-06 06:03:43,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-04-06 06:03:43,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2022-04-06 06:03:43,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-06 06:03:43,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2022-04-06 06:03:43,487 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 39 [2022-04-06 06:03:43,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:03:43,487 INFO L478 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2022-04-06 06:03:43,487 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-04-06 06:03:43,488 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2022-04-06 06:03:43,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-04-06 06:03:43,488 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:03:43,488 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 06:03:43,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-06 06:03:43,689 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 [2022-04-06 06:03:43,689 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:03:43,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:03:43,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1381917339, now seen corresponding path program 1 times [2022-04-06 06:03:43,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:03:43,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263427280] [2022-04-06 06:03:43,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:03:43,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:03:43,699 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:03:43,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [177186317] [2022-04-06 06:03:43,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:03:43,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:03:43,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:03:43,716 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 06:03:43,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-06 06:03:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:03:43,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjunts are in the unsatisfiable core [2022-04-06 06:03:43,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:03:43,859 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 06:03:43,861 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 06:03:46,576 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-04-06 06:03:46,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 06:03:46,764 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-04-06 06:03:46,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:03:46,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263427280] [2022-04-06 06:03:46,764 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:03:46,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177186317] [2022-04-06 06:03:46,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177186317] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 06:03:46,764 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 06:03:46,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2022-04-06 06:03:46,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115795842] [2022-04-06 06:03:46,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 06:03:46,765 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 06:03:46,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:03:46,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 06:03:46,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-04-06 06:03:46,766 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 14 states, 10 states have (on average 2.9) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-04-06 06:03:48,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 06:03:52,872 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 06:03:54,878 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 06:03:57,032 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 06:03:59,051 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 06:04:01,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:04:01,215 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-04-06 06:04:01,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 06:04:01,216 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.9) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 48 [2022-04-06 06:04:01,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:04:01,217 INFO L225 Difference]: With dead ends: 59 [2022-04-06 06:04:01,217 INFO L226 Difference]: Without dead ends: 55 [2022-04-06 06:04:01,217 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=66, Invalid=238, Unknown=2, NotChecked=0, Total=306 [2022-04-06 06:04:01,218 INFO L913 BasicCegarLoop]: 19 mSDtfsCounter, 20 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 15 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-04-06 06:04:01,218 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 163 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 164 Invalid, 5 Unknown, 0 Unchecked, 10.3s Time] [2022-04-06 06:04:01,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-04-06 06:04:01,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2022-04-06 06:04:01,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 10 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-06 06:04:01,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2022-04-06 06:04:01,222 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 48 [2022-04-06 06:04:01,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:04:01,222 INFO L478 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2022-04-06 06:04:01,222 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.9) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-04-06 06:04:01,222 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2022-04-06 06:04:01,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-04-06 06:04:01,223 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:04:01,223 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 06:04:01,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-06 06:04:01,443 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:04:01,444 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:04:01,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:04:01,444 INFO L85 PathProgramCache]: Analyzing trace with hash -545218702, now seen corresponding path program 1 times [2022-04-06 06:04:01,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:04:01,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615766108] [2022-04-06 06:04:01,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:04:01,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:04:01,455 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:04:01,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [616529474] [2022-04-06 06:04:01,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:04:01,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:04:01,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:04:01,457 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 06:04:01,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-06 06:04:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:04:01,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 06:04:01,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:04:01,698 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-04-06 06:04:01,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 06:04:01,879 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-04-06 06:04:01,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:04:01,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615766108] [2022-04-06 06:04:01,879 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:04:01,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616529474] [2022-04-06 06:04:01,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616529474] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 06:04:01,880 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 06:04:01,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-04-06 06:04:01,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882817001] [2022-04-06 06:04:01,880 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 06:04:01,880 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 06:04:01,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:04:01,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 06:04:01,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-04-06 06:04:01,881 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 10 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-04-06 06:04:02,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:04:02,059 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2022-04-06 06:04:02,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 06:04:02,059 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 10 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) Word has length 57 [2022-04-06 06:04:02,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:04:02,060 INFO L225 Difference]: With dead ends: 72 [2022-04-06 06:04:02,060 INFO L226 Difference]: Without dead ends: 72 [2022-04-06 06:04:02,061 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-04-06 06:04:02,061 INFO L913 BasicCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 06:04:02,061 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 195 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 06:04:02,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-04-06 06:04:02,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 56. [2022-04-06 06:04:02,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 11 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-06 06:04:02,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2022-04-06 06:04:02,066 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 57 [2022-04-06 06:04:02,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:04:02,067 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2022-04-06 06:04:02,067 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 10 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-04-06 06:04:02,067 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2022-04-06 06:04:02,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-04-06 06:04:02,068 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:04:02,068 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 06:04:02,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-06 06:04:02,283 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:04:02,284 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:04:02,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:04:02,284 INFO L85 PathProgramCache]: Analyzing trace with hash 494880272, now seen corresponding path program 2 times [2022-04-06 06:04:02,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:04:02,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111970693] [2022-04-06 06:04:02,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:04:02,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:04:02,291 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:04:02,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445058987] [2022-04-06 06:04:02,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 06:04:02,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:04:02,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:04:02,293 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 06:04:02,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-06 06:04:02,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 06:04:02,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 06:04:02,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-06 06:04:02,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:04:02,434 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-04-06 06:04:02,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 06:04:02,552 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-04-06 06:04:02,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:04:02,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111970693] [2022-04-06 06:04:02,553 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:04:02,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445058987] [2022-04-06 06:04:02,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445058987] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 06:04:02,553 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 06:04:02,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2022-04-06 06:04:02,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647000206] [2022-04-06 06:04:02,553 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 06:04:02,553 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 06:04:02,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:04:02,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 06:04:02,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-06 06:04:02,554 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-04-06 06:04:02,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:04:02,619 INFO L93 Difference]: Finished difference Result 77 states and 94 transitions. [2022-04-06 06:04:02,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 06:04:02,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 57 [2022-04-06 06:04:02,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:04:02,620 INFO L225 Difference]: With dead ends: 77 [2022-04-06 06:04:02,621 INFO L226 Difference]: Without dead ends: 77 [2022-04-06 06:04:02,621 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-04-06 06:04:02,621 INFO L913 BasicCegarLoop]: 34 mSDtfsCounter, 5 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 06:04:02,622 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 113 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 06:04:02,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-04-06 06:04:02,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2022-04-06 06:04:02,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 55 states have internal predecessors, (64), 15 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-04-06 06:04:02,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2022-04-06 06:04:02,630 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 57 [2022-04-06 06:04:02,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:04:02,630 INFO L478 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2022-04-06 06:04:02,630 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-04-06 06:04:02,630 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2022-04-06 06:04:02,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-04-06 06:04:02,631 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:04:02,631 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 06:04:02,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-06 06:04:02,847 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:04:02,848 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:04:02,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:04:02,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1739644753, now seen corresponding path program 3 times [2022-04-06 06:04:02,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:04:02,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340459652] [2022-04-06 06:04:02,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:04:02,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:04:02,860 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:04:02,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1609810630] [2022-04-06 06:04:02,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-06 06:04:02,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:04:02,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:04:02,861 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 06:04:02,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-06 06:04:02,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-04-06 06:04:02,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 06:04:02,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 31 conjunts are in the unsatisfiable core [2022-04-06 06:04:02,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:04:04,335 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 06:04:04,339 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 06:04:04,349 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 06:04:09,710 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-04-06 06:04:09,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 06:04:10,169 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 06:04:11,296 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 06:04:36,296 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-04-06 06:04:36,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:04:36,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340459652] [2022-04-06 06:04:36,297 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:04:36,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609810630] [2022-04-06 06:04:36,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609810630] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 06:04:36,298 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 06:04:36,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 25 [2022-04-06 06:04:36,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245603164] [2022-04-06 06:04:36,298 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 06:04:36,299 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-04-06 06:04:36,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:04:36,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-04-06 06:04:36,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=496, Unknown=6, NotChecked=0, Total=600 [2022-04-06 06:04:36,300 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 25 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 22 states have internal predecessors, (44), 7 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-04-06 06:04:44,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:04:44,284 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2022-04-06 06:04:44,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-04-06 06:04:44,284 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 22 states have internal predecessors, (44), 7 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 57 [2022-04-06 06:04:44,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:04:44,285 INFO L225 Difference]: With dead ends: 78 [2022-04-06 06:04:44,285 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 06:04:44,285 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=205, Invalid=979, Unknown=6, NotChecked=0, Total=1190 [2022-04-06 06:04:44,286 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 41 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 06:04:44,286 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 113 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 204 Invalid, 0 Unknown, 56 Unchecked, 0.7s Time] [2022-04-06 06:04:44,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 06:04:44,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 06:04:44,286 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) [2022-04-06 06:04:44,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 06:04:44,287 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2022-04-06 06:04:44,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:04:44,287 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 06:04:44,287 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 22 states have internal predecessors, (44), 7 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-04-06 06:04:44,287 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 06:04:44,287 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 06:04:44,289 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 06:04:44,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-04-06 06:04:44,491 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:04:44,494 INFO L719 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2022-04-06 06:04:44,495 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 06:04:44,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 06:04:44 BasicIcfg [2022-04-06 06:04:44,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 06:04:44,501 INFO L158 Benchmark]: Toolchain (without parser) took 64494.35ms. Allocated memory was 192.9MB in the beginning and 268.4MB in the end (delta: 75.5MB). Free memory was 136.7MB in the beginning and 134.2MB in the end (delta: 2.5MB). Peak memory consumption was 79.2MB. Max. memory is 8.0GB. [2022-04-06 06:04:44,503 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 192.9MB. Free memory is still 152.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 06:04:44,503 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.73ms. Allocated memory was 192.9MB in the beginning and 268.4MB in the end (delta: 75.5MB). Free memory was 136.4MB in the beginning and 237.9MB in the end (delta: -101.5MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. [2022-04-06 06:04:44,503 INFO L158 Benchmark]: Boogie Preprocessor took 18.27ms. Allocated memory is still 268.4MB. Free memory was 237.9MB in the beginning and 236.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-06 06:04:44,504 INFO L158 Benchmark]: RCFGBuilder took 251.65ms. Allocated memory is still 268.4MB. Free memory was 236.3MB in the beginning and 225.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-06 06:04:44,504 INFO L158 Benchmark]: IcfgTransformer took 26.14ms. Allocated memory is still 268.4MB. Free memory was 225.3MB in the beginning and 224.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 06:04:44,504 INFO L158 Benchmark]: TraceAbstraction took 64000.49ms. Allocated memory is still 268.4MB. Free memory was 223.7MB in the beginning and 134.2MB in the end (delta: 89.5MB). Peak memory consumption was 89.3MB. Max. memory is 8.0GB. [2022-04-06 06:04:44,506 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 192.9MB. Free memory is still 152.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 193.73ms. Allocated memory was 192.9MB in the beginning and 268.4MB in the end (delta: 75.5MB). Free memory was 136.4MB in the beginning and 237.9MB in the end (delta: -101.5MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.27ms. Allocated memory is still 268.4MB. Free memory was 237.9MB in the beginning and 236.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 251.65ms. Allocated memory is still 268.4MB. Free memory was 236.3MB in the beginning and 225.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 26.14ms. Allocated memory is still 268.4MB. Free memory was 225.3MB in the beginning and 224.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 64000.49ms. Allocated memory is still 268.4MB. Free memory was 223.7MB in the beginning and 134.2MB in the end (delta: 89.5MB). Peak memory consumption was 89.3MB. 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: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 64.0s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 23.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 150 SdHoareTripleChecker+Valid, 11.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 143 mSDsluCounter, 1018 SdHoareTripleChecker+Invalid, 11.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 142 IncrementalHoareTripleChecker+Unchecked, 820 mSDsCounter, 82 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1125 IncrementalHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 82 mSolverCounterUnsat, 198 mSDtfsCounter, 1125 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 646 GetRequests, 515 SyntacticMatches, 8 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 34.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=7, InterpolantAutomatonStates: 99, 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, 8 MinimizatonAttempts, 31 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 38.2s InterpolantComputationTime, 336 NumberOfCodeBlocks, 318 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 612 ConstructedInterpolants, 6 QuantifiedInterpolants, 3257 SizeOfPredicates, 49 NumberOfNonLiveVariables, 873 ConjunctsInSsa, 124 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 389/480 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! [2022-04-06 06:04:44,629 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...