/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_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 13:37:05,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 13:37:05,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 13:37:05,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 13:37:05,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 13:37:05,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 13:37:05,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 13:37:05,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 13:37:05,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 13:37:05,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 13:37:05,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 13:37:05,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 13:37:05,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 13:37:05,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 13:37:05,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 13:37:05,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 13:37:05,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 13:37:05,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 13:37:05,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 13:37:05,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 13:37:05,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 13:37:05,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 13:37:05,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 13:37:05,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 13:37:05,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 13:37:05,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 13:37:05,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 13:37:05,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 13:37:05,185 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 13:37:05,222 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 13:37:05,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 13:37:05,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 13:37:05,224 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 13:37:05,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 13:37:05,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 13:37:05,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 13:37:05,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 13:37:05,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 13:37:05,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 13:37:05,225 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 13:37:05,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 13:37:05,226 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 13:37:05,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 13:37:05,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 13:37:05,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 13:37:05,226 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 13:37:05,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 13:37:05,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 13:37:05,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 13:37:05,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 13:37:05,227 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 13:37:05,227 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 13:37:05,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 13:37:05,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 13:37:05,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 13:37:05,469 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 13:37:05,472 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 13:37:05,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound1.c [2022-01-31 13:37:05,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b134c90be/051627ab22f046be870f2d02a1ebdba1/FLAGf74bc59eb [2022-01-31 13:37:05,958 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 13:37:05,958 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound1.c [2022-01-31 13:37:05,967 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b134c90be/051627ab22f046be870f2d02a1ebdba1/FLAGf74bc59eb [2022-01-31 13:37:05,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b134c90be/051627ab22f046be870f2d02a1ebdba1 [2022-01-31 13:37:05,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 13:37:05,986 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 13:37:05,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 13:37:05,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 13:37:06,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 13:37:06,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 01:37:05" (1/1) ... [2022-01-31 13:37:06,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3340401a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:37:06, skipping insertion in model container [2022-01-31 13:37:06,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 01:37:05" (1/1) ... [2022-01-31 13:37:06,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 13:37:06,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 13:37:06,150 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_valuebound1.c[597,610] [2022-01-31 13:37:06,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 13:37:06,190 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 13:37:06,226 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_valuebound1.c[597,610] [2022-01-31 13:37:06,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 13:37:06,246 INFO L208 MainTranslator]: Completed translation [2022-01-31 13:37:06,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:37:06 WrapperNode [2022-01-31 13:37:06,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 13:37:06,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 13:37:06,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 13:37:06,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 13:37:06,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:37:06" (1/1) ... [2022-01-31 13:37:06,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:37:06" (1/1) ... [2022-01-31 13:37:06,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:37:06" (1/1) ... [2022-01-31 13:37:06,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:37:06" (1/1) ... [2022-01-31 13:37:06,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:37:06" (1/1) ... [2022-01-31 13:37:06,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:37:06" (1/1) ... [2022-01-31 13:37:06,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:37:06" (1/1) ... [2022-01-31 13:37:06,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 13:37:06,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 13:37:06,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 13:37:06,286 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 13:37:06,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:37:06" (1/1) ... [2022-01-31 13:37:06,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 13:37:06,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 13:37:06,316 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) [2022-01-31 13:37:06,325 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 [2022-01-31 13:37:06,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 13:37:06,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 13:37:06,347 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 13:37:06,347 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 13:37:06,347 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 13:37:06,348 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 13:37:06,348 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 13:37:06,348 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 13:37:06,348 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 13:37:06,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 13:37:06,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 13:37:06,348 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 13:37:06,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 13:37:06,349 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 13:37:06,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 13:37:06,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 13:37:06,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 13:37:06,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 13:37:06,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 13:37:06,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 13:37:06,406 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 13:37:06,407 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 13:37:06,551 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 13:37:06,556 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 13:37:06,556 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-31 13:37:06,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 01:37:06 BoogieIcfgContainer [2022-01-31 13:37:06,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 13:37:06,558 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 13:37:06,558 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 13:37:06,559 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 13:37:06,561 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 01:37:06" (1/1) ... [2022-01-31 13:37:06,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 01:37:06 BasicIcfg [2022-01-31 13:37:06,575 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 13:37:06,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 13:37:06,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 13:37:06,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 13:37:06,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 01:37:05" (1/4) ... [2022-01-31 13:37:06,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7247410d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 01:37:06, skipping insertion in model container [2022-01-31 13:37:06,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:37:06" (2/4) ... [2022-01-31 13:37:06,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7247410d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 01:37:06, skipping insertion in model container [2022-01-31 13:37:06,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 01:37:06" (3/4) ... [2022-01-31 13:37:06,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7247410d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 01:37:06, skipping insertion in model container [2022-01-31 13:37:06,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 01:37:06" (4/4) ... [2022-01-31 13:37:06,598 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound1.cJordan [2022-01-31 13:37:06,603 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 13:37:06,603 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 13:37:06,656 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 13:37:06,662 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 13:37:06,662 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 13:37:06,675 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) [2022-01-31 13:37:06,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-31 13:37:06,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 13:37:06,686 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 13:37:06,686 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 13:37:06,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 13:37:06,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1563578423, now seen corresponding path program 1 times [2022-01-31 13:37:06,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 13:37:06,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279971487] [2022-01-31 13:37:06,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 13:37:06,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 13:37:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 13:37:06,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 13:37:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 13:37:06,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 13:37:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 13:37:06,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 13:37:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 13:37:06,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 13:37:06,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 13:37:06,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279971487] [2022-01-31 13:37:06,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279971487] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 13:37:06,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 13:37:06,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 13:37:06,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351519950] [2022-01-31 13:37:06,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 13:37:06,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 13:37:06,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 13:37:06,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 13:37:06,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 13:37:06,932 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) [2022-01-31 13:37:06,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 13:37:06,980 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-01-31 13:37:06,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 13:37:06,985 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 [2022-01-31 13:37:06,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 13:37:06,990 INFO L225 Difference]: With dead ends: 32 [2022-01-31 13:37:06,990 INFO L226 Difference]: Without dead ends: 27 [2022-01-31 13:37:06,992 INFO L932 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 [2022-01-31 13:37:06,995 INFO L933 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 [2022-01-31 13:37:06,995 INFO L934 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] [2022-01-31 13:37:07,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-31 13:37:07,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-01-31 13:37:07,029 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) [2022-01-31 13:37:07,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-01-31 13:37:07,033 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 23 [2022-01-31 13:37:07,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 13:37:07,034 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-01-31 13:37:07,035 INFO L471 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) [2022-01-31 13:37:07,035 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-01-31 13:37:07,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-31 13:37:07,037 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 13:37:07,037 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 13:37:07,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 13:37:07,039 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 13:37:07,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 13:37:07,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1863481077, now seen corresponding path program 1 times [2022-01-31 13:37:07,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 13:37:07,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934051992] [2022-01-31 13:37:07,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 13:37:07,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 13:37:07,067 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 13:37:07,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083160270] [2022-01-31 13:37:07,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 13:37:07,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 13:37:07,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 13:37:07,070 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) [2022-01-31 13:37:07,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 13:37:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 13:37:07,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-31 13:37:07,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 13:37:07,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 13:37:07,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 13:37:07,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 13:37:07,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934051992] [2022-01-31 13:37:07,315 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 13:37:07,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083160270] [2022-01-31 13:37:07,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083160270] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 13:37:07,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 13:37:07,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 13:37:07,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877517441] [2022-01-31 13:37:07,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 13:37:07,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 13:37:07,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 13:37:07,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 13:37:07,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 13:37:07,322 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) [2022-01-31 13:37:07,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 13:37:07,431 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-01-31 13:37:07,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 13:37:07,432 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 [2022-01-31 13:37:07,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 13:37:07,434 INFO L225 Difference]: With dead ends: 37 [2022-01-31 13:37:07,434 INFO L226 Difference]: Without dead ends: 35 [2022-01-31 13:37:07,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-31 13:37:07,435 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 13:37:07,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 101 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 13:37:07,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-31 13:37:07,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2022-01-31 13:37:07,440 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) [2022-01-31 13:37:07,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-01-31 13:37:07,441 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 23 [2022-01-31 13:37:07,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 13:37:07,442 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-01-31 13:37:07,442 INFO L471 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) [2022-01-31 13:37:07,442 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-01-31 13:37:07,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-31 13:37:07,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 13:37:07,445 INFO L514 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] [2022-01-31 13:37:07,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 13:37:07,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 13:37:07,660 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 13:37:07,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 13:37:07,660 INFO L85 PathProgramCache]: Analyzing trace with hash -646008129, now seen corresponding path program 1 times [2022-01-31 13:37:07,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 13:37:07,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665027687] [2022-01-31 13:37:07,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 13:37:07,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 13:37:07,674 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 13:37:07,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404344152] [2022-01-31 13:37:07,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 13:37:07,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 13:37:07,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 13:37:07,681 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) [2022-01-31 13:37:07,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 13:37:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 13:37:07,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-31 13:37:07,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 13:37:08,088 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 13:37:08,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 13:37:08,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 13:37:08,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665027687] [2022-01-31 13:37:08,264 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 13:37:08,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404344152] [2022-01-31 13:37:08,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404344152] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 13:37:08,264 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 13:37:08,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-01-31 13:37:08,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188616622] [2022-01-31 13:37:08,264 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 13:37:08,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 13:37:08,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 13:37:08,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 13:37:08,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-01-31 13:37:08,266 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 13:37:08,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 13:37:08,386 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2022-01-31 13:37:08,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 13:37:08,387 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2022-01-31 13:37:08,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 13:37:08,387 INFO L225 Difference]: With dead ends: 48 [2022-01-31 13:37:08,388 INFO L226 Difference]: Without dead ends: 35 [2022-01-31 13:37:08,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-01-31 13:37:08,389 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 36 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 13:37:08,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 141 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 13:37:08,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-31 13:37:08,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-01-31 13:37:08,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 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) [2022-01-31 13:37:08,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2022-01-31 13:37:08,397 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 32 [2022-01-31 13:37:08,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 13:37:08,398 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2022-01-31 13:37:08,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 13:37:08,398 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2022-01-31 13:37:08,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-31 13:37:08,400 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 13:37:08,400 INFO L514 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] [2022-01-31 13:37:08,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 13:37:08,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-31 13:37:08,622 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 13:37:08,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 13:37:08,623 INFO L85 PathProgramCache]: Analyzing trace with hash 241495552, now seen corresponding path program 1 times [2022-01-31 13:37:08,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 13:37:08,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898059437] [2022-01-31 13:37:08,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 13:37:08,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 13:37:08,634 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 13:37:08,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [270983253] [2022-01-31 13:37:08,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 13:37:08,635 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 13:37:08,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 13:37:08,636 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) [2022-01-31 13:37:08,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-31 13:37:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 13:37:08,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-31 13:37:08,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 13:37:09,118 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 13:37:09,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 13:37:09,341 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 13:37:09,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 13:37:09,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898059437] [2022-01-31 13:37:09,341 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 13:37:09,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270983253] [2022-01-31 13:37:09,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270983253] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 13:37:09,342 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 13:37:09,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 17 [2022-01-31 13:37:09,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855520010] [2022-01-31 13:37:09,342 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 13:37:09,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 13:37:09,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 13:37:09,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 13:37:09,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-01-31 13:37:09,344 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 17 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-01-31 13:37:09,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 13:37:09,609 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2022-01-31 13:37:09,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 13:37:09,609 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 32 [2022-01-31 13:37:09,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 13:37:09,610 INFO L225 Difference]: With dead ends: 46 [2022-01-31 13:37:09,610 INFO L226 Difference]: Without dead ends: 44 [2022-01-31 13:37:09,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2022-01-31 13:37:09,612 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 28 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 13:37:09,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 179 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 13:37:09,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-31 13:37:09,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2022-01-31 13:37:09,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 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) [2022-01-31 13:37:09,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2022-01-31 13:37:09,617 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 32 [2022-01-31 13:37:09,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 13:37:09,617 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2022-01-31 13:37:09,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-01-31 13:37:09,618 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2022-01-31 13:37:09,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-31 13:37:09,619 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 13:37:09,619 INFO L514 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] [2022-01-31 13:37:09,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-31 13:37:09,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 13:37:09,835 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 13:37:09,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 13:37:09,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1661983408, now seen corresponding path program 1 times [2022-01-31 13:37:09,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 13:37:09,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282242296] [2022-01-31 13:37:09,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 13:37:09,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 13:37:09,848 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 13:37:09,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654130128] [2022-01-31 13:37:09,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 13:37:09,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 13:37:09,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 13:37:09,851 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) [2022-01-31 13:37:09,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-31 13:37:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 13:37:09,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-31 13:37:09,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 13:37:10,218 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-31 13:37:10,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 13:37:10,732 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-31 13:37:10,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 13:37:10,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282242296] [2022-01-31 13:37:10,733 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 13:37:10,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654130128] [2022-01-31 13:37:10,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654130128] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 13:37:10,733 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 13:37:10,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 22 [2022-01-31 13:37:10,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590840895] [2022-01-31 13:37:10,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 13:37:10,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-31 13:37:10,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 13:37:10,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-31 13:37:10,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-01-31 13:37:10,736 INFO L87 Difference]: Start difference. First operand 42 states and 46 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) [2022-01-31 13:37:11,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 13:37:11,267 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2022-01-31 13:37:11,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 13:37:11,267 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 [2022-01-31 13:37:11,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 13:37:11,268 INFO L225 Difference]: With dead ends: 53 [2022-01-31 13:37:11,268 INFO L226 Difference]: Without dead ends: 47 [2022-01-31 13:37:11,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=197, Invalid=993, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 13:37:11,270 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 36 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 13:37:11,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 177 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 142 Invalid, 0 Unknown, 51 Unchecked, 0.1s Time] [2022-01-31 13:37:11,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-31 13:37:11,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2022-01-31 13:37:11,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 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) [2022-01-31 13:37:11,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2022-01-31 13:37:11,274 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 39 [2022-01-31 13:37:11,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 13:37:11,275 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2022-01-31 13:37:11,275 INFO L471 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) [2022-01-31 13:37:11,275 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2022-01-31 13:37:11,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-31 13:37:11,276 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 13:37:11,276 INFO L514 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] [2022-01-31 13:37:11,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-31 13:37:11,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 13:37:11,487 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 13:37:11,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 13:37:11,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1739644753, now seen corresponding path program 1 times [2022-01-31 13:37:11,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 13:37:11,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509952846] [2022-01-31 13:37:11,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 13:37:11,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 13:37:11,497 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 13:37:11,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1823578537] [2022-01-31 13:37:11,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 13:37:11,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 13:37:11,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 13:37:11,498 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) [2022-01-31 13:37:11,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-31 13:37:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 13:37:11,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-31 13:37:11,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 13:37:11,834 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-31 13:37:11,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 13:37:12,118 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-31 13:37:12,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 13:37:12,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509952846] [2022-01-31 13:37:12,118 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 13:37:12,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823578537] [2022-01-31 13:37:12,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823578537] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 13:37:12,119 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 13:37:12,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-01-31 13:37:12,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581951583] [2022-01-31 13:37:12,119 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 13:37:12,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 13:37:12,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 13:37:12,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 13:37:12,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-01-31 13:37:12,121 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 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) [2022-01-31 13:37:12,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 13:37:12,478 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2022-01-31 13:37:12,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 13:37:12,479 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 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 [2022-01-31 13:37:12,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 13:37:12,480 INFO L225 Difference]: With dead ends: 70 [2022-01-31 13:37:12,480 INFO L226 Difference]: Without dead ends: 70 [2022-01-31 13:37:12,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2022-01-31 13:37:12,481 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 16 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 13:37:12,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 200 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 13:37:12,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-01-31 13:37:12,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 56. [2022-01-31 13:37:12,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.1) internal successors, (44), 40 states have internal predecessors, (44), 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) [2022-01-31 13:37:12,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2022-01-31 13:37:12,488 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 57 [2022-01-31 13:37:12,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 13:37:12,488 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2022-01-31 13:37:12,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 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) [2022-01-31 13:37:12,488 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2022-01-31 13:37:12,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-31 13:37:12,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 13:37:12,490 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 13:37:12,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-31 13:37:12,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 13:37:12,703 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 13:37:12,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 13:37:12,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1357898193, now seen corresponding path program 2 times [2022-01-31 13:37:12,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 13:37:12,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785918138] [2022-01-31 13:37:12,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 13:37:12,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 13:37:12,715 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 13:37:12,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402028658] [2022-01-31 13:37:12,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 13:37:12,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 13:37:12,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 13:37:12,717 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) [2022-01-31 13:37:12,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-31 13:37:12,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 13:37:12,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 13:37:12,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 13:37:12,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 13:37:12,923 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 74 proven. 27 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-31 13:37:12,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 13:37:13,085 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 50 proven. 23 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-31 13:37:13,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 13:37:13,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785918138] [2022-01-31 13:37:13,086 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 13:37:13,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402028658] [2022-01-31 13:37:13,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402028658] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 13:37:13,086 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 13:37:13,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-01-31 13:37:13,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367363839] [2022-01-31 13:37:13,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 13:37:13,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 13:37:13,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 13:37:13,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 13:37:13,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-31 13:37:13,088 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 7 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2022-01-31 13:37:13,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 13:37:13,139 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2022-01-31 13:37:13,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 13:37:13,140 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 7 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 75 [2022-01-31 13:37:13,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 13:37:13,141 INFO L225 Difference]: With dead ends: 66 [2022-01-31 13:37:13,141 INFO L226 Difference]: Without dead ends: 66 [2022-01-31 13:37:13,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-01-31 13:37:13,142 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 7 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 13:37:13,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 138 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 13:37:13,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-01-31 13:37:13,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 61. [2022-01-31 13:37:13,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 44 states have internal predecessors, (48), 12 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 13:37:13,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2022-01-31 13:37:13,148 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 75 [2022-01-31 13:37:13,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 13:37:13,148 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2022-01-31 13:37:13,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 7 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2022-01-31 13:37:13,148 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2022-01-31 13:37:13,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-31 13:37:13,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 13:37:13,149 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 13:37:13,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-31 13:37:13,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 13:37:13,350 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 13:37:13,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 13:37:13,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1692304622, now seen corresponding path program 3 times [2022-01-31 13:37:13,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 13:37:13,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735588925] [2022-01-31 13:37:13,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 13:37:13,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 13:37:13,360 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 13:37:13,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [938986116] [2022-01-31 13:37:13,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 13:37:13,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 13:37:13,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 13:37:13,363 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) [2022-01-31 13:37:13,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-31 13:37:13,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-31 13:37:13,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 13:37:13,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-31 13:37:13,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 13:37:13,995 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 13:37:14,000 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 13:37:14,002 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 13:37:21,216 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-01-31 13:37:21,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 13:37:21,541 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 13:37:22,494 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 13:37:44,502 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-01-31 13:37:44,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 13:37:44,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735588925] [2022-01-31 13:37:44,502 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 13:37:44,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938986116] [2022-01-31 13:37:44,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938986116] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 13:37:44,502 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 13:37:44,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 25 [2022-01-31 13:37:44,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233363295] [2022-01-31 13:37:44,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 13:37:44,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-31 13:37:44,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 13:37:44,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-31 13:37:44,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=498, Unknown=4, NotChecked=0, Total=600 [2022-01-31 13:37:44,504 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 25 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 22 states have internal predecessors, (46), 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) [2022-01-31 13:37:59,142 WARN L228 SmtUtils]: Spent 10.00s on a formula simplification. DAG size of input: 63 DAG size of output: 55 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-31 13:37:59,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 13:37:59,421 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-01-31 13:37:59,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 13:37:59,421 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 22 states have internal predecessors, (46), 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 75 [2022-01-31 13:37:59,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 13:37:59,421 INFO L225 Difference]: With dead ends: 59 [2022-01-31 13:37:59,422 INFO L226 Difference]: Without dead ends: 0 [2022-01-31 13:37:59,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 29.6s TimeCoverageRelationStatistics Valid=225, Invalid=1031, Unknown=4, NotChecked=0, Total=1260 [2022-01-31 13:37:59,423 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 31 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 13:37:59,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 187 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 207 Invalid, 0 Unknown, 34 Unchecked, 1.2s Time] [2022-01-31 13:37:59,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-31 13:37:59,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-31 13:37:59,424 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) [2022-01-31 13:37:59,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-31 13:37:59,424 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 75 [2022-01-31 13:37:59,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 13:37:59,424 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-31 13:37:59,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 22 states have internal predecessors, (46), 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) [2022-01-31 13:37:59,424 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-31 13:37:59,424 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-31 13:37:59,427 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 13:37:59,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-31 13:37:59,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 13:37:59,643 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2022-01-31 13:37:59,644 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 13:37:59,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 01:37:59 BasicIcfg [2022-01-31 13:37:59,647 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 13:37:59,648 INFO L158 Benchmark]: Toolchain (without parser) took 53661.44ms. Allocated memory was 178.3MB in the beginning and 237.0MB in the end (delta: 58.7MB). Free memory was 127.5MB in the beginning and 180.7MB in the end (delta: -53.2MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2022-01-31 13:37:59,648 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 178.3MB. Free memory is still 143.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 13:37:59,648 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.98ms. Allocated memory was 178.3MB in the beginning and 237.0MB in the end (delta: 58.7MB). Free memory was 127.1MB in the beginning and 211.1MB in the end (delta: -83.9MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. [2022-01-31 13:37:59,649 INFO L158 Benchmark]: Boogie Preprocessor took 36.34ms. Allocated memory is still 237.0MB. Free memory was 211.1MB in the beginning and 209.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 13:37:59,649 INFO L158 Benchmark]: RCFGBuilder took 271.78ms. Allocated memory is still 237.0MB. Free memory was 209.5MB in the beginning and 197.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-31 13:37:59,649 INFO L158 Benchmark]: IcfgTransformer took 17.79ms. Allocated memory is still 237.0MB. Free memory was 197.2MB in the beginning and 195.9MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 13:37:59,649 INFO L158 Benchmark]: TraceAbstraction took 53070.60ms. Allocated memory is still 237.0MB. Free memory was 195.4MB in the beginning and 180.7MB in the end (delta: 14.7MB). Peak memory consumption was 15.5MB. Max. memory is 8.0GB. [2022-01-31 13:37:59,652 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 178.3MB. Free memory is still 143.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 251.98ms. Allocated memory was 178.3MB in the beginning and 237.0MB in the end (delta: 58.7MB). Free memory was 127.1MB in the beginning and 211.1MB in the end (delta: -83.9MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.34ms. Allocated memory is still 237.0MB. Free memory was 211.1MB in the beginning and 209.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 271.78ms. Allocated memory is still 237.0MB. Free memory was 209.5MB in the beginning and 197.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * IcfgTransformer took 17.79ms. Allocated memory is still 237.0MB. Free memory was 197.2MB in the beginning and 195.9MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 53070.60ms. Allocated memory is still 237.0MB. Free memory was 195.4MB in the beginning and 180.7MB in the end (delta: 14.7MB). Peak memory consumption was 15.5MB. 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: 53.0s, OverallIterations: 8, TraceHistogramMax: 7, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 16.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 194 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 184 mSDsluCounter, 1157 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 85 IncrementalHoareTripleChecker+Unchecked, 963 mSDsCounter, 124 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 942 IncrementalHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 124 mSolverCounterUnsat, 194 mSDtfsCounter, 942 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 672 GetRequests, 523 SyntacticMatches, 7 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 31.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=7, InterpolantAutomatonStates: 104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 23 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 34.3s InterpolantComputationTime, 356 NumberOfCodeBlocks, 320 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 621 ConstructedInterpolants, 6 QuantifiedInterpolants, 3639 SizeOfPredicates, 39 NumberOfNonLiveVariables, 884 ConjunctsInSsa, 143 ConjunctsInUnsatCore, 13 InterpolantComputations, 2 PerfectInterpolantSequences, 637/746 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! [2022-01-31 13:37:59,840 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...