/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/ps6-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 04:07:32,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 04:07:32,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 04:07:32,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-05 04:07:32,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 04:07:32,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 04:07:32,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 04:07:32,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 04:07:32,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 04:07:32,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 04:07:32,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 04:07:32,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 04:07:32,288 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 04:07:32,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 04:07:32,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 04:07:32,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 04:07:32,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 04:07:32,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-05 04:07:32,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 04:07:32,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 04:07:32,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 04:07:32,309 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-05 04:07:32,316 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 04:07:32,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 04:07:32,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 04:07:32,317 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-05 04:07:32,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 04:07:32,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-05 04:07:32,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 04:07:32,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 04:07:32,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 04:07:32,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 04:07:32,318 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-05 04:07:32,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 04:07:32,318 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 04:07:32,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 04:07:32,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 04:07:32,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 04:07:32,319 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-05 04:07:32,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 04:07:32,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 04:07:32,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 04:07:32,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 04:07:32,320 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 04:07:32,320 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 04:07:32,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 04:07:32,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 04:07:32,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 04:07:32,489 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 04:07:32,490 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 04:07:32,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_valuebound2.c [2022-04-05 04:07:32,536 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/535cec72c/85aaee746d03416c8d5312636857959f/FLAG8c146bf1f [2022-04-05 04:07:32,883 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 04:07:32,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_valuebound2.c [2022-04-05 04:07:32,887 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/535cec72c/85aaee746d03416c8d5312636857959f/FLAG8c146bf1f [2022-04-05 04:07:32,896 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/535cec72c/85aaee746d03416c8d5312636857959f [2022-04-05 04:07:32,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 04:07:32,900 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 04:07:32,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 04:07:32,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 04:07:32,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 04:07:32,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 04:07:32" (1/1) ... [2022-04-05 04:07:32,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec7dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:07:32, skipping insertion in model container [2022-04-05 04:07:32,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 04:07:32" (1/1) ... [2022-04-05 04:07:32,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 04:07:32,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 04:07:33,033 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/ps6-ll_valuebound2.c[458,471] [2022-04-05 04:07:33,044 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 04:07:33,049 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 04:07:33,057 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/ps6-ll_valuebound2.c[458,471] [2022-04-05 04:07:33,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 04:07:33,070 INFO L208 MainTranslator]: Completed translation [2022-04-05 04:07:33,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:07:33 WrapperNode [2022-04-05 04:07:33,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 04:07:33,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 04:07:33,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 04:07:33,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 04:07:33,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:07:33" (1/1) ... [2022-04-05 04:07:33,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:07:33" (1/1) ... [2022-04-05 04:07:33,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:07:33" (1/1) ... [2022-04-05 04:07:33,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:07:33" (1/1) ... [2022-04-05 04:07:33,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:07:33" (1/1) ... [2022-04-05 04:07:33,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:07:33" (1/1) ... [2022-04-05 04:07:33,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:07:33" (1/1) ... [2022-04-05 04:07:33,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 04:07:33,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 04:07:33,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 04:07:33,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 04:07:33,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:07:33" (1/1) ... [2022-04-05 04:07:33,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 04:07:33,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 04:07:33,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-05 04:07:33,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 04:07:33,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 04:07:33,169 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 04:07:33,169 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-05 04:07:33,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 04:07:33,169 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 04:07:33,170 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 04:07:33,170 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 04:07:33,170 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 04:07:33,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 04:07:33,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-04-05 04:07:33,170 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-05 04:07:33,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 04:07:33,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 04:07:33,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 04:07:33,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-05 04:07:33,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 04:07:33,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 04:07:33,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 04:07:33,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 04:07:33,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 04:07:33,219 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 04:07:33,220 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 04:07:33,350 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 04:07:33,354 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 04:07:33,354 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-05 04:07:33,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 04:07:33 BoogieIcfgContainer [2022-04-05 04:07:33,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 04:07:33,356 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 04:07:33,356 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 04:07:33,357 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 04:07:33,358 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 04:07:33" (1/1) ... [2022-04-05 04:07:33,360 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-05 04:07:33,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 04:07:33 BasicIcfg [2022-04-05 04:07:33,369 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 04:07:33,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 04:07:33,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 04:07:33,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 04:07:33,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 04:07:32" (1/4) ... [2022-04-05 04:07:33,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da88735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 04:07:33, skipping insertion in model container [2022-04-05 04:07:33,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:07:33" (2/4) ... [2022-04-05 04:07:33,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da88735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 04:07:33, skipping insertion in model container [2022-04-05 04:07:33,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 04:07:33" (3/4) ... [2022-04-05 04:07:33,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da88735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 04:07:33, skipping insertion in model container [2022-04-05 04:07:33,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 04:07:33" (4/4) ... [2022-04-05 04:07:33,379 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound2.cJordan [2022-04-05 04:07:33,382 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-05 04:07:33,382 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 04:07:33,408 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 04:07:33,414 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-05 04:07:33,414 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 04:07:33,426 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-05 04:07:33,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-05 04:07:33,432 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:07:33,433 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 04:07:33,433 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:07:33,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:07:33,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1187991702, now seen corresponding path program 1 times [2022-04-05 04:07:33,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:07:33,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076290263] [2022-04-05 04:07:33,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:07:33,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:07:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:07:33,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 04:07:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:07:33,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 04:07:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:07:33,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-05 04:07:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:07:33,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 04:07:33,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:07:33,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076290263] [2022-04-05 04:07:33,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076290263] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:07:33,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:07:33,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-05 04:07:33,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517816280] [2022-04-05 04:07:33,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:07:33,595 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-05 04:07:33,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:07:33,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-05 04:07:33,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 04:07:33,619 INFO L87 Difference]: Start difference. First operand has 29 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-05 04:07:33,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:07:33,670 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-04-05 04:07:33,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-05 04:07:33,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-04-05 04:07:33,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:07:33,677 INFO L225 Difference]: With dead ends: 29 [2022-04-05 04:07:33,677 INFO L226 Difference]: Without dead ends: 24 [2022-04-05 04:07:33,678 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 04:07:33,681 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 04:07:33,681 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 30 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 04:07:33,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-04-05 04:07:33,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-04-05 04:07:33,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-05 04:07:33,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-04-05 04:07:33,704 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 22 [2022-04-05 04:07:33,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:07:33,704 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-04-05 04:07:33,705 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-05 04:07:33,705 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-04-05 04:07:33,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-05 04:07:33,706 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:07:33,706 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 04:07:33,706 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 04:07:33,706 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:07:33,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:07:33,707 INFO L85 PathProgramCache]: Analyzing trace with hash 793962506, now seen corresponding path program 1 times [2022-04-05 04:07:33,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:07:33,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983803738] [2022-04-05 04:07:33,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:07:33,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:07:33,720 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 04:07:33,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [269398730] [2022-04-05 04:07:33,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:07:33,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:07:33,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 04:07:33,722 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 04:07:33,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-05 04:07:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:07:33,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-05 04:07:33,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 04:07:33,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 04:07:33,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 04:07:33,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:07:33,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983803738] [2022-04-05 04:07:33,912 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 04:07:33,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269398730] [2022-04-05 04:07:33,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269398730] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:07:33,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:07:33,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 04:07:33,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132253098] [2022-04-05 04:07:33,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:07:33,914 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 04:07:33,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:07:33,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 04:07:33,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-05 04:07:33,915 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 04:07:33,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:07:33,961 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2022-04-05 04:07:33,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 04:07:33,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 22 [2022-04-05 04:07:33,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:07:33,963 INFO L225 Difference]: With dead ends: 33 [2022-04-05 04:07:33,963 INFO L226 Difference]: Without dead ends: 31 [2022-04-05 04:07:33,963 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-05 04:07:33,964 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 04:07:33,964 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 85 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 04:07:33,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-04-05 04:07:33,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-04-05 04:07:33,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-05 04:07:33,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-04-05 04:07:33,969 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 22 [2022-04-05 04:07:33,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:07:33,970 INFO L478 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-04-05 04:07:33,970 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 04:07:33,970 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-04-05 04:07:33,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-05 04:07:33,970 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:07:33,971 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 04:07:33,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-05 04:07:34,176 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:07:34,177 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:07:34,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:07:34,179 INFO L85 PathProgramCache]: Analyzing trace with hash -503871754, now seen corresponding path program 1 times [2022-04-05 04:07:34,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:07:34,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531515939] [2022-04-05 04:07:34,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:07:34,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:07:34,192 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 04:07:34,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1207138205] [2022-04-05 04:07:34,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:07:34,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:07:34,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 04:07:34,196 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 04:07:34,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-05 04:07:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:07:34,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-05 04:07:34,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 04:07:34,361 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 04:07:34,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 04:07:40,715 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-04-05 04:07:40,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:07:40,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531515939] [2022-04-05 04:07:40,716 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 04:07:40,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207138205] [2022-04-05 04:07:40,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207138205] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-05 04:07:40,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-05 04:07:40,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-04-05 04:07:40,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893540316] [2022-04-05 04:07:40,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:07:40,717 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 04:07:40,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:07:40,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 04:07:40,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2022-04-05 04:07:40,718 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-05 04:07:40,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:07:40,759 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-04-05 04:07:40,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 04:07:40,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-04-05 04:07:40,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:07:40,762 INFO L225 Difference]: With dead ends: 35 [2022-04-05 04:07:40,762 INFO L226 Difference]: Without dead ends: 33 [2022-04-05 04:07:40,763 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=17, Invalid=37, Unknown=2, NotChecked=0, Total=56 [2022-04-05 04:07:40,765 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 04:07:40,767 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 75 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 04:07:40,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-04-05 04:07:40,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-04-05 04:07:40,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-05 04:07:40,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-04-05 04:07:40,775 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 29 [2022-04-05 04:07:40,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:07:40,775 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-04-05 04:07:40,775 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-05 04:07:40,776 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-04-05 04:07:40,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-04-05 04:07:40,777 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:07:40,777 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 04:07:40,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-05 04:07:40,977 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-05 04:07:40,978 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:07:40,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:07:40,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1285656823, now seen corresponding path program 1 times [2022-04-05 04:07:40,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:07:40,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544775243] [2022-04-05 04:07:40,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:07:40,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:07:41,003 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 04:07:41,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630350008] [2022-04-05 04:07:41,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:07:41,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:07:41,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 04:07:41,006 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 04:07:41,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-05 04:07:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:07:41,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-05 04:07:41,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 04:07:41,210 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-04-05 04:07:41,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 04:07:41,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:07:41,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544775243] [2022-04-05 04:07:41,399 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 04:07:41,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630350008] [2022-04-05 04:07:41,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630350008] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 04:07:41,399 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-05 04:07:41,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-04-05 04:07:41,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641318569] [2022-04-05 04:07:41,400 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-05 04:07:41,400 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-05 04:07:41,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:07:41,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-05 04:07:41,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-05 04:07:41,401 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-04-05 04:07:41,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:07:41,471 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-04-05 04:07:41,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 04:07:41,472 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 40 [2022-04-05 04:07:41,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:07:41,473 INFO L225 Difference]: With dead ends: 40 [2022-04-05 04:07:41,473 INFO L226 Difference]: Without dead ends: 36 [2022-04-05 04:07:41,473 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-04-05 04:07:41,473 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 2 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 04:07:41,474 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 135 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 04:07:41,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-04-05 04:07:41,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-04-05 04:07:41,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-05 04:07:41,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2022-04-05 04:07:41,477 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 40 [2022-04-05 04:07:41,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:07:41,477 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2022-04-05 04:07:41,477 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-04-05 04:07:41,477 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-04-05 04:07:41,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-05 04:07:41,478 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:07:41,478 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 04:07:41,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-05 04:07:41,679 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:07:41,679 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:07:41,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:07:41,680 INFO L85 PathProgramCache]: Analyzing trace with hash -542323485, now seen corresponding path program 2 times [2022-04-05 04:07:41,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:07:41,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22324639] [2022-04-05 04:07:41,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:07:41,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:07:41,692 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 04:07:41,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92370032] [2022-04-05 04:07:41,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 04:07:41,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:07:41,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 04:07:41,694 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 04:07:41,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-05 04:07:41,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 04:07:41,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 04:07:41,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2022-04-05 04:07:41,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 04:07:41,919 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-04-05 04:07:41,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 04:07:42,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:07:42,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22324639] [2022-04-05 04:07:42,156 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 04:07:42,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92370032] [2022-04-05 04:07:42,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92370032] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 04:07:42,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-05 04:07:42,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-04-05 04:07:42,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643027284] [2022-04-05 04:07:42,156 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-05 04:07:42,157 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 04:07:42,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:07:42,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 04:07:42,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-04-05 04:07:42,157 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-04-05 04:07:42,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:07:42,236 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-04-05 04:07:42,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 04:07:42,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 47 [2022-04-05 04:07:42,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:07:42,237 INFO L225 Difference]: With dead ends: 43 [2022-04-05 04:07:42,237 INFO L226 Difference]: Without dead ends: 39 [2022-04-05 04:07:42,237 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-04-05 04:07:42,238 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 2 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 04:07:42,238 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 166 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 04:07:42,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-04-05 04:07:42,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-04-05 04:07:42,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 10 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-05 04:07:42,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-04-05 04:07:42,242 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 47 [2022-04-05 04:07:42,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:07:42,242 INFO L478 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-04-05 04:07:42,242 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-04-05 04:07:42,242 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-04-05 04:07:42,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-05 04:07:42,243 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:07:42,243 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 04:07:42,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-05 04:07:42,447 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:07:42,447 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:07:42,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:07:42,448 INFO L85 PathProgramCache]: Analyzing trace with hash -2094100617, now seen corresponding path program 3 times [2022-04-05 04:07:42,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:07:42,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292226546] [2022-04-05 04:07:42,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:07:42,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:07:42,456 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 04:07:42,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1673657683] [2022-04-05 04:07:42,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 04:07:42,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:07:42,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 04:07:42,458 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 04:07:42,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-05 04:07:42,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-04-05 04:07:42,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 04:07:42,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-05 04:07:42,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 04:07:42,639 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 48 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-04-05 04:07:42,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 04:07:42,772 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-04-05 04:07:42,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:07:42,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292226546] [2022-04-05 04:07:42,772 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 04:07:42,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673657683] [2022-04-05 04:07:42,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673657683] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 04:07:42,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 04:07:42,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-04-05 04:07:42,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24326061] [2022-04-05 04:07:42,773 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 04:07:42,773 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-05 04:07:42,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:07:42,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-05 04:07:42,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-04-05 04:07:42,774 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 11 states have internal predecessors, (35), 10 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2022-04-05 04:07:42,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:07:42,813 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2022-04-05 04:07:42,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 04:07:42,814 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 11 states have internal predecessors, (35), 10 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) Word has length 54 [2022-04-05 04:07:42,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:07:42,814 INFO L225 Difference]: With dead ends: 32 [2022-04-05 04:07:42,814 INFO L226 Difference]: Without dead ends: 0 [2022-04-05 04:07:42,814 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-04-05 04:07:42,815 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 04:07:42,815 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 98 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 04:07:42,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-05 04:07:42,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-05 04:07:42,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-05 04:07:42,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-05 04:07:42,816 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2022-04-05 04:07:42,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:07:42,816 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-05 04:07:42,816 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 11 states have internal predecessors, (35), 10 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2022-04-05 04:07:42,816 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-05 04:07:42,816 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-05 04:07:42,818 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 04:07:42,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-05 04:07:43,018 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:07:43,021 INFO L719 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2022-04-05 04:07:43,022 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-05 04:07:43,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 04:07:43 BasicIcfg [2022-04-05 04:07:43,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-05 04:07:43,024 INFO L158 Benchmark]: Toolchain (without parser) took 10124.21ms. Allocated memory was 209.7MB in the beginning and 278.9MB in the end (delta: 69.2MB). Free memory was 151.9MB in the beginning and 152.4MB in the end (delta: -511.2kB). Peak memory consumption was 69.6MB. Max. memory is 8.0GB. [2022-04-05 04:07:43,024 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 209.7MB. Free memory is still 168.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 04:07:43,024 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.47ms. Allocated memory was 209.7MB in the beginning and 278.9MB in the end (delta: 69.2MB). Free memory was 151.7MB in the beginning and 248.9MB in the end (delta: -97.3MB). Peak memory consumption was 10.1MB. Max. memory is 8.0GB. [2022-04-05 04:07:43,024 INFO L158 Benchmark]: Boogie Preprocessor took 34.00ms. Allocated memory is still 278.9MB. Free memory was 248.9MB in the beginning and 247.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 04:07:43,024 INFO L158 Benchmark]: RCFGBuilder took 247.68ms. Allocated memory is still 278.9MB. Free memory was 247.5MB in the beginning and 237.5MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-05 04:07:43,025 INFO L158 Benchmark]: IcfgTransformer took 13.15ms. Allocated memory is still 278.9MB. Free memory was 237.5MB in the beginning and 236.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 04:07:43,025 INFO L158 Benchmark]: TraceAbstraction took 9653.44ms. Allocated memory is still 278.9MB. Free memory was 235.4MB in the beginning and 152.4MB in the end (delta: 83.0MB). Peak memory consumption was 83.5MB. Max. memory is 8.0GB. [2022-04-05 04:07:43,026 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 209.7MB. Free memory is still 168.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 169.47ms. Allocated memory was 209.7MB in the beginning and 278.9MB in the end (delta: 69.2MB). Free memory was 151.7MB in the beginning and 248.9MB in the end (delta: -97.3MB). Peak memory consumption was 10.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.00ms. Allocated memory is still 278.9MB. Free memory was 248.9MB in the beginning and 247.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 247.68ms. Allocated memory is still 278.9MB. Free memory was 247.5MB in the beginning and 237.5MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 13.15ms. Allocated memory is still 278.9MB. Free memory was 237.5MB in the beginning and 236.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 9653.44ms. Allocated memory is still 278.9MB. Free memory was 235.4MB in the beginning and 152.4MB in the end (delta: 83.0MB). Peak memory consumption was 83.5MB. 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: 12]: 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, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.6s, OverallIterations: 6, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 38 mSDsluCounter, 589 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 430 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 256 IncrementalHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 159 mSDtfsCounter, 256 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 323 GetRequests, 275 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=5, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 214 NumberOfCodeBlocks, 214 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 289 ConstructedInterpolants, 0 QuantifiedInterpolants, 852 SizeOfPredicates, 7 NumberOfNonLiveVariables, 561 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 218/238 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-04-05 04:07:43,040 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...