/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/prodbin-ll_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 08:03:47,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 08:03:47,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 08:03:47,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-06 08:03:47,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 08:03:47,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 08:03:47,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 08:03:47,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 08:03:47,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 08:03:47,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 08:03:47,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 08:03:47,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 08:03:47,288 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 08:03:47,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 08:03:47,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 08:03:47,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 08:03:47,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 08:03:47,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-06 08:03:47,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 08:03:47,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 08:03:47,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 08:03:47,304 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-06 08:03:47,314 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 08:03:47,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 08:03:47,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 08:03:47,315 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 08:03:47,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 08:03:47,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 08:03:47,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 08:03:47,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 08:03:47,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 08:03:47,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 08:03:47,316 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 08:03:47,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 08:03:47,316 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 08:03:47,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 08:03:47,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 08:03:47,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 08:03:47,316 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 08:03:47,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 08:03:47,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 08:03:47,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 08:03:47,317 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 08:03:47,317 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 08:03:47,317 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 08:03:47,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 08:03:47,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 08:03:47,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 08:03:47,474 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 08:03:47,474 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 08:03:47,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_unwindbound10.c [2022-04-06 08:03:47,529 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7f873c74/9818ef0efe434f3fa289eadd71b58cf0/FLAG49bee0a87 [2022-04-06 08:03:47,871 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 08:03:47,871 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_unwindbound10.c [2022-04-06 08:03:47,875 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7f873c74/9818ef0efe434f3fa289eadd71b58cf0/FLAG49bee0a87 [2022-04-06 08:03:47,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7f873c74/9818ef0efe434f3fa289eadd71b58cf0 [2022-04-06 08:03:47,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 08:03:47,885 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 08:03:47,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 08:03:47,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 08:03:47,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 08:03:47,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 08:03:47" (1/1) ... [2022-04-06 08:03:47,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bb23611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:03:47, skipping insertion in model container [2022-04-06 08:03:47,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 08:03:47" (1/1) ... [2022-04-06 08:03:47,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 08:03:47,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 08:03:48,001 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/prodbin-ll_unwindbound10.c[537,550] [2022-04-06 08:03:48,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 08:03:48,035 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 08:03:48,043 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/prodbin-ll_unwindbound10.c[537,550] [2022-04-06 08:03:48,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 08:03:48,055 INFO L208 MainTranslator]: Completed translation [2022-04-06 08:03:48,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:03:48 WrapperNode [2022-04-06 08:03:48,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 08:03:48,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 08:03:48,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 08:03:48,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 08:03:48,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:03:48" (1/1) ... [2022-04-06 08:03:48,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:03:48" (1/1) ... [2022-04-06 08:03:48,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:03:48" (1/1) ... [2022-04-06 08:03:48,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:03:48" (1/1) ... [2022-04-06 08:03:48,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:03:48" (1/1) ... [2022-04-06 08:03:48,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:03:48" (1/1) ... [2022-04-06 08:03:48,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:03:48" (1/1) ... [2022-04-06 08:03:48,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 08:03:48,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 08:03:48,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 08:03:48,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 08:03:48,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:03:48" (1/1) ... [2022-04-06 08:03:48,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 08:03:48,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 08:03:48,111 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-06 08:03:48,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-06 08:03:48,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 08:03:48,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 08:03:48,138 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 08:03:48,138 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-06 08:03:48,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 08:03:48,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 08:03:48,138 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 08:03:48,138 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 08:03:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 08:03:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 08:03:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 08:03:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-06 08:03:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 08:03:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 08:03:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 08:03:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 08:03:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 08:03:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 08:03:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 08:03:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 08:03:48,178 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 08:03:48,179 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 08:03:48,248 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 08:03:48,252 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 08:03:48,253 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 08:03:48,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 08:03:48 BoogieIcfgContainer [2022-04-06 08:03:48,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 08:03:48,254 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 08:03:48,254 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 08:03:48,261 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 08:03:48,263 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 08:03:48" (1/1) ... [2022-04-06 08:03:48,265 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-06 08:03:48,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 08:03:48 BasicIcfg [2022-04-06 08:03:48,275 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 08:03:48,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 08:03:48,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 08:03:48,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 08:03:48,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 08:03:47" (1/4) ... [2022-04-06 08:03:48,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73971df5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 08:03:48, skipping insertion in model container [2022-04-06 08:03:48,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:03:48" (2/4) ... [2022-04-06 08:03:48,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73971df5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 08:03:48, skipping insertion in model container [2022-04-06 08:03:48,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 08:03:48" (3/4) ... [2022-04-06 08:03:48,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73971df5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 08:03:48, skipping insertion in model container [2022-04-06 08:03:48,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 08:03:48" (4/4) ... [2022-04-06 08:03:48,296 INFO L111 eAbstractionObserver]: Analyzing ICFG prodbin-ll_unwindbound10.cJordan [2022-04-06 08:03:48,299 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-06 08:03:48,299 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 08:03:48,354 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 08:03:48,358 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-06 08:03:48,358 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 08:03:48,380 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-06 08:03:48,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-06 08:03:48,387 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:03:48,388 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:03:48,389 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:03:48,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:03:48,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1957529129, now seen corresponding path program 1 times [2022-04-06 08:03:48,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:03:48,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847130863] [2022-04-06 08:03:48,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:03:48,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:03:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:03:48,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:03:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:03:48,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:03:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:03:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:03:48,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:03:48,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847130863] [2022-04-06 08:03:48,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847130863] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:03:48,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:03:48,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 08:03:48,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172541545] [2022-04-06 08:03:48,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:03:48,588 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 08:03:48,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:03:48,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 08:03:48,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 08:03:48,618 INFO L87 Difference]: Start difference. First operand has 30 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-06 08:03:48,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:03:48,672 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-04-06 08:03:48,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 08:03:48,674 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, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-04-06 08:03:48,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:03:48,687 INFO L225 Difference]: With dead ends: 31 [2022-04-06 08:03:48,687 INFO L226 Difference]: Without dead ends: 26 [2022-04-06 08:03:48,689 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 08:03:48,692 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:03:48,693 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 35 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:03:48,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-04-06 08:03:48,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-04-06 08:03:48,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-06 08:03:48,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-04-06 08:03:48,722 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2022-04-06 08:03:48,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:03:48,722 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-04-06 08:03:48,723 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, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-06 08:03:48,723 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-04-06 08:03:48,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-06 08:03:48,723 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:03:48,723 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:03:48,724 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 08:03:48,724 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:03:48,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:03:48,724 INFO L85 PathProgramCache]: Analyzing trace with hash 583261658, now seen corresponding path program 1 times [2022-04-06 08:03:48,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:03:48,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101886125] [2022-04-06 08:03:48,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:03:48,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:03:48,737 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 08:03:48,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [821661935] [2022-04-06 08:03:48,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:03:48,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:03:48,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 08:03:48,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 08:03:48,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 08:03:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:03:48,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-06 08:03:48,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 08:03:48,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:03:48,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 08:03:48,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:03:48,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101886125] [2022-04-06 08:03:48,904 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 08:03:48,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821661935] [2022-04-06 08:03:48,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821661935] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:03:48,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:03:48,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:03:48,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57224963] [2022-04-06 08:03:48,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:03:48,908 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:03:48,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:03:48,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:03:48,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:03:48,909 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-06 08:03:48,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:03:48,921 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-04-06 08:03:48,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:03:48,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-04-06 08:03:48,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:03:48,924 INFO L225 Difference]: With dead ends: 27 [2022-04-06 08:03:48,924 INFO L226 Difference]: Without dead ends: 27 [2022-04-06 08:03:48,925 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:03:48,925 INFO L913 BasicCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:03:48,926 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:03:48,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-04-06 08:03:48,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-04-06 08:03:48,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-06 08:03:48,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-04-06 08:03:48,929 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 18 [2022-04-06 08:03:48,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:03:48,929 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-04-06 08:03:48,930 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-06 08:03:48,930 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-04-06 08:03:48,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-06 08:03:48,930 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:03:48,930 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:03:48,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-06 08:03:49,134 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:03:49,134 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:03:49,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:03:49,135 INFO L85 PathProgramCache]: Analyzing trace with hash 584363925, now seen corresponding path program 1 times [2022-04-06 08:03:49,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:03:49,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863301505] [2022-04-06 08:03:49,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:03:49,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:03:49,145 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 08:03:49,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092564170] [2022-04-06 08:03:49,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:03:49,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:03:49,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 08:03:49,146 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 08:03:49,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 08:03:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:03:49,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-06 08:03:49,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 08:03:49,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:03:49,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 08:03:49,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:03:49,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863301505] [2022-04-06 08:03:49,284 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 08:03:49,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092564170] [2022-04-06 08:03:49,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092564170] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:03:49,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:03:49,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 08:03:49,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225752333] [2022-04-06 08:03:49,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:03:49,285 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 08:03:49,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:03:49,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 08:03:49,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:03:49,285 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-06 08:03:49,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:03:49,318 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-04-06 08:03:49,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 08:03:49,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-04-06 08:03:49,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:03:49,319 INFO L225 Difference]: With dead ends: 36 [2022-04-06 08:03:49,319 INFO L226 Difference]: Without dead ends: 36 [2022-04-06 08:03:49,320 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-06 08:03:49,320 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 8 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:03:49,321 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 78 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:03:49,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-04-06 08:03:49,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2022-04-06 08:03:49,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-06 08:03:49,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-04-06 08:03:49,335 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 18 [2022-04-06 08:03:49,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:03:49,337 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-04-06 08:03:49,337 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-06 08:03:49,337 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-04-06 08:03:49,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-04-06 08:03:49,338 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:03:49,338 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:03:49,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-06 08:03:49,538 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-06 08:03:49,539 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:03:49,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:03:49,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1698322804, now seen corresponding path program 1 times [2022-04-06 08:03:49,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:03:49,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764884863] [2022-04-06 08:03:49,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:03:49,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:03:49,553 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 08:03:49,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [612266238] [2022-04-06 08:03:49,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:03:49,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:03:49,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 08:03:49,560 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 08:03:49,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 08:03:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:03:49,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 08:03:49,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 08:03:49,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:03:49,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 08:03:49,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:03:49,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764884863] [2022-04-06 08:03:49,648 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 08:03:49,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612266238] [2022-04-06 08:03:49,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612266238] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:03:49,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:03:49,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 08:03:49,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400951123] [2022-04-06 08:03:49,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:03:49,649 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 08:03:49,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:03:49,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 08:03:49,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 08:03:49,650 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-06 08:03:49,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:03:49,683 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-04-06 08:03:49,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 08:03:49,684 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-04-06 08:03:49,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:03:49,684 INFO L225 Difference]: With dead ends: 35 [2022-04-06 08:03:49,684 INFO L226 Difference]: Without dead ends: 35 [2022-04-06 08:03:49,685 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-06 08:03:49,685 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 17 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:03:49,685 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 88 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:03:49,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-04-06 08:03:49,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2022-04-06 08:03:49,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-06 08:03:49,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-04-06 08:03:49,688 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 24 [2022-04-06 08:03:49,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:03:49,688 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-04-06 08:03:49,688 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-06 08:03:49,688 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-04-06 08:03:49,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-06 08:03:49,689 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:03:49,689 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:03:49,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-04-06 08:03:49,915 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:03:49,915 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:03:49,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:03:49,916 INFO L85 PathProgramCache]: Analyzing trace with hash 919545147, now seen corresponding path program 1 times [2022-04-06 08:03:49,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:03:49,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964978295] [2022-04-06 08:03:49,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:03:49,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:03:49,928 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 08:03:49,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1368642211] [2022-04-06 08:03:49,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:03:49,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:03:49,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 08:03:49,930 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 08:03:49,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-06 08:03:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:03:49,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 08:03:49,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 08:03:50,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:03:50,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 08:03:50,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:03:50,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:03:50,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964978295] [2022-04-06 08:03:50,111 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 08:03:50,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368642211] [2022-04-06 08:03:50,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368642211] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 08:03:50,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 08:03:50,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-04-06 08:03:50,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737016667] [2022-04-06 08:03:50,112 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 08:03:50,112 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 08:03:50,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:03:50,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 08:03:50,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-04-06 08:03:50,113 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-04-06 08:03:50,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:03:50,170 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2022-04-06 08:03:50,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 08:03:50,170 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 28 [2022-04-06 08:03:50,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:03:50,174 INFO L225 Difference]: With dead ends: 63 [2022-04-06 08:03:50,174 INFO L226 Difference]: Without dead ends: 63 [2022-04-06 08:03:50,174 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-04-06 08:03:50,175 INFO L913 BasicCegarLoop]: 29 mSDtfsCounter, 52 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:03:50,175 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 99 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:03:50,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-04-06 08:03:50,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2022-04-06 08:03:50,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 45 states have internal predecessors, (53), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-06 08:03:50,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2022-04-06 08:03:50,181 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 28 [2022-04-06 08:03:50,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:03:50,181 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2022-04-06 08:03:50,182 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-04-06 08:03:50,182 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2022-04-06 08:03:50,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-06 08:03:50,182 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:03:50,182 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:03:50,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-04-06 08:03:50,400 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:03:50,400 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:03:50,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:03:50,401 INFO L85 PathProgramCache]: Analyzing trace with hash 920647414, now seen corresponding path program 1 times [2022-04-06 08:03:50,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:03:50,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580273950] [2022-04-06 08:03:50,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:03:50,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:03:50,420 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 08:03:50,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [61288301] [2022-04-06 08:03:50,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:03:50,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:03:50,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 08:03:50,422 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 08:03:50,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-06 08:03:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:03:50,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 28 conjunts are in the unsatisfiable core [2022-04-06 08:03:50,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 08:03:51,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:03:51,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 08:04:02,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:04:02,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:04:02,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580273950] [2022-04-06 08:04:02,529 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 08:04:02,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61288301] [2022-04-06 08:04:02,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61288301] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 08:04:02,529 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 08:04:02,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2022-04-06 08:04:02,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335242826] [2022-04-06 08:04:02,530 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 08:04:02,530 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 08:04:02,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:04:02,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 08:04:02,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=142, Unknown=1, NotChecked=0, Total=182 [2022-04-06 08:04:02,531 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-06 08:04:04,557 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 08:04:05,966 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 08:04:08,627 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 08:04:08,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:04:08,899 INFO L93 Difference]: Finished difference Result 88 states and 99 transitions. [2022-04-06 08:04:08,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 08:04:08,900 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2022-04-06 08:04:08,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:04:08,902 INFO L225 Difference]: With dead ends: 88 [2022-04-06 08:04:08,902 INFO L226 Difference]: Without dead ends: 88 [2022-04-06 08:04:08,902 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=63, Invalid=242, Unknown=1, NotChecked=0, Total=306 [2022-04-06 08:04:08,903 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 32 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:04:08,903 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 145 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 138 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2022-04-06 08:04:08,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-04-06 08:04:08,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2022-04-06 08:04:08,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 69 states have internal predecessors, (75), 13 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (9), 6 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-06 08:04:08,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions. [2022-04-06 08:04:08,910 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 28 [2022-04-06 08:04:08,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:04:08,910 INFO L478 AbstractCegarLoop]: Abstraction has 86 states and 97 transitions. [2022-04-06 08:04:08,910 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-06 08:04:08,910 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions. [2022-04-06 08:04:08,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-06 08:04:08,911 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:04:08,911 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:04:08,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-06 08:04:09,118 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:04:09,118 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:04:09,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:04:09,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1631509547, now seen corresponding path program 1 times [2022-04-06 08:04:09,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:04:09,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897310015] [2022-04-06 08:04:09,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:04:09,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:04:09,130 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 08:04:09,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2003262924] [2022-04-06 08:04:09,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:04:09,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:04:09,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 08:04:09,132 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 08:04:09,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-06 08:04:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:04:09,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 26 conjunts are in the unsatisfiable core [2022-04-06 08:04:09,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 08:04:10,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:04:10,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 08:04:10,698 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:04:10,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:04:10,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897310015] [2022-04-06 08:04:10,699 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 08:04:10,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003262924] [2022-04-06 08:04:10,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003262924] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 08:04:10,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 08:04:10,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2022-04-06 08:04:10,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054719559] [2022-04-06 08:04:10,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 08:04:10,701 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-06 08:04:10,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:04:10,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-06 08:04:10,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2022-04-06 08:04:10,701 INFO L87 Difference]: Start difference. First operand 86 states and 97 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 17 states have internal predecessors, (32), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-06 08:04:11,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:04:11,451 INFO L93 Difference]: Finished difference Result 112 states and 125 transitions. [2022-04-06 08:04:11,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 08:04:11,452 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 17 states have internal predecessors, (32), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 28 [2022-04-06 08:04:11,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:04:11,452 INFO L225 Difference]: With dead ends: 112 [2022-04-06 08:04:11,452 INFO L226 Difference]: Without dead ends: 110 [2022-04-06 08:04:11,453 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2022-04-06 08:04:11,453 INFO L913 BasicCegarLoop]: 19 mSDtfsCounter, 49 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 08:04:11,453 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 157 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 08:04:11,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-04-06 08:04:11,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 100. [2022-04-06 08:04:11,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 79 states have internal predecessors, (89), 14 states have call successors, (14), 12 states have call predecessors, (14), 10 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-06 08:04:11,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2022-04-06 08:04:11,460 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 28 [2022-04-06 08:04:11,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:04:11,461 INFO L478 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2022-04-06 08:04:11,461 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 17 states have internal predecessors, (32), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-06 08:04:11,461 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2022-04-06 08:04:11,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-04-06 08:04:11,462 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:04:11,462 INFO L499 BasicCegarLoop]: trace histogram [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, 1] [2022-04-06 08:04:11,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-06 08:04:11,682 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:04:11,682 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:04:11,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:04:11,683 INFO L85 PathProgramCache]: Analyzing trace with hash -357510123, now seen corresponding path program 1 times [2022-04-06 08:04:11,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:04:11,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518813160] [2022-04-06 08:04:11,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:04:11,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:04:11,691 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 08:04:11,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907080254] [2022-04-06 08:04:11,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:04:11,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:04:11,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 08:04:11,698 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 08:04:11,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-06 08:04:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:04:11,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-06 08:04:11,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 08:04:11,827 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 08:04:11,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 08:04:11,914 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 08:04:11,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:04:11,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518813160] [2022-04-06 08:04:11,915 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 08:04:11,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907080254] [2022-04-06 08:04:11,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907080254] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 08:04:11,915 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 08:04:11,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-04-06 08:04:11,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585411730] [2022-04-06 08:04:11,915 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 08:04:11,916 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 08:04:11,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:04:11,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 08:04:11,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-06 08:04:11,917 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 08:04:13,921 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 08:04:13,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:04:13,966 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2022-04-06 08:04:13,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 08:04:13,966 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2022-04-06 08:04:13,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:04:13,967 INFO L225 Difference]: With dead ends: 110 [2022-04-06 08:04:13,967 INFO L226 Difference]: Without dead ends: 97 [2022-04-06 08:04:13,967 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-04-06 08:04:13,968 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 22 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:04:13,968 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 92 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2022-04-06 08:04:13,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-04-06 08:04:13,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2022-04-06 08:04:13,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 76 states have internal predecessors, (83), 12 states have call successors, (12), 11 states have call predecessors, (12), 10 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-06 08:04:13,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2022-04-06 08:04:13,974 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 34 [2022-04-06 08:04:13,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:04:13,974 INFO L478 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2022-04-06 08:04:13,974 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 08:04:13,975 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2022-04-06 08:04:13,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-06 08:04:13,975 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:04:13,975 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:04:14,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-06 08:04:14,187 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:04:14,188 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:04:14,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:04:14,188 INFO L85 PathProgramCache]: Analyzing trace with hash 960980470, now seen corresponding path program 1 times [2022-04-06 08:04:14,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:04:14,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30493636] [2022-04-06 08:04:14,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:04:14,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:04:14,194 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 08:04:14,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1718354998] [2022-04-06 08:04:14,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:04:14,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:04:14,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 08:04:14,196 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 08:04:14,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-06 08:04:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:04:14,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-06 08:04:14,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 08:04:18,782 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 08:04:18,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 08:04:19,704 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 08:04:19,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:04:19,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30493636] [2022-04-06 08:04:19,704 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 08:04:19,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718354998] [2022-04-06 08:04:19,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718354998] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 08:04:19,704 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 08:04:19,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 19 [2022-04-06 08:04:19,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418019468] [2022-04-06 08:04:19,705 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 08:04:19,705 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 08:04:19,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:04:19,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 08:04:19,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-04-06 08:04:19,706 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-04-06 08:04:21,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:04:21,137 INFO L93 Difference]: Finished difference Result 122 states and 134 transitions. [2022-04-06 08:04:21,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-06 08:04:21,137 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 38 [2022-04-06 08:04:21,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:04:21,138 INFO L225 Difference]: With dead ends: 122 [2022-04-06 08:04:21,138 INFO L226 Difference]: Without dead ends: 122 [2022-04-06 08:04:21,138 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2022-04-06 08:04:21,139 INFO L913 BasicCegarLoop]: 25 mSDtfsCounter, 44 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 08:04:21,139 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 203 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 244 Invalid, 0 Unknown, 25 Unchecked, 0.6s Time] [2022-04-06 08:04:21,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-04-06 08:04:21,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2022-04-06 08:04:21,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 92 states have (on average 1.1304347826086956) internal successors, (104), 96 states have internal predecessors, (104), 15 states have call successors, (15), 13 states have call predecessors, (15), 12 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2022-04-06 08:04:21,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2022-04-06 08:04:21,144 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 38 [2022-04-06 08:04:21,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:04:21,145 INFO L478 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2022-04-06 08:04:21,145 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-04-06 08:04:21,145 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2022-04-06 08:04:21,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-06 08:04:21,146 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:04:21,146 INFO L499 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:04:21,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-06 08:04:21,362 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-04-06 08:04:21,362 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:04:21,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:04:21,363 INFO L85 PathProgramCache]: Analyzing trace with hash -831185954, now seen corresponding path program 2 times [2022-04-06 08:04:21,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:04:21,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552542405] [2022-04-06 08:04:21,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:04:21,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:04:21,369 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 08:04:21,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1459472901] [2022-04-06 08:04:21,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 08:04:21,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:04:21,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 08:04:21,371 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 08:04:21,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-06 08:04:21,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 08:04:21,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 08:04:21,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-06 08:04:21,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 08:04:21,531 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:04:21,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 08:04:21,661 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 08:04:21,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:04:21,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552542405] [2022-04-06 08:04:21,661 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 08:04:21,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459472901] [2022-04-06 08:04:21,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459472901] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 08:04:21,662 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 08:04:21,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-04-06 08:04:21,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114474072] [2022-04-06 08:04:21,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 08:04:21,662 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 08:04:21,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:04:21,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 08:04:21,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-04-06 08:04:21,663 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 12 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2022-04-06 08:04:21,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:04:21,771 INFO L93 Difference]: Finished difference Result 293 states and 317 transitions. [2022-04-06 08:04:21,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-04-06 08:04:21,771 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 12 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) Word has length 58 [2022-04-06 08:04:21,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:04:21,772 INFO L225 Difference]: With dead ends: 293 [2022-04-06 08:04:21,772 INFO L226 Difference]: Without dead ends: 293 [2022-04-06 08:04:21,773 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2022-04-06 08:04:21,773 INFO L913 BasicCegarLoop]: 34 mSDtfsCounter, 128 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:04:21,773 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 156 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 08:04:21,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-04-06 08:04:21,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 283. [2022-04-06 08:04:21,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 221 states have (on average 1.1312217194570136) internal successors, (250), 230 states have internal predecessors, (250), 32 states have call successors, (32), 30 states have call predecessors, (32), 29 states have return successors, (30), 22 states have call predecessors, (30), 30 states have call successors, (30) [2022-04-06 08:04:21,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 312 transitions. [2022-04-06 08:04:21,784 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 312 transitions. Word has length 58 [2022-04-06 08:04:21,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:04:21,784 INFO L478 AbstractCegarLoop]: Abstraction has 283 states and 312 transitions. [2022-04-06 08:04:21,784 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 12 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2022-04-06 08:04:21,784 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 312 transitions. [2022-04-06 08:04:21,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-06 08:04:21,785 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:04:21,785 INFO L499 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:04:21,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-04-06 08:04:21,999 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-04-06 08:04:22,000 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:04:22,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:04:22,000 INFO L85 PathProgramCache]: Analyzing trace with hash -84345705, now seen corresponding path program 2 times [2022-04-06 08:04:22,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:04:22,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258253745] [2022-04-06 08:04:22,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:04:22,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:04:22,006 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 08:04:22,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [946307985] [2022-04-06 08:04:22,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 08:04:22,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:04:22,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 08:04:22,008 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 08:04:22,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-06 08:04:22,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 08:04:22,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 08:04:22,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 60 conjunts are in the unsatisfiable core [2022-04-06 08:04:22,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 08:05:40,214 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 11 proven. 54 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-04-06 08:05:40,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 08:06:02,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:06:02,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258253745] [2022-04-06 08:06:02,407 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 08:06:02,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946307985] [2022-04-06 08:06:02,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946307985] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 08:06:02,407 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-06 08:06:02,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-04-06 08:06:02,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916868550] [2022-04-06 08:06:02,408 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-06 08:06:02,408 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-06 08:06:02,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:06:02,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-06 08:06:02,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=571, Unknown=5, NotChecked=0, Total=702 [2022-04-06 08:06:02,409 INFO L87 Difference]: Start difference. First operand 283 states and 312 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 18 states have internal predecessors, (38), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-04-06 08:06:04,616 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 08:06:07,845 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 08:06:13,138 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 08:06:14,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:06:14,089 INFO L93 Difference]: Finished difference Result 314 states and 346 transitions. [2022-04-06 08:06:14,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 08:06:14,090 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 18 states have internal predecessors, (38), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 58 [2022-04-06 08:06:14,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:06:14,092 INFO L225 Difference]: With dead ends: 314 [2022-04-06 08:06:14,092 INFO L226 Difference]: Without dead ends: 314 [2022-04-06 08:06:14,092 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=143, Invalid=722, Unknown=5, NotChecked=0, Total=870 [2022-04-06 08:06:14,093 INFO L913 BasicCegarLoop]: 28 mSDtfsCounter, 42 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-04-06 08:06:14,093 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 221 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2022-04-06 08:06:14,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-04-06 08:06:14,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 293. [2022-04-06 08:06:14,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 229 states have (on average 1.1310043668122272) internal successors, (259), 238 states have internal predecessors, (259), 33 states have call successors, (33), 31 states have call predecessors, (33), 30 states have return successors, (31), 23 states have call predecessors, (31), 31 states have call successors, (31) [2022-04-06 08:06:14,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 323 transitions. [2022-04-06 08:06:14,101 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 323 transitions. Word has length 58 [2022-04-06 08:06:14,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:06:14,101 INFO L478 AbstractCegarLoop]: Abstraction has 293 states and 323 transitions. [2022-04-06 08:06:14,101 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 18 states have internal predecessors, (38), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-04-06 08:06:14,101 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 323 transitions. [2022-04-06 08:06:14,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-06 08:06:14,102 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:06:14,102 INFO L499 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:06:14,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-04-06 08:06:14,319 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-04-06 08:06:14,319 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:06:14,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:06:14,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1548458294, now seen corresponding path program 3 times [2022-04-06 08:06:14,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:06:14,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042325705] [2022-04-06 08:06:14,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:06:14,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:06:14,325 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 08:06:14,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [198569066] [2022-04-06 08:06:14,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-06 08:06:14,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:06:14,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 08:06:14,342 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 08:06:14,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-04-06 08:06:14,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-04-06 08:06:14,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 08:06:14,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 22 conjunts are in the unsatisfiable core [2022-04-06 08:06:14,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 08:06:17,132 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 08:06:19,293 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-04-06 08:06:19,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 08:06:19,816 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 46 proven. 14 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-04-06 08:06:19,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:06:19,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042325705] [2022-04-06 08:06:19,816 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 08:06:19,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198569066] [2022-04-06 08:06:19,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198569066] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 08:06:19,816 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 08:06:19,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-04-06 08:06:19,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959356469] [2022-04-06 08:06:19,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 08:06:19,817 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 08:06:19,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:06:19,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 08:06:19,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-04-06 08:06:19,817 INFO L87 Difference]: Start difference. First operand 293 states and 323 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 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) [2022-04-06 08:06:22,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:06:22,895 INFO L93 Difference]: Finished difference Result 364 states and 403 transitions. [2022-04-06 08:06:22,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 08:06:22,896 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 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 58 [2022-04-06 08:06:22,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:06:22,897 INFO L225 Difference]: With dead ends: 364 [2022-04-06 08:06:22,897 INFO L226 Difference]: Without dead ends: 364 [2022-04-06 08:06:22,898 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 98 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2022-04-06 08:06:22,898 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 34 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 08:06:22,898 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 197 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 168 Invalid, 0 Unknown, 26 Unchecked, 0.4s Time] [2022-04-06 08:06:22,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-04-06 08:06:22,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 210. [2022-04-06 08:06:22,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 165 states have (on average 1.1636363636363636) internal successors, (192), 166 states have internal predecessors, (192), 23 states have call successors, (23), 22 states have call predecessors, (23), 21 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-04-06 08:06:22,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 236 transitions. [2022-04-06 08:06:22,904 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 236 transitions. Word has length 58 [2022-04-06 08:06:22,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:06:22,904 INFO L478 AbstractCegarLoop]: Abstraction has 210 states and 236 transitions. [2022-04-06 08:06:22,904 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 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) [2022-04-06 08:06:22,904 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 236 transitions. [2022-04-06 08:06:22,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-06 08:06:22,905 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:06:22,905 INFO L499 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:06:22,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-04-06 08:06:23,105 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-04-06 08:06:23,105 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:06:23,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:06:23,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1293721749, now seen corresponding path program 2 times [2022-04-06 08:06:23,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:06:23,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298040016] [2022-04-06 08:06:23,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:06:23,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:06:23,112 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 08:06:23,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1431852274] [2022-04-06 08:06:23,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 08:06:23,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:06:23,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 08:06:23,135 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 08:06:23,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-04-06 08:06:23,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 08:06:23,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 08:06:23,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 43 conjunts are in the unsatisfiable core [2022-04-06 08:06:23,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 08:07:03,393 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-04-06 08:07:03,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 08:07:09,429 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 08:07:16,623 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-04-06 08:07:16,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:07:16,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298040016] [2022-04-06 08:07:16,623 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 08:07:16,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431852274] [2022-04-06 08:07:16,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431852274] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 08:07:16,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 08:07:16,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 30 [2022-04-06 08:07:16,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851791483] [2022-04-06 08:07:16,624 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 08:07:16,624 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-04-06 08:07:16,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:07:16,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-04-06 08:07:16,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=713, Unknown=0, NotChecked=0, Total=870 [2022-04-06 08:07:16,625 INFO L87 Difference]: Start difference. First operand 210 states and 236 transitions. Second operand has 30 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 27 states have internal predecessors, (65), 11 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 9 states have call successors, (11) [2022-04-06 08:07:29,741 WARN L232 SmtUtils]: Spent 8.97s on a formula simplification. DAG size of input: 169 DAG size of output: 56 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-06 08:07:31,756 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 08:07:33,809 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 08:07:35,814 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 08:08:06,899 WARN L232 SmtUtils]: Spent 15.28s on a formula simplification. DAG size of input: 175 DAG size of output: 43 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-06 08:08:09,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 08:08:11,292 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 08:08:11,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:08:11,626 INFO L93 Difference]: Finished difference Result 397 states and 464 transitions. [2022-04-06 08:08:11,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-04-06 08:08:11,626 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 27 states have internal predecessors, (65), 11 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 9 states have call successors, (11) Word has length 58 [2022-04-06 08:08:11,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:08:11,628 INFO L225 Difference]: With dead ends: 397 [2022-04-06 08:08:11,628 INFO L226 Difference]: Without dead ends: 397 [2022-04-06 08:08:11,628 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 44.8s TimeCoverageRelationStatistics Valid=366, Invalid=1439, Unknown=1, NotChecked=0, Total=1806 [2022-04-06 08:08:11,628 INFO L913 BasicCegarLoop]: 28 mSDtfsCounter, 113 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 107 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2022-04-06 08:08:11,628 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 309 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 592 Invalid, 5 Unknown, 0 Unchecked, 14.7s Time] [2022-04-06 08:08:11,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-04-06 08:08:11,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 215. [2022-04-06 08:08:11,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 168 states have (on average 1.130952380952381) internal successors, (190), 170 states have internal predecessors, (190), 24 states have call successors, (24), 23 states have call predecessors, (24), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-04-06 08:08:11,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 236 transitions. [2022-04-06 08:08:11,635 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 236 transitions. Word has length 58 [2022-04-06 08:08:11,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:08:11,635 INFO L478 AbstractCegarLoop]: Abstraction has 215 states and 236 transitions. [2022-04-06 08:08:11,635 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 27 states have internal predecessors, (65), 11 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 9 states have call successors, (11) [2022-04-06 08:08:11,635 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 236 transitions. [2022-04-06 08:08:11,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-04-06 08:08:11,636 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:08:11,636 INFO L499 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:08:11,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-04-06 08:08:11,851 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-04-06 08:08:11,851 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:08:11,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:08:11,852 INFO L85 PathProgramCache]: Analyzing trace with hash -2092549276, now seen corresponding path program 3 times [2022-04-06 08:08:11,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:08:11,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778050665] [2022-04-06 08:08:11,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:08:11,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:08:11,859 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 08:08:11,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1973155682] [2022-04-06 08:08:11,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-06 08:08:11,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:08:11,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 08:08:11,864 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 08:08:11,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-04-06 08:08:12,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-04-06 08:08:12,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-04-06 08:08:12,091 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 08:08:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 08:08:12,262 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 08:08:12,262 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-06 08:08:12,262 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 08:08:12,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-04-06 08:08:12,483 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-04-06 08:08:12,486 INFO L719 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1, 1] [2022-04-06 08:08:12,488 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 08:08:12,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 08:08:12 BasicIcfg [2022-04-06 08:08:12,529 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 08:08:12,530 INFO L158 Benchmark]: Toolchain (without parser) took 264644.18ms. Allocated memory was 174.1MB in the beginning and 229.6MB in the end (delta: 55.6MB). Free memory was 127.8MB in the beginning and 177.2MB in the end (delta: -49.4MB). Peak memory consumption was 7.7MB. Max. memory is 8.0GB. [2022-04-06 08:08:12,530 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 174.1MB. Free memory is still 143.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 08:08:12,530 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.08ms. Allocated memory is still 174.1MB. Free memory was 127.7MB in the beginning and 152.5MB in the end (delta: -24.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-06 08:08:12,531 INFO L158 Benchmark]: Boogie Preprocessor took 25.22ms. Allocated memory is still 174.1MB. Free memory was 152.5MB in the beginning and 151.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 08:08:12,531 INFO L158 Benchmark]: RCFGBuilder took 172.20ms. Allocated memory is still 174.1MB. Free memory was 151.1MB in the beginning and 141.1MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-06 08:08:12,531 INFO L158 Benchmark]: IcfgTransformer took 20.71ms. Allocated memory is still 174.1MB. Free memory was 141.1MB in the beginning and 139.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 08:08:12,531 INFO L158 Benchmark]: TraceAbstraction took 264237.09ms. Allocated memory was 174.1MB in the beginning and 229.6MB in the end (delta: 55.6MB). Free memory was 139.0MB in the beginning and 177.2MB in the end (delta: -38.2MB). Peak memory consumption was 18.3MB. Max. memory is 8.0GB. [2022-04-06 08:08:12,532 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 174.1MB. Free memory is still 143.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 167.08ms. Allocated memory is still 174.1MB. Free memory was 127.7MB in the beginning and 152.5MB in the end (delta: -24.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.22ms. Allocated memory is still 174.1MB. Free memory was 152.5MB in the beginning and 151.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 172.20ms. Allocated memory is still 174.1MB. Free memory was 151.1MB in the beginning and 141.1MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 20.71ms. Allocated memory is still 174.1MB. Free memory was 141.1MB in the beginning and 139.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 264237.09ms. Allocated memory was 174.1MB in the beginning and 229.6MB in the end (delta: 55.6MB). Free memory was 139.0MB in the beginning and 177.2MB in the end (delta: -38.2MB). Peak memory consumption was 18.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20] int counter = 0; VAL [\old(counter)=15, counter=0] [L22] int a, b; [L23] long long x, y, z; [L25] a = __VERIFIER_nondet_int() [L26] b = __VERIFIER_nondet_int() [L27] CALL assume_abort_if_not(b >= 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L10] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L27] RET assume_abort_if_not(b >= 1) VAL [\old(counter)=0, a=1023, b=1046527, counter=0] [L29] x = a [L30] y = b [L31] z = 0 VAL [\old(counter)=0, a=1023, b=1046527, counter=0, x=1023, y=1046527, z=0] [L33] EXPR counter++ VAL [\old(counter)=0, a=1023, b=1046527, counter=1, counter++=0, x=1023, y=1046527, z=0] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L13] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L34] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=1023, b=1046527, counter=1, x=1023, y=1046527, z=0] [L35] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=1023, b=1046527, counter=1, x=1023, y=1046527, z=0] [L38] COND TRUE y % 2 == 1 [L39] z = z + x [L40] y = y - 1 VAL [\old(counter)=0, a=1023, b=1046527, counter=1, x=1023, y=1046526, z=1023] [L42] x = 2 * x [L43] y = y / 2 VAL [\old(counter)=0, a=1023, b=1046527, counter=1, x=2046, y=523263, z=1023] [L33] EXPR counter++ VAL [\old(counter)=0, a=1023, b=1046527, counter=2, counter++=1, x=2046, y=523263, z=1023] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L13] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L34] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=1023, b=1046527, counter=2, x=2046, y=523263, z=1023] [L35] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=1023, b=1046527, counter=2, x=2046, y=523263, z=1023] [L38] COND TRUE y % 2 == 1 [L39] z = z + x [L40] y = y - 1 VAL [\old(counter)=0, a=1023, b=1046527, counter=2, x=2046, y=523262, z=3069] [L42] x = 2 * x [L43] y = y / 2 VAL [\old(counter)=0, a=1023, b=1046527, counter=2, x=4092, y=261631, z=3069] [L33] EXPR counter++ VAL [\old(counter)=0, a=1023, b=1046527, counter=3, counter++=2, x=4092, y=261631, z=3069] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L13] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L34] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=1023, b=1046527, counter=3, x=4092, y=261631, z=3069] [L35] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=1023, b=1046527, counter=3, x=4092, y=261631, z=3069] [L38] COND TRUE y % 2 == 1 [L39] z = z + x [L40] y = y - 1 VAL [\old(counter)=0, a=1023, b=1046527, counter=3, x=4092, y=261630, z=7161] [L42] x = 2 * x [L43] y = y / 2 VAL [\old(counter)=0, a=1023, b=1046527, counter=3, x=8184, y=130815, z=7161] [L33] EXPR counter++ VAL [\old(counter)=0, a=1023, b=1046527, counter=4, counter++=3, x=8184, y=130815, z=7161] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L13] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L34] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=1023, b=1046527, counter=4, x=8184, y=130815, z=7161] [L35] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=1023, b=1046527, counter=4, x=8184, y=130815, z=7161] [L38] COND TRUE y % 2 == 1 [L39] z = z + x [L40] y = y - 1 VAL [\old(counter)=0, a=1023, b=1046527, counter=4, x=8184, y=130814, z=15345] [L42] x = 2 * x [L43] y = y / 2 VAL [\old(counter)=0, a=1023, b=1046527, counter=4, x=16368, y=65407, z=15345] [L33] EXPR counter++ VAL [\old(counter)=0, a=1023, b=1046527, counter=5, counter++=4, x=16368, y=65407, z=15345] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L13] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L34] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=1023, b=1046527, counter=5, x=16368, y=65407, z=15345] [L35] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=1023, b=1046527, counter=5, x=16368, y=65407, z=15345] [L38] COND TRUE y % 2 == 1 [L39] z = z + x [L40] y = y - 1 VAL [\old(counter)=0, a=1023, b=1046527, counter=5, x=16368, y=65406, z=31713] [L42] x = 2 * x [L43] y = y / 2 VAL [\old(counter)=0, a=1023, b=1046527, counter=5, x=32736, y=32703, z=31713] [L33] EXPR counter++ VAL [\old(counter)=0, a=1023, b=1046527, counter=6, counter++=5, x=32736, y=32703, z=31713] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=6] [L13] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=6] [L34] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=1023, b=1046527, counter=6, x=32736, y=32703, z=31713] [L35] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=1023, b=1046527, counter=6, x=32736, y=32703, z=31713] [L38] COND TRUE y % 2 == 1 [L39] z = z + x [L40] y = y - 1 VAL [\old(counter)=0, a=1023, b=1046527, counter=6, x=32736, y=32702, z=64449] [L42] x = 2 * x [L43] y = y / 2 VAL [\old(counter)=0, a=1023, b=1046527, counter=6, x=65472, y=16351, z=64449] [L33] EXPR counter++ VAL [\old(counter)=0, a=1023, b=1046527, counter=7, counter++=6, x=65472, y=16351, z=64449] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L13] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L34] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=1023, b=1046527, counter=7, x=65472, y=16351, z=64449] [L35] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=1023, b=1046527, counter=7, x=65472, y=16351, z=64449] [L38] COND TRUE y % 2 == 1 [L39] z = z + x [L40] y = y - 1 VAL [\old(counter)=0, a=1023, b=1046527, counter=7, x=65472, y=16350, z=129921] [L42] x = 2 * x [L43] y = y / 2 VAL [\old(counter)=0, a=1023, b=1046527, counter=7, x=130944, y=8175, z=129921] [L33] EXPR counter++ VAL [\old(counter)=0, a=1023, b=1046527, counter=8, counter++=7, x=130944, y=8175, z=129921] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L13] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L34] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=1023, b=1046527, counter=8, x=130944, y=8175, z=129921] [L35] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=1023, b=1046527, counter=8, x=130944, y=8175, z=129921] [L38] COND TRUE y % 2 == 1 [L39] z = z + x [L40] y = y - 1 VAL [\old(counter)=0, a=1023, b=1046527, counter=8, x=130944, y=8174, z=260865] [L42] x = 2 * x [L43] y = y / 2 VAL [\old(counter)=0, a=1023, b=1046527, counter=8, x=261888, y=4087, z=260865] [L33] EXPR counter++ VAL [\old(counter)=0, a=1023, b=1046527, counter=9, counter++=8, x=261888, y=4087, z=260865] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=9] [L13] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=9] [L34] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=1023, b=1046527, counter=9, x=261888, y=4087, z=260865] [L35] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=1023, b=1046527, counter=9, x=261888, y=4087, z=260865] [L38] COND TRUE y % 2 == 1 [L39] z = z + x [L40] y = y - 1 VAL [\old(counter)=0, a=1023, b=1046527, counter=9, x=261888, y=4086, z=522753] [L42] x = 2 * x [L43] y = y / 2 VAL [\old(counter)=0, a=1023, b=1046527, counter=9, x=523776, y=2043, z=522753] [L33] EXPR counter++ VAL [\old(counter)=0, a=1023, b=1046527, counter=10, counter++=9, x=523776, y=2043, z=522753] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L13] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L34] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=1023, b=1046527, counter=10, x=523776, y=2043, z=522753] [L35] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=1023, b=1046527, counter=10, x=523776, y=2043, z=522753] [L38] COND TRUE y % 2 == 1 [L39] z = z + x [L40] y = y - 1 VAL [\old(counter)=0, a=1023, b=1046527, counter=10, x=523776, y=2042, z=1046529] [L42] x = 2 * x [L43] y = y / 2 VAL [\old(counter)=0, a=1023, b=1046527, counter=10, x=1047552, y=1021, z=1046529] [L33] EXPR counter++ VAL [\old(counter)=0, a=1023, b=1046527, counter=11, counter++=10, x=1047552, y=1021, z=1046529] [L33] COND FALSE !(counter++<10) [L45] CALL __VERIFIER_assert(z == (long long) a * b) VAL [\old(cond)=0, \old(counter)=0, counter=11] [L13] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=11] [L15] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 264.1s, OverallIterations: 14, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 80.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 8 mSolverCounterUnknown, 564 SdHoareTripleChecker+Valid, 35.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 551 mSDsluCounter, 1846 SdHoareTripleChecker+Invalid, 35.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 51 IncrementalHoareTripleChecker+Unchecked, 1510 mSDsCounter, 293 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2093 IncrementalHoareTripleChecker+Invalid, 2445 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 293 mSolverCounterUnsat, 336 mSDtfsCounter, 2093 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 860 GetRequests, 630 SyntacticMatches, 18 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1171 ImplicationChecksByTransitivity, 85.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=293occurred in iteration=11, InterpolantAutomatonStates: 165, 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, 13 MinimizatonAttempts, 393 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 179.2s InterpolantComputationTime, 583 NumberOfCodeBlocks, 573 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 774 ConstructedInterpolants, 2 QuantifiedInterpolants, 8798 SizeOfPredicates, 41 NumberOfNonLiveVariables, 1505 ConjunctsInSsa, 263 ConjunctsInUnsatCore, 21 InterpolantComputations, 4 PerfectInterpolantSequences, 316/646 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-04-06 08:08:12,608 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...