/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/loop-industry-pattern/aiob_4.c.v+lh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-14 20:59:18,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-14 20:59:18,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-14 20:59:18,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-14 20:59:18,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-14 20:59:18,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-14 20:59:18,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-14 20:59:18,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-14 20:59:18,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-14 20:59:18,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-14 20:59:18,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-14 20:59:18,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-14 20:59:18,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-14 20:59:18,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-14 20:59:18,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-14 20:59:18,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-14 20:59:18,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-14 20:59:18,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-14 20:59:18,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-14 20:59:18,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-14 20:59:18,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-14 20:59:18,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-14 20:59:18,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-14 20:59:18,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-14 20:59:18,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-14 20:59:18,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-14 20:59:18,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-14 20:59:18,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-14 20:59:18,303 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-14 20:59:18,312 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-14 20:59:18,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-14 20:59:18,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-14 20:59:18,313 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-14 20:59:18,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-14 20:59:18,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-14 20:59:18,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-14 20:59:18,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-14 20:59:18,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-14 20:59:18,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-14 20:59:18,314 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-14 20:59:18,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-14 20:59:18,314 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-14 20:59:18,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-14 20:59:18,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-14 20:59:18,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-14 20:59:18,315 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-14 20:59:18,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-14 20:59:18,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 20:59:18,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-14 20:59:18,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-14 20:59:18,315 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-14 20:59:18,315 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-14 20:59:18,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-14 20:59:18,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-14 20:59:18,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-14 20:59:18,493 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-14 20:59:18,495 INFO L275 PluginConnector]: CDTParser initialized [2022-02-14 20:59:18,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2022-02-14 20:59:18,539 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa73a4712/8f9573e40c884eb9b226cbd5eaf64fbd/FLAGe9df586b1 [2022-02-14 20:59:18,862 INFO L306 CDTParser]: Found 1 translation units. [2022-02-14 20:59:18,862 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2022-02-14 20:59:18,870 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa73a4712/8f9573e40c884eb9b226cbd5eaf64fbd/FLAGe9df586b1 [2022-02-14 20:59:18,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa73a4712/8f9573e40c884eb9b226cbd5eaf64fbd [2022-02-14 20:59:18,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-14 20:59:18,881 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-14 20:59:18,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-14 20:59:18,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-14 20:59:18,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-14 20:59:18,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 08:59:18" (1/1) ... [2022-02-14 20:59:18,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74bbfd09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:59:18, skipping insertion in model container [2022-02-14 20:59:18,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 08:59:18" (1/1) ... [2022-02-14 20:59:18,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-14 20:59:18,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-14 20:59:19,075 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2022-02-14 20:59:19,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 20:59:19,083 INFO L203 MainTranslator]: Completed pre-run [2022-02-14 20:59:19,117 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2022-02-14 20:59:19,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 20:59:19,136 INFO L208 MainTranslator]: Completed translation [2022-02-14 20:59:19,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:59:19 WrapperNode [2022-02-14 20:59:19,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-14 20:59:19,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-14 20:59:19,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-14 20:59:19,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-14 20:59:19,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:59:19" (1/1) ... [2022-02-14 20:59:19,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:59:19" (1/1) ... [2022-02-14 20:59:19,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:59:19" (1/1) ... [2022-02-14 20:59:19,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:59:19" (1/1) ... [2022-02-14 20:59:19,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:59:19" (1/1) ... [2022-02-14 20:59:19,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:59:19" (1/1) ... [2022-02-14 20:59:19,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:59:19" (1/1) ... [2022-02-14 20:59:19,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-14 20:59:19,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-14 20:59:19,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-14 20:59:19,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-14 20:59:19,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:59:19" (1/1) ... [2022-02-14 20:59:19,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 20:59:19,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 20:59:19,235 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) [2022-02-14 20:59:19,254 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 [2022-02-14 20:59:19,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-14 20:59:19,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-14 20:59:19,269 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-14 20:59:19,269 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-14 20:59:19,269 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-14 20:59:19,269 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-14 20:59:19,269 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-14 20:59:19,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-14 20:59:19,269 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2022-02-14 20:59:19,270 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2022-02-14 20:59:19,270 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-14 20:59:19,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-14 20:59:19,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-14 20:59:19,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-14 20:59:19,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-02-14 20:59:19,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-14 20:59:19,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-14 20:59:19,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-14 20:59:19,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-14 20:59:19,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-02-14 20:59:19,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-14 20:59:19,395 INFO L234 CfgBuilder]: Building ICFG [2022-02-14 20:59:19,396 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-14 20:59:19,807 INFO L275 CfgBuilder]: Performing block encoding [2022-02-14 20:59:19,811 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-14 20:59:19,812 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-14 20:59:19,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 08:59:19 BoogieIcfgContainer [2022-02-14 20:59:19,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-14 20:59:19,814 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-14 20:59:19,814 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-14 20:59:19,815 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-14 20:59:19,817 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 08:59:19" (1/1) ... [2022-02-14 20:59:19,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 08:59:19 BasicIcfg [2022-02-14 20:59:19,835 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-14 20:59:19,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-14 20:59:19,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-14 20:59:19,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-14 20:59:19,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 08:59:18" (1/4) ... [2022-02-14 20:59:19,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636d956f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 08:59:19, skipping insertion in model container [2022-02-14 20:59:19,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:59:19" (2/4) ... [2022-02-14 20:59:19,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636d956f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 08:59:19, skipping insertion in model container [2022-02-14 20:59:19,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 08:59:19" (3/4) ... [2022-02-14 20:59:19,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636d956f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 08:59:19, skipping insertion in model container [2022-02-14 20:59:19,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 08:59:19" (4/4) ... [2022-02-14 20:59:19,842 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.cJordan [2022-02-14 20:59:19,846 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-14 20:59:19,846 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-14 20:59:19,920 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-14 20:59:19,926 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-14 20:59:19,926 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-14 20:59:19,940 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-14 20:59:19,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-14 20:59:19,944 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:59:19,945 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:59:19,945 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:59:19,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:59:19,949 INFO L85 PathProgramCache]: Analyzing trace with hash -29084800, now seen corresponding path program 1 times [2022-02-14 20:59:19,954 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:59:19,955 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730943938] [2022-02-14 20:59:19,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:59:19,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:59:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:59:20,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:59:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:59:20,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:59:20,179 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:59:20,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730943938] [2022-02-14 20:59:20,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730943938] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 20:59:20,180 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 20:59:20,180 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-14 20:59:20,181 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32420460] [2022-02-14 20:59:20,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 20:59:20,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-14 20:59:20,184 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:59:20,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-14 20:59:20,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-14 20:59:20,202 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 20:59:20,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:59:20,270 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-02-14 20:59:20,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-14 20:59:20,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-02-14 20:59:20,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:59:20,276 INFO L225 Difference]: With dead ends: 31 [2022-02-14 20:59:20,276 INFO L226 Difference]: Without dead ends: 21 [2022-02-14 20:59:20,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-14 20:59:20,280 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 27 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 20:59:20,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 43 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 20:59:20,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-02-14 20:59:20,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2022-02-14 20:59:20,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 20:59:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-02-14 20:59:20,300 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 12 [2022-02-14 20:59:20,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:59:20,300 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-02-14 20:59:20,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 20:59:20,300 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-02-14 20:59:20,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-14 20:59:20,301 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:59:20,301 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:59:20,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-14 20:59:20,301 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:59:20,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:59:20,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1870263588, now seen corresponding path program 1 times [2022-02-14 20:59:20,302 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:59:20,302 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164235069] [2022-02-14 20:59:20,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:59:20,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:59:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:59:20,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:59:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:59:20,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:59:20,479 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:59:20,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164235069] [2022-02-14 20:59:20,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164235069] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 20:59:20,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566933743] [2022-02-14 20:59:20,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:59:20,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 20:59:20,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 20:59:20,482 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) [2022-02-14 20:59:20,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-14 20:59:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:59:20,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-14 20:59:20,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 20:59:20,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:59:20,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 20:59:20,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:59:20,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566933743] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 20:59:20,831 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-14 20:59:20,831 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-02-14 20:59:20,832 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658510394] [2022-02-14 20:59:20,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-14 20:59:20,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-14 20:59:20,833 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:59:20,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-14 20:59:20,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-14 20:59:20,835 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 20:59:21,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:59:21,013 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2022-02-14 20:59:21,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-14 20:59:21,014 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-02-14 20:59:21,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:59:21,014 INFO L225 Difference]: With dead ends: 35 [2022-02-14 20:59:21,014 INFO L226 Difference]: Without dead ends: 35 [2022-02-14 20:59:21,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-02-14 20:59:21,016 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 20:59:21,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 55 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 20:59:21,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-02-14 20:59:21,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2022-02-14 20:59:21,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 20:59:21,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2022-02-14 20:59:21,019 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 17 [2022-02-14 20:59:21,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:59:21,019 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2022-02-14 20:59:21,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 20:59:21,020 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2022-02-14 20:59:21,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-14 20:59:21,020 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:59:21,020 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:59:21,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-14 20:59:21,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 20:59:21,232 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:59:21,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:59:21,232 INFO L85 PathProgramCache]: Analyzing trace with hash -595409280, now seen corresponding path program 2 times [2022-02-14 20:59:21,232 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:59:21,233 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075031413] [2022-02-14 20:59:21,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:59:21,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:59:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:59:21,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:59:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:59:21,405 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:59:21,405 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:59:21,405 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075031413] [2022-02-14 20:59:21,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075031413] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 20:59:21,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20618625] [2022-02-14 20:59:21,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-14 20:59:21,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 20:59:21,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 20:59:21,410 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) [2022-02-14 20:59:21,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-14 20:59:21,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-14 20:59:21,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-14 20:59:21,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-14 20:59:21,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 20:59:21,687 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:59:21,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 20:59:21,816 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:59:21,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20618625] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 20:59:21,816 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-14 20:59:21,816 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2022-02-14 20:59:21,816 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371030784] [2022-02-14 20:59:21,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-14 20:59:21,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-14 20:59:21,817 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:59:21,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-14 20:59:21,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-02-14 20:59:21,818 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 20:59:22,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:59:22,382 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2022-02-14 20:59:22,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-14 20:59:22,383 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-02-14 20:59:22,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:59:22,384 INFO L225 Difference]: With dead ends: 65 [2022-02-14 20:59:22,384 INFO L226 Difference]: Without dead ends: 65 [2022-02-14 20:59:22,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=228, Invalid=642, Unknown=0, NotChecked=0, Total=870 [2022-02-14 20:59:22,385 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 72 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 20:59:22,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 92 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 20:59:22,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-02-14 20:59:22,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2022-02-14 20:59:22,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 59 states have (on average 1.0169491525423728) internal successors, (60), 59 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 20:59:22,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2022-02-14 20:59:22,389 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 32 [2022-02-14 20:59:22,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:59:22,389 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2022-02-14 20:59:22,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 20:59:22,390 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2022-02-14 20:59:22,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-14 20:59:22,391 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:59:22,391 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:59:22,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-14 20:59:22,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-02-14 20:59:22,603 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:59:22,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:59:22,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1106154240, now seen corresponding path program 3 times [2022-02-14 20:59:22,604 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:59:22,604 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184241301] [2022-02-14 20:59:22,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:59:22,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:59:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:59:22,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:59:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:59:22,821 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:59:22,821 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:59:22,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184241301] [2022-02-14 20:59:22,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184241301] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 20:59:22,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118007620] [2022-02-14 20:59:22,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-14 20:59:22,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 20:59:22,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 20:59:22,836 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) [2022-02-14 20:59:22,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-14 20:59:23,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-14 20:59:23,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-14 20:59:23,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-14 20:59:23,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 20:59:23,265 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-14 20:59:23,265 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23