/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/ps4-ll_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 15:49:12,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 15:49:12,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 15:49:12,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 15:49:12,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 15:49:12,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 15:49:12,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 15:49:12,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 15:49:12,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 15:49:12,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 15:49:12,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 15:49:12,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 15:49:12,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 15:49:12,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 15:49:12,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 15:49:12,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 15:49:12,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 15:49:12,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 15:49:12,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 15:49:12,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 15:49:12,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 15:49:12,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 15:49:12,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 15:49:12,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 15:49:12,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 15:49:12,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 15:49:12,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 15:49:12,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 15:49:12,263 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 15:49:12,275 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 15:49:12,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 15:49:12,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 15:49:12,276 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 15:49:12,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 15:49:12,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 15:49:12,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 15:49:12,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 15:49:12,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 15:49:12,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 15:49:12,277 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 15:49:12,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 15:49:12,278 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 15:49:12,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 15:49:12,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 15:49:12,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 15:49:12,278 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 15:49:12,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 15:49:12,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 15:49:12,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 15:49:12,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 15:49:12,279 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 15:49:12,279 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 15:49:12,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 15:49:12,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 15:49:12,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 15:49:12,497 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 15:49:12,498 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 15:49:12,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps4-ll_unwindbound1.c [2022-01-31 15:49:12,540 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02dc58983/60eb4a3741474caaa42afe446e43041e/FLAG4c522c44a [2022-01-31 15:49:12,917 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 15:49:12,918 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps4-ll_unwindbound1.c [2022-01-31 15:49:12,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02dc58983/60eb4a3741474caaa42afe446e43041e/FLAG4c522c44a [2022-01-31 15:49:12,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02dc58983/60eb4a3741474caaa42afe446e43041e [2022-01-31 15:49:12,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 15:49:12,940 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 15:49:12,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 15:49:12,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 15:49:12,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 15:49:12,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 03:49:12" (1/1) ... [2022-01-31 15:49:12,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@541247d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:49:12, skipping insertion in model container [2022-01-31 15:49:12,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 03:49:12" (1/1) ... [2022-01-31 15:49:12,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 15:49:12,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 15:49:13,102 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/ps4-ll_unwindbound1.c[458,471] [2022-01-31 15:49:13,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 15:49:13,120 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 15:49:13,128 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/ps4-ll_unwindbound1.c[458,471] [2022-01-31 15:49:13,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 15:49:13,151 INFO L208 MainTranslator]: Completed translation [2022-01-31 15:49:13,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:49:13 WrapperNode [2022-01-31 15:49:13,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 15:49:13,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 15:49:13,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 15:49:13,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 15:49:13,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:49:13" (1/1) ... [2022-01-31 15:49:13,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:49:13" (1/1) ... [2022-01-31 15:49:13,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:49:13" (1/1) ... [2022-01-31 15:49:13,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:49:13" (1/1) ... [2022-01-31 15:49:13,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:49:13" (1/1) ... [2022-01-31 15:49:13,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:49:13" (1/1) ... [2022-01-31 15:49:13,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:49:13" (1/1) ... [2022-01-31 15:49:13,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 15:49:13,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 15:49:13,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 15:49:13,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 15:49:13,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:49:13" (1/1) ... [2022-01-31 15:49:13,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 15:49:13,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 15:49:13,203 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 15:49:13,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 15:49:13,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 15:49:13,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 15:49:13,233 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 15:49:13,233 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 15:49:13,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 15:49:13,234 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 15:49:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 15:49:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 15:49:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 15:49:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 15:49:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-01-31 15:49:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 15:49:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 15:49:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 15:49:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 15:49:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 15:49:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 15:49:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 15:49:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 15:49:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 15:49:13,283 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 15:49:13,284 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 15:49:13,414 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 15:49:13,418 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 15:49:13,418 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-31 15:49:13,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 03:49:13 BoogieIcfgContainer [2022-01-31 15:49:13,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 15:49:13,420 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 15:49:13,420 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 15:49:13,421 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 15:49:13,423 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 03:49:13" (1/1) ... [2022-01-31 15:49:13,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 03:49:13 BasicIcfg [2022-01-31 15:49:13,448 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 15:49:13,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 15:49:13,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 15:49:13,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 15:49:13,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 03:49:12" (1/4) ... [2022-01-31 15:49:13,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265d53be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 03:49:13, skipping insertion in model container [2022-01-31 15:49:13,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:49:13" (2/4) ... [2022-01-31 15:49:13,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265d53be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 03:49:13, skipping insertion in model container [2022-01-31 15:49:13,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 03:49:13" (3/4) ... [2022-01-31 15:49:13,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265d53be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 03:49:13, skipping insertion in model container [2022-01-31 15:49:13,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 03:49:13" (4/4) ... [2022-01-31 15:49:13,453 INFO L111 eAbstractionObserver]: Analyzing ICFG ps4-ll_unwindbound1.cJordan [2022-01-31 15:49:13,461 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 15:49:13,462 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 15:49:13,510 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 15:49:13,517 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 15:49:13,517 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 15:49:13,528 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 15:49:13,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-31 15:49:13,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 15:49:13,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 15:49:13,541 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 15:49:13,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 15:49:13,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1984627219, now seen corresponding path program 1 times [2022-01-31 15:49:13,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 15:49:13,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938137647] [2022-01-31 15:49:13,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 15:49:13,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 15:49:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 15:49:13,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 15:49:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 15:49:13,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 15:49:13,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 15:49:13,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938137647] [2022-01-31 15:49:13,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938137647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 15:49:13,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 15:49:13,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 15:49:13,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822126500] [2022-01-31 15:49:13,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 15:49:13,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 15:49:13,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 15:49:13,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 15:49:13,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 15:49:13,694 INFO L87 Difference]: Start difference. First operand has 23 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 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 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 15:49:13,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 15:49:13,734 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2022-01-31 15:49:13,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 15:49:13,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 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 11 [2022-01-31 15:49:13,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 15:49:13,740 INFO L225 Difference]: With dead ends: 24 [2022-01-31 15:49:13,740 INFO L226 Difference]: Without dead ends: 19 [2022-01-31 15:49:13,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 15:49:13,743 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 15:49:13,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 29 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 15:49:13,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-01-31 15:49:13,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2022-01-31 15:49:13,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 15:49:13,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-01-31 15:49:13,765 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 11 [2022-01-31 15:49:13,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 15:49:13,765 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-01-31 15:49:13,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 15:49:13,765 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-01-31 15:49:13,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-31 15:49:13,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 15:49:13,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 15:49:13,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 15:49:13,766 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 15:49:13,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 15:49:13,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1423332195, now seen corresponding path program 1 times [2022-01-31 15:49:13,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 15:49:13,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625960551] [2022-01-31 15:49:13,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 15:49:13,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 15:49:13,777 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 15:49:13,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1148369521] [2022-01-31 15:49:13,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 15:49:13,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 15:49:13,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 15:49:13,792 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 15:49:13,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 15:49:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 15:49:13,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-31 15:49:13,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 15:49:13,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 15:49:13,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 15:49:13,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 15:49:13,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625960551] [2022-01-31 15:49:13,931 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 15:49:13,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148369521] [2022-01-31 15:49:13,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148369521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 15:49:13,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 15:49:13,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 15:49:13,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111701654] [2022-01-31 15:49:13,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 15:49:13,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 15:49:13,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 15:49:13,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 15:49:13,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 15:49:13,934 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 15:49:13,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 15:49:13,949 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2022-01-31 15:49:13,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 15:49:13,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 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 12 [2022-01-31 15:49:13,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 15:49:13,950 INFO L225 Difference]: With dead ends: 20 [2022-01-31 15:49:13,950 INFO L226 Difference]: Without dead ends: 20 [2022-01-31 15:49:13,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 15:49:13,951 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 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 [2022-01-31 15:49:13,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 15:49:13,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-31 15:49:13,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-01-31 15:49:13,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 15:49:13,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-01-31 15:49:13,955 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2022-01-31 15:49:13,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 15:49:13,955 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-01-31 15:49:13,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 15:49:13,955 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-01-31 15:49:13,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-31 15:49:13,956 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 15:49:13,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 15:49:13,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 15:49:14,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 15:49:14,177 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 15:49:14,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 15:49:14,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1424404671, now seen corresponding path program 1 times [2022-01-31 15:49:14,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 15:49:14,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146081546] [2022-01-31 15:49:14,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 15:49:14,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 15:49:14,185 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 15:49:14,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1172549257] [2022-01-31 15:49:14,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 15:49:14,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 15:49:14,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 15:49:14,198 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 15:49:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 15:49:14,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 15:49:14,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-31 15:49:14,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 15:49:14,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 15:49:14,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 15:49:14,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 15:49:14,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146081546] [2022-01-31 15:49:14,284 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 15:49:14,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172549257] [2022-01-31 15:49:14,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172549257] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 15:49:14,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 15:49:14,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 15:49:14,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216649319] [2022-01-31 15:49:14,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 15:49:14,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 15:49:14,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 15:49:14,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 15:49:14,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 15:49:14,286 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 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) [2022-01-31 15:49:14,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 15:49:14,312 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2022-01-31 15:49:14,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 15:49:14,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 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 12 [2022-01-31 15:49:14,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 15:49:14,313 INFO L225 Difference]: With dead ends: 28 [2022-01-31 15:49:14,313 INFO L226 Difference]: Without dead ends: 26 [2022-01-31 15:49:14,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 15:49:14,315 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 15:49:14,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 71 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 15:49:14,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-31 15:49:14,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-01-31 15:49:14,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 15:49:14,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-01-31 15:49:14,319 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 12 [2022-01-31 15:49:14,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 15:49:14,319 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-01-31 15:49:14,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 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) [2022-01-31 15:49:14,320 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-01-31 15:49:14,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 15:49:14,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 15:49:14,320 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 15:49:14,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 15:49:14,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-31 15:49:14,536 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 15:49:14,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 15:49:14,537 INFO L85 PathProgramCache]: Analyzing trace with hash -381498108, now seen corresponding path program 1 times [2022-01-31 15:49:14,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 15:49:14,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366945037] [2022-01-31 15:49:14,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 15:49:14,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 15:49:14,555 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 15:49:14,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062674703] [2022-01-31 15:49:14,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 15:49:14,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 15:49:14,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 15:49:14,557 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 15:49:14,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-31 15:49:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 15:49:14,600 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 15:49:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 15:49:14,620 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-31 15:49:14,620 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 15:49:14,621 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 15:49:14,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-31 15:49:14,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 15:49:14,825 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-01-31 15:49:14,827 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 15:49:14,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 03:49:14 BasicIcfg [2022-01-31 15:49:14,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 15:49:14,844 INFO L158 Benchmark]: Toolchain (without parser) took 1904.40ms. Allocated memory is still 192.9MB. Free memory was 137.5MB in the beginning and 98.6MB in the end (delta: 38.9MB). Peak memory consumption was 38.0MB. Max. memory is 8.0GB. [2022-01-31 15:49:14,844 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 192.9MB. Free memory is still 154.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 15:49:14,845 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.68ms. Allocated memory is still 192.9MB. Free memory was 137.4MB in the beginning and 164.2MB in the end (delta: -26.8MB). Peak memory consumption was 8.6MB. Max. memory is 8.0GB. [2022-01-31 15:49:14,845 INFO L158 Benchmark]: Boogie Preprocessor took 28.38ms. Allocated memory is still 192.9MB. Free memory was 164.2MB in the beginning and 162.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 15:49:14,845 INFO L158 Benchmark]: RCFGBuilder took 237.87ms. Allocated memory is still 192.9MB. Free memory was 162.6MB in the beginning and 152.6MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-31 15:49:14,846 INFO L158 Benchmark]: IcfgTransformer took 28.53ms. Allocated memory is still 192.9MB. Free memory was 152.6MB in the beginning and 151.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 15:49:14,846 INFO L158 Benchmark]: TraceAbstraction took 1394.37ms. Allocated memory is still 192.9MB. Free memory was 150.5MB in the beginning and 98.6MB in the end (delta: 51.9MB). Peak memory consumption was 51.4MB. Max. memory is 8.0GB. [2022-01-31 15:49:14,847 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 192.9MB. Free memory is still 154.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 210.68ms. Allocated memory is still 192.9MB. Free memory was 137.4MB in the beginning and 164.2MB in the end (delta: -26.8MB). Peak memory consumption was 8.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.38ms. Allocated memory is still 192.9MB. Free memory was 164.2MB in the beginning and 162.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 237.87ms. Allocated memory is still 192.9MB. Free memory was 162.6MB in the beginning and 152.6MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 28.53ms. Allocated memory is still 192.9MB. Free memory was 152.6MB in the beginning and 151.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1394.37ms. Allocated memory is still 192.9MB. Free memory was 150.5MB in the beginning and 98.6MB in the end (delta: 51.9MB). Peak memory consumption was 51.4MB. 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: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int counter = 0; VAL [\old(counter)=5, counter=0] [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L23] y = 0 [L24] x = 0 [L25] c = 0 VAL [\old(counter)=0, c=0, counter=0, k=2, x=0, y=0] [L27] EXPR counter++ VAL [\old(counter)=0, c=0, counter=1, counter++=0, k=2, x=0, y=0] [L27] COND TRUE counter++<1 [L28] CALL __VERIFIER_assert(4*x - y*y*y*y - 2*y*y*y - y*y == 0) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L28] RET __VERIFIER_assert(4*x - y*y*y*y - 2*y*y*y - y*y == 0) VAL [\old(counter)=0, c=0, counter=1, k=2, x=0, y=0] [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y * y + x VAL [\old(counter)=0, c=1, counter=1, k=2, x=1, y=1] [L27] EXPR counter++ VAL [\old(counter)=0, c=1, counter=2, counter++=1, k=2, x=1, y=1] [L27] COND FALSE !(counter++<1) [L37] CALL __VERIFIER_assert(k*y - (y*y) == 0) VAL [\old(cond)=0, \old(counter)=0, counter=2] [L10] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=2] [L12] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 151 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 88 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 63 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=3, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 75 SizeOfPredicates, 2 NumberOfNonLiveVariables, 142 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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! [2022-01-31 15:49:14,869 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...