/usr/bin/java -ea -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/ps2-ll_unwindbound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-e106359-m [2022-04-14 22:52:30,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-14 22:52:30,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-14 22:52:30,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-14 22:52:30,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-14 22:52:30,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-14 22:52:30,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-14 22:52:30,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-14 22:52:30,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-14 22:52:30,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-14 22:52:30,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-14 22:52:30,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-14 22:52:30,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-14 22:52:30,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-14 22:52:30,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-14 22:52:30,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-14 22:52:30,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-14 22:52:30,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-14 22:52:30,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-14 22:52:30,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-14 22:52:30,427 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-14 22:52:30,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-14 22:52:30,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-14 22:52:30,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-14 22:52:30,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-14 22:52:30,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-14 22:52:30,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-14 22:52:30,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-14 22:52:30,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-14 22:52:30,440 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-14 22:52:30,445 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-14 22:52:30,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-14 22:52:30,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-14 22:52:30,447 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-14 22:52:30,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-14 22:52:30,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-14 22:52:30,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-14 22:52:30,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-14 22:52:30,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-14 22:52:30,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-14 22:52:30,454 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-14 22:52:30,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-14 22:52:30,454 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-14 22:52:30,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-14 22:52:30,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-14 22:52:30,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-14 22:52:30,454 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-14 22:52:30,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-14 22:52:30,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-14 22:52:30,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-14 22:52:30,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-14 22:52:30,456 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-14 22:52:30,456 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-14 22:52:30,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-14 22:52:30,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-14 22:52:30,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-14 22:52:30,678 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-14 22:52:30,679 INFO L275 PluginConnector]: CDTParser initialized [2022-04-14 22:52:30,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps2-ll_unwindbound50.c [2022-04-14 22:52:30,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2432fdf00/ea39d8593d964a2a87b03f07c72201fa/FLAGf8588dbf8 [2022-04-14 22:52:31,141 INFO L306 CDTParser]: Found 1 translation units. [2022-04-14 22:52:31,142 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps2-ll_unwindbound50.c [2022-04-14 22:52:31,145 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2432fdf00/ea39d8593d964a2a87b03f07c72201fa/FLAGf8588dbf8 [2022-04-14 22:52:31,153 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2432fdf00/ea39d8593d964a2a87b03f07c72201fa [2022-04-14 22:52:31,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-14 22:52:31,155 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-14 22:52:31,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-14 22:52:31,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-14 22:52:31,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-14 22:52:31,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 10:52:31" (1/1) ... [2022-04-14 22:52:31,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d2336b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 10:52:31, skipping insertion in model container [2022-04-14 22:52:31,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 10:52:31" (1/1) ... [2022-04-14 22:52:31,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-14 22:52:31,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-14 22:52:31,300 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/ps2-ll_unwindbound50.c[454,467] [2022-04-14 22:52:31,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-14 22:52:31,324 INFO L203 MainTranslator]: Completed pre-run [2022-04-14 22:52:31,332 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/ps2-ll_unwindbound50.c[454,467] [2022-04-14 22:52:31,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-14 22:52:31,346 INFO L208 MainTranslator]: Completed translation [2022-04-14 22:52:31,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 10:52:31 WrapperNode [2022-04-14 22:52:31,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-14 22:52:31,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-14 22:52:31,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-14 22:52:31,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-14 22:52:31,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 10:52:31" (1/1) ... [2022-04-14 22:52:31,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 10:52:31" (1/1) ... [2022-04-14 22:52:31,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 10:52:31" (1/1) ... [2022-04-14 22:52:31,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 10:52:31" (1/1) ... [2022-04-14 22:52:31,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 10:52:31" (1/1) ... [2022-04-14 22:52:31,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 10:52:31" (1/1) ... [2022-04-14 22:52:31,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 10:52:31" (1/1) ... [2022-04-14 22:52:31,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-14 22:52:31,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-14 22:52:31,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-14 22:52:31,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-14 22:52:31,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 10:52:31" (1/1) ... [2022-04-14 22:52:31,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-14 22:52:31,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-14 22:52:31,390 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-14 22:52:31,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-14 22:52:31,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-14 22:52:31,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-14 22:52:31,442 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-14 22:52:31,442 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-14 22:52:31,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-14 22:52:31,443 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-14 22:52:31,443 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-14 22:52:31,443 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-14 22:52:31,443 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-14 22:52:31,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-14 22:52:31,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-14 22:52:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-14 22:52:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-14 22:52:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-14 22:52:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-14 22:52:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-14 22:52:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-14 22:52:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-14 22:52:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-14 22:52:31,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-14 22:52:31,486 INFO L234 CfgBuilder]: Building ICFG [2022-04-14 22:52:31,487 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-14 22:52:31,612 INFO L275 CfgBuilder]: Performing block encoding [2022-04-14 22:52:31,621 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-14 22:52:31,621 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-14 22:52:31,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.04 10:52:31 BoogieIcfgContainer [2022-04-14 22:52:31,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-14 22:52:31,623 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-14 22:52:31,623 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-14 22:52:31,655 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-14 22:52:31,657 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.04 10:52:31" (1/1) ... [2022-04-14 22:52:31,659 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-14 22:52:31,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.04 10:52:31 BasicIcfg [2022-04-14 22:52:31,697 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-14 22:52:31,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-14 22:52:31,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-14 22:52:31,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-14 22:52:31,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 10:52:31" (1/4) ... [2022-04-14 22:52:31,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f7f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 10:52:31, skipping insertion in model container [2022-04-14 22:52:31,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 10:52:31" (2/4) ... [2022-04-14 22:52:31,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f7f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 10:52:31, skipping insertion in model container [2022-04-14 22:52:31,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.04 10:52:31" (3/4) ... [2022-04-14 22:52:31,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f7f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 10:52:31, skipping insertion in model container [2022-04-14 22:52:31,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.04 10:52:31" (4/4) ... [2022-04-14 22:52:31,702 INFO L111 eAbstractionObserver]: Analyzing ICFG ps2-ll_unwindbound50.cJordan [2022-04-14 22:52:31,707 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-14 22:52:31,707 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-14 22:52:31,739 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-14 22:52:31,744 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-14 22:52:31,745 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-14 22:52:31,759 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-14 22:52:31,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-14 22:52:31,763 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 22:52:31,763 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 22:52:31,764 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 22:52:31,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 22:52:31,767 INFO L85 PathProgramCache]: Analyzing trace with hash -630084848, now seen corresponding path program 1 times [2022-04-14 22:52:31,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 22:52:31,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077562865] [2022-04-14 22:52:31,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 22:52:31,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 22:52:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 22:52:31,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 22:52:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 22:52:31,929 INFO L290 TraceCheckUtils]: 0: Hoare triple {30#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {25#true} is VALID [2022-04-14 22:52:31,930 INFO L290 TraceCheckUtils]: 1: Hoare triple {25#true} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-14 22:52:31,930 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {25#true} {25#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-14 22:52:31,931 INFO L272 TraceCheckUtils]: 0: Hoare triple {25#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {30#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 22:52:31,933 INFO L290 TraceCheckUtils]: 1: Hoare triple {30#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {25#true} is VALID [2022-04-14 22:52:31,933 INFO L290 TraceCheckUtils]: 2: Hoare triple {25#true} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-14 22:52:31,934 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {25#true} {25#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-14 22:52:31,934 INFO L272 TraceCheckUtils]: 4: Hoare triple {25#true} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-14 22:52:31,934 INFO L290 TraceCheckUtils]: 5: Hoare triple {25#true} [61] mainENTRY-->L27-3: Formula: (and (= v_main_~c~0_2 0) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~k~0_2 |v_main_#t~nondet4_2|) (= v_main_~x~0_2 0) (= v_main_~y~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~k~0, main_~c~0, main_~y~0] {25#true} is VALID [2022-04-14 22:52:31,935 INFO L290 TraceCheckUtils]: 6: Hoare triple {25#true} [63] L27-3-->L27-4: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] {26#false} is VALID [2022-04-14 22:52:31,935 INFO L272 TraceCheckUtils]: 7: Hoare triple {26#false} [65] L27-4-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_2| (ite (= (+ (* (- 2) v_main_~x~0_9) v_main_~y~0_9 (* v_main_~y~0_9 v_main_~y~0_9)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_9, main_~y~0=v_main_~y~0_9} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {26#false} is VALID [2022-04-14 22:52:31,935 INFO L290 TraceCheckUtils]: 8: Hoare triple {26#false} [69] __VERIFIER_assertENTRY-->L10: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {26#false} is VALID [2022-04-14 22:52:31,935 INFO L290 TraceCheckUtils]: 9: Hoare triple {26#false} [72] L10-->L11: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {26#false} is VALID [2022-04-14 22:52:31,936 INFO L290 TraceCheckUtils]: 10: Hoare triple {26#false} [76] L11-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {26#false} is VALID [2022-04-14 22:52:31,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 22:52:31,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 22:52:31,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077562865] [2022-04-14 22:52:31,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077562865] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 22:52:31,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 22:52:31,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-14 22:52:31,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318235310] [2022-04-14 22:52:31,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 22:52:31,942 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 [2022-04-14 22:52:31,943 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 22:52:31,945 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 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) [2022-04-14 22:52:31,958 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 22:52:31,958 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-14 22:52:31,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 22:52:31,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-14 22:52:31,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-14 22:52:31,975 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) 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) [2022-04-14 22:52:32,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:52:32,048 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-04-14 22:52:32,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-14 22:52:32,048 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 [2022-04-14 22:52:32,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 22:52:32,049 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-14 22:52:32,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2022-04-14 22:52:32,055 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-14 22:52:32,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2022-04-14 22:52:32,059 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 28 transitions. [2022-04-14 22:52:32,093 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 22:52:32,099 INFO L225 Difference]: With dead ends: 23 [2022-04-14 22:52:32,099 INFO L226 Difference]: Without dead ends: 18 [2022-04-14 22:52:32,100 INFO L912 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 [2022-04-14 22:52:32,104 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 22:52:32,105 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 27 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 22:52:32,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-04-14 22:52:32,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-04-14 22:52:32,124 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 22:52:32,124 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:52:32,125 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:52:32,125 INFO L87 Difference]: Start difference. First operand 18 states. Second operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:52:32,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:52:32,131 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-04-14 22:52:32,131 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-04-14 22:52:32,131 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 22:52:32,131 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 22:52:32,132 INFO L74 IsIncluded]: Start isIncluded. First operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 18 states. [2022-04-14 22:52:32,132 INFO L87 Difference]: Start difference. First operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 18 states. [2022-04-14 22:52:32,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:52:32,135 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-04-14 22:52:32,135 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-04-14 22:52:32,135 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 22:52:32,135 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 22:52:32,135 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 22:52:32,136 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 22:52:32,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:52:32,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-04-14 22:52:32,138 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-04-14 22:52:32,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 22:52:32,138 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-04-14 22:52:32,139 INFO L479 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) [2022-04-14 22:52:32,139 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-14 22:52:32,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-14 22:52:32,140 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 22:52:32,140 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 22:52:32,142 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-14 22:52:32,142 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 22:52:32,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 22:52:32,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1971636769, now seen corresponding path program 1 times [2022-04-14 22:52:32,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 22:52:32,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610010427] [2022-04-14 22:52:32,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 22:52:32,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 22:52:32,174 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-14 22:52:32,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [303461641] [2022-04-14 22:52:32,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 22:52:32,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-14 22:52:32,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-14 22:52:32,180 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-14 22:52:32,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-14 22:52:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 22:52:32,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-14 22:52:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 22:52:32,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-14 22:52:32,364 INFO L272 TraceCheckUtils]: 0: Hoare triple {109#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {109#true} is VALID [2022-04-14 22:52:32,366 INFO L290 TraceCheckUtils]: 1: Hoare triple {109#true} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {117#(<= ~counter~0 0)} is VALID [2022-04-14 22:52:32,367 INFO L290 TraceCheckUtils]: 2: Hoare triple {117#(<= ~counter~0 0)} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {117#(<= ~counter~0 0)} is VALID [2022-04-14 22:52:32,368 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {117#(<= ~counter~0 0)} {109#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {117#(<= ~counter~0 0)} is VALID [2022-04-14 22:52:32,368 INFO L272 TraceCheckUtils]: 4: Hoare triple {117#(<= ~counter~0 0)} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {117#(<= ~counter~0 0)} is VALID [2022-04-14 22:52:32,369 INFO L290 TraceCheckUtils]: 5: Hoare triple {117#(<= ~counter~0 0)} [61] mainENTRY-->L27-3: Formula: (and (= v_main_~c~0_2 0) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~k~0_2 |v_main_#t~nondet4_2|) (= v_main_~x~0_2 0) (= v_main_~y~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~k~0, main_~c~0, main_~y~0] {117#(<= ~counter~0 0)} is VALID [2022-04-14 22:52:32,370 INFO L290 TraceCheckUtils]: 6: Hoare triple {117#(<= ~counter~0 0)} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {133#(<= |main_#t~post5| 0)} is VALID [2022-04-14 22:52:32,370 INFO L290 TraceCheckUtils]: 7: Hoare triple {133#(<= |main_#t~post5| 0)} [66] L27-1-->L27-4: Formula: (not (< |v_main_#t~post5_2| 50)) InVars {main_#t~post5=|v_main_#t~post5_2|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {110#false} is VALID [2022-04-14 22:52:32,370 INFO L272 TraceCheckUtils]: 8: Hoare triple {110#false} [65] L27-4-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_2| (ite (= (+ (* (- 2) v_main_~x~0_9) v_main_~y~0_9 (* v_main_~y~0_9 v_main_~y~0_9)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_9, main_~y~0=v_main_~y~0_9} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {110#false} is VALID [2022-04-14 22:52:32,370 INFO L290 TraceCheckUtils]: 9: Hoare triple {110#false} [69] __VERIFIER_assertENTRY-->L10: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {110#false} is VALID [2022-04-14 22:52:32,371 INFO L290 TraceCheckUtils]: 10: Hoare triple {110#false} [72] L10-->L11: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {110#false} is VALID [2022-04-14 22:52:32,371 INFO L290 TraceCheckUtils]: 11: Hoare triple {110#false} [76] L11-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {110#false} is VALID [2022-04-14 22:52:32,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 22:52:32,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-14 22:52:32,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 22:52:32,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610010427] [2022-04-14 22:52:32,372 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-14 22:52:32,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303461641] [2022-04-14 22:52:32,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303461641] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 22:52:32,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 22:52:32,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 22:52:32,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143582568] [2022-04-14 22:52:32,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 22:52:32,376 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 [2022-04-14 22:52:32,377 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 22:52:32,377 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 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) [2022-04-14 22:52:32,387 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 22:52:32,387 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 22:52:32,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 22:52:32,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 22:52:32,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 22:52:32,389 INFO L87 Difference]: Start difference. First operand 17 states and 19 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) [2022-04-14 22:52:32,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:52:32,422 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-14 22:52:32,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 22:52:32,422 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 [2022-04-14 22:52:32,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 22:52:32,423 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-14 22:52:32,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2022-04-14 22:52:32,428 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-14 22:52:32,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2022-04-14 22:52:32,430 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 22 transitions. [2022-04-14 22:52:32,447 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 22:52:32,448 INFO L225 Difference]: With dead ends: 19 [2022-04-14 22:52:32,448 INFO L226 Difference]: Without dead ends: 19 [2022-04-14 22:52:32,448 INFO L912 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 [2022-04-14 22:52:32,450 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 22:52:32,451 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 22:52:32,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-04-14 22:52:32,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-04-14 22:52:32,455 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 22:52:32,455 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:52:32,456 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:52:32,456 INFO L87 Difference]: Start difference. First operand 19 states. Second operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:52:32,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:52:32,458 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-14 22:52:32,458 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-14 22:52:32,458 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 22:52:32,458 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 22:52:32,459 INFO L74 IsIncluded]: Start isIncluded. First operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 19 states. [2022-04-14 22:52:32,459 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 19 states. [2022-04-14 22:52:32,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:52:32,461 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-14 22:52:32,461 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-14 22:52:32,461 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 22:52:32,462 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 22:52:32,462 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 22:52:32,462 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 22:52:32,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:52:32,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-04-14 22:52:32,464 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2022-04-14 22:52:32,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 22:52:32,464 INFO L478 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-04-14 22:52:32,464 INFO L479 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) [2022-04-14 22:52:32,464 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-14 22:52:32,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-14 22:52:32,464 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 22:52:32,465 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 22:52:32,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-14 22:52:32,681 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-14 22:52:32,681 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 22:52:32,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 22:52:32,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1972709245, now seen corresponding path program 1 times [2022-04-14 22:52:32,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 22:52:32,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731322385] [2022-04-14 22:52:32,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 22:52:32,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 22:52:32,690 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-14 22:52:32,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [295987977] [2022-04-14 22:52:32,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 22:52:32,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-14 22:52:32,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-14 22:52:32,705 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-14 22:52:32,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-14 22:52:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 22:52:32,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-14 22:52:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 22:52:32,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-14 22:52:32,835 INFO L272 TraceCheckUtils]: 0: Hoare triple {224#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {224#true} is VALID [2022-04-14 22:52:32,836 INFO L290 TraceCheckUtils]: 1: Hoare triple {224#true} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {224#true} is VALID [2022-04-14 22:52:32,836 INFO L290 TraceCheckUtils]: 2: Hoare triple {224#true} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {224#true} is VALID [2022-04-14 22:52:32,836 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {224#true} {224#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {224#true} is VALID [2022-04-14 22:52:32,836 INFO L272 TraceCheckUtils]: 4: Hoare triple {224#true} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {224#true} is VALID [2022-04-14 22:52:32,837 INFO L290 TraceCheckUtils]: 5: Hoare triple {224#true} [61] mainENTRY-->L27-3: Formula: (and (= v_main_~c~0_2 0) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~k~0_2 |v_main_#t~nondet4_2|) (= v_main_~x~0_2 0) (= v_main_~y~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~k~0, main_~c~0, main_~y~0] {244#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-14 22:52:32,837 INFO L290 TraceCheckUtils]: 6: Hoare triple {244#(and (= main_~x~0 0) (= main_~y~0 0))} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {244#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-14 22:52:32,838 INFO L290 TraceCheckUtils]: 7: Hoare triple {244#(and (= main_~x~0 0) (= main_~y~0 0))} [67] L27-1-->L28: Formula: (< |v_main_#t~post5_4| 50) InVars {main_#t~post5=|v_main_#t~post5_4|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {244#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-14 22:52:32,839 INFO L272 TraceCheckUtils]: 8: Hoare triple {244#(and (= main_~x~0 0) (= main_~y~0 0))} [70] L28-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ v_main_~y~0_8 (* (- 2) v_main_~x~0_8) (* v_main_~y~0_8 v_main_~y~0_8)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {254#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-14 22:52:32,840 INFO L290 TraceCheckUtils]: 9: Hoare triple {254#(<= 1 |__VERIFIER_assert_#in~cond|)} [69] __VERIFIER_assertENTRY-->L10: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {258#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-14 22:52:32,842 INFO L290 TraceCheckUtils]: 10: Hoare triple {258#(<= 1 __VERIFIER_assert_~cond)} [72] L10-->L11: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {225#false} is VALID [2022-04-14 22:52:32,843 INFO L290 TraceCheckUtils]: 11: Hoare triple {225#false} [76] L11-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {225#false} is VALID [2022-04-14 22:52:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 22:52:32,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-14 22:52:32,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 22:52:32,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731322385] [2022-04-14 22:52:32,843 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-14 22:52:32,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295987977] [2022-04-14 22:52:32,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295987977] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 22:52:32,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 22:52:32,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-14 22:52:32,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486015669] [2022-04-14 22:52:32,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 22:52:32,844 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 [2022-04-14 22:52:32,844 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 22:52:32,844 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 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) [2022-04-14 22:52:32,852 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 22:52:32,853 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-14 22:52:32,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 22:52:32,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-14 22:52:32,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-14 22:52:32,853 INFO L87 Difference]: Start difference. First operand 19 states and 21 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) [2022-04-14 22:52:32,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:52:32,916 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-04-14 22:52:32,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-14 22:52:32,916 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 [2022-04-14 22:52:32,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 22:52:32,917 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-14 22:52:32,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 30 transitions. [2022-04-14 22:52:32,918 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-14 22:52:32,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 30 transitions. [2022-04-14 22:52:32,919 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 30 transitions. [2022-04-14 22:52:32,938 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 22:52:32,938 INFO L225 Difference]: With dead ends: 26 [2022-04-14 22:52:32,938 INFO L226 Difference]: Without dead ends: 25 [2022-04-14 22:52:32,939 INFO L912 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 [2022-04-14 22:52:32,939 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 22:52:32,939 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 57 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 22:52:32,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-14 22:52:32,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-04-14 22:52:32,941 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 22:52:32,941 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-14 22:52:32,942 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-14 22:52:32,942 INFO L87 Difference]: Start difference. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-14 22:52:32,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:52:32,943 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-14 22:52:32,943 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-14 22:52:32,943 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 22:52:32,943 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 22:52:32,944 INFO L74 IsIncluded]: Start isIncluded. First operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 25 states. [2022-04-14 22:52:32,944 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 25 states. [2022-04-14 22:52:32,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:52:32,945 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-14 22:52:32,945 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-14 22:52:32,945 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 22:52:32,945 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 22:52:32,945 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 22:52:32,945 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 22:52:32,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-14 22:52:32,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-04-14 22:52:32,946 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12 [2022-04-14 22:52:32,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 22:52:32,946 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-04-14 22:52:32,947 INFO L479 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) [2022-04-14 22:52:32,947 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-14 22:52:32,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-14 22:52:32,947 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 22:52:32,947 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 22:52:32,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-14 22:52:33,163 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-14 22:52:33,164 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 22:52:33,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 22:52:33,164 INFO L85 PathProgramCache]: Analyzing trace with hash -832305310, now seen corresponding path program 1 times [2022-04-14 22:52:33,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 22:52:33,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743463842] [2022-04-14 22:52:33,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 22:52:33,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 22:52:33,176 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-14 22:52:33,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063627228] [2022-04-14 22:52:33,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 22:52:33,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-14 22:52:33,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-14 22:52:33,178 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-14 22:52:33,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-14 22:52:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 22:52:33,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-14 22:52:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 22:52:33,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-14 22:52:33,349 INFO L272 TraceCheckUtils]: 0: Hoare triple {367#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {367#true} is VALID [2022-04-14 22:52:33,350 INFO L290 TraceCheckUtils]: 1: Hoare triple {367#true} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {375#(<= ~counter~0 0)} is VALID [2022-04-14 22:52:33,351 INFO L290 TraceCheckUtils]: 2: Hoare triple {375#(<= ~counter~0 0)} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {375#(<= ~counter~0 0)} is VALID [2022-04-14 22:52:33,351 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {375#(<= ~counter~0 0)} {367#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {375#(<= ~counter~0 0)} is VALID [2022-04-14 22:52:33,352 INFO L272 TraceCheckUtils]: 4: Hoare triple {375#(<= ~counter~0 0)} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {375#(<= ~counter~0 0)} is VALID [2022-04-14 22:52:33,353 INFO L290 TraceCheckUtils]: 5: Hoare triple {375#(<= ~counter~0 0)} [61] mainENTRY-->L27-3: Formula: (and (= v_main_~c~0_2 0) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~k~0_2 |v_main_#t~nondet4_2|) (= v_main_~x~0_2 0) (= v_main_~y~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~k~0, main_~c~0, main_~y~0] {375#(<= ~counter~0 0)} is VALID [2022-04-14 22:52:33,353 INFO L290 TraceCheckUtils]: 6: Hoare triple {375#(<= ~counter~0 0)} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {391#(<= ~counter~0 1)} is VALID [2022-04-14 22:52:33,353 INFO L290 TraceCheckUtils]: 7: Hoare triple {391#(<= ~counter~0 1)} [67] L27-1-->L28: Formula: (< |v_main_#t~post5_4| 50) InVars {main_#t~post5=|v_main_#t~post5_4|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {391#(<= ~counter~0 1)} is VALID [2022-04-14 22:52:33,357 INFO L272 TraceCheckUtils]: 8: Hoare triple {391#(<= ~counter~0 1)} [70] L28-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ v_main_~y~0_8 (* (- 2) v_main_~x~0_8) (* v_main_~y~0_8 v_main_~y~0_8)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {391#(<= ~counter~0 1)} is VALID [2022-04-14 22:52:33,357 INFO L290 TraceCheckUtils]: 9: Hoare triple {391#(<= ~counter~0 1)} [69] __VERIFIER_assertENTRY-->L10: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {391#(<= ~counter~0 1)} is VALID [2022-04-14 22:52:33,357 INFO L290 TraceCheckUtils]: 10: Hoare triple {391#(<= ~counter~0 1)} [73] L10-->L10-2: Formula: (not (= v___VERIFIER_assert_~cond_3 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[] {391#(<= ~counter~0 1)} is VALID [2022-04-14 22:52:33,360 INFO L290 TraceCheckUtils]: 11: Hoare triple {391#(<= ~counter~0 1)} [78] L10-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {391#(<= ~counter~0 1)} is VALID [2022-04-14 22:52:33,361 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {391#(<= ~counter~0 1)} {391#(<= ~counter~0 1)} [81] __VERIFIER_assertEXIT-->L28-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ v_main_~y~0_8 (* (- 2) v_main_~x~0_8) (* v_main_~y~0_8 v_main_~y~0_8)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {391#(<= ~counter~0 1)} is VALID [2022-04-14 22:52:33,361 INFO L290 TraceCheckUtils]: 13: Hoare triple {391#(<= ~counter~0 1)} [75] L28-1-->L27-3: Formula: (and (= v_main_~y~0_5 (+ v_main_~y~0_6 1)) (< v_main_~c~0_6 v_main_~k~0_5) (= v_main_~x~0_5 (+ v_main_~x~0_6 v_main_~y~0_5)) (= (+ v_main_~c~0_6 1) v_main_~c~0_5)) InVars {main_~y~0=v_main_~y~0_6, main_~c~0=v_main_~c~0_6, main_~x~0=v_main_~x~0_6, main_~k~0=v_main_~k~0_5} OutVars{main_~y~0=v_main_~y~0_5, main_~c~0=v_main_~c~0_5, main_~x~0=v_main_~x~0_5, main_~k~0=v_main_~k~0_5} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_~c~0] {391#(<= ~counter~0 1)} is VALID [2022-04-14 22:52:33,362 INFO L290 TraceCheckUtils]: 14: Hoare triple {391#(<= ~counter~0 1)} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {416#(<= |main_#t~post5| 1)} is VALID [2022-04-14 22:52:33,362 INFO L290 TraceCheckUtils]: 15: Hoare triple {416#(<= |main_#t~post5| 1)} [66] L27-1-->L27-4: Formula: (not (< |v_main_#t~post5_2| 50)) InVars {main_#t~post5=|v_main_#t~post5_2|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {368#false} is VALID [2022-04-14 22:52:33,363 INFO L272 TraceCheckUtils]: 16: Hoare triple {368#false} [65] L27-4-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_2| (ite (= (+ (* (- 2) v_main_~x~0_9) v_main_~y~0_9 (* v_main_~y~0_9 v_main_~y~0_9)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_9, main_~y~0=v_main_~y~0_9} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {368#false} is VALID [2022-04-14 22:52:33,364 INFO L290 TraceCheckUtils]: 17: Hoare triple {368#false} [69] __VERIFIER_assertENTRY-->L10: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {368#false} is VALID [2022-04-14 22:52:33,364 INFO L290 TraceCheckUtils]: 18: Hoare triple {368#false} [72] L10-->L11: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {368#false} is VALID [2022-04-14 22:52:33,364 INFO L290 TraceCheckUtils]: 19: Hoare triple {368#false} [76] L11-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {368#false} is VALID [2022-04-14 22:52:33,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 22:52:33,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-14 22:52:33,530 INFO L290 TraceCheckUtils]: 19: Hoare triple {368#false} [76] L11-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {368#false} is VALID [2022-04-14 22:52:33,530 INFO L290 TraceCheckUtils]: 18: Hoare triple {368#false} [72] L10-->L11: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {368#false} is VALID [2022-04-14 22:52:33,531 INFO L290 TraceCheckUtils]: 17: Hoare triple {368#false} [69] __VERIFIER_assertENTRY-->L10: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {368#false} is VALID [2022-04-14 22:52:33,531 INFO L272 TraceCheckUtils]: 16: Hoare triple {368#false} [65] L27-4-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_2| (ite (= (+ (* (- 2) v_main_~x~0_9) v_main_~y~0_9 (* v_main_~y~0_9 v_main_~y~0_9)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_9, main_~y~0=v_main_~y~0_9} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {368#false} is VALID [2022-04-14 22:52:33,531 INFO L290 TraceCheckUtils]: 15: Hoare triple {444#(< |main_#t~post5| 50)} [66] L27-1-->L27-4: Formula: (not (< |v_main_#t~post5_2| 50)) InVars {main_#t~post5=|v_main_#t~post5_2|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {368#false} is VALID [2022-04-14 22:52:33,532 INFO L290 TraceCheckUtils]: 14: Hoare triple {448#(< ~counter~0 50)} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {444#(< |main_#t~post5| 50)} is VALID [2022-04-14 22:52:33,532 INFO L290 TraceCheckUtils]: 13: Hoare triple {448#(< ~counter~0 50)} [75] L28-1-->L27-3: Formula: (and (= v_main_~y~0_5 (+ v_main_~y~0_6 1)) (< v_main_~c~0_6 v_main_~k~0_5) (= v_main_~x~0_5 (+ v_main_~x~0_6 v_main_~y~0_5)) (= (+ v_main_~c~0_6 1) v_main_~c~0_5)) InVars {main_~y~0=v_main_~y~0_6, main_~c~0=v_main_~c~0_6, main_~x~0=v_main_~x~0_6, main_~k~0=v_main_~k~0_5} OutVars{main_~y~0=v_main_~y~0_5, main_~c~0=v_main_~c~0_5, main_~x~0=v_main_~x~0_5, main_~k~0=v_main_~k~0_5} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_~c~0] {448#(< ~counter~0 50)} is VALID [2022-04-14 22:52:33,533 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {367#true} {448#(< ~counter~0 50)} [81] __VERIFIER_assertEXIT-->L28-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ v_main_~y~0_8 (* (- 2) v_main_~x~0_8) (* v_main_~y~0_8 v_main_~y~0_8)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {448#(< ~counter~0 50)} is VALID [2022-04-14 22:52:33,533 INFO L290 TraceCheckUtils]: 11: Hoare triple {367#true} [78] L10-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {367#true} is VALID [2022-04-14 22:52:33,533 INFO L290 TraceCheckUtils]: 10: Hoare triple {367#true} [73] L10-->L10-2: Formula: (not (= v___VERIFIER_assert_~cond_3 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[] {367#true} is VALID [2022-04-14 22:52:33,533 INFO L290 TraceCheckUtils]: 9: Hoare triple {367#true} [69] __VERIFIER_assertENTRY-->L10: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {367#true} is VALID [2022-04-14 22:52:33,533 INFO L272 TraceCheckUtils]: 8: Hoare triple {448#(< ~counter~0 50)} [70] L28-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ v_main_~y~0_8 (* (- 2) v_main_~x~0_8) (* v_main_~y~0_8 v_main_~y~0_8)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {367#true} is VALID [2022-04-14 22:52:33,534 INFO L290 TraceCheckUtils]: 7: Hoare triple {448#(< ~counter~0 50)} [67] L27-1-->L28: Formula: (< |v_main_#t~post5_4| 50) InVars {main_#t~post5=|v_main_#t~post5_4|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {448#(< ~counter~0 50)} is VALID [2022-04-14 22:52:33,534 INFO L290 TraceCheckUtils]: 6: Hoare triple {473#(< ~counter~0 49)} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {448#(< ~counter~0 50)} is VALID [2022-04-14 22:52:33,534 INFO L290 TraceCheckUtils]: 5: Hoare triple {473#(< ~counter~0 49)} [61] mainENTRY-->L27-3: Formula: (and (= v_main_~c~0_2 0) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~k~0_2 |v_main_#t~nondet4_2|) (= v_main_~x~0_2 0) (= v_main_~y~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~k~0, main_~c~0, main_~y~0] {473#(< ~counter~0 49)} is VALID [2022-04-14 22:52:33,535 INFO L272 TraceCheckUtils]: 4: Hoare triple {473#(< ~counter~0 49)} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {473#(< ~counter~0 49)} is VALID [2022-04-14 22:52:33,535 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {473#(< ~counter~0 49)} {367#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {473#(< ~counter~0 49)} is VALID [2022-04-14 22:52:33,536 INFO L290 TraceCheckUtils]: 2: Hoare triple {473#(< ~counter~0 49)} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {473#(< ~counter~0 49)} is VALID [2022-04-14 22:52:33,536 INFO L290 TraceCheckUtils]: 1: Hoare triple {367#true} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {473#(< ~counter~0 49)} is VALID [2022-04-14 22:52:33,536 INFO L272 TraceCheckUtils]: 0: Hoare triple {367#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {367#true} is VALID [2022-04-14 22:52:33,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 22:52:33,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 22:52:33,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743463842] [2022-04-14 22:52:33,537 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-14 22:52:33,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063627228] [2022-04-14 22:52:33,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063627228] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-14 22:52:33,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-14 22:52:33,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-04-14 22:52:33,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913910438] [2022-04-14 22:52:33,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-14 22:52:33,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 20 [2022-04-14 22:52:33,538 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 22:52:33,538 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-14 22:52:33,561 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 22:52:33,561 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-14 22:52:33,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 22:52:33,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-14 22:52:33,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-04-14 22:52:33,562 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-14 22:52:33,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:52:33,660 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2022-04-14 22:52:33,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-14 22:52:33,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 20 [2022-04-14 22:52:33,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 22:52:33,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-14 22:52:33,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 56 transitions. [2022-04-14 22:52:33,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-14 22:52:33,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 56 transitions. [2022-04-14 22:52:33,666 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 10 states and 56 transitions. [2022-04-14 22:52:33,702 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 56 edges. 56 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 22:52:33,704 INFO L225 Difference]: With dead ends: 49 [2022-04-14 22:52:33,704 INFO L226 Difference]: Without dead ends: 49 [2022-04-14 22:52:33,704 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-04-14 22:52:33,704 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 22:52:33,705 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 72 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 22:52:33,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-04-14 22:52:33,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2022-04-14 22:52:33,708 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 22:52:33,708 INFO L82 GeneralOperation]: Start isEquivalent. First operand 49 states. Second operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-14 22:52:33,708 INFO L74 IsIncluded]: Start isIncluded. First operand 49 states. Second operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-14 22:52:33,709 INFO L87 Difference]: Start difference. First operand 49 states. Second operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-14 22:52:33,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:52:33,710 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2022-04-14 22:52:33,710 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2022-04-14 22:52:33,711 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 22:52:33,711 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 22:52:33,711 INFO L74 IsIncluded]: Start isIncluded. First operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 49 states. [2022-04-14 22:52:33,711 INFO L87 Difference]: Start difference. First operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 49 states. [2022-04-14 22:52:33,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:52:33,713 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2022-04-14 22:52:33,713 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2022-04-14 22:52:33,713 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 22:52:33,713 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 22:52:33,714 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 22:52:33,714 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 22:52:33,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-14 22:52:33,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-04-14 22:52:33,715 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 20 [2022-04-14 22:52:33,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 22:52:33,715 INFO L478 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-04-14 22:52:33,715 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-14 22:52:33,716 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-04-14 22:52:33,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-14 22:52:33,716 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 22:52:33,716 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 22:52:33,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-04-14 22:52:33,930 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-14 22:52:33,931 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 22:52:33,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 22:52:33,931 INFO L85 PathProgramCache]: Analyzing trace with hash -831232834, now seen corresponding path program 1 times [2022-04-14 22:52:33,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 22:52:33,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780913517] [2022-04-14 22:52:33,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 22:52:33,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 22:52:33,940 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-14 22:52:33,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063552545] [2022-04-14 22:52:33,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 22:52:33,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-14 22:52:33,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-14 22:52:33,941 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-14 22:52:33,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-14 22:52:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 22:52:33,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-14 22:52:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 22:52:33,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-14 22:52:34,085 INFO L272 TraceCheckUtils]: 0: Hoare triple {692#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-14 22:52:34,086 INFO L290 TraceCheckUtils]: 1: Hoare triple {692#true} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {692#true} is VALID [2022-04-14 22:52:34,086 INFO L290 TraceCheckUtils]: 2: Hoare triple {692#true} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-14 22:52:34,086 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {692#true} {692#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-14 22:52:34,086 INFO L272 TraceCheckUtils]: 4: Hoare triple {692#true} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-14 22:52:34,087 INFO L290 TraceCheckUtils]: 5: Hoare triple {692#true} [61] mainENTRY-->L27-3: Formula: (and (= v_main_~c~0_2 0) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~k~0_2 |v_main_#t~nondet4_2|) (= v_main_~x~0_2 0) (= v_main_~y~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~k~0, main_~c~0, main_~y~0] {712#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-14 22:52:34,087 INFO L290 TraceCheckUtils]: 6: Hoare triple {712#(and (= main_~x~0 0) (= main_~y~0 0))} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {712#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-14 22:52:34,087 INFO L290 TraceCheckUtils]: 7: Hoare triple {712#(and (= main_~x~0 0) (= main_~y~0 0))} [67] L27-1-->L28: Formula: (< |v_main_#t~post5_4| 50) InVars {main_#t~post5=|v_main_#t~post5_4|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {712#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-14 22:52:34,087 INFO L272 TraceCheckUtils]: 8: Hoare triple {712#(and (= main_~x~0 0) (= main_~y~0 0))} [70] L28-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ v_main_~y~0_8 (* (- 2) v_main_~x~0_8) (* v_main_~y~0_8 v_main_~y~0_8)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {692#true} is VALID [2022-04-14 22:52:34,088 INFO L290 TraceCheckUtils]: 9: Hoare triple {692#true} [69] __VERIFIER_assertENTRY-->L10: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {692#true} is VALID [2022-04-14 22:52:34,088 INFO L290 TraceCheckUtils]: 10: Hoare triple {692#true} [73] L10-->L10-2: Formula: (not (= v___VERIFIER_assert_~cond_3 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-14 22:52:34,088 INFO L290 TraceCheckUtils]: 11: Hoare triple {692#true} [78] L10-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-14 22:52:34,088 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {692#true} {712#(and (= main_~x~0 0) (= main_~y~0 0))} [81] __VERIFIER_assertEXIT-->L28-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ v_main_~y~0_8 (* (- 2) v_main_~x~0_8) (* v_main_~y~0_8 v_main_~y~0_8)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {712#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-14 22:52:34,089 INFO L290 TraceCheckUtils]: 13: Hoare triple {712#(and (= main_~x~0 0) (= main_~y~0 0))} [75] L28-1-->L27-3: Formula: (and (= v_main_~y~0_5 (+ v_main_~y~0_6 1)) (< v_main_~c~0_6 v_main_~k~0_5) (= v_main_~x~0_5 (+ v_main_~x~0_6 v_main_~y~0_5)) (= (+ v_main_~c~0_6 1) v_main_~c~0_5)) InVars {main_~y~0=v_main_~y~0_6, main_~c~0=v_main_~c~0_6, main_~x~0=v_main_~x~0_6, main_~k~0=v_main_~k~0_5} OutVars{main_~y~0=v_main_~y~0_5, main_~c~0=v_main_~c~0_5, main_~x~0=v_main_~x~0_5, main_~k~0=v_main_~k~0_5} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_~c~0] {737#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0)) 0))} is VALID [2022-04-14 22:52:34,089 INFO L290 TraceCheckUtils]: 14: Hoare triple {737#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0)) 0))} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {737#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0)) 0))} is VALID [2022-04-14 22:52:34,090 INFO L290 TraceCheckUtils]: 15: Hoare triple {737#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0)) 0))} [67] L27-1-->L28: Formula: (< |v_main_#t~post5_4| 50) InVars {main_#t~post5=|v_main_#t~post5_4|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {737#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0)) 0))} is VALID [2022-04-14 22:52:34,090 INFO L272 TraceCheckUtils]: 16: Hoare triple {737#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0)) 0))} [70] L28-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ v_main_~y~0_8 (* (- 2) v_main_~x~0_8) (* v_main_~y~0_8 v_main_~y~0_8)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {747#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-14 22:52:34,091 INFO L290 TraceCheckUtils]: 17: Hoare triple {747#(<= 1 |__VERIFIER_assert_#in~cond|)} [69] __VERIFIER_assertENTRY-->L10: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {751#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-14 22:52:34,091 INFO L290 TraceCheckUtils]: 18: Hoare triple {751#(<= 1 __VERIFIER_assert_~cond)} [72] L10-->L11: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {693#false} is VALID [2022-04-14 22:52:34,091 INFO L290 TraceCheckUtils]: 19: Hoare triple {693#false} [76] L11-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {693#false} is VALID [2022-04-14 22:52:34,091 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 22:52:34,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-14 22:52:34,211 INFO L290 TraceCheckUtils]: 19: Hoare triple {693#false} [76] L11-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {693#false} is VALID [2022-04-14 22:52:34,212 INFO L290 TraceCheckUtils]: 18: Hoare triple {751#(<= 1 __VERIFIER_assert_~cond)} [72] L10-->L11: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {693#false} is VALID [2022-04-14 22:52:34,212 INFO L290 TraceCheckUtils]: 17: Hoare triple {747#(<= 1 |__VERIFIER_assert_#in~cond|)} [69] __VERIFIER_assertENTRY-->L10: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {751#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-14 22:52:34,213 INFO L272 TraceCheckUtils]: 16: Hoare triple {767#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} [70] L28-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ v_main_~y~0_8 (* (- 2) v_main_~x~0_8) (* v_main_~y~0_8 v_main_~y~0_8)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {747#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-14 22:52:34,213 INFO L290 TraceCheckUtils]: 15: Hoare triple {767#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} [67] L27-1-->L28: Formula: (< |v_main_#t~post5_4| 50) InVars {main_#t~post5=|v_main_#t~post5_4|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {767#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} is VALID [2022-04-14 22:52:34,216 INFO L290 TraceCheckUtils]: 14: Hoare triple {767#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {767#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} is VALID [2022-04-14 22:52:34,217 INFO L290 TraceCheckUtils]: 13: Hoare triple {767#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} [75] L28-1-->L27-3: Formula: (and (= v_main_~y~0_5 (+ v_main_~y~0_6 1)) (< v_main_~c~0_6 v_main_~k~0_5) (= v_main_~x~0_5 (+ v_main_~x~0_6 v_main_~y~0_5)) (= (+ v_main_~c~0_6 1) v_main_~c~0_5)) InVars {main_~y~0=v_main_~y~0_6, main_~c~0=v_main_~c~0_6, main_~x~0=v_main_~x~0_6, main_~k~0=v_main_~k~0_5} OutVars{main_~y~0=v_main_~y~0_5, main_~c~0=v_main_~c~0_5, main_~x~0=v_main_~x~0_5, main_~k~0=v_main_~k~0_5} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_~c~0] {767#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} is VALID [2022-04-14 22:52:34,218 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {692#true} {767#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} [81] __VERIFIER_assertEXIT-->L28-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ v_main_~y~0_8 (* (- 2) v_main_~x~0_8) (* v_main_~y~0_8 v_main_~y~0_8)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {767#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} is VALID [2022-04-14 22:52:34,218 INFO L290 TraceCheckUtils]: 11: Hoare triple {692#true} [78] L10-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-14 22:52:34,218 INFO L290 TraceCheckUtils]: 10: Hoare triple {692#true} [73] L10-->L10-2: Formula: (not (= v___VERIFIER_assert_~cond_3 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-14 22:52:34,218 INFO L290 TraceCheckUtils]: 9: Hoare triple {692#true} [69] __VERIFIER_assertENTRY-->L10: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {692#true} is VALID [2022-04-14 22:52:34,218 INFO L272 TraceCheckUtils]: 8: Hoare triple {767#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} [70] L28-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ v_main_~y~0_8 (* (- 2) v_main_~x~0_8) (* v_main_~y~0_8 v_main_~y~0_8)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {692#true} is VALID [2022-04-14 22:52:34,219 INFO L290 TraceCheckUtils]: 7: Hoare triple {767#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} [67] L27-1-->L28: Formula: (< |v_main_#t~post5_4| 50) InVars {main_#t~post5=|v_main_#t~post5_4|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {767#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} is VALID [2022-04-14 22:52:34,219 INFO L290 TraceCheckUtils]: 6: Hoare triple {767#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {767#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} is VALID [2022-04-14 22:52:34,220 INFO L290 TraceCheckUtils]: 5: Hoare triple {692#true} [61] mainENTRY-->L27-3: Formula: (and (= v_main_~c~0_2 0) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~k~0_2 |v_main_#t~nondet4_2|) (= v_main_~x~0_2 0) (= v_main_~y~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~k~0, main_~c~0, main_~y~0] {767#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} is VALID [2022-04-14 22:52:34,220 INFO L272 TraceCheckUtils]: 4: Hoare triple {692#true} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-14 22:52:34,221 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {692#true} {692#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-14 22:52:34,221 INFO L290 TraceCheckUtils]: 2: Hoare triple {692#true} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-14 22:52:34,222 INFO L290 TraceCheckUtils]: 1: Hoare triple {692#true} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {692#true} is VALID [2022-04-14 22:52:34,223 INFO L272 TraceCheckUtils]: 0: Hoare triple {692#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-14 22:52:34,223 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-14 22:52:34,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 22:52:34,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780913517] [2022-04-14 22:52:34,223 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-14 22:52:34,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063552545] [2022-04-14 22:52:34,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063552545] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-14 22:52:34,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-14 22:52:34,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-04-14 22:52:34,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237449680] [2022-04-14 22:52:34,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 22:52:34,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-04-14 22:52:34,226 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 22:52:34,226 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:52:34,237 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 22:52:34,237 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-14 22:52:34,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 22:52:34,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-14 22:52:34,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-14 22:52:34,239 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:52:34,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:52:34,297 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2022-04-14 22:52:34,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-14 22:52:34,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-04-14 22:52:34,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 22:52:34,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:52:34,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2022-04-14 22:52:34,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:52:34,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2022-04-14 22:52:34,301 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 18 transitions. [2022-04-14 22:52:34,313 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 22:52:34,313 INFO L225 Difference]: With dead ends: 43 [2022-04-14 22:52:34,313 INFO L226 Difference]: Without dead ends: 0 [2022-04-14 22:52:34,313 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-14 22:52:34,314 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 22:52:34,315 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 39 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 22:52:34,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-14 22:52:34,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-14 22:52:34,317 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 22:52:34,317 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-14 22:52:34,317 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-14 22:52:34,317 INFO L87 Difference]: Start difference. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-14 22:52:34,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:52:34,317 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-14 22:52:34,317 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-14 22:52:34,318 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 22:52:34,318 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 22:52:34,318 INFO L74 IsIncluded]: Start isIncluded. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-14 22:52:34,318 INFO L87 Difference]: Start difference. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-14 22:52:34,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:52:34,318 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-14 22:52:34,318 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-14 22:52:34,318 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 22:52:34,318 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 22:52:34,318 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 22:52:34,318 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 22:52:34,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-14 22:52:34,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-14 22:52:34,318 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2022-04-14 22:52:34,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 22:52:34,318 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-14 22:52:34,321 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:52:34,321 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-14 22:52:34,321 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 22:52:34,322 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-14 22:52:34,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-04-14 22:52:34,531 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-14 22:52:34,533 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-04-14 22:52:34,534 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-14 22:52:34,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 10:52:34 BasicIcfg [2022-04-14 22:52:34,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-14 22:52:34,536 INFO L158 Benchmark]: Toolchain (without parser) took 3381.10ms. Allocated memory was 198.2MB in the beginning and 241.2MB in the end (delta: 43.0MB). Free memory was 149.0MB in the beginning and 147.7MB in the end (delta: 1.3MB). Peak memory consumption was 44.3MB. Max. memory is 8.0GB. [2022-04-14 22:52:34,536 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 198.2MB. Free memory is still 165.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-14 22:52:34,537 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.41ms. Allocated memory is still 198.2MB. Free memory was 148.8MB in the beginning and 174.9MB in the end (delta: -26.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-04-14 22:52:34,537 INFO L158 Benchmark]: Boogie Preprocessor took 17.69ms. Allocated memory is still 198.2MB. Free memory was 174.9MB in the beginning and 173.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-14 22:52:34,537 INFO L158 Benchmark]: RCFGBuilder took 257.11ms. Allocated memory is still 198.2MB. Free memory was 173.3MB in the beginning and 162.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-14 22:52:34,537 INFO L158 Benchmark]: IcfgTransformer took 73.76ms. Allocated memory is still 198.2MB. Free memory was 162.8MB in the beginning and 161.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-14 22:52:34,537 INFO L158 Benchmark]: TraceAbstraction took 2837.61ms. Allocated memory was 198.2MB in the beginning and 241.2MB in the end (delta: 43.0MB). Free memory was 160.7MB in the beginning and 148.2MB in the end (delta: 12.5MB). Peak memory consumption was 56.5MB. Max. memory is 8.0GB. [2022-04-14 22:52:34,538 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 198.2MB. Free memory is still 165.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 190.41ms. Allocated memory is still 198.2MB. Free memory was 148.8MB in the beginning and 174.9MB in the end (delta: -26.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.69ms. Allocated memory is still 198.2MB. Free memory was 174.9MB in the beginning and 173.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 257.11ms. Allocated memory is still 198.2MB. Free memory was 173.3MB in the beginning and 162.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 73.76ms. Allocated memory is still 198.2MB. Free memory was 162.8MB in the beginning and 161.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2837.61ms. Allocated memory was 198.2MB in the beginning and 241.2MB in the end (delta: 43.0MB). Free memory was 160.7MB in the beginning and 148.2MB in the end (delta: 12.5MB). Peak memory consumption was 56.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 53 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 240 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 151 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 76 IncrementalHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 89 mSDtfsCounter, 76 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=4, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 317 SizeOfPredicates, 5 NumberOfNonLiveVariables, 326 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 11/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-04-14 22:52:34,562 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...