/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench/ps2-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 13:48:42,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 13:48:42,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 13:48:42,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 13:48:42,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 13:48:42,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 13:48:42,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 13:48:42,987 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-03-20 13:48:42,992 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 13:48:42,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 13:48:42,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 13:48:42,993 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 13:48:42,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 13:48:42,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 13:48:42,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 13:48:42,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 13:48:42,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 13:48:42,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 13:48:42,993 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 13:48:42,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 13:48:42,993 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 13:48:42,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 13:48:42,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 13:48:42,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 13:48:42,994 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 13:48:42,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 13:48:42,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 13:48:42,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 13:48:42,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-20 13:48:42,994 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-20 13:48:42,994 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-20 13:48:42,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 13:48:42,994 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-03-20 13:48:42,995 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 13:48:43,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 13:48:43,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 13:48:43,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 13:48:43,195 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 13:48:43,196 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 13:48:43,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/ps2-ll.c [2022-03-20 13:48:43,254 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82b2a0229/9bc63c8095e94d619b59499d59e481e6/FLAG6bcefde32 [2022-03-20 13:48:43,553 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 13:48:43,553 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/ps2-ll.c [2022-03-20 13:48:43,557 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82b2a0229/9bc63c8095e94d619b59499d59e481e6/FLAG6bcefde32 [2022-03-20 13:48:43,995 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82b2a0229/9bc63c8095e94d619b59499d59e481e6 [2022-03-20 13:48:43,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 13:48:43,998 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 13:48:44,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 13:48:44,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 13:48:44,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 13:48:44,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 01:48:43" (1/1) ... [2022-03-20 13:48:44,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fedb9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:48:44, skipping insertion in model container [2022-03-20 13:48:44,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 01:48:43" (1/1) ... [2022-03-20 13:48:44,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 13:48:44,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 13:48:44,164 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/ps2-ll.c[454,467] [2022-03-20 13:48:44,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 13:48:44,180 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 13:48:44,188 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/ps2-ll.c[454,467] [2022-03-20 13:48:44,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 13:48:44,198 INFO L208 MainTranslator]: Completed translation [2022-03-20 13:48:44,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:48:44 WrapperNode [2022-03-20 13:48:44,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 13:48:44,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 13:48:44,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 13:48:44,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 13:48:44,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:48:44" (1/1) ... [2022-03-20 13:48:44,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:48:44" (1/1) ... [2022-03-20 13:48:44,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:48:44" (1/1) ... [2022-03-20 13:48:44,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:48:44" (1/1) ... [2022-03-20 13:48:44,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:48:44" (1/1) ... [2022-03-20 13:48:44,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:48:44" (1/1) ... [2022-03-20 13:48:44,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:48:44" (1/1) ... [2022-03-20 13:48:44,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 13:48:44,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 13:48:44,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 13:48:44,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 13:48:44,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:48:44" (1/1) ... [2022-03-20 13:48:44,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 13:48:44,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:48:44,241 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) [2022-03-20 13:48:44,274 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 [2022-03-20 13:48:44,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 13:48:44,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 13:48:44,288 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 13:48:44,288 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 13:48:44,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 13:48:44,288 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 13:48:44,289 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 13:48:44,289 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 13:48:44,289 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 13:48:44,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 13:48:44,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 13:48:44,290 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 13:48:44,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 13:48:44,290 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 13:48:44,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 13:48:44,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 13:48:44,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 13:48:44,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 13:48:44,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 13:48:44,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 13:48:44,340 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 13:48:44,342 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 13:48:44,429 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 13:48:44,435 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 13:48:44,435 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 13:48:44,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 01:48:44 BoogieIcfgContainer [2022-03-20 13:48:44,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 13:48:44,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 13:48:44,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 13:48:44,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 13:48:44,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 01:48:43" (1/3) ... [2022-03-20 13:48:44,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc2a1f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 01:48:44, skipping insertion in model container [2022-03-20 13:48:44,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:48:44" (2/3) ... [2022-03-20 13:48:44,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc2a1f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 01:48:44, skipping insertion in model container [2022-03-20 13:48:44,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 01:48:44" (3/3) ... [2022-03-20 13:48:44,460 INFO L111 eAbstractionObserver]: Analyzing ICFG ps2-ll.c [2022-03-20 13:48:44,463 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-20 13:48:44,463 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 13:48:44,507 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 13:48:44,512 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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 [2022-03-20 13:48:44,512 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 13:48:44,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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) [2022-03-20 13:48:44,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-20 13:48:44,537 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:48:44,537 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:48:44,538 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:48:44,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:48:44,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1469283919, now seen corresponding path program 1 times [2022-03-20 13:48:44,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:48:44,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1956605673] [2022-03-20 13:48:44,555 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 13:48:44,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1469283919, now seen corresponding path program 2 times [2022-03-20 13:48:44,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:48:44,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477412041] [2022-03-20 13:48:44,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:48:44,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:48:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:48:44,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:48:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:48:44,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:48:44,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:48:44,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477412041] [2022-03-20 13:48:44,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477412041] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:48:44,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:48:44,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 13:48:44,727 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:48:44,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1956605673] [2022-03-20 13:48:44,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1956605673] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:48:44,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:48:44,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 13:48:44,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593850020] [2022-03-20 13:48:44,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:48:44,733 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 13:48:44,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:48:44,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 13:48:44,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 13:48:44,770 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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) [2022-03-20 13:48:44,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:48:44,823 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-03-20 13:48:44,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 13:48:44,825 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 [2022-03-20 13:48:44,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:48:44,835 INFO L225 Difference]: With dead ends: 36 [2022-03-20 13:48:44,836 INFO L226 Difference]: Without dead ends: 16 [2022-03-20 13:48:44,840 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 [2022-03-20 13:48:44,843 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 11 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 13:48:44,844 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 23 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 13:48:44,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-03-20 13:48:44,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-03-20 13:48:44,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 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) [2022-03-20 13:48:44,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-03-20 13:48:44,879 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2022-03-20 13:48:44,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:48:44,880 INFO L478 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-03-20 13:48:44,880 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) [2022-03-20 13:48:44,880 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-03-20 13:48:44,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-20 13:48:44,881 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:48:44,881 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:48:44,881 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 13:48:44,881 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:48:44,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:48:44,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1467496459, now seen corresponding path program 1 times [2022-03-20 13:48:44,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:48:44,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [977505411] [2022-03-20 13:48:44,885 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 13:48:44,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1467496459, now seen corresponding path program 2 times [2022-03-20 13:48:44,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:48:44,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447196884] [2022-03-20 13:48:44,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:48:44,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:48:44,921 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 13:48:44,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907416654] [2022-03-20 13:48:44,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 13:48:44,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:48:44,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:48:44,928 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) [2022-03-20 13:48:44,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 13:48:44,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 13:48:44,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:48:44,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 13:48:44,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:48:45,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:48:45,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 13:48:45,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:48:45,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447196884] [2022-03-20 13:48:45,060 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 13:48:45,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907416654] [2022-03-20 13:48:45,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907416654] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:48:45,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:48:45,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 13:48:45,061 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:48:45,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [977505411] [2022-03-20 13:48:45,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [977505411] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:48:45,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:48:45,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 13:48:45,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273177189] [2022-03-20 13:48:45,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:48:45,062 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 13:48:45,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:48:45,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 13:48:45,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 13:48:45,063 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-03-20 13:48:45,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:48:45,090 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2022-03-20 13:48:45,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 13:48:45,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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 11 [2022-03-20 13:48:45,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:48:45,091 INFO L225 Difference]: With dead ends: 26 [2022-03-20 13:48:45,091 INFO L226 Difference]: Without dead ends: 23 [2022-03-20 13:48:45,091 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 13:48:45,092 INFO L913 BasicCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 13:48:45,092 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 53 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 13:48:45,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-03-20 13:48:45,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-03-20 13:48:45,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 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) [2022-03-20 13:48:45,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-03-20 13:48:45,097 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 11 [2022-03-20 13:48:45,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:48:45,097 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-03-20 13:48:45,098 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-03-20 13:48:45,098 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-03-20 13:48:45,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-20 13:48:45,098 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:48:45,098 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:48:45,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 13:48:45,311 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 [2022-03-20 13:48:45,312 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:48:45,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:48:45,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1366100723, now seen corresponding path program 1 times [2022-03-20 13:48:45,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:48:45,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1415010279] [2022-03-20 13:48:49,203 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 3=1}}, 0 SequentialAcceleration, 1 AlternatingAcceleration, 1 QuantifierFreeResult [2022-03-20 13:48:49,204 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:48:49,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1447096565, now seen corresponding path program 1 times [2022-03-20 13:48:49,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:48:49,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021349957] [2022-03-20 13:48:49,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:48:49,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:48:49,212 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 13:48:49,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [345238590] [2022-03-20 13:48:49,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:48:49,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:48:49,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:48:49,224 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) [2022-03-20 13:48:49,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 13:48:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:48:49,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-20 13:48:49,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:48:50,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:48:50,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 13:48:50,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:48:50,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021349957] [2022-03-20 13:48:50,033 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 13:48:50,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345238590] [2022-03-20 13:48:50,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345238590] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:48:50,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:48:50,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 13:49:14,125 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:49:14,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1415010279] [2022-03-20 13:49:14,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1415010279] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:49:14,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:49:14,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 13:49:14,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298356204] [2022-03-20 13:49:14,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:49:14,126 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 13:49:14,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:49:14,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 13:49:14,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=96, Unknown=3, NotChecked=0, Total=132 [2022-03-20 13:49:14,127 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 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) [2022-03-20 13:49:15,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:49:15,233 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2022-03-20 13:49:15,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 13:49:15,234 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 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) Word has length 18 [2022-03-20 13:49:15,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:49:15,235 INFO L225 Difference]: With dead ends: 29 [2022-03-20 13:49:15,235 INFO L226 Difference]: Without dead ends: 27 [2022-03-20 13:49:15,236 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=38, Invalid=115, Unknown=3, NotChecked=0, Total=156 [2022-03-20 13:49:15,237 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 13:49:15,237 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 86 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 12 Unchecked, 0.0s Time] [2022-03-20 13:49:15,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-03-20 13:49:15,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-03-20 13:49:15,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-20 13:49:15,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2022-03-20 13:49:15,244 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 18 [2022-03-20 13:49:15,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:49:15,244 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2022-03-20 13:49:15,245 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 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) [2022-03-20 13:49:15,245 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-03-20 13:49:15,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-20 13:49:15,253 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:49:15,253 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:49:15,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 13:49:15,459 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 [2022-03-20 13:49:15,460 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:49:15,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:49:15,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1683365224, now seen corresponding path program 1 times [2022-03-20 13:49:15,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:49:15,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [878069966] [2022-03-20 13:49:16,223 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 3=1}}, 0 SequentialAcceleration, 1 AlternatingAcceleration, 1 QuantifierFreeResult [2022-03-20 13:49:16,224 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:49:16,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2145841446, now seen corresponding path program 1 times [2022-03-20 13:49:16,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:49:16,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933247171] [2022-03-20 13:49:16,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:49:16,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:49:16,230 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 13:49:16,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [532550743] [2022-03-20 13:49:16,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:49:16,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:49:16,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:49:16,238 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) [2022-03-20 13:49:16,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-20 13:49:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:49:16,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-20 13:49:16,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:49:16,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:49:16,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:49:16,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:49:16,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:49:16,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933247171] [2022-03-20 13:49:16,620 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 13:49:16,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532550743] [2022-03-20 13:49:16,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532550743] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:49:16,620 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 13:49:16,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2022-03-20 13:49:16,933 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:49:16,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [878069966] [2022-03-20 13:49:16,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [878069966] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:49:16,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:49:16,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 13:49:16,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341318696] [2022-03-20 13:49:16,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:49:16,934 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 13:49:16,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:49:16,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 13:49:16,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-03-20 13:49:16,935 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 13:49:17,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:49:17,046 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-03-20 13:49:17,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 13:49:17,048 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2022-03-20 13:49:17,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:49:17,048 INFO L225 Difference]: With dead ends: 27 [2022-03-20 13:49:17,048 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 13:49:17,052 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-03-20 13:49:17,052 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 13:49:17,053 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 74 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 13:49:17,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 13:49:17,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 13:49:17,053 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) [2022-03-20 13:49:17,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 13:49:17,053 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2022-03-20 13:49:17,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:49:17,054 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 13:49:17,054 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 13:49:17,054 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 13:49:17,054 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 13:49:17,056 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 13:49:17,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-20 13:49:17,256 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 [2022-03-20 13:49:17,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-20 13:49:31,572 WARN L232 SmtUtils]: Spent 8.27s on a formula simplification. DAG size of input: 106 DAG size of output: 12 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-03-20 13:49:34,533 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2022-03-20 13:49:34,533 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2022-03-20 13:49:34,533 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2022-03-20 13:49:34,533 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2022-03-20 13:49:34,534 INFO L882 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-03-20 13:49:34,534 INFO L882 garLoopResultBuilder]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2022-03-20 13:49:34,534 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2022-03-20 13:49:34,534 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 17 39) the Hoare annotation is: true [2022-03-20 13:49:34,534 INFO L878 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (or (and (= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0))) (< main_~c~0 (+ main_~k~0 1))) (and (= main_~x~0 0) (= main_~c~0 0) (= main_~y~0 0))) [2022-03-20 13:49:34,534 INFO L878 garLoopResultBuilder]: At program point L27-1(lines 26 35) the Hoare annotation is: (or (and (exists ((v_main_~c~0_BEFORE_RETURN_1 Int) (v_main_~y~0_15 Int) (v_main_~k~0_BEFORE_RETURN_1 Int) (v_main_~x~0_15 Int) (v___VERIFIER_assert_~cond_BEFORE_RETURN_1 Int)) (let ((.cse1 (= v___VERIFIER_assert_~cond_BEFORE_RETURN_1 1)) (.cse2 (= v___VERIFIER_assert_~cond_BEFORE_RETURN_1 0))) (and (let ((.cse0 (= (+ v_main_~y~0_15 (* v_main_~y~0_15 v_main_~y~0_15)) (* v_main_~x~0_15 2)))) (or (and .cse0 .cse1) (and .cse2 (not .cse0)))) (let ((.cse3 (= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0))))) (or (and .cse1 .cse3) (and .cse2 (not .cse3)))) (or (let ((.cse4 (div (* (- 1) v_main_~y~0_15) (- 2)))) (and (= (mod v_main_~y~0_15 2) 0) (= v_main_~x~0_15 (+ .cse4 (* 2 (* .cse4 .cse4)))) (< .cse4 (+ (div (+ v_main_~k~0_BEFORE_RETURN_1 (- 2)) 2) 2)) (< 0 .cse4) (= (* 2 .cse4) v_main_~c~0_BEFORE_RETURN_1))) (let ((.cse5 (div (+ (* (- 1) v_main_~c~0_BEFORE_RETURN_1) 1) (- 2)))) (and (= v_main_~y~0_15 (+ (* .cse5 2) 1)) (< .cse5 (+ (div (+ (- 1) v_main_~k~0_BEFORE_RETURN_1) 2) 1)) (= v_main_~x~0_15 (+ (* .cse5 3) (* 2 (* .cse5 .cse5)) 1)) (<= 0 .cse5) (= (mod (+ v_main_~c~0_BEFORE_RETURN_1 1) 2) 0))) (and (= v_main_~x~0_15 0) (= v_main_~y~0_15 0) (= v_main_~c~0_BEFORE_RETURN_1 0)))))) (= main_~y~0 0)) (and (= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0))) (< main_~c~0 (+ main_~k~0 1)))) [2022-03-20 13:49:34,534 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 17 39) the Hoare annotation is: true [2022-03-20 13:49:34,534 INFO L878 garLoopResultBuilder]: At program point L26-2(lines 26 35) the Hoare annotation is: (or (and (= main_~x~0 0) (= main_~c~0 0) (= main_~y~0 0)) (and (exists ((v_main_~c~0_BEFORE_RETURN_1 Int) (v_main_~y~0_15 Int) (v_main_~k~0_BEFORE_RETURN_1 Int) (v_main_~x~0_15 Int) (v___VERIFIER_assert_~cond_BEFORE_RETURN_1 Int)) (let ((.cse1 (= v___VERIFIER_assert_~cond_BEFORE_RETURN_1 1)) (.cse2 (= v___VERIFIER_assert_~cond_BEFORE_RETURN_1 0))) (and (let ((.cse0 (= (+ v_main_~y~0_15 (* v_main_~y~0_15 v_main_~y~0_15)) (* v_main_~x~0_15 2)))) (or (and .cse0 .cse1) (and .cse2 (not .cse0)))) (let ((.cse3 (= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0))))) (or (and .cse1 .cse3) (and .cse2 (not .cse3)))) (or (let ((.cse4 (div (* (- 1) v_main_~y~0_15) (- 2)))) (and (= (mod v_main_~y~0_15 2) 0) (= v_main_~x~0_15 (+ .cse4 (* 2 (* .cse4 .cse4)))) (< .cse4 (+ (div (+ v_main_~k~0_BEFORE_RETURN_1 (- 2)) 2) 2)) (< 0 .cse4) (= (* 2 .cse4) v_main_~c~0_BEFORE_RETURN_1))) (let ((.cse5 (div (+ (* (- 1) v_main_~c~0_BEFORE_RETURN_1) 1) (- 2)))) (and (= v_main_~y~0_15 (+ (* .cse5 2) 1)) (< .cse5 (+ (div (+ (- 1) v_main_~k~0_BEFORE_RETURN_1) 2) 1)) (= v_main_~x~0_15 (+ (* .cse5 3) (* 2 (* .cse5 .cse5)) 1)) (<= 0 .cse5) (= (mod (+ v_main_~c~0_BEFORE_RETURN_1 1) 2) 0))) (and (= v_main_~x~0_15 0) (= v_main_~y~0_15 0) (= v_main_~c~0_BEFORE_RETURN_1 0)))))) (< main_~c~0 (+ main_~k~0 1)))) [2022-03-20 13:49:34,534 INFO L878 garLoopResultBuilder]: At program point L26-3(lines 26 35) the Hoare annotation is: (or (and (= main_~x~0 0) (= main_~y~0 0)) (and (= (+ (* main_~x~0 2) (* (- 2) main_~y~0)) (+ (- 1) main_~y~0 (let ((.cse0 (+ (- 1) main_~y~0))) (* .cse0 .cse0)))) (< main_~c~0 (+ main_~k~0 1)))) [2022-03-20 13:49:34,535 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 17 39) the Hoare annotation is: true [2022-03-20 13:49:34,535 INFO L885 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: true [2022-03-20 13:49:34,535 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-03-20 13:49:34,535 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-20 13:49:34,535 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-03-20 13:49:34,535 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-03-20 13:49:34,535 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-20 13:49:34,535 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-20 13:49:34,535 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-03-20 13:49:34,535 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2022-03-20 13:49:34,535 INFO L878 garLoopResultBuilder]: At program point L11(lines 11 12) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-03-20 13:49:34,535 INFO L878 garLoopResultBuilder]: At program point L10(lines 10 13) the Hoare annotation is: (and (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) (or (not (= |__VERIFIER_assert_#in~cond| 1)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) [2022-03-20 13:49:34,535 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 9 15) the Hoare annotation is: (or (not (= |__VERIFIER_assert_#in~cond| 1)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2022-03-20 13:49:34,536 INFO L878 garLoopResultBuilder]: At program point L10-2(lines 9 15) the Hoare annotation is: (or (not (= |__VERIFIER_assert_#in~cond| 1)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2022-03-20 13:49:34,536 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-03-20 13:49:34,539 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2022-03-20 13:49:34,540 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 13:49:34,544 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,545 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,545 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,545 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2022-03-20 13:49:34,545 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v___VERIFIER_assert_~cond_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,545 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v___VERIFIER_assert_~cond_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,545 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,546 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,546 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,546 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2022-03-20 13:49:34,546 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v___VERIFIER_assert_~cond_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,546 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v___VERIFIER_assert_~cond_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,546 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,546 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2022-03-20 13:49:34,546 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,546 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,546 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,547 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,547 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~k~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,547 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,547 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,551 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,551 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,551 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,551 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,551 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~k~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,551 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2022-03-20 13:49:34,551 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,551 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,551 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,552 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,552 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,552 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2022-03-20 13:49:34,552 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,552 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,559 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,559 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,559 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,559 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2022-03-20 13:49:34,562 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v___VERIFIER_assert_~cond_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,562 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v___VERIFIER_assert_~cond_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,562 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,562 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,562 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,562 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2022-03-20 13:49:34,562 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v___VERIFIER_assert_~cond_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,562 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v___VERIFIER_assert_~cond_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,562 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,562 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2022-03-20 13:49:34,563 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,563 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,563 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,563 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,563 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~k~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,563 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,563 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,563 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,563 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,563 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,563 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,564 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~k~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,565 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2022-03-20 13:49:34,565 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,567 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,567 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,567 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,567 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,567 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2022-03-20 13:49:34,567 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,568 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 01:49:34 BoogieIcfgContainer [2022-03-20 13:49:34,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 13:49:34,577 INFO L158 Benchmark]: Toolchain (without parser) took 50578.22ms. Allocated memory was 178.3MB in the beginning and 218.1MB in the end (delta: 39.8MB). Free memory was 121.1MB in the beginning and 87.7MB in the end (delta: 33.4MB). Peak memory consumption was 73.0MB. Max. memory is 8.0GB. [2022-03-20 13:49:34,577 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 178.3MB. Free memory is still 137.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 13:49:34,577 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.69ms. Allocated memory was 178.3MB in the beginning and 218.1MB in the end (delta: 39.8MB). Free memory was 120.9MB in the beginning and 189.4MB in the end (delta: -68.5MB). Peak memory consumption was 11.6MB. Max. memory is 8.0GB. [2022-03-20 13:49:34,578 INFO L158 Benchmark]: Boogie Preprocessor took 18.26ms. Allocated memory is still 218.1MB. Free memory was 189.4MB in the beginning and 187.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 13:49:34,578 INFO L158 Benchmark]: RCFGBuilder took 218.31ms. Allocated memory is still 218.1MB. Free memory was 187.9MB in the beginning and 177.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-20 13:49:34,578 INFO L158 Benchmark]: TraceAbstraction took 50138.07ms. Allocated memory is still 218.1MB. Free memory was 177.4MB in the beginning and 87.7MB in the end (delta: 89.6MB). Peak memory consumption was 89.1MB. Max. memory is 8.0GB. [2022-03-20 13:49:34,579 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 178.3MB. Free memory is still 137.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 183.69ms. Allocated memory was 178.3MB in the beginning and 218.1MB in the end (delta: 39.8MB). Free memory was 120.9MB in the beginning and 189.4MB in the end (delta: -68.5MB). Peak memory consumption was 11.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.26ms. Allocated memory is still 218.1MB. Free memory was 189.4MB in the beginning and 187.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 218.31ms. Allocated memory is still 218.1MB. Free memory was 187.9MB in the beginning and 177.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 50138.07ms. Allocated memory is still 218.1MB. Free memory was 177.4MB in the beginning and 87.7MB in the end (delta: 89.6MB). Peak memory consumption was 89.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v___VERIFIER_assert_~cond_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v___VERIFIER_assert_~cond_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v___VERIFIER_assert_~cond_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v___VERIFIER_assert_~cond_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~k~0_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~k~0_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v___VERIFIER_assert_~cond_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v___VERIFIER_assert_~cond_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v___VERIFIER_assert_~cond_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v___VERIFIER_assert_~cond_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~k~0_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~k~0_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] * 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 6 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 50.0s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 17.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 38 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 236 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 12 IncrementalHoareTripleChecker+Unchecked, 173 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 66 IncrementalHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 63 mSDtfsCounter, 66 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 25.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=3, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 57 PreInvPairs, 86 NumberOfFragments, 554 HoareAnnotationTreeSize, 57 FomulaSimplifications, 23 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 21 FomulaSimplificationsInter, 2511 FormulaSimplificationTreeSizeReductionInter, 17.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 - InvariantResult [Line: 26]: Loop Invariant [2022-03-20 13:49:34,588 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,588 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,588 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,588 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2022-03-20 13:49:34,588 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v___VERIFIER_assert_~cond_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,589 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v___VERIFIER_assert_~cond_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,589 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,589 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,589 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,589 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2022-03-20 13:49:34,589 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v___VERIFIER_assert_~cond_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,589 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v___VERIFIER_assert_~cond_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,589 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,589 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2022-03-20 13:49:34,589 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,589 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,590 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,590 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,590 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~k~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,590 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,590 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,590 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,590 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,590 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,590 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,590 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~k~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,590 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2022-03-20 13:49:34,590 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,590 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,591 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,591 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,591 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,591 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2022-03-20 13:49:34,591 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,591 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,592 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,592 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,592 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,592 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2022-03-20 13:49:34,592 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v___VERIFIER_assert_~cond_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,593 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v___VERIFIER_assert_~cond_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,593 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,593 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,593 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,593 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2022-03-20 13:49:34,593 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v___VERIFIER_assert_~cond_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,593 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v___VERIFIER_assert_~cond_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,593 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,593 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2022-03-20 13:49:34,594 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,594 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,594 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,594 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,594 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~k~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,595 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,595 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,595 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,595 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,595 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,595 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,595 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~k~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,595 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2022-03-20 13:49:34,595 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,595 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,595 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,595 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,595 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] [2022-03-20 13:49:34,595 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2022-03-20 13:49:34,596 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2022-03-20 13:49:34,596 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~c~0_BEFORE_RETURN_1,QUANTIFIED] Derived loop invariant: ((x == 0 && c == 0) && y == 0) || ((\exists v_main_~c~0_BEFORE_RETURN_1 : int, v_main_~y~0_15 : int, v_main_~k~0_BEFORE_RETURN_1 : int, v_main_~x~0_15 : int, v___VERIFIER_assert_~cond_BEFORE_RETURN_1 : int :: (((v_main_~y~0_15 + v_main_~y~0_15 * v_main_~y~0_15 == v_main_~x~0_15 * 2 && v___VERIFIER_assert_~cond_BEFORE_RETURN_1 == 1) || (v___VERIFIER_assert_~cond_BEFORE_RETURN_1 == 0 && !(v_main_~y~0_15 + v_main_~y~0_15 * v_main_~y~0_15 == v_main_~x~0_15 * 2))) && ((v___VERIFIER_assert_~cond_BEFORE_RETURN_1 == 1 && x * 2 == y + y * y) || (v___VERIFIER_assert_~cond_BEFORE_RETURN_1 == 0 && !(x * 2 == y + y * y)))) && ((((((v_main_~y~0_15 % 2 == 0 && v_main_~x~0_15 == -1 * v_main_~y~0_15 / -2 + 2 * (-1 * v_main_~y~0_15 / -2 * (-1 * v_main_~y~0_15 / -2))) && -1 * v_main_~y~0_15 / -2 < (v_main_~k~0_BEFORE_RETURN_1 + -2) / 2 + 2) && 0 < -1 * v_main_~y~0_15 / -2) && 2 * (-1 * v_main_~y~0_15 / -2) == v_main_~c~0_BEFORE_RETURN_1) || ((((v_main_~y~0_15 == (-1 * v_main_~c~0_BEFORE_RETURN_1 + 1) / -2 * 2 + 1 && (-1 * v_main_~c~0_BEFORE_RETURN_1 + 1) / -2 < (-1 + v_main_~k~0_BEFORE_RETURN_1) / 2 + 1) && v_main_~x~0_15 == (-1 * v_main_~c~0_BEFORE_RETURN_1 + 1) / -2 * 3 + 2 * ((-1 * v_main_~c~0_BEFORE_RETURN_1 + 1) / -2 * ((-1 * v_main_~c~0_BEFORE_RETURN_1 + 1) / -2)) + 1) && 0 <= (-1 * v_main_~c~0_BEFORE_RETURN_1 + 1) / -2) && (v_main_~c~0_BEFORE_RETURN_1 + 1) % 2 == 0)) || ((v_main_~x~0_15 == 0 && v_main_~y~0_15 == 0) && v_main_~c~0_BEFORE_RETURN_1 == 0))) && c < k + 1) - ProcedureContractResult [Line: 17]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: !(\old(cond) == 1) || \old(cond) == cond RESULT: Ultimate proved your program to be correct! [2022-03-20 13:49:34,757 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...