/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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/loop-zilu/benchmark10_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-18 01:03:39,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 01:03:39,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 01:03:39,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-18 01:03:39,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 01:03:39,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 01:03:39,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 01:03:39,479 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-18 01:03:39,484 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 01:03:39,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 01:03:39,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 01:03:39,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 01:03:39,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 01:03:39,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 01:03:39,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 01:03:39,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 01:03:39,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 01:03:39,486 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 01:03:39,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 01:03:39,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 01:03:39,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 01:03:39,487 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 01:03:39,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 01:03:39,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 01:03:39,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 01:03:39,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-18 01:03:39,487 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-18 01:03:39,487 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-18 01:03:39,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 01:03:39,488 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-18 01:03:39,488 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 01:03:39,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 01:03:39,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 01:03:39,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 01:03:39,694 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 01:03:39,701 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 01:03:39,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark10_conjunctive.i [2022-03-18 01:03:39,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1857de8eb/f53ba5353fb74fdaa1976d549a9b8851/FLAG71c1f2b1c [2022-03-18 01:03:40,070 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 01:03:40,071 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark10_conjunctive.i [2022-03-18 01:03:40,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1857de8eb/f53ba5353fb74fdaa1976d549a9b8851/FLAG71c1f2b1c [2022-03-18 01:03:40,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1857de8eb/f53ba5353fb74fdaa1976d549a9b8851 [2022-03-18 01:03:40,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 01:03:40,095 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 01:03:40,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 01:03:40,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 01:03:40,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 01:03:40,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 01:03:40" (1/1) ... [2022-03-18 01:03:40,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cf01859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:03:40, skipping insertion in model container [2022-03-18 01:03:40,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 01:03:40" (1/1) ... [2022-03-18 01:03:40,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 01:03:40,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 01:03:40,277 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark10_conjunctive.i[873,886] [2022-03-18 01:03:40,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 01:03:40,293 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 01:03:40,303 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark10_conjunctive.i[873,886] [2022-03-18 01:03:40,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 01:03:40,316 INFO L208 MainTranslator]: Completed translation [2022-03-18 01:03:40,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:03:40 WrapperNode [2022-03-18 01:03:40,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 01:03:40,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 01:03:40,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 01:03:40,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 01:03:40,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:03:40" (1/1) ... [2022-03-18 01:03:40,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:03:40" (1/1) ... [2022-03-18 01:03:40,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:03:40" (1/1) ... [2022-03-18 01:03:40,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:03:40" (1/1) ... [2022-03-18 01:03:40,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:03:40" (1/1) ... [2022-03-18 01:03:40,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:03:40" (1/1) ... [2022-03-18 01:03:40,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:03:40" (1/1) ... [2022-03-18 01:03:40,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 01:03:40,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 01:03:40,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 01:03:40,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 01:03:40,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:03:40" (1/1) ... [2022-03-18 01:03:40,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 01:03:40,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 01:03:40,368 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) [2022-03-18 01:03:40,374 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 [2022-03-18 01:03:40,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 01:03:40,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 01:03:40,394 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 01:03:40,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 01:03:40,395 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 01:03:40,395 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 01:03:40,395 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-18 01:03:40,395 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-18 01:03:40,395 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 01:03:40,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 01:03:40,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 01:03:40,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-03-18 01:03:40,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 01:03:40,396 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 01:03:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 01:03:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 01:03:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 01:03:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 01:03:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 01:03:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 01:03:40,450 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 01:03:40,451 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 01:03:40,585 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 01:03:40,590 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 01:03:40,590 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 01:03:40,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 01:03:40 BoogieIcfgContainer [2022-03-18 01:03:40,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 01:03:40,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 01:03:40,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 01:03:40,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 01:03:40,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 01:03:40" (1/3) ... [2022-03-18 01:03:40,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af66c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 01:03:40, skipping insertion in model container [2022-03-18 01:03:40,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:03:40" (2/3) ... [2022-03-18 01:03:40,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af66c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 01:03:40, skipping insertion in model container [2022-03-18 01:03:40,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 01:03:40" (3/3) ... [2022-03-18 01:03:40,605 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark10_conjunctive.i [2022-03-18 01:03:40,609 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-18 01:03:40,609 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 01:03:40,646 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 01:03:40,653 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 [2022-03-18 01:03:40,653 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 01:03:40,666 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 01:03:40,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-18 01:03:40,674 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 01:03:40,675 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 01:03:40,675 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 01:03:40,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 01:03:40,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1360020621, now seen corresponding path program 1 times [2022-03-18 01:03:40,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 01:03:40,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [728568864] [2022-03-18 01:03:40,699 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 01:03:40,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1360020621, now seen corresponding path program 2 times [2022-03-18 01:03:40,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 01:03:40,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579964389] [2022-03-18 01:03:40,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 01:03:40,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 01:03:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 01:03:40,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 01:03:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 01:03:40,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 01:03:40,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 01:03:40,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579964389] [2022-03-18 01:03:40,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579964389] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 01:03:40,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 01:03:40,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 01:03:40,871 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 01:03:40,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [728568864] [2022-03-18 01:03:40,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [728568864] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 01:03:40,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 01:03:40,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 01:03:40,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420315272] [2022-03-18 01:03:40,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 01:03:40,876 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-18 01:03:40,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 01:03:40,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-18 01:03:40,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-18 01:03:40,900 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-03-18 01:03:40,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 01:03:40,982 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2022-03-18 01:03:40,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-18 01:03:40,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 12 [2022-03-18 01:03:40,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 01:03:40,988 INFO L225 Difference]: With dead ends: 38 [2022-03-18 01:03:40,988 INFO L226 Difference]: Without dead ends: 16 [2022-03-18 01:03:40,990 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-18 01:03:40,992 INFO L912 BasicCegarLoop]: 23 mSDtfsCounter, 17 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 01:03:40,993 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 32 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 01:03:41,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-03-18 01:03:41,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2022-03-18 01:03:41,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 01:03:41,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-03-18 01:03:41,014 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2022-03-18 01:03:41,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 01:03:41,015 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-03-18 01:03:41,015 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-03-18 01:03:41,015 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-03-18 01:03:41,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-18 01:03:41,015 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 01:03:41,016 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 01:03:41,016 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 01:03:41,016 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 01:03:41,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 01:03:41,016 INFO L85 PathProgramCache]: Analyzing trace with hash 824422544, now seen corresponding path program 1 times [2022-03-18 01:03:41,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 01:03:41,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [453392223] [2022-03-18 01:03:41,017 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 01:03:41,017 INFO L85 PathProgramCache]: Analyzing trace with hash 824422544, now seen corresponding path program 2 times [2022-03-18 01:03:41,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 01:03:41,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521021291] [2022-03-18 01:03:41,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 01:03:41,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 01:03:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 01:03:41,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 01:03:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 01:03:41,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 01:03:41,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 01:03:41,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521021291] [2022-03-18 01:03:41,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521021291] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 01:03:41,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 01:03:41,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 01:03:41,092 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 01:03:41,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [453392223] [2022-03-18 01:03:41,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [453392223] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 01:03:41,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 01:03:41,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 01:03:41,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038641613] [2022-03-18 01:03:41,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 01:03:41,093 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 01:03:41,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 01:03:41,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 01:03:41,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-18 01:03:41,094 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-03-18 01:03:41,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 01:03:41,158 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-03-18 01:03:41,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 01:03:41,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 13 [2022-03-18 01:03:41,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 01:03:41,159 INFO L225 Difference]: With dead ends: 20 [2022-03-18 01:03:41,159 INFO L226 Difference]: Without dead ends: 15 [2022-03-18 01:03:41,159 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-18 01:03:41,160 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 01:03:41,160 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 23 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 01:03:41,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-03-18 01:03:41,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-03-18 01:03:41,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 01:03:41,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-03-18 01:03:41,165 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2022-03-18 01:03:41,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 01:03:41,165 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-03-18 01:03:41,165 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-03-18 01:03:41,165 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-03-18 01:03:41,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-18 01:03:41,165 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 01:03:41,166 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 01:03:41,166 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 01:03:41,166 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 01:03:41,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 01:03:41,166 INFO L85 PathProgramCache]: Analyzing trace with hash -181933682, now seen corresponding path program 1 times [2022-03-18 01:03:41,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 01:03:41,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1607961973] [2022-03-18 01:03:41,526 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-18 01:03:41,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1825519308, now seen corresponding path program 1 times [2022-03-18 01:03:41,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 01:03:41,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705307240] [2022-03-18 01:03:41,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 01:03:41,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 01:03:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 01:03:41,538 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-18 01:03:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 01:03:41,563 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-18 01:03:41,563 INFO L85 PathProgramCache]: Analyzing trace with hash -181933682, now seen corresponding path program 2 times [2022-03-18 01:03:41,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 01:03:41,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056590034] [2022-03-18 01:03:41,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 01:03:41,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 01:03:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 01:03:41,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 01:03:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 01:03:41,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 01:03:41,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 01:03:41,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056590034] [2022-03-18 01:03:41,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056590034] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 01:03:41,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694461835] [2022-03-18 01:03:41,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 01:03:41,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 01:03:41,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 01:03:41,628 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) [2022-03-18 01:03:41,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 01:03:41,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 01:03:41,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 01:03:41,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-18 01:03:41,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 01:03:41,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 01:03:41,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 01:03:41,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 01:03:41,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694461835] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 01:03:41,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 01:03:41,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 10 [2022-03-18 01:03:41,872 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 01:03:41,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1607961973] [2022-03-18 01:03:41,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1607961973] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 01:03:41,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 01:03:41,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 01:03:41,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242638852] [2022-03-18 01:03:41,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 01:03:41,873 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 01:03:41,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 01:03:41,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 01:03:41,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-03-18 01:03:41,874 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-03-18 01:03:41,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 01:03:41,903 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-03-18 01:03:41,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 01:03:41,904 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 14 [2022-03-18 01:03:41,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 01:03:41,904 INFO L225 Difference]: With dead ends: 22 [2022-03-18 01:03:41,904 INFO L226 Difference]: Without dead ends: 17 [2022-03-18 01:03:41,905 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-03-18 01:03:41,905 INFO L912 BasicCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 01:03:41,906 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 19 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 01:03:41,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-03-18 01:03:41,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-03-18 01:03:41,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 01:03:41,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-03-18 01:03:41,909 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2022-03-18 01:03:41,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 01:03:41,909 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-03-18 01:03:41,909 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-03-18 01:03:41,909 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-03-18 01:03:41,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-18 01:03:41,910 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 01:03:41,910 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 01:03:41,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-18 01:03:42,123 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 01:03:42,124 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 01:03:42,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 01:03:42,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1911751447, now seen corresponding path program 3 times [2022-03-18 01:03:42,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 01:03:42,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [449432909] [2022-03-18 01:03:44,443 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-18 01:03:44,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1884624652, now seen corresponding path program 1 times [2022-03-18 01:03:44,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 01:03:44,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422462741] [2022-03-18 01:03:44,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 01:03:44,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 01:03:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 01:03:44,450 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-18 01:03:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 01:03:44,465 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-18 01:03:44,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1911751447, now seen corresponding path program 4 times [2022-03-18 01:03:44,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 01:03:44,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055476658] [2022-03-18 01:03:44,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 01:03:44,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 01:03:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 01:03:44,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 01:03:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 01:03:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 01:03:44,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 01:03:44,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055476658] [2022-03-18 01:03:44,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055476658] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 01:03:44,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136439835] [2022-03-18 01:03:44,540 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 01:03:44,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 01:03:44,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 01:03:44,544 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) [2022-03-18 01:03:44,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 01:03:44,577 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 01:03:44,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 01:03:44,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-18 01:03:44,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 01:03:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 01:03:44,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 01:03:44,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 01:03:44,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136439835] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 01:03:44,736 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 01:03:44,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2022-03-18 01:03:44,736 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 01:03:44,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [449432909] [2022-03-18 01:03:44,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [449432909] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 01:03:44,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 01:03:44,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 01:03:44,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385116104] [2022-03-18 01:03:44,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 01:03:44,737 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 01:03:44,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 01:03:44,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 01:03:44,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-03-18 01:03:44,738 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 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) [2022-03-18 01:03:44,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 01:03:44,813 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-03-18 01:03:44,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 01:03:44,813 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 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 16 [2022-03-18 01:03:44,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 01:03:44,814 INFO L225 Difference]: With dead ends: 17 [2022-03-18 01:03:44,814 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 01:03:44,814 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-03-18 01:03:44,815 INFO L912 BasicCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 01:03:44,815 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 37 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 01:03:44,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 01:03:44,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 01:03:44,816 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) [2022-03-18 01:03:44,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 01:03:44,816 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2022-03-18 01:03:44,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 01:03:44,816 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 01:03:44,816 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 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) [2022-03-18 01:03:44,816 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 01:03:44,816 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 01:03:44,818 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 01:03:44,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 01:03:45,035 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-03-18 01:03:45,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-18 01:03:45,119 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 11) no Hoare annotation was computed. [2022-03-18 01:03:45,119 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 11) no Hoare annotation was computed. [2022-03-18 01:03:45,119 INFO L882 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2022-03-18 01:03:45,120 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 19 30) the Hoare annotation is: true [2022-03-18 01:03:45,120 INFO L885 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: true [2022-03-18 01:03:45,120 INFO L878 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (<= 1 main_~i~0))) (or (and (<= main_~i~0 1) (<= 0 main_~c~0) .cse0) (and (<= 1 main_~c~0) .cse0))) [2022-03-18 01:03:45,121 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 19 30) the Hoare annotation is: true [2022-03-18 01:03:45,121 INFO L885 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-03-18 01:03:45,121 INFO L878 garLoopResultBuilder]: At program point L23-2(lines 23 27) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~c~0)) (.cse1 (<= 1 main_~i~0))) (or (and (<= main_~i~0 0) (<= 0 main_~i~0) (<= 0 .cse0)) (and (<= main_~i~0 1) (<= 1 .cse0) .cse1) (and (<= 1 main_~c~0) .cse1))) [2022-03-18 01:03:45,121 INFO L878 garLoopResultBuilder]: At program point L23-3(lines 23 27) the Hoare annotation is: (and (<= 1 main_~c~0) (<= 1 main_~i~0)) [2022-03-18 01:03:45,121 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 19 30) the Hoare annotation is: true [2022-03-18 01:03:45,121 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-03-18 01:03:45,121 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|)) [2022-03-18 01:03:45,122 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-03-18 01:03:45,122 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-03-18 01:03:45,122 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-18 01:03:45,122 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-18 01:03:45,122 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-03-18 01:03:45,122 INFO L878 garLoopResultBuilder]: At program point L16(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-03-18 01:03:45,122 INFO L878 garLoopResultBuilder]: At program point L15(lines 15 17) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-03-18 01:03:45,122 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 18) the Hoare annotation is: true [2022-03-18 01:03:45,122 INFO L885 garLoopResultBuilder]: At program point L15-2(lines 14 18) the Hoare annotation is: true [2022-03-18 01:03:45,124 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 14 18) the Hoare annotation is: true [2022-03-18 01:03:45,124 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-03-18 01:03:45,128 INFO L718 BasicCegarLoop]: Path program histogram: [4, 2, 2, 1, 1] [2022-03-18 01:03:45,129 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 01:03:45,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 01:03:45 BoogieIcfgContainer [2022-03-18 01:03:45,141 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 01:03:45,141 INFO L158 Benchmark]: Toolchain (without parser) took 5046.59ms. Allocated memory was 186.6MB in the beginning and 224.4MB in the end (delta: 37.7MB). Free memory was 133.0MB in the beginning and 125.1MB in the end (delta: 7.9MB). Peak memory consumption was 46.6MB. Max. memory is 8.0GB. [2022-03-18 01:03:45,141 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 186.6MB. Free memory is still 149.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 01:03:45,142 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.28ms. Allocated memory is still 186.6MB. Free memory was 132.9MB in the beginning and 158.2MB in the end (delta: -25.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-18 01:03:45,142 INFO L158 Benchmark]: Boogie Preprocessor took 26.81ms. Allocated memory is still 186.6MB. Free memory was 158.2MB in the beginning and 156.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 01:03:45,142 INFO L158 Benchmark]: RCFGBuilder took 246.07ms. Allocated memory is still 186.6MB. Free memory was 156.8MB in the beginning and 147.3MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-18 01:03:45,142 INFO L158 Benchmark]: TraceAbstraction took 4548.55ms. Allocated memory was 186.6MB in the beginning and 224.4MB in the end (delta: 37.7MB). Free memory was 146.7MB in the beginning and 125.1MB in the end (delta: 21.6MB). Peak memory consumption was 59.7MB. Max. memory is 8.0GB. [2022-03-18 01:03:45,143 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 186.6MB. Free memory is still 149.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 221.28ms. Allocated memory is still 186.6MB. Free memory was 132.9MB in the beginning and 158.2MB in the end (delta: -25.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.81ms. Allocated memory is still 186.6MB. Free memory was 158.2MB in the beginning and 156.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 246.07ms. Allocated memory is still 186.6MB. Free memory was 156.8MB in the beginning and 147.3MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 4548.55ms. Allocated memory was 186.6MB in the beginning and 224.4MB in the end (delta: 37.7MB). Free memory was 146.7MB in the beginning and 125.1MB in the end (delta: 21.6MB). Peak memory consumption was 59.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: 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 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.5s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 45 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 44 mSDsluCounter, 111 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 55 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 93 IncrementalHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 56 mSDtfsCounter, 93 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 56 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 39 PreInvPairs, 57 NumberOfFragments, 92 HoareAnnotationTreeSize, 39 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 21 FomulaSimplificationsInter, 21 FormulaSimplificationTreeSizeReductionInter, 0.1s 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: 23]: Loop Invariant Derived loop invariant: (((i <= 0 && 0 <= i) && 0 <= i + c) || ((i <= 1 && 1 <= i + c) && 1 <= i)) || (1 <= c && 1 <= i) - ProcedureContractResult [Line: 19]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 RESULT: Ultimate proved your program to be correct! [2022-03-18 01:03:45,158 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...