/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/ps2-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 22:31:43,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 22:31:43,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 22:31:43,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-09 22:31:43,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 22:31:43,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 22:31:43,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 22:31:43,644 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-09 22:31:43,657 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 22:31:43,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 22:31:43,658 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 22:31:43,658 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 22:31:43,658 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 22:31:43,658 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 22:31:43,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 22:31:43,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 22:31:43,659 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 22:31:43,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 22:31:43,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 22:31:43,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 22:31:43,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 22:31:43,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 22:31:43,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 22:31:43,660 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 22:31:43,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 22:31:43,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 22:31:43,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 22:31:43,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 22:31:43,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 22:31:43,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 22:31:43,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 22:31:43,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 22:31:43,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 22:31:43,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 22:31:43,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 22:31:43,661 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 22:31:43,661 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 22:31:43,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 22:31:43,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 22:31:43,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 22:31:43,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 22:31:43,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 22:31:43,863 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 22:31:43,868 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 22:31:43,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/ps2-ll.c [2022-01-09 22:31:43,913 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c39919fc/a2ab2544f1314d5fb07039217007a5a0/FLAGe59be8e8c [2022-01-09 22:31:44,250 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 22:31:44,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/ps2-ll.c [2022-01-09 22:31:44,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c39919fc/a2ab2544f1314d5fb07039217007a5a0/FLAGe59be8e8c [2022-01-09 22:31:44,708 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c39919fc/a2ab2544f1314d5fb07039217007a5a0 [2022-01-09 22:31:44,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 22:31:44,710 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 22:31:44,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 22:31:44,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 22:31:44,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 22:31:44,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:31:44" (1/1) ... [2022-01-09 22:31:44,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36ff5fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:44, skipping insertion in model container [2022-01-09 22:31:44,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:31:44" (1/1) ... [2022-01-09 22:31:44,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 22:31:44,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 22:31:44,868 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] [2022-01-09 22:31:44,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 22:31:44,880 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 22:31:44,887 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] [2022-01-09 22:31:44,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 22:31:44,898 INFO L208 MainTranslator]: Completed translation [2022-01-09 22:31:44,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:44 WrapperNode [2022-01-09 22:31:44,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 22:31:44,899 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 22:31:44,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 22:31:44,899 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 22:31:44,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:44" (1/1) ... [2022-01-09 22:31:44,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:44" (1/1) ... [2022-01-09 22:31:44,919 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 33 [2022-01-09 22:31:44,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 22:31:44,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 22:31:44,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 22:31:44,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 22:31:44,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:44" (1/1) ... [2022-01-09 22:31:44,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:44" (1/1) ... [2022-01-09 22:31:44,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:44" (1/1) ... [2022-01-09 22:31:44,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:44" (1/1) ... [2022-01-09 22:31:44,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:44" (1/1) ... [2022-01-09 22:31:44,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:44" (1/1) ... [2022-01-09 22:31:44,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:44" (1/1) ... [2022-01-09 22:31:44,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 22:31:44,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 22:31:44,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 22:31:44,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 22:31:44,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:44" (1/1) ... [2022-01-09 22:31:44,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 22:31:44,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:31:44,969 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-09 22:31:44,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-09 22:31:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 22:31:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 22:31:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 22:31:45,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 22:31:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-09 22:31:45,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-09 22:31:45,044 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 22:31:45,045 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 22:31:45,119 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 22:31:45,123 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 22:31:45,123 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-09 22:31:45,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:31:45 BoogieIcfgContainer [2022-01-09 22:31:45,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 22:31:45,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 22:31:45,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 22:31:45,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 22:31:45,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:31:44" (1/3) ... [2022-01-09 22:31:45,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115ec2b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:31:45, skipping insertion in model container [2022-01-09 22:31:45,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:44" (2/3) ... [2022-01-09 22:31:45,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115ec2b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:31:45, skipping insertion in model container [2022-01-09 22:31:45,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:31:45" (3/3) ... [2022-01-09 22:31:45,130 INFO L111 eAbstractionObserver]: Analyzing ICFG ps2-ll.c [2022-01-09 22:31:45,134 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 22:31:45,134 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 22:31:45,167 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 22:31:45,173 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-09 22:31:45,173 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 22:31:45,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 22:31:45,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-09 22:31:45,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:31:45,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:31:45,192 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:31:45,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:31:45,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1818803301, now seen corresponding path program 1 times [2022-01-09 22:31:45,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:31:45,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865228830] [2022-01-09 22:31:45,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:31:45,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:31:45,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:31:45,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:31:45,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:31:45,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865228830] [2022-01-09 22:31:45,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865228830] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:31:45,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:31:45,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 22:31:45,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509247840] [2022-01-09 22:31:45,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:31:45,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-09 22:31:45,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:31:45,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-09 22:31:45,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 22:31:45,318 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 22:31:45,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:31:45,329 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2022-01-09 22:31:45,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-09 22:31:45,330 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-01-09 22:31:45,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:31:45,335 INFO L225 Difference]: With dead ends: 30 [2022-01-09 22:31:45,335 INFO L226 Difference]: Without dead ends: 12 [2022-01-09 22:31:45,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 22:31:45,343 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:31:45,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:31:45,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-01-09 22:31:45,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-01-09 22:31:45,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-09 22:31:45,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-01-09 22:31:45,395 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2022-01-09 22:31:45,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:31:45,396 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-01-09 22:31:45,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 22:31:45,396 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-01-09 22:31:45,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-09 22:31:45,397 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:31:45,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:31:45,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-09 22:31:45,398 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:31:45,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:31:45,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1811355551, now seen corresponding path program 1 times [2022-01-09 22:31:45,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:31:45,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051341243] [2022-01-09 22:31:45,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:31:45,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:31:45,436 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 22:31:45,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1661234182] [2022-01-09 22:31:45,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:31:45,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:31:45,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:31:45,452 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 22:31:45,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-09 22:31:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:31:45,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-09 22:31:45,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:31:45,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:31:45,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 22:31:45,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:31:45,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051341243] [2022-01-09 22:31:45,568 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 22:31:45,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661234182] [2022-01-09 22:31:45,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661234182] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:31:45,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:31:45,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-09 22:31:45,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926563290] [2022-01-09 22:31:45,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:31:45,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-09 22:31:45,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:31:45,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-09 22:31:45,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-09 22:31:45,570 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 22:31:45,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:31:45,600 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-01-09 22:31:45,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-09 22:31:45,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-01-09 22:31:45,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:31:45,601 INFO L225 Difference]: With dead ends: 22 [2022-01-09 22:31:45,601 INFO L226 Difference]: Without dead ends: 19 [2022-01-09 22:31:45,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-09 22:31:45,602 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 37 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 [2022-01-09 22:31:45,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 37 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:31:45,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-01-09 22:31:45,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-01-09 22:31:45,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 22:31:45,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-01-09 22:31:45,607 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 7 [2022-01-09 22:31:45,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:31:45,607 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-01-09 22:31:45,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 22:31:45,608 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-01-09 22:31:45,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-09 22:31:45,608 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:31:45,608 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:31:45,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-09 22:31:45,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:31:45,826 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:31:45,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:31:45,827 INFO L85 PathProgramCache]: Analyzing trace with hash 614685336, now seen corresponding path program 1 times [2022-01-09 22:31:45,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:31:45,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064789508] [2022-01-09 22:31:45,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:31:45,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:31:45,834 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 22:31:45,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [805409727] [2022-01-09 22:31:45,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:31:45,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:31:45,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:31:45,854 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 22:31:45,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-09 22:31:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:31:45,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-09 22:31:45,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:31:46,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:31:46,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:31:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-09 22:31:46,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:31:46,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064789508] [2022-01-09 22:31:46,150 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 22:31:46,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805409727] [2022-01-09 22:31:46,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805409727] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-09 22:31:46,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-09 22:31:46,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-01-09 22:31:46,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278617698] [2022-01-09 22:31:46,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:31:46,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-09 22:31:46,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:31:46,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-09 22:31:46,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-09 22:31:46,152 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-09 22:31:46,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:31:46,176 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-01-09 22:31:46,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-09 22:31:46,176 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-01-09 22:31:46,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:31:46,176 INFO L225 Difference]: With dead ends: 19 [2022-01-09 22:31:46,177 INFO L226 Difference]: Without dead ends: 0 [2022-01-09 22:31:46,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-09 22:31:46,180 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 6 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:31:46,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 21 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:31:46,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-09 22:31:46,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-09 22:31:46,184 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) [2022-01-09 22:31:46,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-09 22:31:46,184 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-01-09 22:31:46,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:31:46,184 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-09 22:31:46,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-09 22:31:46,184 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-09 22:31:46,184 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-09 22:31:46,186 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-09 22:31:46,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-09 22:31:46,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-09 22:31:46,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-09 22:31:46,429 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-09 22:31:46,429 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-01-09 22:31:46,429 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-01-09 22:31:46,429 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-09 22:31:46,430 INFO L854 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (= (* 2 |ULTIMATE.start_main_~x~0#1|) (+ |ULTIMATE.start_main_~y~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) [2022-01-09 22:31:46,430 INFO L858 garLoopResultBuilder]: For program point L27-1(lines 26 35) no Hoare annotation was computed. [2022-01-09 22:31:46,430 INFO L854 garLoopResultBuilder]: At program point L26-2(lines 26 35) the Hoare annotation is: (= (* 2 |ULTIMATE.start_main_~x~0#1|) (+ |ULTIMATE.start_main_~y~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) [2022-01-09 22:31:46,430 INFO L854 garLoopResultBuilder]: At program point L26-3(lines 26 35) the Hoare annotation is: (= (* 2 |ULTIMATE.start_main_~x~0#1|) (+ |ULTIMATE.start_main_~y~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) [2022-01-09 22:31:46,430 INFO L861 garLoopResultBuilder]: At program point L38(lines 17 39) the Hoare annotation is: true [2022-01-09 22:31:46,430 INFO L858 garLoopResultBuilder]: For program point L36(line 36) no Hoare annotation was computed. [2022-01-09 22:31:46,430 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2022-01-09 22:31:46,430 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2022-01-09 22:31:46,430 INFO L858 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2022-01-09 22:31:46,430 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2022-01-09 22:31:46,431 INFO L858 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2022-01-09 22:31:46,431 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2022-01-09 22:31:46,433 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-01-09 22:31:46,435 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-09 22:31:46,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 10:31:46 BoogieIcfgContainer [2022-01-09 22:31:46,444 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-09 22:31:46,445 INFO L158 Benchmark]: Toolchain (without parser) took 1734.09ms. Allocated memory was 188.7MB in the beginning and 268.4MB in the end (delta: 79.7MB). Free memory was 135.0MB in the beginning and 176.9MB in the end (delta: -41.9MB). Peak memory consumption was 39.1MB. Max. memory is 8.0GB. [2022-01-09 22:31:46,445 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 151.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-09 22:31:46,445 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.78ms. Allocated memory was 188.7MB in the beginning and 268.4MB in the end (delta: 79.7MB). Free memory was 134.8MB in the beginning and 242.4MB in the end (delta: -107.6MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. [2022-01-09 22:31:46,446 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.14ms. Allocated memory is still 268.4MB. Free memory was 242.4MB in the beginning and 240.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-09 22:31:46,446 INFO L158 Benchmark]: Boogie Preprocessor took 11.19ms. Allocated memory is still 268.4MB. Free memory was 240.8MB in the beginning and 240.3MB in the end (delta: 522.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-09 22:31:46,446 INFO L158 Benchmark]: RCFGBuilder took 179.71ms. Allocated memory is still 268.4MB. Free memory was 239.5MB in the beginning and 229.8MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-09 22:31:46,447 INFO L158 Benchmark]: TraceAbstraction took 1318.50ms. Allocated memory is still 268.4MB. Free memory was 229.3MB in the beginning and 176.9MB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. Max. memory is 8.0GB. [2022-01-09 22:31:46,448 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 151.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 183.78ms. Allocated memory was 188.7MB in the beginning and 268.4MB in the end (delta: 79.7MB). Free memory was 134.8MB in the beginning and 242.4MB in the end (delta: -107.6MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.14ms. Allocated memory is still 268.4MB. Free memory was 242.4MB in the beginning and 240.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 11.19ms. Allocated memory is still 268.4MB. Free memory was 240.8MB in the beginning and 240.3MB in the end (delta: 522.2kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 179.71ms. Allocated memory is still 268.4MB. Free memory was 239.5MB in the beginning and 229.8MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1318.50ms. Allocated memory is still 268.4MB. Free memory was 229.3MB in the beginning and 176.9MB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 75 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27 IncrementalHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 34 mSDtfsCounter, 27 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=2, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 10 PreInvPairs, 17 NumberOfFragments, 29 HoareAnnotationTreeSize, 10 FomulaSimplifications, 34 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 132 SizeOfPredicates, 2 NumberOfNonLiveVariables, 103 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 6/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 2 * x == y + y * y - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-01-09 22:31:46,473 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...