/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 00:54:42,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 00:54:42,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 00:54:42,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 00:54:42,725 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-03-20 00:54:42,745 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 00:54:42,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 00:54:42,745 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-20 00:54:42,746 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-20 00:54:42,746 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 00:54:42,746 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 00:54:42,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 00:54:42,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 00:54:42,747 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 00:54:42,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 00:54:42,747 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 00:54:42,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 00:54:42,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 00:54:42,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 00:54:42,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 00:54:42,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 00:54:42,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 00:54:42,748 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 00:54:42,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 00:54:42,748 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 00:54:42,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 00:54:42,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 00:54:42,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 00:54:42,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 00:54:42,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 00:54:42,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 00:54:42,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 00:54:42,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 00:54:42,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 00:54:42,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 00:54:42,750 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-20 00:54:42,750 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-20 00:54:42,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 00:54:42,750 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 00:54:42,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 00:54:42,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 00:54:42,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 00:54:42,919 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 00:54:42,923 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 00:54:42,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound1.c [2022-03-20 00:54:42,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fb48273e/d2d6b45d8ae14b60be2d539828995320/FLAG55a462242 [2022-03-20 00:54:43,322 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 00:54:43,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound1.c [2022-03-20 00:54:43,327 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fb48273e/d2d6b45d8ae14b60be2d539828995320/FLAG55a462242 [2022-03-20 00:54:43,336 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fb48273e/d2d6b45d8ae14b60be2d539828995320 [2022-03-20 00:54:43,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 00:54:43,338 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 00:54:43,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 00:54:43,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 00:54:43,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 00:54:43,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 12:54:43" (1/1) ... [2022-03-20 00:54:43,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@544918ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:54:43, skipping insertion in model container [2022-03-20 00:54:43,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 12:54:43" (1/1) ... [2022-03-20 00:54:43,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 00:54:43,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 00:54:43,473 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound1.c[524,537] [2022-03-20 00:54:43,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 00:54:43,518 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 00:54:43,527 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound1.c[524,537] [2022-03-20 00:54:43,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 00:54:43,544 INFO L208 MainTranslator]: Completed translation [2022-03-20 00:54:43,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:54:43 WrapperNode [2022-03-20 00:54:43,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 00:54:43,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 00:54:43,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 00:54:43,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 00:54:43,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:54:43" (1/1) ... [2022-03-20 00:54:43,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:54:43" (1/1) ... [2022-03-20 00:54:43,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:54:43" (1/1) ... [2022-03-20 00:54:43,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:54:43" (1/1) ... [2022-03-20 00:54:43,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:54:43" (1/1) ... [2022-03-20 00:54:43,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:54:43" (1/1) ... [2022-03-20 00:54:43,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:54:43" (1/1) ... [2022-03-20 00:54:43,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 00:54:43,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 00:54:43,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 00:54:43,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 00:54:43,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:54:43" (1/1) ... [2022-03-20 00:54:43,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 00:54:43,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:54:43,639 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 00:54:43,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 00:54:43,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 00:54:43,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 00:54:43,694 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 00:54:43,694 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 00:54:43,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 00:54:43,694 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 00:54:43,694 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 00:54:43,694 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 00:54:43,694 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 00:54:43,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 00:54:43,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 00:54:43,694 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 00:54:43,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 00:54:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 00:54:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 00:54:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 00:54:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 00:54:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 00:54:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 00:54:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 00:54:43,735 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 00:54:43,736 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 00:54:43,830 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 00:54:43,834 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 00:54:43,834 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 00:54:43,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 12:54:43 BoogieIcfgContainer [2022-03-20 00:54:43,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 00:54:43,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 00:54:43,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 00:54:43,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 00:54:43,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 12:54:43" (1/3) ... [2022-03-20 00:54:43,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@299ca9d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 12:54:43, skipping insertion in model container [2022-03-20 00:54:43,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:54:43" (2/3) ... [2022-03-20 00:54:43,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@299ca9d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 12:54:43, skipping insertion in model container [2022-03-20 00:54:43,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 12:54:43" (3/3) ... [2022-03-20 00:54:43,840 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_valuebound1.c [2022-03-20 00:54:43,843 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 00:54:43,843 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 00:54:43,871 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 00:54:43,880 INFO L340 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 [2022-03-20 00:54:43,880 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 00:54:43,899 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-20 00:54:43,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-20 00:54:43,903 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:54:43,905 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:54:43,905 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:54:43,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:54:43,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1790211013, now seen corresponding path program 1 times [2022-03-20 00:54:43,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:54:43,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475846910] [2022-03-20 00:54:43,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:54:43,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:54:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:54:44,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 00:54:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:54:44,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 00:54:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:54:44,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 00:54:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:54:44,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 00:54:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:54:44,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-20 00:54:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:54:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-20 00:54:44,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:54:44,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475846910] [2022-03-20 00:54:44,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475846910] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 00:54:44,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 00:54:44,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 00:54:44,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021350394] [2022-03-20 00:54:44,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 00:54:44,049 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 00:54:44,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:54:44,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 00:54:44,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 00:54:44,068 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 00:54:44,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:54:44,122 INFO L93 Difference]: Finished difference Result 57 states and 80 transitions. [2022-03-20 00:54:44,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 00:54:44,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-03-20 00:54:44,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:54:44,132 INFO L225 Difference]: With dead ends: 57 [2022-03-20 00:54:44,132 INFO L226 Difference]: Without dead ends: 27 [2022-03-20 00:54:44,134 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 00:54:44,136 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 00:54:44,137 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 34 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 00:54:44,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-03-20 00:54:44,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-03-20 00:54:44,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-20 00:54:44,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-03-20 00:54:44,160 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 33 [2022-03-20 00:54:44,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:54:44,160 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-03-20 00:54:44,161 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 00:54:44,161 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-03-20 00:54:44,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-20 00:54:44,162 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:54:44,162 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:54:44,162 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 00:54:44,162 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:54:44,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:54:44,163 INFO L85 PathProgramCache]: Analyzing trace with hash -102231875, now seen corresponding path program 1 times [2022-03-20 00:54:44,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:54:44,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957686708] [2022-03-20 00:54:44,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:54:44,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:54:44,179 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:54:44,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337239427] [2022-03-20 00:54:44,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:54:44,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:54:44,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:54:44,181 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 00:54:44,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 00:54:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:54:44,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-20 00:54:44,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:54:44,606 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-20 00:54:44,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:54:44,736 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-20 00:54:44,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:54:44,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957686708] [2022-03-20 00:54:44,737 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:54:44,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337239427] [2022-03-20 00:54:44,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337239427] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-20 00:54:44,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 00:54:44,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2022-03-20 00:54:44,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242526103] [2022-03-20 00:54:44,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 00:54:44,746 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 00:54:44,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:54:44,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 00:54:44,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-03-20 00:54:44,749 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 00:54:44,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:54:44,844 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-03-20 00:54:44,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 00:54:44,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2022-03-20 00:54:44,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:54:44,845 INFO L225 Difference]: With dead ends: 33 [2022-03-20 00:54:44,845 INFO L226 Difference]: Without dead ends: 29 [2022-03-20 00:54:44,846 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-03-20 00:54:44,846 INFO L913 BasicCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 00:54:44,847 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 95 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 00:54:44,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-03-20 00:54:44,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-03-20 00:54:44,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 8 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-20 00:54:44,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-03-20 00:54:44,852 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 33 [2022-03-20 00:54:44,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:54:44,853 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-03-20 00:54:44,853 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 00:54:44,853 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-03-20 00:54:44,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-20 00:54:44,854 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:54:44,854 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:54:44,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-20 00:54:45,070 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:54:45,071 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:54:45,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:54:45,072 INFO L85 PathProgramCache]: Analyzing trace with hash -453872510, now seen corresponding path program 1 times [2022-03-20 00:54:45,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:54:45,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029777970] [2022-03-20 00:54:45,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:54:45,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:54:45,082 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:54:45,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1466144508] [2022-03-20 00:54:45,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:54:45,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:54:45,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:54:45,088 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 00:54:45,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 00:54:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:54:45,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-20 00:54:45,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:54:45,269 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-20 00:54:45,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:54:45,441 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-20 00:54:45,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:54:45,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029777970] [2022-03-20 00:54:45,444 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:54:45,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466144508] [2022-03-20 00:54:45,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466144508] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 00:54:45,444 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 00:54:45,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-03-20 00:54:45,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748608578] [2022-03-20 00:54:45,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 00:54:45,445 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 00:54:45,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:54:45,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 00:54:45,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-20 00:54:45,446 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-20 00:54:45,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:54:45,505 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-03-20 00:54:45,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 00:54:45,505 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 39 [2022-03-20 00:54:45,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:54:45,506 INFO L225 Difference]: With dead ends: 29 [2022-03-20 00:54:45,506 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 00:54:45,507 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-20 00:54:45,509 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 13 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 00:54:45,510 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 126 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 00:54:45,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 00:54:45,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 00:54:45,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-20 00:54:45,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 00:54:45,512 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2022-03-20 00:54:45,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:54:45,512 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 00:54:45,512 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-20 00:54:45,512 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 00:54:45,512 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 00:54:45,514 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 00:54:45,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-20 00:54:45,719 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-20 00:54:45,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-20 00:54:45,744 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 5) no Hoare annotation was computed. [2022-03-20 00:54:45,745 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 5) no Hoare annotation was computed. [2022-03-20 00:54:45,745 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 5) no Hoare annotation was computed. [2022-03-20 00:54:45,745 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2022-03-20 00:54:45,745 INFO L882 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2022-03-20 00:54:45,745 INFO L882 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2022-03-20 00:54:45,745 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2022-03-20 00:54:45,745 INFO L878 garLoopResultBuilder]: At program point L35-2(lines 35 46) the Hoare annotation is: (let ((.cse0 (+ (* main_~v~0 2) (* main_~u~0 main_~u~0))) (.cse1 (* main_~v~0 main_~v~0)) (.cse2 (* main_~u~0 2)) (.cse3 (* main_~A~0 4))) (and (= .cse0 (+ .cse1 .cse2 .cse3 (* main_~r~0 4))) (= .cse0 (+ .cse1 .cse2 .cse3)))) [2022-03-20 00:54:45,745 INFO L882 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-03-20 00:54:45,745 INFO L885 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2022-03-20 00:54:45,745 INFO L885 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2022-03-20 00:54:45,746 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 19 51) no Hoare annotation was computed. [2022-03-20 00:54:45,746 INFO L885 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: true [2022-03-20 00:54:45,746 INFO L885 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2022-03-20 00:54:45,746 INFO L882 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2022-03-20 00:54:45,746 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 19 51) no Hoare annotation was computed. [2022-03-20 00:54:45,746 INFO L878 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4) (* main_~r~0 4))) [2022-03-20 00:54:45,746 INFO L882 garLoopResultBuilder]: For program point L36-1(lines 35 46) no Hoare annotation was computed. [2022-03-20 00:54:45,746 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 19 51) the Hoare annotation is: true [2022-03-20 00:54:45,746 INFO L882 garLoopResultBuilder]: For program point L49(line 49) no Hoare annotation was computed. [2022-03-20 00:54:45,746 INFO L882 garLoopResultBuilder]: For program point L39(lines 39 45) no Hoare annotation was computed. [2022-03-20 00:54:45,746 INFO L878 garLoopResultBuilder]: At program point L39-2(lines 35 46) the Hoare annotation is: (= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4) (* main_~r~0 4))) [2022-03-20 00:54:45,746 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-20 00:54:45,746 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-20 00:54:45,747 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-20 00:54:45,747 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-20 00:54:45,747 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-20 00:54:45,747 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-20 00:54:45,747 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-20 00:54:45,747 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2022-03-20 00:54:45,747 INFO L882 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2022-03-20 00:54:45,747 INFO L882 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2022-03-20 00:54:45,747 INFO L882 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2022-03-20 00:54:45,747 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2022-03-20 00:54:45,747 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2022-03-20 00:54:45,750 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-20 00:54:45,750 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 00:54:45,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 12:54:45 BoogieIcfgContainer [2022-03-20 00:54:45,759 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 00:54:45,760 INFO L158 Benchmark]: Toolchain (without parser) took 2421.23ms. Allocated memory was 175.1MB in the beginning and 257.9MB in the end (delta: 82.8MB). Free memory was 118.8MB in the beginning and 96.7MB in the end (delta: 22.2MB). Peak memory consumption was 105.2MB. Max. memory is 8.0GB. [2022-03-20 00:54:45,760 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 175.1MB. Free memory was 135.4MB in the beginning and 135.3MB in the end (delta: 136.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 00:54:45,760 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.73ms. Allocated memory was 175.1MB in the beginning and 257.9MB in the end (delta: 82.8MB). Free memory was 118.7MB in the beginning and 230.8MB in the end (delta: -112.1MB). Peak memory consumption was 17.2MB. Max. memory is 8.0GB. [2022-03-20 00:54:45,760 INFO L158 Benchmark]: Boogie Preprocessor took 31.34ms. Allocated memory is still 257.9MB. Free memory was 230.8MB in the beginning and 229.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 00:54:45,761 INFO L158 Benchmark]: RCFGBuilder took 254.01ms. Allocated memory is still 257.9MB. Free memory was 229.3MB in the beginning and 218.3MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-20 00:54:45,761 INFO L158 Benchmark]: TraceAbstraction took 1923.38ms. Allocated memory is still 257.9MB. Free memory was 217.8MB in the beginning and 96.7MB in the end (delta: 121.1MB). Peak memory consumption was 121.6MB. Max. memory is 8.0GB. [2022-03-20 00:54:45,762 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 175.1MB. Free memory was 135.4MB in the beginning and 135.3MB in the end (delta: 136.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 208.73ms. Allocated memory was 175.1MB in the beginning and 257.9MB in the end (delta: 82.8MB). Free memory was 118.7MB in the beginning and 230.8MB in the end (delta: -112.1MB). Peak memory consumption was 17.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.34ms. Allocated memory is still 257.9MB. Free memory was 230.8MB in the beginning and 229.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 254.01ms. Allocated memory is still 257.9MB. Free memory was 229.3MB in the beginning and 218.3MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1923.38ms. Allocated memory is still 257.9MB. Free memory was 217.8MB in the beginning and 96.7MB in the end (delta: 121.1MB). Peak memory consumption was 121.6MB. 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: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 45 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 38 mSDsluCounter, 255 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 176 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 68 IncrementalHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 79 mSDtfsCounter, 68 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 14, 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, 13 LocationsWithAnnotation, 22 PreInvPairs, 28 NumberOfFragments, 98 HoareAnnotationTreeSize, 22 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 172 ConstructedInterpolants, 0 QuantifiedInterpolants, 533 SizeOfPredicates, 12 NumberOfNonLiveVariables, 209 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 113/124 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: 35]: Loop Invariant Derived loop invariant: v * 2 + u * u == v * v + u * 2 + A * 4 + r * 4 RESULT: Ultimate proved your program to be correct! [2022-03-20 00:54:45,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...