/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/geo1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 14:53:20,829 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-20 14:53:20,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:53:20,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:53:20,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:53:20,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:53:20,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:53:20,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:53:20,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:53:20,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:53:20,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:53:20,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:53:20,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:53:20,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:53:20,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 14:53:20,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 14:53:20,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 14:53:20,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 14:53:20,922 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 [2020-07-20 14:53:20,958 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:53:20,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:53:20,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:53:20,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:53:20,965 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:53:20,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:53:20,966 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:53:20,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:53:20,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:53:20,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:53:20,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:53:20,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:53:20,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:53:20,967 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:53:20,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:53:20,967 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:53:20,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:53:20,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:53:20,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:53:20,969 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:53:20,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:53:20,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:53:20,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:53:20,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:53:20,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:53:20,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:53:20,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:53:20,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:53:20,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:53:20,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 14:53:21,246 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:53:21,265 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:53:21,269 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:53:21,272 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:53:21,273 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:53:21,274 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo1.c [2020-07-20 14:53:21,349 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27095050a/6453a4a5dfd04b6eb60a58257e68ac0b/FLAGfd31745de [2020-07-20 14:53:21,803 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:53:21,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo1.c [2020-07-20 14:53:21,810 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27095050a/6453a4a5dfd04b6eb60a58257e68ac0b/FLAGfd31745de [2020-07-20 14:53:22,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27095050a/6453a4a5dfd04b6eb60a58257e68ac0b [2020-07-20 14:53:22,177 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:53:22,179 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:53:22,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:53:22,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:53:22,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:53:22,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:53:22" (1/1) ... [2020-07-20 14:53:22,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@555a1582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:53:22, skipping insertion in model container [2020-07-20 14:53:22,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:53:22" (1/1) ... [2020-07-20 14:53:22,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:53:22,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:53:22,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:53:22,401 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:53:22,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:53:22,436 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:53:22,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:53:22 WrapperNode [2020-07-20 14:53:22,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:53:22,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:53:22,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:53:22,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:53:22,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:53:22" (1/1) ... [2020-07-20 14:53:22,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:53:22" (1/1) ... [2020-07-20 14:53:22,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:53:22" (1/1) ... [2020-07-20 14:53:22,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:53:22" (1/1) ... [2020-07-20 14:53:22,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:53:22" (1/1) ... [2020-07-20 14:53:22,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:53:22" (1/1) ... [2020-07-20 14:53:22,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:53:22" (1/1) ... [2020-07-20 14:53:22,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:53:22,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:53:22,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:53:22,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:53:22,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:53:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:53:22,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:53:22,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:53:22,626 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 14:53:22,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 14:53:22,626 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:53:22,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:53:22,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 14:53:22,628 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 14:53:22,628 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 14:53:22,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 14:53:22,630 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:53:22,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:53:22,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:53:22,837 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:53:22,838 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 14:53:22,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:53:22 BoogieIcfgContainer [2020-07-20 14:53:22,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:53:22,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:53:22,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:53:22,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:53:22,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:53:22" (1/3) ... [2020-07-20 14:53:22,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4687cb65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:53:22, skipping insertion in model container [2020-07-20 14:53:22,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:53:22" (2/3) ... [2020-07-20 14:53:22,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4687cb65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:53:22, skipping insertion in model container [2020-07-20 14:53:22,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:53:22" (3/3) ... [2020-07-20 14:53:22,850 INFO L109 eAbstractionObserver]: Analyzing ICFG geo1.c [2020-07-20 14:53:22,861 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:53:22,868 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:53:22,881 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:53:22,906 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:53:22,906 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:53:22,906 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:53:22,906 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:53:22,907 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:53:22,907 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:53:22,907 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:53:22,907 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:53:22,926 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-20 14:53:22,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 14:53:22,933 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:53:22,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:53:22,935 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:53:22,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:53:22,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1923958992, now seen corresponding path program 1 times [2020-07-20 14:53:22,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:53:22,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221070549] [2020-07-20 14:53:22,951 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:53:23,034 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:53:23,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:53:23,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 14:53:23,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:53:23,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:53:23,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:53:23,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221070549] [2020-07-20 14:53:23,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:53:23,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:53:23,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035568199] [2020-07-20 14:53:23,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:53:23,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:53:23,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:53:23,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:53:23,236 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2020-07-20 14:53:23,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:53:23,327 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2020-07-20 14:53:23,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 14:53:23,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-20 14:53:23,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:53:23,342 INFO L225 Difference]: With dead ends: 45 [2020-07-20 14:53:23,342 INFO L226 Difference]: Without dead ends: 24 [2020-07-20 14:53:23,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:53:23,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-20 14:53:23,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-07-20 14:53:23,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-20 14:53:23,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-07-20 14:53:23,386 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2020-07-20 14:53:23,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:53:23,386 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-07-20 14:53:23,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:53:23,387 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-07-20 14:53:23,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 14:53:23,388 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:53:23,388 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:53:23,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:53:23,590 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:53:23,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:53:23,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1187633082, now seen corresponding path program 1 times [2020-07-20 14:53:23,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:53:23,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124828987] [2020-07-20 14:53:23,593 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:53:23,635 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:53:23,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:53:23,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 14:53:23,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:53:23,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:53:23,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:53:23,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124828987] [2020-07-20 14:53:23,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:53:23,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 14:53:23,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214799542] [2020-07-20 14:53:23,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 14:53:23,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:53:23,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 14:53:23,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:53:23,729 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2020-07-20 14:53:23,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:53:23,806 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-07-20 14:53:23,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 14:53:23,807 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-07-20 14:53:23,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:53:23,808 INFO L225 Difference]: With dead ends: 31 [2020-07-20 14:53:23,808 INFO L226 Difference]: Without dead ends: 23 [2020-07-20 14:53:23,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:53:23,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-20 14:53:23,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-20 14:53:23,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-20 14:53:23,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-07-20 14:53:23,816 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 17 [2020-07-20 14:53:23,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:53:23,817 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-07-20 14:53:23,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 14:53:23,817 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-07-20 14:53:23,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 14:53:23,818 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:53:23,818 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:53:24,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:53:24,033 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:53:24,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:53:24,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1235596592, now seen corresponding path program 1 times [2020-07-20 14:53:24,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:53:24,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61170076] [2020-07-20 14:53:24,036 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:53:24,071 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:53:24,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:53:24,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 14:53:24,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:53:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:53:24,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:53:24,192 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:53:30,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:53:30,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61170076] [2020-07-20 14:53:30,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:53:30,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-07-20 14:53:30,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935378271] [2020-07-20 14:53:30,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 14:53:30,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:53:30,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 14:53:30,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=38, Unknown=3, NotChecked=0, Total=56 [2020-07-20 14:53:30,471 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 8 states. [2020-07-20 14:53:38,790 WARN L193 SmtUtils]: Spent 4.13 s on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 14:53:48,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:53:48,201 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-07-20 14:53:48,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 14:53:48,202 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-07-20 14:53:48,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:53:48,203 INFO L225 Difference]: With dead ends: 33 [2020-07-20 14:53:48,204 INFO L226 Difference]: Without dead ends: 31 [2020-07-20 14:53:48,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=23, Invalid=63, Unknown=4, NotChecked=0, Total=90 [2020-07-20 14:53:48,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-20 14:53:48,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-07-20 14:53:48,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-20 14:53:48,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-07-20 14:53:48,213 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 17 [2020-07-20 14:53:48,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:53:48,213 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-07-20 14:53:48,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 14:53:48,214 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-07-20 14:53:48,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 14:53:48,215 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:53:48,215 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:53:48,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:53:48,416 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:53:48,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:53:48,417 INFO L82 PathProgramCache]: Analyzing trace with hash -725804614, now seen corresponding path program 1 times [2020-07-20 14:53:48,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:53:48,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558712285] [2020-07-20 14:53:48,419 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:53:48,485 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:53:48,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:53:48,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-20 14:53:48,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:53:54,752 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 14:53:54,839 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:53:54,933 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 14:53:54,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:53:55,015 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:53:57,299 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 14:53:57,312 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-07-20 14:53:57,312 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:53:57,316 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:53:57,375 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 14:53:57,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558712285] [2020-07-20 14:53:57,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:53:57,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2020-07-20 14:53:57,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440984161] [2020-07-20 14:53:57,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-20 14:53:57,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:53:57,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-20 14:53:57,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=172, Unknown=2, NotChecked=0, Total=210 [2020-07-20 14:53:57,378 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 15 states. [2020-07-20 14:54:15,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:54:15,192 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2020-07-20 14:54:15,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 14:54:15,195 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 24 [2020-07-20 14:54:15,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:54:15,195 INFO L225 Difference]: With dead ends: 35 [2020-07-20 14:54:15,196 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 14:54:15,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=56, Invalid=248, Unknown=2, NotChecked=0, Total=306 [2020-07-20 14:54:15,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 14:54:15,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 14:54:15,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 14:54:15,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 14:54:15,198 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-07-20 14:54:15,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:54:15,198 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 14:54:15,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-20 14:54:15,199 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 14:54:15,199 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 14:54:15,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:54:15,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 14:54:15,477 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 14:54:15,478 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:54:15,478 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:54:15,478 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 14:54:15,478 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:54:15,479 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:54:15,479 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 10 12) no Hoare annotation was computed. [2020-07-20 14:54:15,479 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-07-20 14:54:15,479 INFO L268 CegarLoopResult]: For program point L11-2(lines 10 12) no Hoare annotation was computed. [2020-07-20 14:54:15,479 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 10 12) no Hoare annotation was computed. [2020-07-20 14:54:15,479 INFO L271 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-07-20 14:54:15,480 INFO L268 CegarLoopResult]: For program point L31-1(lines 30 40) no Hoare annotation was computed. [2020-07-20 14:54:15,480 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 20 46) the Hoare annotation is: true [2020-07-20 14:54:15,480 INFO L271 CegarLoopResult]: At program point L30-2(lines 30 40) the Hoare annotation is: true [2020-07-20 14:54:15,480 INFO L268 CegarLoopResult]: For program point L30-3(lines 30 40) no Hoare annotation was computed. [2020-07-20 14:54:15,480 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 46) no Hoare annotation was computed. [2020-07-20 14:54:15,480 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 46) no Hoare annotation was computed. [2020-07-20 14:54:15,481 INFO L264 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (= main_~y~0 (+ main_~x~0 1)) [2020-07-20 14:54:15,481 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-07-20 14:54:15,481 INFO L268 CegarLoopResult]: For program point L15(lines 15 16) no Hoare annotation was computed. [2020-07-20 14:54:15,481 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 13 19) the Hoare annotation is: true [2020-07-20 14:54:15,481 INFO L268 CegarLoopResult]: For program point L14(lines 14 17) no Hoare annotation was computed. [2020-07-20 14:54:15,482 INFO L268 CegarLoopResult]: For program point L14-2(lines 13 19) no Hoare annotation was computed. [2020-07-20 14:54:15,482 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 13 19) no Hoare annotation was computed. [2020-07-20 14:54:15,482 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-07-20 14:54:15,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 02:54:15 BoogieIcfgContainer [2020-07-20 14:54:15,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 14:54:15,495 INFO L168 Benchmark]: Toolchain (without parser) took 53316.73 ms. Allocated memory was 137.9 MB in the beginning and 233.8 MB in the end (delta: 95.9 MB). Free memory was 103.0 MB in the beginning and 144.3 MB in the end (delta: -41.3 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. [2020-07-20 14:54:15,496 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 14:54:15,506 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.26 ms. Allocated memory is still 137.9 MB. Free memory was 102.8 MB in the beginning and 93.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-20 14:54:15,509 INFO L168 Benchmark]: Boogie Preprocessor took 33.58 ms. Allocated memory is still 137.9 MB. Free memory was 93.1 MB in the beginning and 91.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-20 14:54:15,510 INFO L168 Benchmark]: RCFGBuilder took 370.57 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 91.5 MB in the beginning and 168.4 MB in the end (delta: -76.9 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-20 14:54:15,515 INFO L168 Benchmark]: TraceAbstraction took 52650.01 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 168.4 MB in the beginning and 144.3 MB in the end (delta: 24.2 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2020-07-20 14:54:15,521 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 257.26 ms. Allocated memory is still 137.9 MB. Free memory was 102.8 MB in the beginning and 93.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.58 ms. Allocated memory is still 137.9 MB. Free memory was 93.1 MB in the beginning and 91.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 370.57 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 91.5 MB in the beginning and 168.4 MB in the end (delta: -76.9 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 52650.01 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 168.4 MB in the beginning and 144.3 MB in the end (delta: 24.2 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 52.4s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 35.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 58 SDtfs, 39 SDslu, 249 SDs, 0 SdLazy, 163 SolverSat, 18 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 28.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 21.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 15 PreInvPairs, 23 NumberOfFragments, 12 HoareAnnotationTreeSize, 15 FomulaSimplifications, 27 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 15.5s InterpolantComputationTime, 68 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 103 ConstructedInterpolants, 1 QuantifiedInterpolants, 7491 SizeOfPredicates, 12 NumberOfNonLiveVariables, 193 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 23/32 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...