/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/loop-crafted/simple_vardep_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 14:29:15,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 14:29:15,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 14:29:15,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-20 14:29:15,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:29:15,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:29:15,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:29:15,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:29:15,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:29:15,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:29:15,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:29:15,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:29:15,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:29:15,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:29:15,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:29:15,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:29:15,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 14:29:15,990 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 14:29:16,019 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:29:16,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:29:16,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:29:16,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:29:16,022 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:29:16,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:29:16,023 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:29:16,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:29:16,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:29:16,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:29:16,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:29:16,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:29:16,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:29:16,025 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:29:16,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:29:16,025 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:29:16,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:29:16,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:29:16,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:29:16,026 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:29:16,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:29:16,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:29:16,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:29:16,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:29:16,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:29:16,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:29:16,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:16,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:29:16,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:29:16,028 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 14:29:16,323 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:29:16,337 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:29:16,342 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:29:16,344 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:29:16,344 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:29:16,345 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_vardep_1.c [2020-07-20 14:29:16,425 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27e7b9de5/9e45d5807e2e42eca4ba4132657a06f6/FLAG0515464ba [2020-07-20 14:29:16,924 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:29:16,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_vardep_1.c [2020-07-20 14:29:16,935 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27e7b9de5/9e45d5807e2e42eca4ba4132657a06f6/FLAG0515464ba [2020-07-20 14:29:17,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27e7b9de5/9e45d5807e2e42eca4ba4132657a06f6 [2020-07-20 14:29:17,333 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:29:17,336 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:29:17,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:29:17,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:29:17,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:29:17,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:29:17" (1/1) ... [2020-07-20 14:29:17,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55fc409a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:17, skipping insertion in model container [2020-07-20 14:29:17,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:29:17" (1/1) ... [2020-07-20 14:29:17,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:29:17,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:29:17,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:29:17,550 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:29:17,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:29:17,585 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:29:17,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:17 WrapperNode [2020-07-20 14:29:17,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:29:17,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:29:17,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:29:17,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:29:17,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:17" (1/1) ... [2020-07-20 14:29:17,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:17" (1/1) ... [2020-07-20 14:29:17,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:17" (1/1) ... [2020-07-20 14:29:17,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:17" (1/1) ... [2020-07-20 14:29:17,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:17" (1/1) ... [2020-07-20 14:29:17,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:17" (1/1) ... [2020-07-20 14:29:17,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:17" (1/1) ... [2020-07-20 14:29:17,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:29:17,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:29:17,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:29:17,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:29:17,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:17" (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 14:29:17,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:29:17,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:29:17,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 14:29:17,768 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:29:17,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:29:17,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 14:29:17,769 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:29:17,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:29:17,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:29:17,933 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:29:17,934 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 14:29:17,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:29:17 BoogieIcfgContainer [2020-07-20 14:29:17,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:29:17,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:29:17,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:29:17,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:29:17,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:29:17" (1/3) ... [2020-07-20 14:29:17,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79accb1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:29:17, skipping insertion in model container [2020-07-20 14:29:17,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:17" (2/3) ... [2020-07-20 14:29:17,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79accb1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:29:17, skipping insertion in model container [2020-07-20 14:29:17,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:29:17" (3/3) ... [2020-07-20 14:29:17,946 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_vardep_1.c [2020-07-20 14:29:17,957 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:29:17,965 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:29:17,979 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:29:18,004 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:29:18,005 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:29:18,005 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:29:18,005 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:29:18,005 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:29:18,005 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:29:18,006 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:29:18,006 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:29:18,025 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-07-20 14:29:18,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 14:29:18,031 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:18,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:18,033 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:18,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:18,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1847991872, now seen corresponding path program 1 times [2020-07-20 14:29:18,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:18,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182770075] [2020-07-20 14:29:18,049 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 14:29:18,114 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:29:18,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:18,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 14:29:18,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:18,242 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 14:29:18,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:29:18,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182770075] [2020-07-20 14:29:18,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:29:18,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 14:29:18,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241137700] [2020-07-20 14:29:18,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 14:29:18,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:18,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 14:29:18,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:29:18,281 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 6 states. [2020-07-20 14:29:18,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:18,393 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2020-07-20 14:29:18,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 14:29:18,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-07-20 14:29:18,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:18,404 INFO L225 Difference]: With dead ends: 36 [2020-07-20 14:29:18,405 INFO L226 Difference]: Without dead ends: 20 [2020-07-20 14:29:18,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 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 14:29:18,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-20 14:29:18,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-07-20 14:29:18,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-20 14:29:18,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-07-20 14:29:18,454 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2020-07-20 14:29:18,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:18,455 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-07-20 14:29:18,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 14:29:18,455 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-07-20 14:29:18,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 14:29:18,457 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:18,457 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:18,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:18,672 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:18,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:18,673 INFO L82 PathProgramCache]: Analyzing trace with hash 982254813, now seen corresponding path program 1 times [2020-07-20 14:29:18,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:18,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466022619] [2020-07-20 14:29:18,674 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 14:29:18,724 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:29:18,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:18,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-20 14:29:18,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:18,817 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 14:29:18,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:29:18,854 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:29:19,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 14:29:19,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466022619] [2020-07-20 14:29:19,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 14:29:19,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2020-07-20 14:29:19,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208435240] [2020-07-20 14:29:19,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:29:19,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:19,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:29:19,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-20 14:29:19,018 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 5 states. [2020-07-20 14:29:19,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:19,052 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-07-20 14:29:19,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 14:29:19,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-20 14:29:19,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:19,054 INFO L225 Difference]: With dead ends: 19 [2020-07-20 14:29:19,054 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 14:29:19,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-07-20 14:29:19,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 14:29:19,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 14:29:19,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 14:29:19,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 14:29:19,056 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-07-20 14:29:19,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:19,057 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 14:29:19,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:29:19,057 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 14:29:19,057 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 14:29:19,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:19,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 14:29:19,335 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 14:29:19,335 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:29:19,336 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:29:19,336 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 14:29:19,336 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:29:19,336 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:29:19,337 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 27) the Hoare annotation is: true [2020-07-20 14:29:19,337 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 27) no Hoare annotation was computed. [2020-07-20 14:29:19,337 INFO L264 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (= (mod (+ main_~j~0 main_~i~0) 4294967296) (mod main_~k~0 4294967296)) [2020-07-20 14:29:19,337 INFO L264 CegarLoopResult]: At program point L24-1(lines 19 25) the Hoare annotation is: (= (mod (+ main_~j~0 main_~i~0) 4294967296) (mod main_~k~0 4294967296)) [2020-07-20 14:29:19,337 INFO L268 CegarLoopResult]: For program point L19-2(lines 13 27) no Hoare annotation was computed. [2020-07-20 14:29:19,338 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 11) the Hoare annotation is: true [2020-07-20 14:29:19,338 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 11) no Hoare annotation was computed. [2020-07-20 14:29:19,338 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-20 14:29:19,338 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-20 14:29:19,338 INFO L268 CegarLoopResult]: For program point L7-2(lines 5 11) no Hoare annotation was computed. [2020-07-20 14:29:19,339 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-20 14:29:19,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 02:29:19 BoogieIcfgContainer [2020-07-20 14:29:19,355 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 14:29:19,358 INFO L168 Benchmark]: Toolchain (without parser) took 2022.43 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 102.8 MB in the beginning and 107.1 MB in the end (delta: -4.3 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2020-07-20 14:29:19,359 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 14:29:19,360 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.17 ms. Allocated memory is still 145.8 MB. Free memory was 102.4 MB in the beginning and 93.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-20 14:29:19,361 INFO L168 Benchmark]: Boogie Preprocessor took 119.16 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 93.1 MB in the beginning and 181.7 MB in the end (delta: -88.5 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-20 14:29:19,362 INFO L168 Benchmark]: RCFGBuilder took 231.91 ms. Allocated memory is still 202.9 MB. Free memory was 181.7 MB in the beginning and 170.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-07-20 14:29:19,363 INFO L168 Benchmark]: TraceAbstraction took 1416.61 ms. Allocated memory is still 202.9 MB. Free memory was 170.4 MB in the beginning and 107.1 MB in the end (delta: 63.3 MB). Peak memory consumption was 63.3 MB. Max. memory is 7.1 GB. [2020-07-20 14:29:19,368 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 249.17 ms. Allocated memory is still 145.8 MB. Free memory was 102.4 MB in the beginning and 93.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.16 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 93.1 MB in the beginning and 181.7 MB in the end (delta: -88.5 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 231.91 ms. Allocated memory is still 202.9 MB. Free memory was 181.7 MB in the beginning and 170.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1416.61 ms. Allocated memory is still 202.9 MB. Free memory was 170.4 MB in the beginning and 107.1 MB in the end (delta: 63.3 MB). Peak memory consumption was 63.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 19]: Loop Invariant Derived loop invariant: (j + i) % 4294967296 == k % 4294967296 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 10 SDslu, 68 SDs, 0 SdLazy, 37 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=1, 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, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 13 NumberOfFragments, 23 HoareAnnotationTreeSize, 9 FomulaSimplifications, 40 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 26 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 1869 SizeOfPredicates, 4 NumberOfNonLiveVariables, 79 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 6/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...