/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/jain_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 12:59:46,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 12:59:46,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 12:59:46,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 12:59:46,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 12:59:46,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 12:59:46,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 12:59:46,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 12:59:46,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 12:59:46,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 12:59:46,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 12:59:46,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 12:59:46,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 12:59:46,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 12:59:46,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 12:59:46,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 12:59:46,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 12:59:46,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 12:59:46,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 12:59:46,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 12:59:46,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 12:59:46,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 12:59:46,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 12:59:46,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 12:59:46,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 12:59:46,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 12:59:46,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 12:59:46,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 12:59:46,645 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 12:59:46,673 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 12:59:46,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 12:59:46,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 12:59:46,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 12:59:46,675 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 12:59:46,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 12:59:46,675 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 12:59:46,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 12:59:46,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 12:59:46,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 12:59:46,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 12:59:46,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 12:59:46,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 12:59:46,677 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 12:59:46,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 12:59:46,677 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 12:59:46,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 12:59:46,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 12:59:46,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 12:59:46,678 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 12:59:46,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 12:59:46,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 12:59:46,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 12:59:46,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 12:59:46,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 12:59:46,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 12:59:46,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 12:59:46,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 12:59:46,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 12:59:46,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 12:59:47,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 12:59:47,165 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 12:59:47,169 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 12:59:47,171 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 12:59:47,171 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 12:59:47,173 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/jain_2-1.c [2020-09-04 12:59:47,261 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8b84aba0/a79255a5279a43efaaedca3d6abb250a/FLAG11f4aa90c [2020-09-04 12:59:47,752 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 12:59:47,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/jain_2-1.c [2020-09-04 12:59:47,760 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8b84aba0/a79255a5279a43efaaedca3d6abb250a/FLAG11f4aa90c [2020-09-04 12:59:48,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8b84aba0/a79255a5279a43efaaedca3d6abb250a [2020-09-04 12:59:48,130 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 12:59:48,132 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 12:59:48,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 12:59:48,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 12:59:48,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 12:59:48,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 12:59:48" (1/1) ... [2020-09-04 12:59:48,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@351d06fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:48, skipping insertion in model container [2020-09-04 12:59:48,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 12:59:48" (1/1) ... [2020-09-04 12:59:48,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 12:59:48,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 12:59:48,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 12:59:48,405 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 12:59:48,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 12:59:48,448 INFO L208 MainTranslator]: Completed translation [2020-09-04 12:59:48,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:48 WrapperNode [2020-09-04 12:59:48,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 12:59:48,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 12:59:48,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 12:59:48,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 12:59:48,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:48" (1/1) ... [2020-09-04 12:59:48,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:48" (1/1) ... [2020-09-04 12:59:48,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:48" (1/1) ... [2020-09-04 12:59:48,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:48" (1/1) ... [2020-09-04 12:59:48,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:48" (1/1) ... [2020-09-04 12:59:48,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:48" (1/1) ... [2020-09-04 12:59:48,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:48" (1/1) ... [2020-09-04 12:59:48,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 12:59:48,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 12:59:48,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 12:59:48,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 12:59:48,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 12:59:48,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 12:59:48,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 12:59:48,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 12:59:48,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 12:59:48,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 12:59:48,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-04 12:59:48,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 12:59:48,640 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 12:59:48,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 12:59:48,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 12:59:48,816 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 12:59:48,817 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 12:59:48,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 12:59:48 BoogieIcfgContainer [2020-09-04 12:59:48,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 12:59:48,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 12:59:48,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 12:59:48,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 12:59:48,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 12:59:48" (1/3) ... [2020-09-04 12:59:48,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d2b1a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 12:59:48, skipping insertion in model container [2020-09-04 12:59:48,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:48" (2/3) ... [2020-09-04 12:59:48,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d2b1a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 12:59:48, skipping insertion in model container [2020-09-04 12:59:48,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 12:59:48" (3/3) ... [2020-09-04 12:59:48,830 INFO L109 eAbstractionObserver]: Analyzing ICFG jain_2-1.c [2020-09-04 12:59:48,841 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 12:59:48,851 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 12:59:48,873 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 12:59:48,900 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 12:59:48,900 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 12:59:48,900 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 12:59:48,900 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 12:59:48,901 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 12:59:48,901 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 12:59:48,901 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 12:59:48,902 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 12:59:48,920 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-09-04 12:59:48,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-04 12:59:48,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:59:48,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 12:59:48,928 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:59:48,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:59:48,934 INFO L82 PathProgramCache]: Analyzing trace with hash -13144129, now seen corresponding path program 1 times [2020-09-04 12:59:48,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:59:48,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853586250] [2020-09-04 12:59:48,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:59:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:49,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:59:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:49,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:59:49,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853586250] [2020-09-04 12:59:49,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:59:49,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 12:59:49,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854245483] [2020-09-04 12:59:49,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 12:59:49,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:59:49,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 12:59:49,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-04 12:59:49,310 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2020-09-04 12:59:49,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:59:49,415 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-09-04 12:59:49,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 12:59:49,419 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-09-04 12:59:49,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:59:49,428 INFO L225 Difference]: With dead ends: 33 [2020-09-04 12:59:49,428 INFO L226 Difference]: Without dead ends: 20 [2020-09-04 12:59:49,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-04 12:59:49,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-09-04 12:59:49,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-09-04 12:59:49,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-09-04 12:59:49,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-09-04 12:59:49,475 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2020-09-04 12:59:49,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:59:49,475 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-09-04 12:59:49,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 12:59:49,476 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-09-04 12:59:49,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-04 12:59:49,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:59:49,477 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 12:59:49,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 12:59:49,477 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:59:49,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:59:49,478 INFO L82 PathProgramCache]: Analyzing trace with hash 327764987, now seen corresponding path program 1 times [2020-09-04 12:59:49,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:59:49,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675183286] [2020-09-04 12:59:49,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:59:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:49,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:59:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:49,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:59:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:49,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:59:49,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675183286] [2020-09-04 12:59:49,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263012253] [2020-09-04 12:59:49,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 12:59:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:49,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 15 conjunts are in the unsatisfiable core [2020-09-04 12:59:49,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 12:59:49,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 12:59:49,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 12:59:49,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2020-09-04 12:59:49,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990473532] [2020-09-04 12:59:49,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 12:59:49,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:59:49,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 12:59:49,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-04 12:59:49,982 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 11 states. [2020-09-04 12:59:50,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:59:50,034 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-09-04 12:59:50,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 12:59:50,035 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2020-09-04 12:59:50,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:59:50,036 INFO L225 Difference]: With dead ends: 19 [2020-09-04 12:59:50,036 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 12:59:50,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-04 12:59:50,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 12:59:50,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 12:59:50,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 12:59:50,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 12:59:50,039 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-09-04 12:59:50,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:59:50,039 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 12:59:50,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 12:59:50,039 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 12:59:50,040 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 12:59:50,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-09-04 12:59:50,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 12:59:50,314 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 12:59:50,314 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-04 12:59:50,315 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-04 12:59:50,315 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 12:59:50,315 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 12:59:50,315 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-04 12:59:50,315 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 26) the Hoare annotation is: true [2020-09-04 12:59:50,316 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 26) no Hoare annotation was computed. [2020-09-04 12:59:50,316 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (= (mod (+ main_~y~0 1) (- 2)) 0) (= (mod (+ main_~x~0 1) 2) 0)) [2020-09-04 12:59:50,316 INFO L264 CegarLoopResult]: At program point L23-1(lines 17 24) the Hoare annotation is: (and (= (mod (+ main_~y~0 1) (- 2)) 0) (= (mod (+ main_~x~0 1) 2) 0)) [2020-09-04 12:59:50,316 INFO L268 CegarLoopResult]: For program point L17-2(lines 17 24) no Hoare annotation was computed. [2020-09-04 12:59:50,317 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 26) no Hoare annotation was computed. [2020-09-04 12:59:50,317 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-09-04 12:59:50,317 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-09-04 12:59:50,317 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-04 12:59:50,318 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-09-04 12:59:50,318 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-09-04 12:59:50,318 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-09-04 12:59:50,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 12:59:50 BoogieIcfgContainer [2020-09-04 12:59:50,339 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 12:59:50,343 INFO L168 Benchmark]: Toolchain (without parser) took 2209.76 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 103.8 MB in the beginning and 105.1 MB in the end (delta: -1.3 MB). Peak memory consumption was 60.5 MB. Max. memory is 7.1 GB. [2020-09-04 12:59:50,344 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-09-04 12:59:50,345 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.75 ms. Allocated memory is still 141.0 MB. Free memory was 103.4 MB in the beginning and 94.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-04 12:59:50,346 INFO L168 Benchmark]: Boogie Preprocessor took 108.89 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 94.2 MB in the beginning and 181.8 MB in the end (delta: -87.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-04 12:59:50,347 INFO L168 Benchmark]: RCFGBuilder took 261.87 ms. Allocated memory is still 202.9 MB. Free memory was 181.8 MB in the beginning and 170.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-09-04 12:59:50,348 INFO L168 Benchmark]: TraceAbstraction took 1516.73 ms. Allocated memory is still 202.9 MB. Free memory was 170.6 MB in the beginning and 105.1 MB in the end (delta: 65.5 MB). Peak memory consumption was 65.5 MB. Max. memory is 7.1 GB. [2020-09-04 12:59:50,353 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 316.75 ms. Allocated memory is still 141.0 MB. Free memory was 103.4 MB in the beginning and 94.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.89 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 94.2 MB in the beginning and 181.8 MB in the end (delta: -87.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 261.87 ms. Allocated memory is still 202.9 MB. Free memory was 181.8 MB in the beginning and 170.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1516.73 ms. Allocated memory is still 202.9 MB. Free memory was 170.6 MB in the beginning and 105.1 MB in the end (delta: 65.5 MB). Peak memory consumption was 65.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 17]: Loop Invariant Derived loop invariant: (y + 1) % -2 == 0 && (x + 1) % 2 == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 11 SDslu, 70 SDs, 0 SdLazy, 39 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s 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, 35 HoareAnnotationTreeSize, 9 FomulaSimplifications, 41 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 2631 SizeOfPredicates, 2 NumberOfNonLiveVariables, 40 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 5/8 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...