/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/ldv-regression/test_while_int.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:30:06,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:30:06,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:30:06,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:30:06,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:30:06,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:30:06,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:30:06,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:30:06,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:30:06,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:30:06,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:30:06,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-09-04 13:30:06,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:30:06,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:30:06,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:30:06,239 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 13:30:06,284 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:30:06,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:30:06,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:30:06,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:30:06,286 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:30:06,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:30:06,288 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:30:06,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:30:06,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:30:06,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:30:06,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:30:06,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:30:06,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:30:06,289 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:30:06,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:30:06,289 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:30:06,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:30:06,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:30:06,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:30:06,292 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:30:06,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:30:06,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:30:06,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:30:06,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:30:06,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:30:06,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:30:06,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:30:06,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:30:06,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:30:06,294 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:30:06,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:30:06,804 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:30:06,808 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:30:06,811 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:30:06,811 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:30:06,813 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i [2020-09-04 13:30:06,899 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5bf38f8a/3dfff9d216f548799d6ce7e07267939c/FLAG824fd77d7 [2020-09-04 13:30:07,413 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:30:07,414 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i [2020-09-04 13:30:07,422 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5bf38f8a/3dfff9d216f548799d6ce7e07267939c/FLAG824fd77d7 [2020-09-04 13:30:07,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5bf38f8a/3dfff9d216f548799d6ce7e07267939c [2020-09-04 13:30:07,848 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:30:07,850 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:30:07,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:30:07,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:30:07,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:30:07,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:30:07" (1/1) ... [2020-09-04 13:30:07,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@512434f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:30:07, skipping insertion in model container [2020-09-04 13:30:07,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:30:07" (1/1) ... [2020-09-04 13:30:07,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:30:07,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:30:08,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:30:08,110 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:30:08,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:30:08,146 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:30:08,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:30:08 WrapperNode [2020-09-04 13:30:08,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:30:08,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:30:08,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:30:08,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:30:08,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:30:08" (1/1) ... [2020-09-04 13:30:08,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:30:08" (1/1) ... [2020-09-04 13:30:08,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:30:08" (1/1) ... [2020-09-04 13:30:08,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:30:08" (1/1) ... [2020-09-04 13:30:08,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:30:08" (1/1) ... [2020-09-04 13:30:08,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:30:08" (1/1) ... [2020-09-04 13:30:08,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:30:08" (1/1) ... [2020-09-04 13:30:08,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:30:08,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:30:08,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:30:08,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:30:08,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:30:08" (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 13:30:08,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:30:08,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:30:08,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-04 13:30:08,357 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:30:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:30:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-04 13:30:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:30:08,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:30:08,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:30:08,536 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:30:08,538 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 13:30:08,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:30:08 BoogieIcfgContainer [2020-09-04 13:30:08,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:30:08,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:30:08,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:30:08,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:30:08,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:30:07" (1/3) ... [2020-09-04 13:30:08,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8554e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:30:08, skipping insertion in model container [2020-09-04 13:30:08,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:30:08" (2/3) ... [2020-09-04 13:30:08,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8554e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:30:08, skipping insertion in model container [2020-09-04 13:30:08,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:30:08" (3/3) ... [2020-09-04 13:30:08,551 INFO L109 eAbstractionObserver]: Analyzing ICFG test_while_int.c_1.i [2020-09-04 13:30:08,563 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:30:08,573 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:30:08,596 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:30:08,627 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:30:08,627 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:30:08,627 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:30:08,627 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:30:08,627 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:30:08,628 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:30:08,628 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:30:08,628 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:30:08,651 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-09-04 13:30:08,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-04 13:30:08,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:30:08,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:30:08,660 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:30:08,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:30:08,666 INFO L82 PathProgramCache]: Analyzing trace with hash 676687463, now seen corresponding path program 1 times [2020-09-04 13:30:08,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:30:08,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937811065] [2020-09-04 13:30:08,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:30:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:08,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:30:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:08,851 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 13:30:08,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937811065] [2020-09-04 13:30:08,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:30:08,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 13:30:08,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658775659] [2020-09-04 13:30:08,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 13:30:08,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:30:08,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 13:30:08,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-04 13:30:08,890 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2020-09-04 13:30:08,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:30:08,968 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2020-09-04 13:30:08,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 13:30:08,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-04 13:30:08,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:30:08,981 INFO L225 Difference]: With dead ends: 30 [2020-09-04 13:30:08,982 INFO L226 Difference]: Without dead ends: 13 [2020-09-04 13:30:08,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-04 13:30:09,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-09-04 13:30:09,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-09-04 13:30:09,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-09-04 13:30:09,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-09-04 13:30:09,028 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2020-09-04 13:30:09,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:30:09,029 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-09-04 13:30:09,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 13:30:09,029 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-09-04 13:30:09,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-04 13:30:09,030 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:30:09,030 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:30:09,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:30:09,031 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:30:09,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:30:09,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1754257002, now seen corresponding path program 1 times [2020-09-04 13:30:09,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:30:09,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205528122] [2020-09-04 13:30:09,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:30:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:09,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:30:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:30:09,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205528122] [2020-09-04 13:30:09,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465919936] [2020-09-04 13:30:09,100 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 13:30:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:09,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-04 13:30:09,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:30:09,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:30:09,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:30:09,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-09-04 13:30:09,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38677871] [2020-09-04 13:30:09,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:30:09,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:30:09,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:30:09,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:30:09,206 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2020-09-04 13:30:09,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:30:09,240 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-09-04 13:30:09,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 13:30:09,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-04 13:30:09,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:30:09,242 INFO L225 Difference]: With dead ends: 18 [2020-09-04 13:30:09,242 INFO L226 Difference]: Without dead ends: 15 [2020-09-04 13:30:09,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:30:09,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-09-04 13:30:09,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2020-09-04 13:30:09,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-09-04 13:30:09,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-09-04 13:30:09,249 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2020-09-04 13:30:09,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:30:09,249 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-09-04 13:30:09,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:30:09,250 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-09-04 13:30:09,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-04 13:30:09,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:30:09,251 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:30:09,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-09-04 13:30:09,466 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:30:09,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:30:09,468 INFO L82 PathProgramCache]: Analyzing trace with hash -2083501651, now seen corresponding path program 2 times [2020-09-04 13:30:09,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:30:09,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285269646] [2020-09-04 13:30:09,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:30:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:30:09,480 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:30:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:30:09,489 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:30:09,505 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 13:30:09,505 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 13:30:09,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 13:30:09,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:30:09 BoogieIcfgContainer [2020-09-04 13:30:09,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:30:09,531 INFO L168 Benchmark]: Toolchain (without parser) took 1679.82 ms. Allocated memory was 143.7 MB in the beginning and 205.5 MB in the end (delta: 61.9 MB). Free memory was 106.1 MB in the beginning and 134.4 MB in the end (delta: -28.3 MB). Peak memory consumption was 33.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:30:09,533 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 143.7 MB. Free memory was 125.2 MB in the beginning and 124.8 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-09-04 13:30:09,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.28 ms. Allocated memory is still 143.7 MB. Free memory was 106.1 MB in the beginning and 96.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:30:09,535 INFO L168 Benchmark]: Boogie Preprocessor took 128.96 ms. Allocated memory was 143.7 MB in the beginning and 205.5 MB in the end (delta: 61.9 MB). Free memory was 96.9 MB in the beginning and 184.5 MB in the end (delta: -87.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-04 13:30:09,536 INFO L168 Benchmark]: RCFGBuilder took 264.26 ms. Allocated memory is still 205.5 MB. Free memory was 184.5 MB in the beginning and 173.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:30:09,537 INFO L168 Benchmark]: TraceAbstraction took 985.35 ms. Allocated memory is still 205.5 MB. Free memory was 173.1 MB in the beginning and 134.4 MB in the end (delta: 38.7 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. [2020-09-04 13:30:09,541 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 143.7 MB. Free memory was 125.2 MB in the beginning and 124.8 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 296.28 ms. Allocated memory is still 143.7 MB. Free memory was 106.1 MB in the beginning and 96.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.96 ms. Allocated memory was 143.7 MB in the beginning and 205.5 MB in the end (delta: 61.9 MB). Free memory was 96.9 MB in the beginning and 184.5 MB in the end (delta: -87.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 264.26 ms. Allocated memory is still 205.5 MB. Free memory was 184.5 MB in the beginning and 173.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 985.35 ms. Allocated memory is still 205.5 MB. Free memory was 173.1 MB in the beginning and 134.4 MB in the end (delta: 38.7 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i=0; VAL [i=0] [L13] COND TRUE i<5 [L14] i++ VAL [i=1] [L16] (i!=3) ? (0) : __blast_assert () VAL [i=1] [L13] COND TRUE i<5 [L14] i++ VAL [i=2] [L16] (i!=3) ? (0) : __blast_assert () VAL [i=2] [L13] COND TRUE i<5 [L14] i++ VAL [i=3] [L16] (i!=3) ? (0) : __blast_assert () VAL [i=3] [L16] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 3 SDslu, 38 SDs, 0 SdLazy, 21 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 456 SizeOfPredicates, 1 NumberOfNonLiveVariables, 25 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 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 incorrect! Received shutdown request...