/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/ldv-regression/test21-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 13:53:51,015 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-20 13:53:51,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:53:51,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:53:51,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:53:51,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:53:51,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:53:51,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:53:51,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:53:51,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:53:51,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:53:51,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:53:51,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:53:51,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:53:51,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:53:51,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:53:51,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:53:51,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:53:51,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:53:51,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:53:51,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:53:51,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:53:51,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 13:53:51,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:53:51,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:53:51,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:53:51,138 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 13:53:51,182 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:53:51,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:53:51,184 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:53:51,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:53:51,188 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:53:51,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:53:51,188 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:53:51,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:53:51,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:53:51,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:53:51,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:53:51,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:53:51,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:53:51,190 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:53:51,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:53:51,190 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:53:51,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:53:51,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:53:51,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:53:51,192 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:53:51,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:53:51,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:53:51,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:53:51,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:53:51,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:53:51,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:53:51,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:53:51,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:53:51,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:53:51,195 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 13:53:51,523 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:53:51,539 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:53:51,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:53:51,545 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:53:51,546 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:53:51,547 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test21-1.c [2020-07-20 13:53:51,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2a2316aa/9e9479a19af04d718e41179e368e7414/FLAG9baf4b025 [2020-07-20 13:53:52,182 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:53:52,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test21-1.c [2020-07-20 13:53:52,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2a2316aa/9e9479a19af04d718e41179e368e7414/FLAG9baf4b025 [2020-07-20 13:53:52,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2a2316aa/9e9479a19af04d718e41179e368e7414 [2020-07-20 13:53:52,572 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:53:52,576 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:53:52,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:53:52,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:53:52,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:53:52,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:53:52" (1/1) ... [2020-07-20 13:53:52,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d7b22cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:53:52, skipping insertion in model container [2020-07-20 13:53:52,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:53:52" (1/1) ... [2020-07-20 13:53:52,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:53:52,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:53:52,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:53:52,872 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:53:52,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:53:52,914 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:53:52,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:53:52 WrapperNode [2020-07-20 13:53:52,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:53:52,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:53:52,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:53:52,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:53:53,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:53:52" (1/1) ... [2020-07-20 13:53:53,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:53:52" (1/1) ... [2020-07-20 13:53:53,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:53:52" (1/1) ... [2020-07-20 13:53:53,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:53:52" (1/1) ... [2020-07-20 13:53:53,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:53:52" (1/1) ... [2020-07-20 13:53:53,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:53:52" (1/1) ... [2020-07-20 13:53:53,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:53:52" (1/1) ... [2020-07-20 13:53:53,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:53:53,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:53:53,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:53:53,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:53:53,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:53:52" (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 13:53:53,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:53:53,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:53:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-07-20 13:53:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-07-20 13:53:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-07-20 13:53:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:53:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:53:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 13:53:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-20 13:53:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-20 13:53:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 13:53:53,136 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-07-20 13:53:53,136 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-20 13:53:53,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 13:53:53,136 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:53:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:53:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 13:53:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 13:53:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:53:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:53:53,456 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:53:53,457 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 13:53:53,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:53:53 BoogieIcfgContainer [2020-07-20 13:53:53,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:53:53,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:53:53,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:53:53,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:53:53,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:53:52" (1/3) ... [2020-07-20 13:53:53,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3f5e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:53:53, skipping insertion in model container [2020-07-20 13:53:53,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:53:52" (2/3) ... [2020-07-20 13:53:53,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3f5e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:53:53, skipping insertion in model container [2020-07-20 13:53:53,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:53:53" (3/3) ... [2020-07-20 13:53:53,473 INFO L109 eAbstractionObserver]: Analyzing ICFG test21-1.c [2020-07-20 13:53:53,487 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:53:53,496 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:53:53,514 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:53:53,545 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:53:53,545 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:53:53,545 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:53:53,545 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:53:53,546 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:53:53,546 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:53:53,546 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:53:53,546 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:53:53,569 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-07-20 13:53:53,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-20 13:53:53,582 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:53:53,589 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:53:53,589 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:53:53,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:53:53,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1351082661, now seen corresponding path program 1 times [2020-07-20 13:53:53,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:53:53,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649121977] [2020-07-20 13:53:53,608 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 13:53:53,786 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:53:53,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:53:53,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 39 conjunts are in the unsatisfiable core [2020-07-20 13:53:53,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:53:53,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 13:53:53,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 13:53:54,110 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 13:53:54,164 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:53:54,165 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-07-20 13:53:54,168 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 13:53:54,169 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-20 13:53:54,179 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:53:54,179 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-07-20 13:53:54,180 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 13:53:54,210 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 13:53:54,226 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2020-07-20 13:53:54,226 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:53:54,228 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:53:54,229 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:53:54,230 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:1 [2020-07-20 13:53:54,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 13:53:54,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649121977] [2020-07-20 13:53:54,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 13:53:54,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2020-07-20 13:53:54,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520613807] [2020-07-20 13:53:54,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 13:53:54,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:53:54,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 13:53:54,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-20 13:53:54,328 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-07-20 13:53:54,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:53:54,407 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-07-20 13:53:54,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 13:53:54,410 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-07-20 13:53:54,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:53:54,419 INFO L225 Difference]: With dead ends: 38 [2020-07-20 13:53:54,420 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 13:53:54,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-07-20 13:53:54,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 13:53:54,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 13:53:54,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 13:53:54,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 13:53:54,462 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-07-20 13:53:54,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:53:54,462 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 13:53:54,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 13:53:54,463 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 13:53:54,463 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 13:53:54,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:53:54,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 13:53:54,768 INFO L268 CegarLoopResult]: For program point initEXIT(lines 11 18) no Hoare annotation was computed. [2020-07-20 13:53:54,768 INFO L271 CegarLoopResult]: At program point initENTRY(lines 11 18) the Hoare annotation is: true [2020-07-20 13:53:54,769 INFO L268 CegarLoopResult]: For program point initFINAL(lines 11 18) no Hoare annotation was computed. [2020-07-20 13:53:54,769 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 13:53:54,769 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 13:53:54,769 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 13:53:54,769 INFO L268 CegarLoopResult]: For program point get_dummyFINAL(lines 20 23) no Hoare annotation was computed. [2020-07-20 13:53:54,770 INFO L271 CegarLoopResult]: At program point get_dummyENTRY(lines 20 23) the Hoare annotation is: true [2020-07-20 13:53:54,770 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-07-20 13:53:54,770 INFO L268 CegarLoopResult]: For program point get_dummyEXIT(lines 20 23) no Hoare annotation was computed. [2020-07-20 13:53:54,770 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 13:53:54,770 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 13:53:54,771 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 13:53:54,771 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 13:53:54,771 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-07-20 13:53:54,771 INFO L268 CegarLoopResult]: For program point L35-2(lines 35 37) no Hoare annotation was computed. [2020-07-20 13:53:54,771 INFO L271 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: true [2020-07-20 13:53:54,771 INFO L271 CegarLoopResult]: At program point L33-1(line 33) the Hoare annotation is: true [2020-07-20 13:53:54,772 INFO L268 CegarLoopResult]: For program point L34-2(lines 34 38) no Hoare annotation was computed. [2020-07-20 13:53:54,772 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2020-07-20 13:53:54,772 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-07-20 13:53:54,772 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 30 44) the Hoare annotation is: true [2020-07-20 13:53:54,773 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 30 44) no Hoare annotation was computed. [2020-07-20 13:53:54,773 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 30 44) no Hoare annotation was computed. [2020-07-20 13:53:54,773 INFO L264 CegarLoopResult]: At program point L36(lines 31 44) the Hoare annotation is: false [2020-07-20 13:53:54,773 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (and (= main_~pd2~0.offset main_~pd1~0.offset) (= main_~pd2~0.base main_~pd1~0.base)) [2020-07-20 13:53:54,773 INFO L268 CegarLoopResult]: For program point L34(lines 34 38) no Hoare annotation was computed. [2020-07-20 13:53:54,774 INFO L268 CegarLoopResult]: For program point L35-1(line 35) no Hoare annotation was computed. [2020-07-20 13:53:54,774 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 25 28) the Hoare annotation is: true [2020-07-20 13:53:54,774 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 25 28) no Hoare annotation was computed. [2020-07-20 13:53:54,774 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 25 28) no Hoare annotation was computed. [2020-07-20 13:53:54,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:53:54 BoogieIcfgContainer [2020-07-20 13:53:54,793 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:53:54,795 INFO L168 Benchmark]: Toolchain (without parser) took 2220.81 ms. Allocated memory was 137.9 MB in the beginning and 234.4 MB in the end (delta: 96.5 MB). Free memory was 100.8 MB in the beginning and 199.0 MB in the end (delta: -98.1 MB). Peak memory consumption was 84.1 MB. Max. memory is 7.1 GB. [2020-07-20 13:53:54,796 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 13:53:54,797 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.74 ms. Allocated memory is still 137.9 MB. Free memory was 100.4 MB in the beginning and 90.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-20 13:53:54,799 INFO L168 Benchmark]: Boogie Preprocessor took 139.80 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 90.3 MB in the beginning and 179.3 MB in the end (delta: -89.1 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-20 13:53:54,800 INFO L168 Benchmark]: RCFGBuilder took 407.58 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 162.9 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2020-07-20 13:53:54,801 INFO L168 Benchmark]: TraceAbstraction took 1327.93 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 162.9 MB in the beginning and 199.0 MB in the end (delta: -36.1 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. [2020-07-20 13:53:54,806 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 337.74 ms. Allocated memory is still 137.9 MB. Free memory was 100.4 MB in the beginning and 90.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.80 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 90.3 MB in the beginning and 179.3 MB in the end (delta: -89.1 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 407.58 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 162.9 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1327.93 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 162.9 MB in the beginning and 199.0 MB in the end (delta: -36.1 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 42]: 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: 31]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 1, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 3 SDslu, 84 SDs, 0 SdLazy, 11 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 12 PreInvPairs, 12 NumberOfFragments, 17 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 4312 SizeOfPredicates, 13 NumberOfNonLiveVariables, 154 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 2 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...