/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 NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/elimination_max_rec.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 11:12:00,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:12:00,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:12:00,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:12:00,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:12:00,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:12:00,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:12:00,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:12:00,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:12:00,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:12:00,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:12:00,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:12:00,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:12:00,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:12:00,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:12:00,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:12:00,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:12:00,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:12:00,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:12:00,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:12:00,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:12:00,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:12:00,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:12:00,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:12:00,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 11:12:00,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:12:00,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:12:00,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:12:00,672 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 [2020-07-21 11:12:00,690 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:12:00,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:12:00,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:12:00,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:12:00,692 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:12:00,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:12:00,693 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:12:00,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:12:00,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:12:00,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:12:00,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:12:00,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:12:00,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:12:00,694 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:12:00,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:12:00,695 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:12:00,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:12:00,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:12:00,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:12:00,695 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:12:00,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:12:00,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:12:00,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:12:00,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:12:00,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:12:00,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:12:00,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:12:00,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:12:00,697 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:12:00,698 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 -> NOT_INCREMENTALLY [2020-07-21 11:12:01,001 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:12:01,016 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:12:01,020 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:12:01,021 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:12:01,022 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:12:01,023 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max_rec.c [2020-07-21 11:12:01,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6f64a24c/c39588ba5be64e509065ee3086b8ff1c/FLAG8a6875f8b [2020-07-21 11:12:01,626 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:12:01,627 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max_rec.c [2020-07-21 11:12:01,633 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6f64a24c/c39588ba5be64e509065ee3086b8ff1c/FLAG8a6875f8b [2020-07-21 11:12:01,991 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6f64a24c/c39588ba5be64e509065ee3086b8ff1c [2020-07-21 11:12:02,004 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:12:02,009 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:12:02,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:12:02,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:12:02,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:12:02,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:12:01" (1/1) ... [2020-07-21 11:12:02,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ab0059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:12:02, skipping insertion in model container [2020-07-21 11:12:02,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:12:01" (1/1) ... [2020-07-21 11:12:02,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:12:02,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:12:02,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:12:02,379 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:12:02,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:12:02,615 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:12:02,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:12:02 WrapperNode [2020-07-21 11:12:02,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:12:02,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:12:02,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:12:02,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:12:02,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:12:02" (1/1) ... [2020-07-21 11:12:02,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:12:02" (1/1) ... [2020-07-21 11:12:02,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:12:02" (1/1) ... [2020-07-21 11:12:02,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:12:02" (1/1) ... [2020-07-21 11:12:02,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:12:02" (1/1) ... [2020-07-21 11:12:02,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:12:02" (1/1) ... [2020-07-21 11:12:02,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:12:02" (1/1) ... [2020-07-21 11:12:02,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:12:02,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:12:02,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:12:02,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:12:02,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:12:02" (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 [2020-07-21 11:12:02,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:12:02,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:12:02,745 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 11:12:02,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 11:12:02,745 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-07-21 11:12:02,745 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:12:02,745 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-07-21 11:12:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 11:12:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 11:12:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:12:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 11:12:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 11:12:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 11:12:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 11:12:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-21 11:12:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 11:12:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:12:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 11:12:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-07-21 11:12:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 11:12:02,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:12:02,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:12:02,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 11:12:03,133 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:12:03,134 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 11:12:03,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:12:03 BoogieIcfgContainer [2020-07-21 11:12:03,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:12:03,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:12:03,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:12:03,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:12:03,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:12:01" (1/3) ... [2020-07-21 11:12:03,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70cd91b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:12:03, skipping insertion in model container [2020-07-21 11:12:03,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:12:02" (2/3) ... [2020-07-21 11:12:03,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70cd91b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:12:03, skipping insertion in model container [2020-07-21 11:12:03,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:12:03" (3/3) ... [2020-07-21 11:12:03,149 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2020-07-21 11:12:03,168 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:12:03,176 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 11:12:03,192 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 11:12:03,215 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:12:03,216 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:12:03,216 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:12:03,216 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:12:03,217 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:12:03,217 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:12:03,217 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:12:03,217 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:12:03,239 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-07-21 11:12:03,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 11:12:03,246 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:12:03,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:12:03,248 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:12:03,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:12:03,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1882906983, now seen corresponding path program 1 times [2020-07-21 11:12:03,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:12:03,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984192821] [2020-07-21 11:12:03,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-21 11:12:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:12:03,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 11:12:03,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:12:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:12:03,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:12:03,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984192821] [2020-07-21 11:12:03,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:12:03,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 11:12:03,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334436594] [2020-07-21 11:12:03,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 11:12:03,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:12:03,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 11:12:03,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 11:12:03,457 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2020-07-21 11:12:03,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:12:03,489 INFO L93 Difference]: Finished difference Result 77 states and 94 transitions. [2020-07-21 11:12:03,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 11:12:03,491 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2020-07-21 11:12:03,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:12:03,503 INFO L225 Difference]: With dead ends: 77 [2020-07-21 11:12:03,504 INFO L226 Difference]: Without dead ends: 37 [2020-07-21 11:12:03,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 11:12:03,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-21 11:12:03,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-07-21 11:12:03,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-21 11:12:03,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-07-21 11:12:03,560 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 24 [2020-07-21 11:12:03,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:12:03,560 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-07-21 11:12:03,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 11:12:03,561 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-07-21 11:12:03,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 11:12:03,563 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:12:03,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:12:03,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:12:03,778 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:12:03,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:12:03,780 INFO L82 PathProgramCache]: Analyzing trace with hash 861838629, now seen corresponding path program 1 times [2020-07-21 11:12:03,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:12:03,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204472488] [2020-07-21 11:12:03,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:12:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:12:03,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 11:12:03,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:12:03,925 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:12:03,928 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:12:03,932 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:12:03,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:12:03,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:12:03,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204472488] [2020-07-21 11:12:03,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:12:03,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 11:12:03,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859124719] [2020-07-21 11:12:03,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:12:03,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:12:03,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:12:03,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:12:03,964 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-07-21 11:12:04,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:12:04,086 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-07-21 11:12:04,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 11:12:04,088 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-07-21 11:12:04,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:12:04,090 INFO L225 Difference]: With dead ends: 43 [2020-07-21 11:12:04,090 INFO L226 Difference]: Without dead ends: 41 [2020-07-21 11:12:04,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-21 11:12:04,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-21 11:12:04,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-21 11:12:04,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-21 11:12:04,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-07-21 11:12:04,104 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 24 [2020-07-21 11:12:04,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:12:04,106 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-07-21 11:12:04,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:12:04,107 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-07-21 11:12:04,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-21 11:12:04,109 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:12:04,109 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2020-07-21 11:12:04,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:12:04,323 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:12:04,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:12:04,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1344635178, now seen corresponding path program 1 times [2020-07-21 11:12:04,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:12:04,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005224723] [2020-07-21 11:12:04,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:12:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:12:04,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-21 11:12:04,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:12:04,505 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2020-07-21 11:12:04,506 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:12:04,511 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:12:04,512 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:12:04,512 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:7, output treesize:6 [2020-07-21 11:12:06,608 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_1 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_1))) is different from true [2020-07-21 11:12:08,649 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_3 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_3))) is different from true [2020-07-21 11:12:10,701 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_4 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_4))) is different from true [2020-07-21 11:12:12,742 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_5 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_5))) is different from true [2020-07-21 11:12:12,785 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2020-07-21 11:12:12,787 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:12:12,798 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:12:12,802 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-07-21 11:12:12,802 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:29, output treesize:21 [2020-07-21 11:12:12,836 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:12:12,907 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 12 not checked. [2020-07-21 11:12:12,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:12:12,937 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:12:15,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005224723] [2020-07-21 11:12:15,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 11:12:15,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-07-21 11:12:15,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203753251] [2020-07-21 11:12:15,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 11:12:15,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:12:15,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 11:12:15,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=112, Unknown=5, NotChecked=92, Total=240 [2020-07-21 11:12:15,039 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 14 states. [2020-07-21 11:12:17,167 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_check_~a.base_BEFORE_CALL_1 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_1))) (exists ((v_check_~a.base_BEFORE_CALL_3 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_3)))) is different from true [2020-07-21 11:12:17,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:12:17,323 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2020-07-21 11:12:17,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-21 11:12:17,324 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-07-21 11:12:17,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:12:17,325 INFO L225 Difference]: With dead ends: 47 [2020-07-21 11:12:17,325 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 11:12:17,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=52, Invalid=202, Unknown=6, NotChecked=160, Total=420 [2020-07-21 11:12:17,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 11:12:17,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 11:12:17,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 11:12:17,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 11:12:17,330 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-07-21 11:12:17,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:12:17,331 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 11:12:17,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 11:12:17,331 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 11:12:17,331 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 11:12:17,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:12:17,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 11:12:17,930 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:12:17,931 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 11:12:17,931 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:12:17,931 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:12:17,931 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 11:12:17,931 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 11:12:17,932 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:12:17,932 INFO L271 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 5 7) the Hoare annotation is: true [2020-07-21 11:12:17,932 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-07-21 11:12:17,932 INFO L268 CegarLoopResult]: For program point L6-2(lines 5 7) no Hoare annotation was computed. [2020-07-21 11:12:17,932 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2020-07-21 11:12:17,932 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 39 48) the Hoare annotation is: true [2020-07-21 11:12:17,933 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 39 48) no Hoare annotation was computed. [2020-07-21 11:12:17,933 INFO L264 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= .cse0 (select |#memory_int| |main_#t~malloc10.base|)) (= .cse0 (select |#memory_int| main_~a~0.base)))) [2020-07-21 11:12:17,933 INFO L271 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: true [2020-07-21 11:12:17,933 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-07-21 11:12:17,933 INFO L271 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: true [2020-07-21 11:12:17,934 INFO L268 CegarLoopResult]: For program point L43-1(line 43) no Hoare annotation was computed. [2020-07-21 11:12:17,934 INFO L268 CegarLoopResult]: For program point L42-1(line 42) no Hoare annotation was computed. [2020-07-21 11:12:17,934 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 39 48) no Hoare annotation was computed. [2020-07-21 11:12:17,934 INFO L268 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-07-21 11:12:17,934 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 14 37) the Hoare annotation is: true [2020-07-21 11:12:17,934 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (not (<= 0 |check_#in~x|)) (not (= .cse0 (select |#memory_int| |check_#in~a.base|))) (and (= .cse0 (select |#memory_int| check_~a.base)) (<= 0 check_~x) (<= (+ check_~y 1) check_~n)))) [2020-07-21 11:12:17,935 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-07-21 11:12:17,935 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-07-21 11:12:17,935 INFO L268 CegarLoopResult]: For program point L23(lines 23 24) no Hoare annotation was computed. [2020-07-21 11:12:17,935 INFO L264 CegarLoopResult]: At program point L23-2(lines 23 24) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (not (<= 0 |check_#in~x|)) (not (= .cse0 (select |#memory_int| |check_#in~a.base|))) (and (= .cse0 (select |#memory_int| check_~a.base)) (<= 0 check_~x) (<= (+ check_~y 1) check_~n)))) [2020-07-21 11:12:17,935 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 14 37) no Hoare annotation was computed. [2020-07-21 11:12:17,936 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (not (<= 0 |check_#in~x|)) (not (= .cse0 (select |#memory_int| |check_#in~a.base|))) (and (= .cse0 (select |#memory_int| check_~a.base)) (<= 0 check_~x) (<= (+ check_~y 1) check_~n)))) [2020-07-21 11:12:17,936 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-07-21 11:12:17,936 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-07-21 11:12:17,936 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 14 37) no Hoare annotation was computed. [2020-07-21 11:12:17,936 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (let ((.cse1 ((as const (Array Int Int)) 0))) (or (and (exists ((check_~x1~0 Int) (check_~i~0 Int) (check_~a.offset Int)) (let ((.cse0 ((as const (Array Int Int)) 0))) (and (<= (select .cse0 (+ (* check_~x1~0 4) check_~a.offset)) check_~ax~0) (<= check_~ai~0 (select .cse0 (+ (* check_~i~0 4) check_~a.offset)))))) (= .cse1 (select |#memory_int| check_~a.base)) (<= 0 check_~x) (<= (+ check_~y 1) check_~n)) (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (not (<= 0 |check_#in~x|)) (not (= .cse1 (select |#memory_int| |check_#in~a.base|))))) [2020-07-21 11:12:17,937 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 8 10) the Hoare annotation is: true [2020-07-21 11:12:17,937 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 8 10) no Hoare annotation was computed. [2020-07-21 11:12:17,937 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-07-21 11:12:17,937 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-07-21 11:12:17,937 INFO L268 CegarLoopResult]: For program point L9-3(lines 8 10) no Hoare annotation was computed. [2020-07-21 11:12:17,938 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-07-21 11:12:17,938 INFO L271 CegarLoopResult]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: true [2020-07-21 11:12:17,938 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:12:17,938 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:12:17,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:12:17 BoogieIcfgContainer [2020-07-21 11:12:17,946 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 11:12:17,948 INFO L168 Benchmark]: Toolchain (without parser) took 15941.71 ms. Allocated memory was 138.9 MB in the beginning and 234.9 MB in the end (delta: 95.9 MB). Free memory was 100.8 MB in the beginning and 114.5 MB in the end (delta: -13.7 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. [2020-07-21 11:12:17,949 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 11:12:17,950 INFO L168 Benchmark]: CACSL2BoogieTranslator took 607.71 ms. Allocated memory was 138.9 MB in the beginning and 204.5 MB in the end (delta: 65.5 MB). Free memory was 100.5 MB in the beginning and 183.2 MB in the end (delta: -82.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-07-21 11:12:17,951 INFO L168 Benchmark]: Boogie Preprocessor took 53.63 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 180.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-07-21 11:12:17,952 INFO L168 Benchmark]: RCFGBuilder took 466.62 ms. Allocated memory is still 204.5 MB. Free memory was 180.8 MB in the beginning and 162.6 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. [2020-07-21 11:12:17,953 INFO L168 Benchmark]: TraceAbstraction took 14804.78 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 162.6 MB in the beginning and 114.5 MB in the end (delta: 48.2 MB). Peak memory consumption was 78.6 MB. Max. memory is 7.1 GB. [2020-07-21 11:12:17,957 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 607.71 ms. Allocated memory was 138.9 MB in the beginning and 204.5 MB in the end (delta: 65.5 MB). Free memory was 100.5 MB in the beginning and 183.2 MB in the end (delta: -82.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.63 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 180.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 466.62 ms. Allocated memory is still 204.5 MB. Free memory was 180.8 MB in the beginning and 162.6 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14804.78 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 162.6 MB in the beginning and 114.5 MB in the end (delta: 48.2 MB). Peak memory consumption was 78.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.3s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 37 SDslu, 290 SDs, 0 SdLazy, 138 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 80 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 12.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 36 PreInvPairs, 44 NumberOfFragments, 177 HoareAnnotationTreeSize, 36 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 15 FomulaSimplificationsInter, 123 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 10.7s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 98 ConstructedInterpolants, 17 QuantifiedInterpolants, 15638 SizeOfPredicates, 15 NumberOfNonLiveVariables, 412 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 10/22 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...