/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 BIGGEST_EQUIVALENCE_CLASS --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/loops/array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:41:41,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 01:41:41,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 01:41:41,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 01:41:41,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 01:41:41,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 01:41:41,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 01:41:41,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 01:41:41,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 01:41:41,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 01:41:41,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 01:41:41,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 01:41:41,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:41:41,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:41:41,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:41:41,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:41:41,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:41:41,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:41:41,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:41:41,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:41:41,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:41:41,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:41:41,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:41:41,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:41:41,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 01:41:41,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:41:41,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:41:41,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:41:41,751 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 01:41:41,771 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:41:41,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:41:41,774 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:41:41,774 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:41:41,774 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:41:41,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:41:41,775 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:41:41,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:41:41,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:41:41,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:41:41,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:41:41,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:41:41,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:41:41,776 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:41:41,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:41:41,777 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:41:41,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:41:41,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:41:41,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:41:41,778 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:41:41,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:41:41,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:41:41,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:41:41,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:41:41,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:41:41,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:41:41,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:41:41,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:41:41,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:41:41,780 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 -> BIGGEST_EQUIVALENCE_CLASS 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 [2020-07-21 01:41:42,166 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:41:42,200 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:41:42,208 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:41:42,210 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:41:42,214 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:41:42,218 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-1.c [2020-07-21 01:41:42,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39036fbce/3c73fb8fdafe4b50988ab1fda99c2f9e/FLAGbc68dbff5 [2020-07-21 01:41:43,091 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:41:43,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/array-1.c [2020-07-21 01:41:43,105 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39036fbce/3c73fb8fdafe4b50988ab1fda99c2f9e/FLAGbc68dbff5 [2020-07-21 01:41:43,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39036fbce/3c73fb8fdafe4b50988ab1fda99c2f9e [2020-07-21 01:41:43,405 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:41:43,408 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:41:43,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:41:43,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:41:43,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:41:43,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:41:43" (1/1) ... [2020-07-21 01:41:43,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18c70945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:43, skipping insertion in model container [2020-07-21 01:41:43,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:41:43" (1/1) ... [2020-07-21 01:41:43,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:41:43,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:41:43,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:41:43,712 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:41:43,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:41:43,770 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:41:43,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:43 WrapperNode [2020-07-21 01:41:43,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:41:43,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:41:43,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:41:43,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:41:43,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:43" (1/1) ... [2020-07-21 01:41:43,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:43" (1/1) ... [2020-07-21 01:41:43,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:43" (1/1) ... [2020-07-21 01:41:43,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:43" (1/1) ... [2020-07-21 01:41:43,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:43" (1/1) ... [2020-07-21 01:41:43,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:43" (1/1) ... [2020-07-21 01:41:43,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:43" (1/1) ... [2020-07-21 01:41:43,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:41:43,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:41:43,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:41:43,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:41:43,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:43" (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 01:41:44,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:41:44,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:41:44,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 01:41:44,058 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:41:44,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:41:44,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 01:41:44,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:41:44,059 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:41:44,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 01:41:44,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 01:41:44,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 01:41:44,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 01:41:44,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:41:44,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:41:44,428 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:41:44,428 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 01:41:44,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:41:44 BoogieIcfgContainer [2020-07-21 01:41:44,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:41:44,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:41:44,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:41:44,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:41:44,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:41:43" (1/3) ... [2020-07-21 01:41:44,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7798ff09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:41:44, skipping insertion in model container [2020-07-21 01:41:44,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:43" (2/3) ... [2020-07-21 01:41:44,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7798ff09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:41:44, skipping insertion in model container [2020-07-21 01:41:44,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:41:44" (3/3) ... [2020-07-21 01:41:44,464 INFO L109 eAbstractionObserver]: Analyzing ICFG array-1.c [2020-07-21 01:41:44,480 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:41:44,492 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:41:44,522 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:41:44,558 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:41:44,559 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:41:44,559 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:41:44,559 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:41:44,559 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:41:44,559 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:41:44,560 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:41:44,560 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:41:44,580 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-21 01:41:44,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 01:41:44,587 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:41:44,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:41:44,590 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:41:44,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:41:44,597 INFO L82 PathProgramCache]: Analyzing trace with hash 202253298, now seen corresponding path program 1 times [2020-07-21 01:41:44,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:41:44,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514565869] [2020-07-21 01:41:44,606 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 [2020-07-21 01:41:44,731 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:41:44,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:41:44,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 01:41:44,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:41:44,763 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 01:41:44,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:41:44,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514565869] [2020-07-21 01:41:44,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:41:44,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 01:41:44,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763125174] [2020-07-21 01:41:44,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 01:41:44,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:41:44,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 01:41:44,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 01:41:44,791 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-07-21 01:41:44,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:41:44,825 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-07-21 01:41:44,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 01:41:44,828 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-21 01:41:44,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:41:44,843 INFO L225 Difference]: With dead ends: 35 [2020-07-21 01:41:44,844 INFO L226 Difference]: Without dead ends: 15 [2020-07-21 01:41:44,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 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 01:41:44,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-21 01:41:44,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-21 01:41:44,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-21 01:41:44,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-21 01:41:44,924 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2020-07-21 01:41:44,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:41:44,925 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-21 01:41:44,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 01:41:44,925 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-21 01:41:44,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 01:41:44,927 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:41:44,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:41:45,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:41:45,144 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:41:45,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:41:45,145 INFO L82 PathProgramCache]: Analyzing trace with hash -112667363, now seen corresponding path program 1 times [2020-07-21 01:41:45,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:41:45,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211873715] [2020-07-21 01:41:45,147 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:41:45,212 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:41:45,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:41:45,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 01:41:45,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:41:45,268 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 01:41:45,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:41:45,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211873715] [2020-07-21 01:41:45,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:41:45,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:41:45,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139534416] [2020-07-21 01:41:45,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:41:45,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:41:45,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:41:45,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:41:45,278 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 3 states. [2020-07-21 01:41:45,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:41:45,327 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-07-21 01:41:45,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:41:45,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-07-21 01:41:45,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:41:45,330 INFO L225 Difference]: With dead ends: 24 [2020-07-21 01:41:45,330 INFO L226 Difference]: Without dead ends: 18 [2020-07-21 01:41:45,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:41:45,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-21 01:41:45,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2020-07-21 01:41:45,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-21 01:41:45,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-07-21 01:41:45,343 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2020-07-21 01:41:45,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:41:45,344 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-07-21 01:41:45,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:41:45,345 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-07-21 01:41:45,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 01:41:45,346 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:41:45,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:41:45,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:41:45,560 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:41:45,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:41:45,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1912057964, now seen corresponding path program 1 times [2020-07-21 01:41:45,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:41:45,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60204304] [2020-07-21 01:41:45,563 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 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 01:41:45,656 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:41:45,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:41:45,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 01:41:45,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:41:45,769 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 17 treesize of output 13 [2020-07-21 01:41:45,770 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:41:45,809 INFO L624 ElimStorePlain]: treesize reduction 36, result has 34.5 percent of original size [2020-07-21 01:41:45,810 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_int_7| vanished before elimination [2020-07-21 01:41:45,811 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:41:45,812 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:59, output treesize:5 [2020-07-21 01:41:45,834 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:41:45,950 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:41:45,953 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 21 treesize of output 21 [2020-07-21 01:41:45,959 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:41:45,962 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:41:45,965 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-21 01:41:45,993 INFO L624 ElimStorePlain]: treesize reduction 16, result has 36.0 percent of original size [2020-07-21 01:41:45,997 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:41:45,999 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:31, output treesize:3 [2020-07-21 01:41:46,021 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:41:46,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:41:46,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:41:46,121 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:41:46,161 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:41:46,243 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:41:46,245 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:41:46,251 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:41:46,286 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 40 treesize of output 36 [2020-07-21 01:41:46,295 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 01:41:46,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:41:46,308 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 01:41:46,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:41:46,322 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 5 [2020-07-21 01:41:46,323 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 01:41:46,327 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:41:46,328 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:41:46,344 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 37 treesize of output 33 [2020-07-21 01:41:46,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:41:46,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:41:46,391 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 28 treesize of output 26 [2020-07-21 01:41:46,392 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-21 01:41:46,396 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:41:46,397 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:41:46,403 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-21 01:41:46,404 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-21 01:41:46,411 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-21 01:41:46,412 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-21 01:41:46,478 INFO L624 ElimStorePlain]: treesize reduction 31, result has 36.7 percent of original size [2020-07-21 01:41:46,480 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-21 01:41:46,481 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 5 variables, input treesize:233, output treesize:18 [2020-07-21 01:41:46,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:41:46,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60204304] [2020-07-21 01:41:46,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:41:46,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2020-07-21 01:41:46,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434695895] [2020-07-21 01:41:46,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 01:41:46,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:41:46,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 01:41:46,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:41:46,541 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 11 states. [2020-07-21 01:41:46,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:41:46,853 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2020-07-21 01:41:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 01:41:46,853 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-07-21 01:41:46,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:41:46,855 INFO L225 Difference]: With dead ends: 24 [2020-07-21 01:41:46,855 INFO L226 Difference]: Without dead ends: 18 [2020-07-21 01:41:46,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-07-21 01:41:46,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-21 01:41:46,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-07-21 01:41:46,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-21 01:41:46,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-07-21 01:41:46,864 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 15 [2020-07-21 01:41:46,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:41:46,864 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-07-21 01:41:46,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 01:41:46,865 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-07-21 01:41:46,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 01:41:46,866 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:41:46,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:41:47,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:41:47,081 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:41:47,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:41:47,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1573562706, now seen corresponding path program 1 times [2020-07-21 01:41:47,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:41:47,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964511282] [2020-07-21 01:41:47,083 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:41:47,140 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:41:47,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:41:47,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 01:41:47,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:41:47,158 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:41:47,161 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:41:47,164 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:41:47,188 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-07-21 01:41:47,188 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:41:47,197 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-07-21 01:41:47,198 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 01:41:47,248 INFO L624 ElimStorePlain]: treesize reduction 59, result has 37.9 percent of original size [2020-07-21 01:41:47,257 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 17 treesize of output 13 [2020-07-21 01:41:47,258 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 01:41:47,272 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:41:47,276 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:41:47,276 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:193, output treesize:19 [2020-07-21 01:41:47,342 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:41:47,343 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 23 treesize of output 23 [2020-07-21 01:41:47,345 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:41:47,346 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:41:47,349 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-21 01:41:47,367 INFO L624 ElimStorePlain]: treesize reduction 11, result has 50.0 percent of original size [2020-07-21 01:41:47,372 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:41:47,373 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:28, output treesize:5 [2020-07-21 01:41:47,392 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:41:47,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:41:47,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:41:47,475 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:41:47,557 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:41:47,561 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:41:47,564 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:41:47,568 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:41:47,591 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 40 treesize of output 36 [2020-07-21 01:41:47,599 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 01:41:47,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:41:47,611 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 01:41:47,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:41:47,622 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 5 [2020-07-21 01:41:47,623 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 01:41:47,629 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:41:47,629 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:41:47,640 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 37 treesize of output 33 [2020-07-21 01:41:47,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:41:47,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:41:47,665 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 28 treesize of output 26 [2020-07-21 01:41:47,666 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-21 01:41:47,670 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:41:47,671 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:41:47,677 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-21 01:41:47,678 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-21 01:41:47,685 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-21 01:41:47,686 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-21 01:41:47,728 INFO L624 ElimStorePlain]: treesize reduction 32, result has 36.0 percent of original size [2020-07-21 01:41:47,731 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-21 01:41:47,733 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 5 variables, input treesize:235, output treesize:18 [2020-07-21 01:41:47,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:41:47,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964511282] [2020-07-21 01:41:47,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:41:47,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-07-21 01:41:47,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431069901] [2020-07-21 01:41:47,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 01:41:47,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:41:47,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 01:41:47,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:41:47,818 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 12 states. [2020-07-21 01:41:48,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:41:48,091 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-07-21 01:41:48,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 01:41:48,091 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-07-21 01:41:48,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:41:48,092 INFO L225 Difference]: With dead ends: 17 [2020-07-21 01:41:48,092 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 01:41:48,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-07-21 01:41:48,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 01:41:48,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 01:41:48,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 01:41:48,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 01:41:48,096 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-07-21 01:41:48,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:41:48,097 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 01:41:48,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 01:41:48,097 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 01:41:48,097 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 01:41:48,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:41:48,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 01:41:48,561 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:41:48,562 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:41:48,562 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:41:48,562 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:41:48,562 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 01:41:48,563 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:41:48,563 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:41:48,563 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 29) the Hoare annotation is: true [2020-07-21 01:41:48,563 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (and (exists ((main_~j~0 Int)) (and (< (mod main_~j~0 4294967296) 1) (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) (+ (* (mod main_~j~0 4294967296) 4) |main_~#array~0.offset|))) (<= (mod main_~j~0 4294967296) 2147483647))) (<= main_~menor~0 |main_#t~mem5|) (= 1 main_~SIZE~0)) [2020-07-21 01:41:48,564 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-07-21 01:41:48,564 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 29) no Hoare annotation was computed. [2020-07-21 01:41:48,565 INFO L268 CegarLoopResult]: For program point L22(lines 22 23) no Hoare annotation was computed. [2020-07-21 01:41:48,565 INFO L268 CegarLoopResult]: For program point L19-2(lines 19 24) no Hoare annotation was computed. [2020-07-21 01:41:48,565 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 24) the Hoare annotation is: (and (or (exists ((main_~j~0 Int)) (and (< (mod main_~j~0 4294967296) 1) (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) (+ (* (mod main_~j~0 4294967296) 4) |main_~#array~0.offset|))) (<= (mod main_~j~0 4294967296) 2147483647))) (= 0 main_~j~0)) (= 1 main_~SIZE~0)) [2020-07-21 01:41:48,566 INFO L268 CegarLoopResult]: For program point L19-4(lines 19 24) no Hoare annotation was computed. [2020-07-21 01:41:48,566 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 29) no Hoare annotation was computed. [2020-07-21 01:41:48,567 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-07-21 01:41:48,567 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-07-21 01:41:48,568 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-21 01:41:48,568 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-07-21 01:41:48,568 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-07-21 01:41:48,568 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-07-21 01:41:48,587 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] [2020-07-21 01:41:48,590 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] [2020-07-21 01:41:48,591 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] [2020-07-21 01:41:48,594 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-21 01:41:48,605 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] [2020-07-21 01:41:48,606 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] [2020-07-21 01:41:48,607 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] [2020-07-21 01:41:48,607 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-21 01:41:48,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:41:48 BoogieIcfgContainer [2020-07-21 01:41:48,612 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:41:48,616 INFO L168 Benchmark]: Toolchain (without parser) took 5207.96 ms. Allocated memory was 143.7 MB in the beginning and 231.2 MB in the end (delta: 87.6 MB). Free memory was 101.4 MB in the beginning and 83.5 MB in the end (delta: 18.0 MB). Peak memory consumption was 105.5 MB. Max. memory is 7.1 GB. [2020-07-21 01:41:48,617 INFO L168 Benchmark]: CDTParser took 0.95 ms. Allocated memory is still 143.7 MB. Free memory is still 119.4 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 01:41:48,618 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.35 ms. Allocated memory is still 143.7 MB. Free memory was 101.4 MB in the beginning and 91.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-21 01:41:48,619 INFO L168 Benchmark]: Boogie Preprocessor took 190.49 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 91.4 MB in the beginning and 179.1 MB in the end (delta: -87.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-21 01:41:48,620 INFO L168 Benchmark]: RCFGBuilder took 480.18 ms. Allocated memory is still 201.3 MB. Free memory was 179.1 MB in the beginning and 164.0 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2020-07-21 01:41:48,621 INFO L168 Benchmark]: TraceAbstraction took 4162.60 ms. Allocated memory was 201.3 MB in the beginning and 231.2 MB in the end (delta: 29.9 MB). Free memory was 164.0 MB in the beginning and 83.5 MB in the end (delta: 80.6 MB). Peak memory consumption was 110.4 MB. Max. memory is 7.1 GB. [2020-07-21 01:41:48,627 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.95 ms. Allocated memory is still 143.7 MB. Free memory is still 119.4 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 363.35 ms. Allocated memory is still 143.7 MB. Free memory was 101.4 MB in the beginning and 91.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 190.49 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 91.4 MB in the beginning and 179.1 MB in the end (delta: -87.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 480.18 ms. Allocated memory is still 201.3 MB. Free memory was 179.1 MB in the beginning and 164.0 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4162.60 ms. Allocated memory was 201.3 MB in the beginning and 231.2 MB in the end (delta: 29.9 MB). Free memory was 164.0 MB in the beginning and 83.5 MB in the end (delta: 80.6 MB). Peak memory consumption was 110.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant [2020-07-21 01:41:48,637 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] [2020-07-21 01:41:48,637 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] [2020-07-21 01:41:48,638 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] [2020-07-21 01:41:48,639 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-21 01:41:48,640 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] [2020-07-21 01:41:48,640 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] [2020-07-21 01:41:48,640 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] [2020-07-21 01:41:48,640 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((\exists main_~j~0 : int :: (main_~j~0 % 4294967296 < 1 && menor <= unknown-#memory_int-unknown[array][main_~j~0 % 4294967296 * 4 + array]) && main_~j~0 % 4294967296 <= 2147483647) || 0 == j) && 1 == SIZE - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 25 SDslu, 125 SDs, 0 SdLazy, 105 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 13 NumberOfFragments, 70 HoareAnnotationTreeSize, 10 FomulaSimplifications, 7 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 65 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 54 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 78 ConstructedInterpolants, 9 QuantifiedInterpolants, 5642 SizeOfPredicates, 27 NumberOfNonLiveVariables, 234 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 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 correct! Received shutdown request...