/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --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 [2020-07-20 17:40:17,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 17:40:17,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 17:40:17,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 17:40:17,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 17:40:17,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 17:40:17,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 17:40:17,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 17:40:17,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 17:40:17,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 17:40:17,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 17:40:17,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 17:40:17,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 17:40:17,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 17:40:17,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 17:40:17,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 17:40:17,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 17:40:17,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 17:40:17,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 17:40:17,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 17:40:17,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 17:40:17,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 17:40:17,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 17:40:17,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 17:40:17,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 17:40:17,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 17:40:17,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 17:40:17,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 17:40:17,952 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 17:40:17,967 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 17:40:17,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 17:40:17,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 17:40:17,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 17:40:17,969 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 17:40:17,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 17:40:17,969 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 17:40:17,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 17:40:17,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 17:40:17,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 17:40:17,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 17:40:17,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 17:40:17,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 17:40:17,971 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 17:40:17,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 17:40:17,971 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 17:40:17,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 17:40:17,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 17:40:17,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 17:40:17,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 17:40:17,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 17:40:17,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 17:40:17,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 17:40:17,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 17:40:17,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 17:40:17,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 17:40:17,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:40:17,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 17:40:17,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 17:40:17,974 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 17:40:18,369 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 17:40:18,385 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 17:40:18,391 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 17:40:18,395 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 17:40:18,395 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 17:40:18,396 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-1.c [2020-07-20 17:40:18,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55f40fb98/0c75f7c3d7be4d459ff9888682d52692/FLAG5f4fe02ba [2020-07-20 17:40:18,869 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 17:40:18,869 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/array-1.c [2020-07-20 17:40:18,876 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55f40fb98/0c75f7c3d7be4d459ff9888682d52692/FLAG5f4fe02ba [2020-07-20 17:40:19,247 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55f40fb98/0c75f7c3d7be4d459ff9888682d52692 [2020-07-20 17:40:19,256 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 17:40:19,258 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 17:40:19,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 17:40:19,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 17:40:19,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 17:40:19,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:40:19" (1/1) ... [2020-07-20 17:40:19,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70963897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:40:19, skipping insertion in model container [2020-07-20 17:40:19,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:40:19" (1/1) ... [2020-07-20 17:40:19,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 17:40:19,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 17:40:19,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 17:40:19,488 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 17:40:19,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 17:40:19,538 INFO L208 MainTranslator]: Completed translation [2020-07-20 17:40:19,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:40:19 WrapperNode [2020-07-20 17:40:19,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 17:40:19,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 17:40:19,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 17:40:19,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 17:40:19,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:40:19" (1/1) ... [2020-07-20 17:40:19,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:40:19" (1/1) ... [2020-07-20 17:40:19,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:40:19" (1/1) ... [2020-07-20 17:40:19,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:40:19" (1/1) ... [2020-07-20 17:40:19,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:40:19" (1/1) ... [2020-07-20 17:40:19,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:40:19" (1/1) ... [2020-07-20 17:40:19,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:40:19" (1/1) ... [2020-07-20 17:40:19,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 17:40:19,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 17:40:19,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 17:40:19,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 17:40:19,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:40:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 17:40:19,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 17:40:19,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 17:40:19,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 17:40:19,839 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 17:40:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 17:40:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 17:40:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 17:40:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 17:40:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 17:40:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 17:40:19,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 17:40:19,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 17:40:19,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 17:40:19,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 17:40:20,141 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 17:40:20,141 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 17:40:20,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:40:20 BoogieIcfgContainer [2020-07-20 17:40:20,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 17:40:20,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 17:40:20,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 17:40:20,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 17:40:20,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:40:19" (1/3) ... [2020-07-20 17:40:20,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b3ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:40:20, skipping insertion in model container [2020-07-20 17:40:20,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:40:19" (2/3) ... [2020-07-20 17:40:20,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b3ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:40:20, skipping insertion in model container [2020-07-20 17:40:20,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:40:20" (3/3) ... [2020-07-20 17:40:20,156 INFO L109 eAbstractionObserver]: Analyzing ICFG array-1.c [2020-07-20 17:40:20,169 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 17:40:20,179 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 17:40:20,203 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 17:40:20,238 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 17:40:20,238 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 17:40:20,238 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 17:40:20,239 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 17:40:20,239 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 17:40:20,239 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 17:40:20,239 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 17:40:20,240 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 17:40:20,265 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-20 17:40:20,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 17:40:20,273 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:40:20,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:40:20,275 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:40:20,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:40:20,282 INFO L82 PathProgramCache]: Analyzing trace with hash 202253298, now seen corresponding path program 1 times [2020-07-20 17:40:20,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:40:20,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569071896] [2020-07-20 17:40:20,295 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:40:20,494 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:40:20,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:40:20,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 17:40:20,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:40:20,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:40:20,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:40:20,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569071896] [2020-07-20 17:40:20,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:40:20,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 17:40:20,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042349692] [2020-07-20 17:40:20,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 17:40:20,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:40:20,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 17:40:20,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 17:40:20,580 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-07-20 17:40:20,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:40:20,620 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-07-20 17:40:20,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 17:40:20,622 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-20 17:40:20,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:40:20,637 INFO L225 Difference]: With dead ends: 35 [2020-07-20 17:40:20,638 INFO L226 Difference]: Without dead ends: 15 [2020-07-20 17:40:20,646 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 [2020-07-20 17:40:20,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-20 17:40:20,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-20 17:40:20,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-20 17:40:20,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-20 17:40:20,690 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2020-07-20 17:40:20,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:40:20,691 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-20 17:40:20,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 17:40:20,692 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-20 17:40:20,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 17:40:20,692 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:40:20,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:40:20,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:40:20,903 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:40:20,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:40:20,904 INFO L82 PathProgramCache]: Analyzing trace with hash -112667363, now seen corresponding path program 1 times [2020-07-20 17:40:20,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:40:20,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875154316] [2020-07-20 17:40:20,905 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 [2020-07-20 17:40:20,958 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 17:40:20,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:40:20,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 17:40:20,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:40:20,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:40:20,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:40:20,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875154316] [2020-07-20 17:40:20,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:40:20,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:40:20,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955706188] [2020-07-20 17:40:20,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:40:20,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:40:20,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:40:20,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:40:20,997 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 3 states. [2020-07-20 17:40:21,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:40:21,044 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-07-20 17:40:21,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:40:21,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-07-20 17:40:21,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:40:21,047 INFO L225 Difference]: With dead ends: 24 [2020-07-20 17:40:21,047 INFO L226 Difference]: Without dead ends: 18 [2020-07-20 17:40:21,048 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 [2020-07-20 17:40:21,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-20 17:40:21,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2020-07-20 17:40:21,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-20 17:40:21,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-07-20 17:40:21,056 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2020-07-20 17:40:21,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:40:21,056 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-07-20 17:40:21,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:40:21,057 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-07-20 17:40:21,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 17:40:21,058 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:40:21,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:40:21,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:40:21,274 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:40:21,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:40:21,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1912057964, now seen corresponding path program 1 times [2020-07-20 17:40:21,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:40:21,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991098098] [2020-07-20 17:40:21,277 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 [2020-07-20 17:40:21,345 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:40:21,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:40:21,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 17:40:21,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:40:21,447 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 [2020-07-20 17:40:21,448 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:40:21,483 INFO L624 ElimStorePlain]: treesize reduction 36, result has 34.5 percent of original size [2020-07-20 17:40:21,483 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_int_7| vanished before elimination [2020-07-20 17:40:21,484 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 17:40:21,485 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:59, output treesize:5 [2020-07-20 17:40:21,498 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:40:21,579 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:40:21,580 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 [2020-07-20 17:40:21,583 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:40:21,585 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:40:21,589 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-20 17:40:21,613 INFO L624 ElimStorePlain]: treesize reduction 16, result has 36.0 percent of original size [2020-07-20 17:40:21,615 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 17:40:21,616 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:31, output treesize:3 [2020-07-20 17:40:21,631 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:40:21,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:40:21,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 17:40:21,702 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:40:21,727 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:40:21,785 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:40:21,787 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:40:21,792 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:40:21,835 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-20 17:40:21,836 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:40:21,847 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 [2020-07-20 17:40:21,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:40:21,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:40:21,870 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 [2020-07-20 17:40:21,871 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 17:40:21,875 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:40:21,875 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 17:40:21,881 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-20 17:40:21,881 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-20 17:40:21,888 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 [2020-07-20 17:40:21,892 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 17:40:21,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:40:21,896 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 17:40:21,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:40:21,903 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 [2020-07-20 17:40:21,903 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-20 17:40:21,905 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:40:21,907 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 17:40:21,951 INFO L624 ElimStorePlain]: treesize reduction 31, result has 36.7 percent of original size [2020-07-20 17:40:21,953 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. [2020-07-20 17:40:21,954 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 5 variables, input treesize:233, output treesize:18 [2020-07-20 17:40:21,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:40:21,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991098098] [2020-07-20 17:40:21,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 17:40:21,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2020-07-20 17:40:21,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084718270] [2020-07-20 17:40:21,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 17:40:21,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:40:21,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 17:40:21,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-07-20 17:40:21,996 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 11 states. [2020-07-20 17:40:22,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:40:22,280 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2020-07-20 17:40:22,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 17:40:22,281 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-07-20 17:40:22,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:40:22,282 INFO L225 Difference]: With dead ends: 24 [2020-07-20 17:40:22,282 INFO L226 Difference]: Without dead ends: 18 [2020-07-20 17:40:22,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-07-20 17:40:22,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-20 17:40:22,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-07-20 17:40:22,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-20 17:40:22,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-07-20 17:40:22,289 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 15 [2020-07-20 17:40:22,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:40:22,289 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-07-20 17:40:22,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 17:40:22,290 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-07-20 17:40:22,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 17:40:22,291 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:40:22,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:40:22,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:40:22,493 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:40:22,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:40:22,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1573562706, now seen corresponding path program 1 times [2020-07-20 17:40:22,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:40:22,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033730825] [2020-07-20 17:40:22,495 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 [2020-07-20 17:40:22,543 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:40:22,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:40:22,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 17:40:22,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:40:22,560 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 17:40:22,564 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 17:40:22,569 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 17:40:22,583 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-07-20 17:40:22,583 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:40:22,591 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 [2020-07-20 17:40:22,591 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 17:40:22,625 INFO L624 ElimStorePlain]: treesize reduction 109, result has 22.7 percent of original size [2020-07-20 17:40:22,625 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_int_9| vanished before elimination [2020-07-20 17:40:22,627 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. [2020-07-20 17:40:22,628 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:193, output treesize:19 [2020-07-20 17:40:22,668 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:40:22,669 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 [2020-07-20 17:40:22,670 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:40:22,671 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:40:22,673 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-20 17:40:22,685 INFO L624 ElimStorePlain]: treesize reduction 11, result has 50.0 percent of original size [2020-07-20 17:40:22,687 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 17:40:22,688 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:28, output treesize:5 [2020-07-20 17:40:22,701 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:40:22,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:40:22,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 17:40:22,765 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:40:22,820 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:40:22,822 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:40:22,824 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:40:22,827 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:40:22,849 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 [2020-07-20 17:40:22,853 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 17:40:22,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:40:22,859 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 17:40:22,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:40:22,865 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 [2020-07-20 17:40:22,866 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 17:40:22,868 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:40:22,868 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 17:40:22,873 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-20 17:40:22,874 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 17:40:22,879 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-20 17:40:22,880 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-20 17:40:22,886 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 [2020-07-20 17:40:22,900 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:40:22,901 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 124 treesize of output 118 [2020-07-20 17:40:22,902 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:40:22,904 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:40:22,905 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:40:22,907 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:40:22,909 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:40:22,910 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 17:40:22,911 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:40:22,913 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2020-07-20 17:40:22,930 INFO L624 ElimStorePlain]: treesize reduction 127, result has 6.6 percent of original size [2020-07-20 17:40:22,931 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 17:40:22,956 INFO L624 ElimStorePlain]: treesize reduction 32, result has 36.0 percent of original size [2020-07-20 17:40:22,958 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. [2020-07-20 17:40:22,958 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 5 variables, input treesize:235, output treesize:18 [2020-07-20 17:40:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:40:23,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033730825] [2020-07-20 17:40:23,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 17:40:23,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-07-20 17:40:23,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917057831] [2020-07-20 17:40:23,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 17:40:23,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:40:23,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 17:40:23,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-07-20 17:40:23,007 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 12 states. [2020-07-20 17:40:23,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:40:23,181 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-07-20 17:40:23,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 17:40:23,181 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-07-20 17:40:23,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:40:23,182 INFO L225 Difference]: With dead ends: 17 [2020-07-20 17:40:23,182 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 17:40:23,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-07-20 17:40:23,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 17:40:23,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 17:40:23,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 17:40:23,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 17:40:23,184 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-07-20 17:40:23,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:40:23,184 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 17:40:23,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 17:40:23,184 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 17:40:23,184 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 17:40:23,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:40:23,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 17:40:23,550 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 17:40:23,551 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 17:40:23,551 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 17:40:23,551 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 17:40:23,551 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 17:40:23,551 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 17:40:23,551 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 17:40:23,552 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 29) the Hoare annotation is: true [2020-07-20 17:40:23,552 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (and (<= main_~menor~0 |main_#t~mem5|) (exists ((main_~j~0 Int)) (and (<= (mod main_~j~0 4294967296) 2147483647) (< (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|))))) (= 1 main_~SIZE~0)) [2020-07-20 17:40:23,552 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-07-20 17:40:23,552 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 29) no Hoare annotation was computed. [2020-07-20 17:40:23,552 INFO L268 CegarLoopResult]: For program point L22(lines 22 23) no Hoare annotation was computed. [2020-07-20 17:40:23,552 INFO L268 CegarLoopResult]: For program point L19-2(lines 19 24) no Hoare annotation was computed. [2020-07-20 17:40:23,553 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) 2147483647) (<= 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) 1))) (= 0 main_~j~0)) (= 1 main_~SIZE~0)) [2020-07-20 17:40:23,553 INFO L268 CegarLoopResult]: For program point L19-4(lines 19 24) no Hoare annotation was computed. [2020-07-20 17:40:23,553 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 29) no Hoare annotation was computed. [2020-07-20 17:40:23,553 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-07-20 17:40:23,553 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-07-20 17:40:23,554 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-20 17:40:23,554 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-07-20 17:40:23,554 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-07-20 17:40:23,554 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-07-20 17:40:23,565 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] [2020-07-20 17:40:23,566 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] [2020-07-20 17:40:23,566 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] [2020-07-20 17:40:23,568 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 17:40:23,575 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] [2020-07-20 17:40:23,575 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] [2020-07-20 17:40:23,576 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] [2020-07-20 17:40:23,576 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 17:40:23,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:40:23 BoogieIcfgContainer [2020-07-20 17:40:23,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 17:40:23,581 INFO L168 Benchmark]: Toolchain (without parser) took 4323.18 ms. Allocated memory was 140.5 MB in the beginning and 240.1 MB in the end (delta: 99.6 MB). Free memory was 105.5 MB in the beginning and 199.0 MB in the end (delta: -93.5 MB). Peak memory consumption was 6.1 MB. Max. memory is 7.1 GB. [2020-07-20 17:40:23,581 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 140.5 MB. Free memory was 123.6 MB in the beginning and 123.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-20 17:40:23,582 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.36 ms. Allocated memory is still 140.5 MB. Free memory was 105.1 MB in the beginning and 95.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-20 17:40:23,583 INFO L168 Benchmark]: Boogie Preprocessor took 225.10 ms. Allocated memory was 140.5 MB in the beginning and 207.1 MB in the end (delta: 66.6 MB). Free memory was 95.1 MB in the beginning and 185.1 MB in the end (delta: -90.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-07-20 17:40:23,584 INFO L168 Benchmark]: RCFGBuilder took 380.50 ms. Allocated memory is still 207.1 MB. Free memory was 185.1 MB in the beginning and 171.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-07-20 17:40:23,585 INFO L168 Benchmark]: TraceAbstraction took 3431.08 ms. Allocated memory was 207.1 MB in the beginning and 240.1 MB in the end (delta: 33.0 MB). Free memory was 170.7 MB in the beginning and 199.0 MB in the end (delta: -28.3 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-07-20 17:40:23,589 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 140.5 MB. Free memory was 123.6 MB in the beginning and 123.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 280.36 ms. Allocated memory is still 140.5 MB. Free memory was 105.1 MB in the beginning and 95.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 225.10 ms. Allocated memory was 140.5 MB in the beginning and 207.1 MB in the end (delta: 66.6 MB). Free memory was 95.1 MB in the beginning and 185.1 MB in the end (delta: -90.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 380.50 ms. Allocated memory is still 207.1 MB. Free memory was 185.1 MB in the beginning and 171.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3431.08 ms. Allocated memory was 207.1 MB in the beginning and 240.1 MB in the end (delta: 33.0 MB). Free memory was 170.7 MB in the beginning and 199.0 MB in the end (delta: -28.3 MB). Peak memory consumption was 4.8 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 [2020-07-20 17:40:23,598 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] [2020-07-20 17:40:23,598 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] [2020-07-20 17:40:23,598 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] [2020-07-20 17:40:23,598 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 17:40:23,599 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] [2020-07-20 17:40:23,599 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] [2020-07-20 17:40:23,599 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~j~0,QUANTIFIED] [2020-07-20 17:40:23,600 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((\exists main_~j~0 : int :: (main_~j~0 % 4294967296 <= 2147483647 && menor <= unknown-#memory_int-unknown[array][main_~j~0 % 4294967296 * 4 + array]) && main_~j~0 % 4294967296 < 1) || 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: 3.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 25 SDslu, 125 SDs, 0 SdLazy, 105 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s 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, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 54 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 78 ConstructedInterpolants, 9 QuantifiedInterpolants, 5642 SizeOfPredicates, 27 NumberOfNonLiveVariables, 221 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...