/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/brs3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 03:55:01,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 03:55:01,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 03:55:01,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 03:55:01,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 03:55:01,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 03:55:01,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 03:55:01,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 03:55:01,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 03:55:01,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 03:55:01,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 03:55:01,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 03:55:01,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 03:55:01,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 03:55:01,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 03:55:01,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 03:55:01,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 03:55:01,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 03:55:01,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 03:55:01,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 03:55:01,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 03:55:01,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 03:55:01,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 03:55:01,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 03:55:01,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 03:55:01,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 03:55:01,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 03:55:01,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 03:55:01,924 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 03:55:01,938 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 03:55:01,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 03:55:01,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 03:55:01,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 03:55:01,940 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 03:55:01,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 03:55:01,941 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 03:55:01,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 03:55:01,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 03:55:01,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 03:55:01,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 03:55:01,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 03:55:01,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 03:55:01,942 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 03:55:01,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 03:55:01,942 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 03:55:01,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 03:55:01,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 03:55:01,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 03:55:01,943 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 03:55:01,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 03:55:01,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:55:01,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 03:55:01,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 03:55:01,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 03:55:01,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 03:55:01,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 03:55:01,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 03:55:01,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 03:55:01,945 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 03:55:02,215 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 03:55:02,226 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 03:55:02,230 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 03:55:02,231 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 03:55:02,234 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 03:55:02,235 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs3f.c [2020-07-20 03:55:02,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9399c54e6/69f407a684fb4d35a4ef24c281920353/FLAG234421aca [2020-07-20 03:55:02,822 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 03:55:02,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs3f.c [2020-07-20 03:55:02,832 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9399c54e6/69f407a684fb4d35a4ef24c281920353/FLAG234421aca [2020-07-20 03:55:03,156 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9399c54e6/69f407a684fb4d35a4ef24c281920353 [2020-07-20 03:55:03,166 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 03:55:03,170 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 03:55:03,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 03:55:03,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 03:55:03,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 03:55:03,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:55:03" (1/1) ... [2020-07-20 03:55:03,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67f0c23b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:55:03, skipping insertion in model container [2020-07-20 03:55:03,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:55:03" (1/1) ... [2020-07-20 03:55:03,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 03:55:03,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 03:55:03,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:55:03,394 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 03:55:03,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:55:03,434 INFO L208 MainTranslator]: Completed translation [2020-07-20 03:55:03,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:55:03 WrapperNode [2020-07-20 03:55:03,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 03:55:03,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 03:55:03,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 03:55:03,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 03:55:03,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:55:03" (1/1) ... [2020-07-20 03:55:03,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:55:03" (1/1) ... [2020-07-20 03:55:03,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:55:03" (1/1) ... [2020-07-20 03:55:03,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:55:03" (1/1) ... [2020-07-20 03:55:03,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:55:03" (1/1) ... [2020-07-20 03:55:03,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:55:03" (1/1) ... [2020-07-20 03:55:03,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:55:03" (1/1) ... [2020-07-20 03:55:03,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 03:55:03,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 03:55:03,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 03:55:03,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 03:55:03,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:55:03" (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 03:55:03,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 03:55:03,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 03:55:03,614 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 03:55:03,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 03:55:03,615 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 03:55:03,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 03:55:03,615 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 03:55:03,615 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 03:55:03,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 03:55:03,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 03:55:03,616 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 03:55:03,616 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 03:55:03,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 03:55:03,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 03:55:03,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 03:55:03,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 03:55:03,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 03:55:03,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 03:55:03,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 03:55:03,951 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 03:55:03,951 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-20 03:55:03,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:55:03 BoogieIcfgContainer [2020-07-20 03:55:03,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 03:55:03,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 03:55:03,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 03:55:03,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 03:55:03,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:55:03" (1/3) ... [2020-07-20 03:55:03,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bcb5946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:55:03, skipping insertion in model container [2020-07-20 03:55:03,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:55:03" (2/3) ... [2020-07-20 03:55:03,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bcb5946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:55:03, skipping insertion in model container [2020-07-20 03:55:03,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:55:03" (3/3) ... [2020-07-20 03:55:03,963 INFO L109 eAbstractionObserver]: Analyzing ICFG brs3f.c [2020-07-20 03:55:03,971 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 03:55:03,977 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 03:55:03,989 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 03:55:04,013 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 03:55:04,014 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 03:55:04,014 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 03:55:04,014 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 03:55:04,014 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 03:55:04,014 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 03:55:04,014 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 03:55:04,015 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 03:55:04,031 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-07-20 03:55:04,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 03:55:04,036 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:55:04,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:55:04,037 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:55:04,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:55:04,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1824292310, now seen corresponding path program 1 times [2020-07-20 03:55:04,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:55:04,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516870253] [2020-07-20 03:55:04,051 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5d909075 [2020-07-20 03:55:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:04,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:04,242 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 03:55:04,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516870253] [2020-07-20 03:55:04,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:55:04,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:55:04,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201719924] [2020-07-20 03:55:04,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:55:04,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:55:04,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:55:04,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:55:04,272 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-07-20 03:55:04,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:55:04,371 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-07-20 03:55:04,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:55:04,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-20 03:55:04,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:55:04,381 INFO L225 Difference]: With dead ends: 56 [2020-07-20 03:55:04,381 INFO L226 Difference]: Without dead ends: 26 [2020-07-20 03:55:04,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 03:55:04,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-20 03:55:04,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-20 03:55:04,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-20 03:55:04,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-07-20 03:55:04,431 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2020-07-20 03:55:04,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:55:04,431 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-07-20 03:55:04,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:55:04,432 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-07-20 03:55:04,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 03:55:04,433 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:55:04,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:55:04,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 03:55:04,434 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:55:04,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:55:04,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1767537087, now seen corresponding path program 1 times [2020-07-20 03:55:04,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:55:04,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003360757] [2020-07-20 03:55:04,436 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5d909075 [2020-07-20 03:55:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:04,582 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 03:55:04,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003360757] [2020-07-20 03:55:04,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:55:04,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 03:55:04,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803463268] [2020-07-20 03:55:04,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 03:55:04,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:55:04,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 03:55:04,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 03:55:04,589 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2020-07-20 03:55:04,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:55:04,725 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-07-20 03:55:04,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 03:55:04,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-07-20 03:55:04,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:55:04,727 INFO L225 Difference]: With dead ends: 45 [2020-07-20 03:55:04,727 INFO L226 Difference]: Without dead ends: 32 [2020-07-20 03:55:04,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 03:55:04,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-20 03:55:04,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-07-20 03:55:04,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-20 03:55:04,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-07-20 03:55:04,737 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2020-07-20 03:55:04,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:55:04,738 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-07-20 03:55:04,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 03:55:04,738 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-07-20 03:55:04,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 03:55:04,739 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:55:04,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:55:04,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 03:55:04,740 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:55:04,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:55:04,740 INFO L82 PathProgramCache]: Analyzing trace with hash -395878216, now seen corresponding path program 1 times [2020-07-20 03:55:04,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:55:04,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451936356] [2020-07-20 03:55:04,741 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5d909075 [2020-07-20 03:55:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 03:55:04,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451936356] [2020-07-20 03:55:04,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:55:04,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 03:55:04,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136234970] [2020-07-20 03:55:04,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 03:55:04,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:55:04,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 03:55:04,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 03:55:04,886 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 8 states. [2020-07-20 03:55:05,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:55:05,094 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-07-20 03:55:05,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 03:55:05,095 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-07-20 03:55:05,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:55:05,096 INFO L225 Difference]: With dead ends: 39 [2020-07-20 03:55:05,096 INFO L226 Difference]: Without dead ends: 33 [2020-07-20 03:55:05,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-07-20 03:55:05,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-20 03:55:05,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-07-20 03:55:05,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-20 03:55:05,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-07-20 03:55:05,105 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 27 [2020-07-20 03:55:05,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:55:05,105 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-07-20 03:55:05,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 03:55:05,106 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-07-20 03:55:05,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 03:55:05,106 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:55:05,107 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:55:05,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 03:55:05,107 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:55:05,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:55:05,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1239476407, now seen corresponding path program 1 times [2020-07-20 03:55:05,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:55:05,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373693642] [2020-07-20 03:55:05,108 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5d909075 [2020-07-20 03:55:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:05,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:55:05,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373693642] [2020-07-20 03:55:05,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466908845] [2020-07-20 03:55:05,201 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@24dae8ed No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:55:05,268 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@24dae8ed issued 4 check-sat command(s) [2020-07-20 03:55:05,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:55:05,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 03:55:05,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:55:05,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:55:05,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:55:05,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-07-20 03:55:05,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24271096] [2020-07-20 03:55:05,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 03:55:05,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:55:05,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 03:55:05,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-07-20 03:55:05,343 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 11 states. [2020-07-20 03:55:05,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:55:05,507 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2020-07-20 03:55:05,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 03:55:05,507 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-07-20 03:55:05,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:55:05,508 INFO L225 Difference]: With dead ends: 55 [2020-07-20 03:55:05,509 INFO L226 Difference]: Without dead ends: 39 [2020-07-20 03:55:05,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-07-20 03:55:05,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-20 03:55:05,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2020-07-20 03:55:05,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-20 03:55:05,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-07-20 03:55:05,516 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 30 [2020-07-20 03:55:05,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:55:05,517 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-07-20 03:55:05,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 03:55:05,517 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-07-20 03:55:05,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-20 03:55:05,518 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:55:05,518 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:55:05,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:55:05,733 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:55:05,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:55:05,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1492634651, now seen corresponding path program 1 times [2020-07-20 03:55:05,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:55:05,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341861722] [2020-07-20 03:55:05,734 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5d909075 [2020-07-20 03:55:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:55:05,806 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:55:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:55:05,862 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:55:05,892 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 03:55:05,892 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 03:55:05,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 03:55:05,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 03:55:05 BoogieIcfgContainer [2020-07-20 03:55:05,931 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 03:55:05,934 INFO L168 Benchmark]: Toolchain (without parser) took 2765.63 ms. Allocated memory was 136.8 MB in the beginning and 230.7 MB in the end (delta: 93.8 MB). Free memory was 101.9 MB in the beginning and 126.2 MB in the end (delta: -24.3 MB). Peak memory consumption was 69.6 MB. Max. memory is 7.1 GB. [2020-07-20 03:55:05,935 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 03:55:05,936 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.61 ms. Allocated memory is still 136.8 MB. Free memory was 101.5 MB in the beginning and 90.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-07-20 03:55:05,937 INFO L168 Benchmark]: Boogie Preprocessor took 120.56 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 90.6 MB in the beginning and 177.6 MB in the end (delta: -87.0 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-20 03:55:05,938 INFO L168 Benchmark]: RCFGBuilder took 398.95 ms. Allocated memory is still 200.3 MB. Free memory was 177.6 MB in the beginning and 160.4 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-07-20 03:55:05,939 INFO L168 Benchmark]: TraceAbstraction took 1974.76 ms. Allocated memory was 200.3 MB in the beginning and 230.7 MB in the end (delta: 30.4 MB). Free memory was 160.4 MB in the beginning and 126.2 MB in the end (delta: 34.2 MB). Peak memory consumption was 64.6 MB. Max. memory is 7.1 GB. [2020-07-20 03:55:05,943 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 264.61 ms. Allocated memory is still 136.8 MB. Free memory was 101.5 MB in the beginning and 90.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.56 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 90.6 MB in the beginning and 177.6 MB in the end (delta: -87.0 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 398.95 ms. Allocated memory is still 200.3 MB. Free memory was 177.6 MB in the beginning and 160.4 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1974.76 ms. Allocated memory was 200.3 MB in the beginning and 230.7 MB in the end (delta: 30.4 MB). Free memory was 160.4 MB in the beginning and 126.2 MB in the end (delta: 34.2 MB). Peak memory consumption was 64.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=32, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=2] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=2] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=2] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=2] [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=2, sum={2:0}] [L29] COND TRUE i