/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/sqmf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:41:26,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 01:41:26,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 01:41:26,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 01:41:26,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 01:41:26,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 01:41:26,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 01:41:26,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 01:41:26,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 01:41:26,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 01:41:26,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 01:41:26,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 01:41:26,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:41:26,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:41:26,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:41:26,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:41:26,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:41:26,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:41:26,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:41:27,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:41:27,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:41:27,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:41:27,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:41:27,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:41:27,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 01:41:27,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:41:27,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:41:27,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:41:27,028 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 01:41:27,049 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:41:27,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:41:27,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:41:27,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:41:27,052 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:41:27,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:41:27,053 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:41:27,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:41:27,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:41:27,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:41:27,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:41:27,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:41:27,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:41:27,054 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:41:27,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:41:27,054 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:41:27,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:41:27,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:41:27,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:41:27,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:41:27,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:41:27,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:41:27,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:41:27,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:41:27,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:41:27,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:41:27,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:41:27,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:41:27,057 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:41:27,057 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 01:41:27,437 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:41:27,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:41:27,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:41:27,464 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:41:27,465 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:41:27,468 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sqmf.c [2020-07-21 01:41:27,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a354b39cd/c84433191cf3434b93b42c051a38341f/FLAG83e074548 [2020-07-21 01:41:28,491 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:41:28,493 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sqmf.c [2020-07-21 01:41:28,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a354b39cd/c84433191cf3434b93b42c051a38341f/FLAG83e074548 [2020-07-21 01:41:28,744 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a354b39cd/c84433191cf3434b93b42c051a38341f [2020-07-21 01:41:28,760 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:41:28,764 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:41:28,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:41:28,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:41:28,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:41:28,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:41:28" (1/1) ... [2020-07-21 01:41:28,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a0ad41b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:28, skipping insertion in model container [2020-07-21 01:41:28,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:41:28" (1/1) ... [2020-07-21 01:41:28,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:41:28,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:41:29,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:41:29,163 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:41:29,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:41:29,213 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:41:29,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:29 WrapperNode [2020-07-21 01:41:29,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:41:29,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:41:29,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:41:29,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:41:29,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:29" (1/1) ... [2020-07-21 01:41:29,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:29" (1/1) ... [2020-07-21 01:41:29,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:29" (1/1) ... [2020-07-21 01:41:29,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:29" (1/1) ... [2020-07-21 01:41:29,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:29" (1/1) ... [2020-07-21 01:41:29,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:29" (1/1) ... [2020-07-21 01:41:29,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:29" (1/1) ... [2020-07-21 01:41:29,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:41:29,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:41:29,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:41:29,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:41:29,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:41:29,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:41:29,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:41:29,491 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 01:41:29,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 01:41:29,491 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:41:29,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:41:29,492 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 01:41:29,492 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 01:41:29,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 01:41:29,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:41:29,493 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 01:41:29,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:41:29,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 01:41:29,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 01:41:29,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 01:41:29,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:41:29,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:41:29,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 01:41:29,890 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:41:29,892 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-21 01:41:29,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:41:29 BoogieIcfgContainer [2020-07-21 01:41:29,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:41:29,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:41:29,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:41:29,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:41:29,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:41:28" (1/3) ... [2020-07-21 01:41:29,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce08b6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:41:29, skipping insertion in model container [2020-07-21 01:41:29,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:29" (2/3) ... [2020-07-21 01:41:29,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce08b6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:41:29, skipping insertion in model container [2020-07-21 01:41:29,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:41:29" (3/3) ... [2020-07-21 01:41:29,913 INFO L109 eAbstractionObserver]: Analyzing ICFG sqmf.c [2020-07-21 01:41:29,930 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:41:29,940 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:41:29,961 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:41:30,003 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:41:30,004 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:41:30,005 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:41:30,005 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:41:30,005 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:41:30,005 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:41:30,005 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:41:30,005 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:41:30,027 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-07-21 01:41:30,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 01:41:30,036 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:41:30,038 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] [2020-07-21 01:41:30,039 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:41:30,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:41:30,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-07-21 01:41:30,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:41:30,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625626979] [2020-07-21 01:41:30,059 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:41:30,236 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:41:30,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:41:30,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 01:41:30,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:41:30,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:41:30,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:41:30,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625626979] [2020-07-21 01:41:30,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:41:30,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 01:41:30,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596846537] [2020-07-21 01:41:30,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 01:41:30,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:41:30,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 01:41:30,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 01:41:30,340 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2020-07-21 01:41:30,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:41:30,386 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-07-21 01:41:30,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 01:41:30,388 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2020-07-21 01:41:30,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:41:30,405 INFO L225 Difference]: With dead ends: 58 [2020-07-21 01:41:30,406 INFO L226 Difference]: Without dead ends: 29 [2020-07-21 01:41:30,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 01:41:30,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-21 01:41:30,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-21 01:41:30,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-21 01:41:30,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-07-21 01:41:30,489 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-07-21 01:41:30,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:41:30,489 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-07-21 01:41:30,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 01:41:30,490 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-07-21 01:41:30,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 01:41:30,492 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:41:30,492 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] [2020-07-21 01:41:30,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:41:30,700 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:41:30,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:41:30,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-07-21 01:41:30,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:41:30,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720239672] [2020-07-21 01:41:30,703 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:41:30,811 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:41:30,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 01:41:30,812 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 01:41:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 01:41:30,849 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 01:41:30,889 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 01:41:30,890 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 01:41:31,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:41:31,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:41:31 BoogieIcfgContainer [2020-07-21 01:41:31,169 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:41:31,175 INFO L168 Benchmark]: Toolchain (without parser) took 2410.53 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 100.8 MB in the beginning and 123.9 MB in the end (delta: -23.0 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. [2020-07-21 01:41:31,177 INFO L168 Benchmark]: CDTParser took 0.91 ms. Allocated memory is still 136.8 MB. Free memory is still 118.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 01:41:31,178 INFO L168 Benchmark]: CACSL2BoogieTranslator took 449.49 ms. Allocated memory is still 136.8 MB. Free memory was 100.4 MB in the beginning and 90.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-21 01:41:31,180 INFO L168 Benchmark]: Boogie Preprocessor took 191.89 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 90.0 MB in the beginning and 178.8 MB in the end (delta: -88.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-07-21 01:41:31,181 INFO L168 Benchmark]: RCFGBuilder took 484.84 ms. Allocated memory is still 201.3 MB. Free memory was 178.8 MB in the beginning and 162.6 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2020-07-21 01:41:31,183 INFO L168 Benchmark]: TraceAbstraction took 1267.94 ms. Allocated memory is still 201.3 MB. Free memory was 161.6 MB in the beginning and 123.9 MB in the end (delta: 37.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 7.1 GB. [2020-07-21 01:41:31,188 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.91 ms. Allocated memory is still 136.8 MB. Free memory is still 118.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 449.49 ms. Allocated memory is still 136.8 MB. Free memory was 100.4 MB in the beginning and 90.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 191.89 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 90.0 MB in the beginning and 178.8 MB in the end (delta: -88.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 484.84 ms. Allocated memory is still 201.3 MB. Free memory was 178.8 MB in the beginning and 162.6 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1267.94 ms. Allocated memory is still 201.3 MB. Free memory was 161.6 MB in the beginning and 123.9 MB in the end (delta: 37.8 MB). Peak memory consumption was 37.8 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)=2, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] long long *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L29] b[0] = 0 [L30] a[0] = 0 [L32] i=1 VAL [\old(N)=0, a={-1:0}, b={-2:0}, i=1, malloc(sizeof(long long)*N)={-2:0}, malloc(sizeof(long long)*N)={-1:0}, N=1] [L32] COND FALSE !(i