/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_FUNCTIONS --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 [2020-07-20 14:17:28,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 14:17:28,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 14:17:28,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 14:17:28,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 14:17:28,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 14:17:28,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 14:17:28,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 14:17:28,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 14:17:28,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 14:17:28,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 14:17:28,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 14:17:28,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:17:28,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:17:28,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:17:28,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:17:28,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:17:28,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:17:28,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:17:28,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:17:28,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:17:28,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:17:28,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:17:28,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:17:28,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 14:17:28,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 14:17:28,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 14:17:28,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 14:17:28,757 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 14:17:28,778 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:17:28,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:17:28,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:17:28,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:17:28,781 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:17:28,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:17:28,782 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:17:28,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:17:28,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:17:28,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:17:28,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:17:28,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:17:28,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:17:28,784 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:17:28,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:17:28,784 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:17:28,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:17:28,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:17:28,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:17:28,786 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:17:28,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:17:28,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:17:28,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:17:28,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:17:28,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:17:28,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:17:28,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:17:28,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:17:28,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:17:28,790 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_FUNCTIONS 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 14:17:29,105 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:17:29,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:17:29,122 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:17:29,123 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:17:29,124 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:17:29,125 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sqmf.c [2020-07-20 14:17:29,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f25f6d56/b665111efdac43aba2aa701915b3b145/FLAG1fe7b12ff [2020-07-20 14:17:29,632 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:17:29,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sqmf.c [2020-07-20 14:17:29,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f25f6d56/b665111efdac43aba2aa701915b3b145/FLAG1fe7b12ff [2020-07-20 14:17:30,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f25f6d56/b665111efdac43aba2aa701915b3b145 [2020-07-20 14:17:30,039 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:17:30,042 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:17:30,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:17:30,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:17:30,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:17:30,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:17:30" (1/1) ... [2020-07-20 14:17:30,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65136dd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:17:30, skipping insertion in model container [2020-07-20 14:17:30,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:17:30" (1/1) ... [2020-07-20 14:17:30,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:17:30,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:17:30,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:17:30,270 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:17:30,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:17:30,309 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:17:30,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:17:30 WrapperNode [2020-07-20 14:17:30,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:17:30,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:17:30,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:17:30,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:17:30,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:17:30" (1/1) ... [2020-07-20 14:17:30,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:17:30" (1/1) ... [2020-07-20 14:17:30,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:17:30" (1/1) ... [2020-07-20 14:17:30,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:17:30" (1/1) ... [2020-07-20 14:17:30,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:17:30" (1/1) ... [2020-07-20 14:17:30,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:17:30" (1/1) ... [2020-07-20 14:17:30,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:17:30" (1/1) ... [2020-07-20 14:17:30,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:17:30,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:17:30,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:17:30,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:17:30,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:17:30" (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 14:17:30,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:17:30,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:17:30,521 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 14:17:30,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 14:17:30,522 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:17:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:17:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 14:17:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 14:17:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 14:17:30,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 14:17:30,523 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 14:17:30,523 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:17:30,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 14:17:30,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 14:17:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 14:17:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:17:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:17:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 14:17:30,873 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:17:30,874 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-20 14:17:30,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:17:30 BoogieIcfgContainer [2020-07-20 14:17:30,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:17:30,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:17:30,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:17:30,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:17:30,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:17:30" (1/3) ... [2020-07-20 14:17:30,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a142a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:17:30, skipping insertion in model container [2020-07-20 14:17:30,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:17:30" (2/3) ... [2020-07-20 14:17:30,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a142a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:17:30, skipping insertion in model container [2020-07-20 14:17:30,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:17:30" (3/3) ... [2020-07-20 14:17:30,886 INFO L109 eAbstractionObserver]: Analyzing ICFG sqmf.c [2020-07-20 14:17:30,897 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:17:30,903 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:17:30,917 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:17:30,943 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:17:30,943 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:17:30,943 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:17:30,943 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:17:30,944 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:17:30,944 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:17:30,944 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:17:30,944 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:17:30,962 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-07-20 14:17:30,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 14:17:30,969 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:17:30,970 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] [2020-07-20 14:17:30,971 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:17:30,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:17:30,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-07-20 14:17:30,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:17:30,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828799131] [2020-07-20 14:17:30,988 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 14:17:31,109 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:17:31,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:17:31,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 14:17:31,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:17:31,140 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 14:17:31,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:17:31,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828799131] [2020-07-20 14:17:31,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:17:31,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 14:17:31,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944829061] [2020-07-20 14:17:31,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 14:17:31,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:17:31,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 14:17:31,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 14:17:31,167 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2020-07-20 14:17:31,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:17:31,192 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-07-20 14:17:31,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 14:17:31,193 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2020-07-20 14:17:31,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:17:31,203 INFO L225 Difference]: With dead ends: 58 [2020-07-20 14:17:31,203 INFO L226 Difference]: Without dead ends: 29 [2020-07-20 14:17:31,207 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 [2020-07-20 14:17:31,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-20 14:17:31,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-20 14:17:31,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-20 14:17:31,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-07-20 14:17:31,255 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-07-20 14:17:31,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:17:31,256 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-07-20 14:17:31,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 14:17:31,256 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-07-20 14:17:31,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 14:17:31,257 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:17:31,258 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] [2020-07-20 14:17:31,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:17:31,465 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:17:31,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:17:31,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-07-20 14:17:31,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:17:31,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432301966] [2020-07-20 14:17:31,469 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 14:17:31,537 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:17:31,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 14:17:31,538 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 14:17:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 14:17:31,556 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 14:17:31,579 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 14:17:31,579 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 14:17:31,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:17:31,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 02:17:31 BoogieIcfgContainer [2020-07-20 14:17:31,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 14:17:31,837 INFO L168 Benchmark]: Toolchain (without parser) took 1795.19 ms. Allocated memory was 147.3 MB in the beginning and 205.5 MB in the end (delta: 58.2 MB). Free memory was 105.8 MB in the beginning and 127.0 MB in the end (delta: -21.2 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. [2020-07-20 14:17:31,838 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 123.5 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 14:17:31,839 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.83 ms. Allocated memory is still 147.3 MB. Free memory was 105.4 MB in the beginning and 94.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-07-20 14:17:31,840 INFO L168 Benchmark]: Boogie Preprocessor took 137.67 ms. Allocated memory was 147.3 MB in the beginning and 205.5 MB in the end (delta: 58.2 MB). Free memory was 94.6 MB in the beginning and 183.5 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-20 14:17:31,841 INFO L168 Benchmark]: RCFGBuilder took 427.66 ms. Allocated memory is still 205.5 MB. Free memory was 182.9 MB in the beginning and 166.4 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-07-20 14:17:31,842 INFO L168 Benchmark]: TraceAbstraction took 954.70 ms. Allocated memory is still 205.5 MB. Free memory was 165.7 MB in the beginning and 127.0 MB in the end (delta: 38.7 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. [2020-07-20 14:17:31,846 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 123.5 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 266.83 ms. Allocated memory is still 147.3 MB. Free memory was 105.4 MB in the beginning and 94.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.67 ms. Allocated memory was 147.3 MB in the beginning and 205.5 MB in the end (delta: 58.2 MB). Free memory was 94.6 MB in the beginning and 183.5 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 427.66 ms. Allocated memory is still 205.5 MB. Free memory was 182.9 MB in the beginning and 166.4 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 954.70 ms. Allocated memory is still 205.5 MB. Free memory was 165.7 MB in the beginning and 127.0 MB in the end (delta: 38.7 MB). Peak memory consumption was 38.7 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