/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/sina4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 17:39:59,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 17:39:59,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 17:39:59,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 17:39:59,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 17:39:59,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 17:39:59,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 17:39:59,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 17:39:59,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 17:39:59,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 17:39:59,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 17:39:59,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 17:39:59,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 17:39:59,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 17:39:59,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 17:39:59,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 17:39:59,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 17:39:59,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 17:39:59,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 17:39:59,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 17:39:59,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 17:39:59,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 17:39:59,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 17:39:59,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 17:39:59,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 17:39:59,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 17:39:59,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 17:39:59,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 17:39:59,584 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 17:39:59,599 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 17:39:59,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 17:39:59,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 17:39:59,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 17:39:59,601 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 17:39:59,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 17:39:59,602 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 17:39:59,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 17:39:59,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 17:39:59,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 17:39:59,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 17:39:59,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 17:39:59,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 17:39:59,603 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 17:39:59,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 17:39:59,604 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 17:39:59,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 17:39:59,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 17:39:59,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 17:39:59,605 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 17:39:59,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 17:39:59,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 17:39:59,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 17:39:59,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 17:39:59,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 17:39:59,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 17:39:59,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:39:59,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 17:39:59,606 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 17:39:59,607 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 17:39:59,910 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 17:39:59,924 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 17:39:59,929 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 17:39:59,933 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 17:39:59,933 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 17:39:59,934 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina4f.c [2020-07-20 17:40:00,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29c74e40d/b327be4525ca4c4e99911b7422a904e2/FLAG4dbbd446f [2020-07-20 17:40:00,510 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 17:40:00,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina4f.c [2020-07-20 17:40:00,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29c74e40d/b327be4525ca4c4e99911b7422a904e2/FLAG4dbbd446f [2020-07-20 17:40:00,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29c74e40d/b327be4525ca4c4e99911b7422a904e2 [2020-07-20 17:40:00,858 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 17:40:00,862 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 17:40:00,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 17:40:00,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 17:40:00,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 17:40:00,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:40:00" (1/1) ... [2020-07-20 17:40:00,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71cc937f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:40:00, skipping insertion in model container [2020-07-20 17:40:00,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:40:00" (1/1) ... [2020-07-20 17:40:00,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 17:40:00,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 17:40:01,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 17:40:01,106 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 17:40:01,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 17:40:01,234 INFO L208 MainTranslator]: Completed translation [2020-07-20 17:40:01,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:40:01 WrapperNode [2020-07-20 17:40:01,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 17:40:01,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 17:40:01,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 17:40:01,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 17:40:01,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:40:01" (1/1) ... [2020-07-20 17:40:01,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:40:01" (1/1) ... [2020-07-20 17:40:01,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:40:01" (1/1) ... [2020-07-20 17:40:01,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:40:01" (1/1) ... [2020-07-20 17:40:01,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:40:01" (1/1) ... [2020-07-20 17:40:01,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:40:01" (1/1) ... [2020-07-20 17:40:01,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:40:01" (1/1) ... [2020-07-20 17:40:01,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 17:40:01,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 17:40:01,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 17:40:01,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 17:40:01,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:40:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 17:40:01,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 17:40:01,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 17:40:01,380 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 17:40:01,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 17:40:01,380 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 17:40:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 17:40:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 17:40:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 17:40:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 17:40:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 17:40:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 17:40:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 17:40:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 17:40:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 17:40:01,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 17:40:01,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 17:40:01,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 17:40:01,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 17:40:01,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 17:40:01,984 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 17:40:01,984 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 17:40:01,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:40:01 BoogieIcfgContainer [2020-07-20 17:40:01,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 17:40:01,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 17:40:01,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 17:40:01,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 17:40:01,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:40:00" (1/3) ... [2020-07-20 17:40:01,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e37a0f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:40:01, skipping insertion in model container [2020-07-20 17:40:01,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:40:01" (2/3) ... [2020-07-20 17:40:01,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e37a0f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:40:01, skipping insertion in model container [2020-07-20 17:40:01,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:40:01" (3/3) ... [2020-07-20 17:40:01,997 INFO L109 eAbstractionObserver]: Analyzing ICFG sina4f.c [2020-07-20 17:40:02,007 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 17:40:02,015 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 17:40:02,028 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 17:40:02,052 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 17:40:02,052 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 17:40:02,053 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 17:40:02,053 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 17:40:02,053 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 17:40:02,053 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 17:40:02,053 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 17:40:02,053 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 17:40:02,073 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-07-20 17:40:02,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 17:40:02,080 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:40:02,082 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] [2020-07-20 17:40:02,082 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:40:02,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:40:02,089 INFO L82 PathProgramCache]: Analyzing trace with hash -173101897, now seen corresponding path program 1 times [2020-07-20 17:40:02,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:40:02,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651296820] [2020-07-20 17:40:02,100 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:40:02,236 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 17:40:02,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:40:02,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 17:40:02,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:40:02,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:40:02,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:40:02,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651296820] [2020-07-20 17:40:02,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:40:02,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 17:40:02,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641060010] [2020-07-20 17:40:02,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 17:40:02,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:40:02,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 17:40:02,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 17:40:02,306 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-07-20 17:40:02,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:40:02,335 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2020-07-20 17:40:02,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 17:40:02,336 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2020-07-20 17:40:02,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:40:02,345 INFO L225 Difference]: With dead ends: 70 [2020-07-20 17:40:02,346 INFO L226 Difference]: Without dead ends: 35 [2020-07-20 17:40:02,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 17:40:02,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-20 17:40:02,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-07-20 17:40:02,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-20 17:40:02,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-07-20 17:40:02,390 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 26 [2020-07-20 17:40:02,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:40:02,390 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-07-20 17:40:02,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 17:40:02,391 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-07-20 17:40:02,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 17:40:02,392 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:40:02,392 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] [2020-07-20 17:40:02,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:40:02,599 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:40:02,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:40:02,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1503462707, now seen corresponding path program 1 times [2020-07-20 17:40:02,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:40:02,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139475833] [2020-07-20 17:40:02,602 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:40:02,671 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 17:40:02,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:40:02,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 17:40:02,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:40:02,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:40:02,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:40:02,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139475833] [2020-07-20 17:40:02,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:40:02,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 17:40:02,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872793174] [2020-07-20 17:40:02,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 17:40:02,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:40:02,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 17:40:02,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 17:40:02,734 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-07-20 17:40:02,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:40:02,849 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2020-07-20 17:40:02,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 17:40:02,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-07-20 17:40:02,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:40:02,854 INFO L225 Difference]: With dead ends: 67 [2020-07-20 17:40:02,854 INFO L226 Difference]: Without dead ends: 47 [2020-07-20 17:40:02,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 17:40:02,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-07-20 17:40:02,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2020-07-20 17:40:02,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-20 17:40:02,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-07-20 17:40:02,871 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26 [2020-07-20 17:40:02,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:40:02,871 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-07-20 17:40:02,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 17:40:02,872 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-07-20 17:40:02,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-20 17:40:02,873 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:40:02,873 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, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:40:03,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:40:03,090 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:40:03,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:40:03,091 INFO L82 PathProgramCache]: Analyzing trace with hash -260192085, now seen corresponding path program 1 times [2020-07-20 17:40:03,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:40:03,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979326704] [2020-07-20 17:40:03,093 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:40:03,185 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:40:03,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 17:40:03,186 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 17:40:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 17:40:03,213 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 17:40:03,241 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 17:40:03,242 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 17:40:03,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:40:03,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:40:03 BoogieIcfgContainer [2020-07-20 17:40:03,511 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 17:40:03,514 INFO L168 Benchmark]: Toolchain (without parser) took 2653.41 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 89.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 76.1 MB. Max. memory is 7.1 GB. [2020-07-20 17:40:03,515 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 17:40:03,517 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.16 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 102.1 MB in the beginning and 180.4 MB in the end (delta: -78.2 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-07-20 17:40:03,518 INFO L168 Benchmark]: Boogie Preprocessor took 49.47 ms. Allocated memory is still 201.3 MB. Free memory was 180.4 MB in the beginning and 178.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-07-20 17:40:03,519 INFO L168 Benchmark]: RCFGBuilder took 703.80 ms. Allocated memory is still 201.3 MB. Free memory was 178.0 MB in the beginning and 159.1 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2020-07-20 17:40:03,520 INFO L168 Benchmark]: TraceAbstraction took 1521.63 ms. Allocated memory is still 201.3 MB. Free memory was 158.4 MB in the beginning and 89.9 MB in the end (delta: 68.5 MB). Peak memory consumption was 68.5 MB. Max. memory is 7.1 GB. [2020-07-20 17:40:03,524 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 372.16 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 102.1 MB in the beginning and 180.4 MB in the end (delta: -78.2 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.47 ms. Allocated memory is still 201.3 MB. Free memory was 180.4 MB in the beginning and 178.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 703.80 ms. Allocated memory is still 201.3 MB. Free memory was 178.0 MB in the beginning and 159.1 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1521.63 ms. Allocated memory is still 201.3 MB. Free memory was 158.4 MB in the beginning and 89.9 MB in the end (delta: 68.5 MB). Peak memory consumption was 68.5 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)=6, 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 sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L28] long long *b = malloc(sizeof(long long)*N); [L30] sum[0] = 0 [L31] i=0 VAL [\old(N)=0, a={-1:0}, b={16908:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={16908:0}, N=1, sum={16910:0}] [L31] COND TRUE i