/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 2 -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 [2020-07-21 16:43:08,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:43:08,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:43:08,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:43:08,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:43:08,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:43:08,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:43:08,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:43:08,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:43:08,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:43:08,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:43:09,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:43:09,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:43:09,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:43:09,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:43:09,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:43:09,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:43:09,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:43:09,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:43:09,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:43:09,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:43:09,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:43:09,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:43:09,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:43:09,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 16:43:09,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:43:09,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:43:09,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:43:09,059 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 16:43:09,080 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:43:09,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:43:09,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:43:09,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:43:09,082 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:43:09,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:43:09,083 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:43:09,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:43:09,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:43:09,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:43:09,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:43:09,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:43:09,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:43:09,084 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:43:09,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:43:09,085 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:43:09,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:43:09,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:43:09,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:43:09,086 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:43:09,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:43:09,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:43:09,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:43:09,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:43:09,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:43:09,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:43:09,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:43:09,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:43:09,088 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:43:09,088 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 -> 2 [2020-07-21 16:43:09,455 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:43:09,470 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:43:09,474 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:43:09,476 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:43:09,476 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:43:09,477 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina4f.c [2020-07-21 16:43:09,561 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bd04d224/7f2f735f15e84b98849e1e8e0e454ed8/FLAG7e4ab1409 [2020-07-21 16:43:10,110 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:43:10,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina4f.c [2020-07-21 16:43:10,119 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bd04d224/7f2f735f15e84b98849e1e8e0e454ed8/FLAG7e4ab1409 [2020-07-21 16:43:10,479 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bd04d224/7f2f735f15e84b98849e1e8e0e454ed8 [2020-07-21 16:43:10,494 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:43:10,498 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:43:10,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:43:10,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:43:10,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:43:10,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:43:10" (1/1) ... [2020-07-21 16:43:10,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a9863fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:10, skipping insertion in model container [2020-07-21 16:43:10,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:43:10" (1/1) ... [2020-07-21 16:43:10,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:43:10,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:43:10,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:43:10,818 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:43:10,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:43:10,963 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:43:10,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:10 WrapperNode [2020-07-21 16:43:10,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:43:10,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:43:10,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:43:10,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:43:10,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:10" (1/1) ... [2020-07-21 16:43:10,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:10" (1/1) ... [2020-07-21 16:43:10,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:10" (1/1) ... [2020-07-21 16:43:10,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:10" (1/1) ... [2020-07-21 16:43:11,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:10" (1/1) ... [2020-07-21 16:43:11,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:10" (1/1) ... [2020-07-21 16:43:11,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:10" (1/1) ... [2020-07-21 16:43:11,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:43:11,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:43:11,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:43:11,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:43:11,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:10" (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 16:43:11,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:43:11,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:43:11,090 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 16:43:11,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 16:43:11,090 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:43:11,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:43:11,091 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 16:43:11,092 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 16:43:11,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 16:43:11,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 16:43:11,093 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 16:43:11,093 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:43:11,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 16:43:11,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 16:43:11,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 16:43:11,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 16:43:11,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 16:43:11,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:43:11,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:43:11,460 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:43:11,460 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 16:43:11,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:43:11 BoogieIcfgContainer [2020-07-21 16:43:11,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:43:11,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:43:11,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:43:11,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:43:11,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:43:10" (1/3) ... [2020-07-21 16:43:11,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8e5af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:43:11, skipping insertion in model container [2020-07-21 16:43:11,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:10" (2/3) ... [2020-07-21 16:43:11,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8e5af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:43:11, skipping insertion in model container [2020-07-21 16:43:11,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:43:11" (3/3) ... [2020-07-21 16:43:11,479 INFO L109 eAbstractionObserver]: Analyzing ICFG sina4f.c [2020-07-21 16:43:11,498 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:43:11,522 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 16:43:11,553 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 16:43:11,579 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:43:11,580 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:43:11,580 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:43:11,580 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:43:11,580 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:43:11,580 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:43:11,581 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:43:11,581 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:43:11,599 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-07-21 16:43:11,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-21 16:43:11,606 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:43:11,607 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] [2020-07-21 16:43:11,608 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:43:11,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:43:11,614 INFO L82 PathProgramCache]: Analyzing trace with hash -173101897, now seen corresponding path program 1 times [2020-07-21 16:43:11,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:43:11,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277422384] [2020-07-21 16:43:11,624 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:43:11,791 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:43:11,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:43:11,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 16:43:11,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:43:11,836 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 16:43:11,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:43:11,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277422384] [2020-07-21 16:43:11,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:43:11,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 16:43:11,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966404814] [2020-07-21 16:43:11,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 16:43:11,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:43:11,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 16:43:11,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 16:43:11,872 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-07-21 16:43:11,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:43:11,902 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2020-07-21 16:43:11,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 16:43:11,904 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2020-07-21 16:43:11,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:43:11,914 INFO L225 Difference]: With dead ends: 70 [2020-07-21 16:43:11,915 INFO L226 Difference]: Without dead ends: 35 [2020-07-21 16:43:11,920 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 [2020-07-21 16:43:11,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-21 16:43:11,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-07-21 16:43:11,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-21 16:43:11,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-07-21 16:43:11,971 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 26 [2020-07-21 16:43:11,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:43:11,972 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-07-21 16:43:11,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 16:43:11,972 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-07-21 16:43:11,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-21 16:43:11,973 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:43:11,974 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] [2020-07-21 16:43:12,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:43:12,189 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:43:12,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:43:12,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1503462707, now seen corresponding path program 1 times [2020-07-21 16:43:12,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:43:12,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981899458] [2020-07-21 16:43:12,193 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:43:12,284 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:43:12,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:43:12,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 16:43:12,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:43:12,351 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 16:43:12,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:43:12,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981899458] [2020-07-21 16:43:12,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:43:12,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 16:43:12,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537973863] [2020-07-21 16:43:12,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 16:43:12,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:43:12,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 16:43:12,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 16:43:12,356 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-07-21 16:43:12,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:43:12,496 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2020-07-21 16:43:12,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 16:43:12,497 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-07-21 16:43:12,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:43:12,501 INFO L225 Difference]: With dead ends: 67 [2020-07-21 16:43:12,502 INFO L226 Difference]: Without dead ends: 47 [2020-07-21 16:43:12,503 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 [2020-07-21 16:43:12,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-07-21 16:43:12,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2020-07-21 16:43:12,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-21 16:43:12,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-07-21 16:43:12,520 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26 [2020-07-21 16:43:12,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:43:12,520 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-07-21 16:43:12,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 16:43:12,521 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-07-21 16:43:12,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-21 16:43:12,522 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:43:12,523 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] [2020-07-21 16:43:12,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:43:12,738 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:43:12,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:43:12,739 INFO L82 PathProgramCache]: Analyzing trace with hash -260192085, now seen corresponding path program 1 times [2020-07-21 16:43:12,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:43:12,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457323562] [2020-07-21 16:43:12,740 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:43:12,827 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:43:12,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 16:43:12,828 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:43:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 16:43:12,854 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:43:12,889 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 16:43:12,890 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 16:43:13,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:43:13,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:43:13 BoogieIcfgContainer [2020-07-21 16:43:13,173 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 16:43:13,176 INFO L168 Benchmark]: Toolchain (without parser) took 2679.30 ms. Allocated memory was 146.3 MB in the beginning and 235.4 MB in the end (delta: 89.1 MB). Free memory was 103.9 MB in the beginning and 206.1 MB in the end (delta: -102.2 MB). Peak memory consumption was 76.5 MB. Max. memory is 7.1 GB. [2020-07-21 16:43:13,177 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 16:43:13,178 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.23 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 103.5 MB in the beginning and 182.9 MB in the end (delta: -79.4 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-07-21 16:43:13,179 INFO L168 Benchmark]: Boogie Preprocessor took 51.17 ms. Allocated memory is still 203.9 MB. Free memory was 182.9 MB in the beginning and 180.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-07-21 16:43:13,180 INFO L168 Benchmark]: RCFGBuilder took 449.81 ms. Allocated memory is still 203.9 MB. Free memory was 180.6 MB in the beginning and 161.5 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-07-21 16:43:13,181 INFO L168 Benchmark]: TraceAbstraction took 1704.63 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 161.5 MB in the beginning and 206.1 MB in the end (delta: -44.6 MB). Peak memory consumption was 76.4 MB. Max. memory is 7.1 GB. [2020-07-21 16:43:13,186 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 465.23 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 103.5 MB in the beginning and 182.9 MB in the end (delta: -79.4 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.17 ms. Allocated memory is still 203.9 MB. Free memory was 182.9 MB in the beginning and 180.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 449.81 ms. Allocated memory is still 203.9 MB. Free memory was 180.6 MB in the beginning and 161.5 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1704.63 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 161.5 MB in the beginning and 206.1 MB in the end (delta: -44.6 MB). Peak memory consumption was 76.4 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)=7, 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={-2:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={-2:0}, N=1, sum={2:0}] [L31] COND TRUE i