/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/indp2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:37:14,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:37:14,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:37:14,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:37:14,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:37:14,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:37:14,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:37:14,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:37:14,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:37:14,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:37:14,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:37:14,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:37:14,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:37:14,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:37:14,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:37:14,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:37:14,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:37:14,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:37:14,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:37:14,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:37:14,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:37:14,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:37:14,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:37:14,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:37:14,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 23:37:14,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:37:14,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:37:14,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:37:14,399 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 [2020-07-19 23:37:14,416 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:37:14,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:37:14,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:37:14,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:37:14,418 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:37:14,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:37:14,419 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:37:14,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:37:14,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:37:14,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:37:14,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:37:14,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:37:14,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:37:14,421 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:37:14,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:37:14,421 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:37:14,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:37:14,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:37:14,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:37:14,422 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:37:14,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:37:14,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:37:14,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:37:14,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:37:14,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:37:14,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:37:14,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:37:14,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:37:14,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:37:14,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-19 23:37:14,705 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:37:14,719 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:37:14,722 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:37:14,723 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:37:14,724 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:37:14,724 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp2f.c [2020-07-19 23:37:14,798 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a448abea/ea3e7cf17ab840fdad1cf7bef37f9fe7/FLAGd1cac37be [2020-07-19 23:37:15,305 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:37:15,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp2f.c [2020-07-19 23:37:15,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a448abea/ea3e7cf17ab840fdad1cf7bef37f9fe7/FLAGd1cac37be [2020-07-19 23:37:15,714 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a448abea/ea3e7cf17ab840fdad1cf7bef37f9fe7 [2020-07-19 23:37:15,722 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:37:15,725 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:37:15,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:37:15,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:37:15,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:37:15,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:37:15" (1/1) ... [2020-07-19 23:37:15,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ebf14e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:37:15, skipping insertion in model container [2020-07-19 23:37:15,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:37:15" (1/1) ... [2020-07-19 23:37:15,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:37:15,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:37:15,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:37:15,944 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:37:15,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:37:15,978 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:37:15,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:37:15 WrapperNode [2020-07-19 23:37:15,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:37:15,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:37:15,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:37:15,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:37:16,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:37:15" (1/1) ... [2020-07-19 23:37:16,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:37:15" (1/1) ... [2020-07-19 23:37:16,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:37:15" (1/1) ... [2020-07-19 23:37:16,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:37:15" (1/1) ... [2020-07-19 23:37:16,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:37:15" (1/1) ... [2020-07-19 23:37:16,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:37:15" (1/1) ... [2020-07-19 23:37:16,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:37:15" (1/1) ... [2020-07-19 23:37:16,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:37:16,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:37:16,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:37:16,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:37:16,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:37:15" (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 [2020-07-19 23:37:16,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:37:16,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:37:16,163 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-19 23:37:16,163 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 23:37:16,163 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:37:16,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:37:16,164 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 23:37:16,164 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-19 23:37:16,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 23:37:16,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 23:37:16,164 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 23:37:16,164 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:37:16,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-19 23:37:16,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 23:37:16,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 23:37:16,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:37:16,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:37:16,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 23:37:16,434 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:37:16,434 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-19 23:37:16,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:37:16 BoogieIcfgContainer [2020-07-19 23:37:16,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:37:16,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:37:16,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:37:16,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:37:16,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:37:15" (1/3) ... [2020-07-19 23:37:16,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3fc5f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:37:16, skipping insertion in model container [2020-07-19 23:37:16,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:37:15" (2/3) ... [2020-07-19 23:37:16,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3fc5f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:37:16, skipping insertion in model container [2020-07-19 23:37:16,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:37:16" (3/3) ... [2020-07-19 23:37:16,447 INFO L109 eAbstractionObserver]: Analyzing ICFG indp2f.c [2020-07-19 23:37:16,458 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:37:16,465 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:37:16,479 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:37:16,505 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:37:16,505 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:37:16,505 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:37:16,505 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:37:16,506 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:37:16,506 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:37:16,506 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:37:16,506 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:37:16,530 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-07-19 23:37:16,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-19 23:37:16,543 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:37:16,544 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] [2020-07-19 23:37:16,545 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:37:16,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:37:16,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1155719453, now seen corresponding path program 1 times [2020-07-19 23:37:16,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:37:16,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201675970] [2020-07-19 23:37:16,563 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@24b81549 [2020-07-19 23:37:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:37:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:37:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:37:16,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:37:16,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201675970] [2020-07-19 23:37:16,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:37:16,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 23:37:16,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220269885] [2020-07-19 23:37:16,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 23:37:16,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:37:16,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 23:37:16,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 23:37:16,829 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-07-19 23:37:16,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:37:16,945 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-07-19 23:37:16,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 23:37:16,947 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-19 23:37:16,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:37:16,956 INFO L225 Difference]: With dead ends: 64 [2020-07-19 23:37:16,957 INFO L226 Difference]: Without dead ends: 32 [2020-07-19 23:37:16,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 23:37:16,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-19 23:37:16,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-07-19 23:37:16,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-19 23:37:17,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-07-19 23:37:17,002 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-07-19 23:37:17,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:37:17,002 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-07-19 23:37:17,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 23:37:17,003 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-07-19 23:37:17,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-19 23:37:17,004 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:37:17,004 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] [2020-07-19 23:37:17,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:37:17,005 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:37:17,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:37:17,006 INFO L82 PathProgramCache]: Analyzing trace with hash -124144225, now seen corresponding path program 1 times [2020-07-19 23:37:17,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:37:17,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079655824] [2020-07-19 23:37:17,007 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@24b81549 [2020-07-19 23:37:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:37:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:37:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:37:17,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:37:17,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079655824] [2020-07-19 23:37:17,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:37:17,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 23:37:17,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532974262] [2020-07-19 23:37:17,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 23:37:17,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:37:17,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 23:37:17,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-19 23:37:17,128 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 5 states. [2020-07-19 23:37:17,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:37:17,266 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-07-19 23:37:17,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 23:37:17,266 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-07-19 23:37:17,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:37:17,269 INFO L225 Difference]: With dead ends: 59 [2020-07-19 23:37:17,269 INFO L226 Difference]: Without dead ends: 42 [2020-07-19 23:37:17,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:37:17,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-19 23:37:17,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2020-07-19 23:37:17,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-19 23:37:17,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-07-19 23:37:17,285 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2020-07-19 23:37:17,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:37:17,285 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-07-19 23:37:17,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 23:37:17,286 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-07-19 23:37:17,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-19 23:37:17,287 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:37:17,287 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] [2020-07-19 23:37:17,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 23:37:17,288 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:37:17,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:37:17,288 INFO L82 PathProgramCache]: Analyzing trace with hash -191015719, now seen corresponding path program 1 times [2020-07-19 23:37:17,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:37:17,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918805420] [2020-07-19 23:37:17,289 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@24b81549 [2020-07-19 23:37:17,305 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 23:37:17,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2045348544] [2020-07-19 23:37:17,306 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4176f1b3 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:37:17,388 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4176f1b3 issued 4 check-sat command(s) [2020-07-19 23:37:17,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-19 23:37:17,389 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 23:37:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 23:37:17,407 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 23:37:17,433 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-19 23:37:17,433 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 23:37:17,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-19 23:37:17,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 11:37:17 BoogieIcfgContainer [2020-07-19 23:37:17,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 23:37:17,695 INFO L168 Benchmark]: Toolchain (without parser) took 1969.68 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 102.8 MB in the beginning and 90.3 MB in the end (delta: 12.5 MB). Peak memory consumption was 76.0 MB. Max. memory is 7.1 GB. [2020-07-19 23:37:17,696 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-19 23:37:17,696 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.61 ms. Allocated memory is still 138.4 MB. Free memory was 102.4 MB in the beginning and 92.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-19 23:37:17,698 INFO L168 Benchmark]: Boogie Preprocessor took 114.81 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 92.0 MB in the beginning and 179.9 MB in the end (delta: -87.9 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-19 23:37:17,699 INFO L168 Benchmark]: RCFGBuilder took 344.41 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 161.7 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. [2020-07-19 23:37:17,699 INFO L168 Benchmark]: TraceAbstraction took 1251.89 ms. Allocated memory is still 201.9 MB. Free memory was 161.7 MB in the beginning and 90.3 MB in the end (delta: 71.5 MB). Peak memory consumption was 71.5 MB. Max. memory is 7.1 GB. [2020-07-19 23:37:17,704 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 253.61 ms. Allocated memory is still 138.4 MB. Free memory was 102.4 MB in the beginning and 92.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.81 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 92.0 MB in the beginning and 179.9 MB in the end (delta: -87.9 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 344.41 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 161.7 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1251.89 ms. Allocated memory is still 201.9 MB. Free memory was 161.7 MB in the beginning and 90.3 MB in the end (delta: 71.5 MB). Peak memory consumption was 71.5 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)=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); [L28] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, N=1] [L28] COND TRUE i