/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_VARIABLES --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/indp4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 01:46:44,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:46:44,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:46:44,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 01:46:44,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 01:46:44,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 01:46:44,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 01:46:44,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 01:46:44,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 01:46:44,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 01:46:44,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 01:46:44,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 01:46:44,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:46:44,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:46:44,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:46:44,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:46:44,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:46:44,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:46:44,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:46:44,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:46:44,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:46:44,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:46:44,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:46:44,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:46:44,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 01:46:44,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:46:44,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:46:44,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:46:44,998 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 01:46:45,013 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:46:45,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:46:45,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:46:45,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:46:45,015 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:46:45,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:46:45,016 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:46:45,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:46:45,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:46:45,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:46:45,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:46:45,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:46:45,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:46:45,017 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:46:45,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:46:45,018 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:46:45,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:46:45,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:46:45,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:46:45,019 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:46:45,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:46:45,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:46:45,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:46:45,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:46:45,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:46:45,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:46:45,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:46:45,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:46:45,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:46:45,021 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_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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 01:46:45,307 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:46:45,321 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:46:45,325 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:46:45,327 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:46:45,328 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:46:45,328 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp4f.c [2020-07-20 01:46:45,395 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cc93de79/01e0e06b10164342be1d5b35761eafb3/FLAGc21dc147f [2020-07-20 01:46:45,865 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:46:45,866 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp4f.c [2020-07-20 01:46:45,874 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cc93de79/01e0e06b10164342be1d5b35761eafb3/FLAGc21dc147f [2020-07-20 01:46:46,209 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cc93de79/01e0e06b10164342be1d5b35761eafb3 [2020-07-20 01:46:46,221 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:46:46,224 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:46:46,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:46:46,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:46:46,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:46:46,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:46:46" (1/1) ... [2020-07-20 01:46:46,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23586941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:46, skipping insertion in model container [2020-07-20 01:46:46,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:46:46" (1/1) ... [2020-07-20 01:46:46,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:46:46,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:46:46,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:46:46,473 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:46:46,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:46:46,506 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:46:46,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:46 WrapperNode [2020-07-20 01:46:46,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:46:46,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:46:46,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:46:46,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:46:46,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:46" (1/1) ... [2020-07-20 01:46:46,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:46" (1/1) ... [2020-07-20 01:46:46,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:46" (1/1) ... [2020-07-20 01:46:46,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:46" (1/1) ... [2020-07-20 01:46:46,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:46" (1/1) ... [2020-07-20 01:46:46,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:46" (1/1) ... [2020-07-20 01:46:46,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:46" (1/1) ... [2020-07-20 01:46:46,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:46:46,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:46:46,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:46:46,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:46:46,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:46" (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 01:46:46,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:46:46,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:46:46,702 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 01:46:46,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 01:46:46,703 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:46:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:46:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 01:46:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 01:46:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 01:46:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 01:46:46,704 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 01:46:46,704 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:46:46,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 01:46:46,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 01:46:46,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 01:46:46,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:46:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:46:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 01:46:47,050 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:46:47,051 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-20 01:46:47,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:46:47 BoogieIcfgContainer [2020-07-20 01:46:47,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:46:47,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:46:47,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:46:47,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:46:47,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:46:46" (1/3) ... [2020-07-20 01:46:47,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e56580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:46:47, skipping insertion in model container [2020-07-20 01:46:47,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:46" (2/3) ... [2020-07-20 01:46:47,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e56580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:46:47, skipping insertion in model container [2020-07-20 01:46:47,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:46:47" (3/3) ... [2020-07-20 01:46:47,064 INFO L109 eAbstractionObserver]: Analyzing ICFG indp4f.c [2020-07-20 01:46:47,074 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:46:47,080 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:46:47,093 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:46:47,116 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:46:47,116 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:46:47,116 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:46:47,117 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:46:47,117 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:46:47,117 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:46:47,117 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:46:47,117 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:46:47,135 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-07-20 01:46:47,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 01:46:47,141 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:46:47,142 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] [2020-07-20 01:46:47,143 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:46:47,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:46:47,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1155719453, now seen corresponding path program 1 times [2020-07-20 01:46:47,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:46:47,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170429519] [2020-07-20 01:46:47,157 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5f33867b [2020-07-20 01:46:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:46:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:46:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:46:47,442 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 01:46:47,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170429519] [2020-07-20 01:46:47,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:46:47,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 01:46:47,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380126377] [2020-07-20 01:46:47,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 01:46:47,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:46:47,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 01:46:47,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 01:46:47,477 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-07-20 01:46:47,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:46:47,626 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-07-20 01:46:47,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 01:46:47,629 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-20 01:46:47,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:46:47,638 INFO L225 Difference]: With dead ends: 64 [2020-07-20 01:46:47,639 INFO L226 Difference]: Without dead ends: 32 [2020-07-20 01:46:47,644 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 [2020-07-20 01:46:47,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-20 01:46:47,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-07-20 01:46:47,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-20 01:46:47,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-07-20 01:46:47,691 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-07-20 01:46:47,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:46:47,691 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-07-20 01:46:47,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 01:46:47,692 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-07-20 01:46:47,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 01:46:47,693 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:46:47,693 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] [2020-07-20 01:46:47,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:46:47,694 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:46:47,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:46:47,695 INFO L82 PathProgramCache]: Analyzing trace with hash -124144225, now seen corresponding path program 1 times [2020-07-20 01:46:47,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:46:47,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457163908] [2020-07-20 01:46:47,696 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5f33867b [2020-07-20 01:46:47,719 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 01:46:47,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1441201309] [2020-07-20 01:46:47,720 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@51e8fabb No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:46:47,819 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@51e8fabb issued 2 check-sat command(s) [2020-07-20 01:46:47,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:46:47,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 01:46:47,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:46:47,878 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 01:46:47,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457163908] [2020-07-20 01:46:47,879 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 01:46:47,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441201309] [2020-07-20 01:46:47,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:46:47,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 01:46:47,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613238785] [2020-07-20 01:46:47,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 01:46:47,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:46:47,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 01:46:47,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:46:47,883 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 4 states. [2020-07-20 01:46:47,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:46:47,985 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-07-20 01:46:47,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 01:46:47,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-07-20 01:46:47,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:46:47,989 INFO L225 Difference]: With dead ends: 59 [2020-07-20 01:46:47,989 INFO L226 Difference]: Without dead ends: 42 [2020-07-20 01:46:47,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 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 01:46:47,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-20 01:46:48,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2020-07-20 01:46:48,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-20 01:46:48,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-07-20 01:46:48,005 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2020-07-20 01:46:48,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:46:48,006 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-07-20 01:46:48,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 01:46:48,006 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-07-20 01:46:48,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 01:46:48,007 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:46:48,007 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] [2020-07-20 01:46:48,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-20 01:46:48,221 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:46:48,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:46:48,222 INFO L82 PathProgramCache]: Analyzing trace with hash -191015719, now seen corresponding path program 1 times [2020-07-20 01:46:48,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:46:48,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897368655] [2020-07-20 01:46:48,223 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5f33867b [2020-07-20 01:46:48,239 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 01:46:48,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1418327694] [2020-07-20 01:46:48,240 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@76d4fbb0 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:46:48,323 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@76d4fbb0 issued 4 check-sat command(s) [2020-07-20 01:46:48,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 01:46:48,324 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:46:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 01:46:48,345 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:46:48,379 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 01:46:48,379 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 01:46:48,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:46:48,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:46:48 BoogieIcfgContainer [2020-07-20 01:46:48,636 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:46:48,639 INFO L168 Benchmark]: Toolchain (without parser) took 2415.59 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 101.1 MB in the beginning and 93.2 MB in the end (delta: 7.9 MB). Peak memory consumption was 72.3 MB. Max. memory is 7.1 GB. [2020-07-20 01:46:48,640 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 136.8 MB. Free memory is still 119.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 01:46:48,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.07 ms. Allocated memory is still 136.8 MB. Free memory was 100.6 MB in the beginning and 90.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-20 01:46:48,642 INFO L168 Benchmark]: Boogie Preprocessor took 121.45 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 90.5 MB in the beginning and 178.4 MB in the end (delta: -87.8 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-07-20 01:46:48,643 INFO L168 Benchmark]: RCFGBuilder took 425.58 ms. Allocated memory is still 201.3 MB. Free memory was 178.4 MB in the beginning and 161.6 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2020-07-20 01:46:48,644 INFO L168 Benchmark]: TraceAbstraction took 1579.96 ms. Allocated memory is still 201.3 MB. Free memory was 160.6 MB in the beginning and 93.2 MB in the end (delta: 67.4 MB). Peak memory consumption was 67.4 MB. Max. memory is 7.1 GB. [2020-07-20 01:46:48,648 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 136.8 MB. Free memory is still 119.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 283.07 ms. Allocated memory is still 136.8 MB. Free memory was 100.6 MB in the beginning and 90.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.45 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 90.5 MB in the beginning and 178.4 MB in the end (delta: -87.8 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 425.58 ms. Allocated memory is still 201.3 MB. Free memory was 178.4 MB in the beginning and 161.6 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1579.96 ms. Allocated memory is still 201.3 MB. Free memory was 160.6 MB in the beginning and 93.2 MB in the end (delta: 67.4 MB). Peak memory consumption was 67.4 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)=3, 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