/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/indp4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:56:27,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:56:27,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:56:27,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:56:27,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:56:27,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:56:27,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:56:27,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:56:27,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:56:27,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:56:27,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:56:27,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:56:27,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:56:27,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:56:27,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:56:27,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:56:27,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:56:27,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:56:27,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:56:27,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:56:27,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:56:27,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:56:27,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:56:27,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:56:27,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:56:27,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:56:27,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:56:27,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:56:27,958 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 [2020-08-22 16:56:27,994 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:56:27,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:56:27,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:56:27,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:56:27,996 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:56:27,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:56:27,997 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:56:27,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:56:27,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:56:27,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:56:27,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:56:27,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:56:27,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:56:28,000 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:56:28,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:56:28,001 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:56:28,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:56:28,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:56:28,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:56:28,001 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:56:28,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:56:28,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:56:28,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:56:28,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:56:28,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:56:28,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:56:28,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:56:28,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:56:28,003 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:56:28,004 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:56:28,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:56:28,339 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:56:28,341 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:56:28,343 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:56:28,343 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:56:28,344 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp4f.c [2020-08-22 16:56:28,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e94beeaea/12b86ea204cb4374b72242b6254e3dec/FLAGd0c92e15e [2020-08-22 16:56:28,860 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:56:28,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp4f.c [2020-08-22 16:56:28,867 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e94beeaea/12b86ea204cb4374b72242b6254e3dec/FLAGd0c92e15e [2020-08-22 16:56:29,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e94beeaea/12b86ea204cb4374b72242b6254e3dec [2020-08-22 16:56:29,261 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:56:29,263 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:56:29,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:29,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:56:29,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:56:29,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:29" (1/1) ... [2020-08-22 16:56:29,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bfa12c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:29, skipping insertion in model container [2020-08-22 16:56:29,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:29" (1/1) ... [2020-08-22 16:56:29,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:56:29,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:56:29,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:29,483 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:56:29,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:29,602 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:56:29,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:29 WrapperNode [2020-08-22 16:56:29,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:29,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:56:29,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:56:29,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:56:29,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:29" (1/1) ... [2020-08-22 16:56:29,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:29" (1/1) ... [2020-08-22 16:56:29,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:29" (1/1) ... [2020-08-22 16:56:29,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:29" (1/1) ... [2020-08-22 16:56:29,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:29" (1/1) ... [2020-08-22 16:56:29,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:29" (1/1) ... [2020-08-22 16:56:29,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:29" (1/1) ... [2020-08-22 16:56:29,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:56:29,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:56:29,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:56:29,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:56:29,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:29" (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 [2020-08-22 16:56:29,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:56:29,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:56:29,718 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 16:56:29,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:56:29,718 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:56:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:56:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:56:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 16:56:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:56:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:56:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 16:56:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:56:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 16:56:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:56:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:56:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:56:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:56:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:56:29,983 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:56:29,983 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 16:56:29,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:29 BoogieIcfgContainer [2020-08-22 16:56:29,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:56:29,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:56:29,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:56:29,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:56:29,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:56:29" (1/3) ... [2020-08-22 16:56:29,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d86114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:29, skipping insertion in model container [2020-08-22 16:56:30,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:29" (2/3) ... [2020-08-22 16:56:30,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d86114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:30, skipping insertion in model container [2020-08-22 16:56:30,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:29" (3/3) ... [2020-08-22 16:56:30,008 INFO L109 eAbstractionObserver]: Analyzing ICFG indp4f.c [2020-08-22 16:56:30,028 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:56:30,042 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:56:30,074 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:56:30,130 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:56:30,130 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:56:30,130 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:56:30,130 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:56:30,131 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:56:30,131 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:56:30,131 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:56:30,131 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:56:30,153 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-22 16:56:30,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 16:56:30,161 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:30,162 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] [2020-08-22 16:56:30,163 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:30,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:30,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1155719453, now seen corresponding path program 1 times [2020-08-22 16:56:30,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:30,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410543452] [2020-08-22 16:56:30,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:30,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:30,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:56:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:30,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:56:30,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410543452] [2020-08-22 16:56:30,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:30,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 16:56:30,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453449983] [2020-08-22 16:56:30,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 16:56:30,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:30,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 16:56:30,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:56:30,409 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-08-22 16:56:30,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:30,540 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-08-22 16:56:30,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:56:30,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-08-22 16:56:30,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:30,552 INFO L225 Difference]: With dead ends: 64 [2020-08-22 16:56:30,552 INFO L226 Difference]: Without dead ends: 32 [2020-08-22 16:56:30,556 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 [2020-08-22 16:56:30,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-22 16:56:30,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-08-22 16:56:30,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-22 16:56:30,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-08-22 16:56:30,595 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-08-22 16:56:30,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:30,596 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-08-22 16:56:30,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 16:56:30,596 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-08-22 16:56:30,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 16:56:30,597 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:30,597 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] [2020-08-22 16:56:30,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:56:30,598 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:30,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:30,599 INFO L82 PathProgramCache]: Analyzing trace with hash -124144225, now seen corresponding path program 1 times [2020-08-22 16:56:30,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:30,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325061587] [2020-08-22 16:56:30,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:30,625 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:56:30,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [178748226] [2020-08-22 16:56:30,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-08-22 16:56:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:30,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2020-08-22 16:56:30,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:56:30,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:56:30,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325061587] [2020-08-22 16:56:30,796 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-08-22 16:56:30,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178748226] [2020-08-22 16:56:30,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:30,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:56:30,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702271385] [2020-08-22 16:56:30,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:56:30,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:30,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:56:30,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:56:30,800 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 4 states. [2020-08-22 16:56:30,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:30,891 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-08-22 16:56:30,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:56:30,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-22 16:56:30,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:30,895 INFO L225 Difference]: With dead ends: 59 [2020-08-22 16:56:30,895 INFO L226 Difference]: Without dead ends: 42 [2020-08-22 16:56:30,896 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 [2020-08-22 16:56:30,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-22 16:56:30,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2020-08-22 16:56:30,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-22 16:56:30,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-08-22 16:56:30,911 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2020-08-22 16:56:30,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:30,912 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-08-22 16:56:30,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:56:30,912 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-08-22 16:56:30,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 16:56:30,913 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:30,914 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] [2020-08-22 16:56:31,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-08-22 16:56:31,130 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:31,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:31,131 INFO L82 PathProgramCache]: Analyzing trace with hash -191015719, now seen corresponding path program 1 times [2020-08-22 16:56:31,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:31,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111235827] [2020-08-22 16:56:31,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:31,149 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:56:31,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404466554] [2020-08-22 16:56:31,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-08-22 16:56:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:31,211 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:31,232 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:31,258 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:56:31,258 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:56:31,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:56:31,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:56:31 BoogieIcfgContainer [2020-08-22 16:56:31,518 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:56:31,521 INFO L168 Benchmark]: Toolchain (without parser) took 2257.65 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 100.0 MB in the beginning and 90.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 72.4 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:31,522 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 16:56:31,523 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.76 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 99.8 MB in the beginning and 179.1 MB in the end (delta: -79.4 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:31,524 INFO L168 Benchmark]: Boogie Preprocessor took 38.30 ms. Allocated memory is still 200.3 MB. Free memory was 179.1 MB in the beginning and 177.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:31,525 INFO L168 Benchmark]: RCFGBuilder took 346.88 ms. Allocated memory is still 200.3 MB. Free memory was 176.6 MB in the beginning and 159.1 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:31,526 INFO L168 Benchmark]: TraceAbstraction took 1526.56 ms. Allocated memory is still 200.3 MB. Free memory was 159.1 MB in the beginning and 90.5 MB in the end (delta: 68.6 MB). Peak memory consumption was 68.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:31,530 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 340.76 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 99.8 MB in the beginning and 179.1 MB in the end (delta: -79.4 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.30 ms. Allocated memory is still 200.3 MB. Free memory was 179.1 MB in the beginning and 177.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 346.88 ms. Allocated memory is still 200.3 MB. Free memory was 176.6 MB in the beginning and 159.1 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1526.56 ms. Allocated memory is still 200.3 MB. Free memory was 159.1 MB in the beginning and 90.5 MB in the end (delta: 68.6 MB). Peak memory consumption was 68.6 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