/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/sqmf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:56:50,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:56:50,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:56:50,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:56:50,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:56:50,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:56:50,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:56:50,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:56:50,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:56:50,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:56:50,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:56:50,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:56:50,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:56:50,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:56:50,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:56:50,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:56:50,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:56:50,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:56:50,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:56:50,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:56:50,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:56:50,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:56:50,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:56:50,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:56:50,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:56:50,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 16:56:50,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 16:56:50,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 16:56:50,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 16:56:50,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 16:56:50,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 16:56:50,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 16:56:50,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 16:56:50,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:56:50,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:56:50,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:56:50,932 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 16:56:50,956 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:56:50,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:56:50,957 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:56:50,958 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:56:50,958 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:56:50,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:56:50,958 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:56:50,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:56:50,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:56:50,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:56:50,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:56:50,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:56:50,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:56:50,960 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:56:50,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:56:50,960 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:56:50,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:56:50,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:56:50,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:56:50,961 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:56:50,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:56:50,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:56:50,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:56:50,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:56:50,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:56:50,962 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:56:50,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:56:50,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:56:50,963 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:56:50,963 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:56:51,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:56:51,277 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:56:51,280 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:56:51,282 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:56:51,282 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:56:51,283 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sqmf.c [2020-08-22 16:56:51,356 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/467b95dcf/f7447a3146ff42919cc2fff60e94db22/FLAGea0b6292d [2020-08-22 16:56:51,783 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:56:51,784 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sqmf.c [2020-08-22 16:56:51,789 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/467b95dcf/f7447a3146ff42919cc2fff60e94db22/FLAGea0b6292d [2020-08-22 16:56:52,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/467b95dcf/f7447a3146ff42919cc2fff60e94db22 [2020-08-22 16:56:52,172 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:56:52,174 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:56:52,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:52,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:56:52,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:56:52,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:52" (1/1) ... [2020-08-22 16:56:52,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@592fd428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:52, skipping insertion in model container [2020-08-22 16:56:52,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:52" (1/1) ... [2020-08-22 16:56:52,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:56:52,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:56:52,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:52,423 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:56:52,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:52,456 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:56:52,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:52 WrapperNode [2020-08-22 16:56:52,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:52,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:56:52,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:56:52,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:56:52,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:52" (1/1) ... [2020-08-22 16:56:52,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:52" (1/1) ... [2020-08-22 16:56:52,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:52" (1/1) ... [2020-08-22 16:56:52,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:52" (1/1) ... [2020-08-22 16:56:52,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:52" (1/1) ... [2020-08-22 16:56:52,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:52" (1/1) ... [2020-08-22 16:56:52,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:52" (1/1) ... [2020-08-22 16:56:52,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:56:52,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:56:52,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:56:52,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:56:52,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:52" (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 16:56:52,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:56:52,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:56:52,646 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 16:56:52,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:56:52,646 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:56:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:56:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:56:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 16:56:52,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:56:52,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:56:52,647 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 16:56:52,647 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:56:52,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 16:56:52,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:56:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:56:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:56:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:56:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:56:52,914 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:56:52,915 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-22 16:56:52,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:52 BoogieIcfgContainer [2020-08-22 16:56:52,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:56:52,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:56:52,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:56:52,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:56:52,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:56:52" (1/3) ... [2020-08-22 16:56:52,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ad18cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:52, skipping insertion in model container [2020-08-22 16:56:52,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:52" (2/3) ... [2020-08-22 16:56:52,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ad18cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:52, skipping insertion in model container [2020-08-22 16:56:52,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:52" (3/3) ... [2020-08-22 16:56:52,929 INFO L109 eAbstractionObserver]: Analyzing ICFG sqmf.c [2020-08-22 16:56:52,945 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:56:52,953 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:56:52,972 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:56:53,003 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:56:53,004 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:56:53,004 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:56:53,004 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:56:53,004 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:56:53,004 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:56:53,005 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:56:53,005 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:56:53,027 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-08-22 16:56:53,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 16:56:53,034 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:53,035 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] [2020-08-22 16:56:53,035 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:53,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:53,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-08-22 16:56:53,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:53,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345038452] [2020-08-22 16:56:53,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:53,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:53,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:56:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:53,269 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 16:56:53,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345038452] [2020-08-22 16:56:53,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:53,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 16:56:53,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091915875] [2020-08-22 16:56:53,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 16:56:53,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:53,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 16:56:53,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:56:53,292 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-08-22 16:56:53,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:53,422 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-08-22 16:56:53,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:56:53,424 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-22 16:56:53,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:53,434 INFO L225 Difference]: With dead ends: 58 [2020-08-22 16:56:53,434 INFO L226 Difference]: Without dead ends: 29 [2020-08-22 16:56:53,438 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 16:56:53,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-22 16:56:53,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-08-22 16:56:53,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-22 16:56:53,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-08-22 16:56:53,484 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-08-22 16:56:53,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:53,485 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-08-22 16:56:53,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 16:56:53,485 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-08-22 16:56:53,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 16:56:53,487 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:53,487 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] [2020-08-22 16:56:53,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:56:53,488 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:53,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:53,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-08-22 16:56:53,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:53,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278879554] [2020-08-22 16:56:53,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:53,517 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:56:53,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124633574] [2020-08-22 16:56:53,518 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 16:56:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:53,581 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:53,599 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:53,626 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:56:53,626 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:56:53,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-08-22 16:56:53,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:56:53 BoogieIcfgContainer [2020-08-22 16:56:53,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:56:53,880 INFO L168 Benchmark]: Toolchain (without parser) took 1705.30 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 104.6 MB in the beginning and 121.0 MB in the end (delta: -16.4 MB). Peak memory consumption was 46.0 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:53,881 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 16:56:53,882 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.37 ms. Allocated memory is still 141.6 MB. Free memory was 104.4 MB in the beginning and 94.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:53,883 INFO L168 Benchmark]: Boogie Preprocessor took 120.46 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 94.1 MB in the beginning and 181.3 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:53,884 INFO L168 Benchmark]: RCFGBuilder took 342.36 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 164.3 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:53,885 INFO L168 Benchmark]: TraceAbstraction took 954.64 ms. Allocated memory is still 203.9 MB. Free memory was 163.7 MB in the beginning and 121.0 MB in the end (delta: 42.7 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:53,889 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 282.37 ms. Allocated memory is still 141.6 MB. Free memory was 104.4 MB in the beginning and 94.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.46 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 94.1 MB in the beginning and 181.3 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 342.36 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 164.3 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 954.64 ms. Allocated memory is still 203.9 MB. Free memory was 163.7 MB in the beginning and 121.0 MB in the end (delta: 42.7 MB). Peak memory consumption was 42.7 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); [L27] long long *b = malloc(sizeof(long long)*N); [L29] b[0] = 0 [L30] a[0] = 0 [L32] i=1 VAL [\old(N)=0, a={-2:0}, b={-1:0}, i=1, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={-2:0}, N=1] [L32] COND FALSE !(i