/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/modpf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 12:14:54,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 12:14:54,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 12:14:54,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 12:14:54,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 12:14:54,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 12:14:54,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 12:14:54,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 12:14:54,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 12:14:54,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 12:14:54,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 12:14:54,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 12:14:54,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 12:14:54,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 12:14:54,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 12:14:54,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 12:14:54,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 12:14:54,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 12:14:54,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 12:14:54,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 12:14:54,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 12:14:54,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 12:14:54,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 12:14:54,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 12:14:54,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 12:14:54,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 12:14:54,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 12:14:54,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 12:14:54,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 12:14:54,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 12:14:54,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 12:14:54,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 12:14:54,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 12:14:54,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 12:14:54,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 12:14:54,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 12:14:54,377 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 [2020-07-17 12:14:54,406 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 12:14:54,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 12:14:54,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 12:14:54,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 12:14:54,410 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 12:14:54,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 12:14:54,411 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 12:14:54,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 12:14:54,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 12:14:54,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 12:14:54,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 12:14:54,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 12:14:54,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 12:14:54,414 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 12:14:54,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 12:14:54,414 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 12:14:54,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 12:14:54,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 12:14:54,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 12:14:54,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 12:14:54,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 12:14:54,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:14:54,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 12:14:54,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 12:14:54,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 12:14:54,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 12:14:54,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 12:14:54,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 12:14:54,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 12:14:54,417 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 12:14:54,826 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 12:14:54,840 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 12:14:54,844 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 12:14:54,848 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 12:14:54,848 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 12:14:54,849 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modpf.c [2020-07-17 12:14:54,942 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a6be40fb/0a203caf0baa4ed6b32d558614432a08/FLAGa8554bd0a [2020-07-17 12:14:55,439 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 12:14:55,443 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/modpf.c [2020-07-17 12:14:55,451 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a6be40fb/0a203caf0baa4ed6b32d558614432a08/FLAGa8554bd0a [2020-07-17 12:14:55,817 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a6be40fb/0a203caf0baa4ed6b32d558614432a08 [2020-07-17 12:14:55,826 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 12:14:55,830 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 12:14:55,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 12:14:55,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 12:14:55,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 12:14:55,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:14:55" (1/1) ... [2020-07-17 12:14:55,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@748f1e15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:55, skipping insertion in model container [2020-07-17 12:14:55,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:14:55" (1/1) ... [2020-07-17 12:14:55,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 12:14:55,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 12:14:56,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:14:56,126 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 12:14:56,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:14:56,355 INFO L208 MainTranslator]: Completed translation [2020-07-17 12:14:56,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:56 WrapperNode [2020-07-17 12:14:56,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 12:14:56,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 12:14:56,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 12:14:56,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 12:14:56,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:56" (1/1) ... [2020-07-17 12:14:56,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:56" (1/1) ... [2020-07-17 12:14:56,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:56" (1/1) ... [2020-07-17 12:14:56,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:56" (1/1) ... [2020-07-17 12:14:56,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:56" (1/1) ... [2020-07-17 12:14:56,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:56" (1/1) ... [2020-07-17 12:14:56,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:56" (1/1) ... [2020-07-17 12:14:56,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 12:14:56,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 12:14:56,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 12:14:56,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 12:14:56,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:56" (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 [2020-07-17 12:14:56,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 12:14:56,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 12:14:56,530 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 12:14:56,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 12:14:56,530 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 12:14:56,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 12:14:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 12:14:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 12:14:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 12:14:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 12:14:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 12:14:56,532 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 12:14:56,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 12:14:56,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 12:14:56,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 12:14:56,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 12:14:56,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 12:14:56,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 12:14:56,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 12:14:56,840 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 12:14:56,840 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-17 12:14:56,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:14:56 BoogieIcfgContainer [2020-07-17 12:14:56,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 12:14:56,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 12:14:56,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 12:14:56,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 12:14:56,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 12:14:55" (1/3) ... [2020-07-17 12:14:56,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6265611e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:14:56, skipping insertion in model container [2020-07-17 12:14:56,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:56" (2/3) ... [2020-07-17 12:14:56,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6265611e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:14:56, skipping insertion in model container [2020-07-17 12:14:56,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:14:56" (3/3) ... [2020-07-17 12:14:56,856 INFO L109 eAbstractionObserver]: Analyzing ICFG modpf.c [2020-07-17 12:14:56,871 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 12:14:56,878 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 12:14:56,893 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 12:14:56,938 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 12:14:56,938 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 12:14:56,939 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 12:14:56,939 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 12:14:56,942 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 12:14:56,942 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 12:14:56,942 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 12:14:56,942 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 12:14:56,970 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-07-17 12:14:56,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-17 12:14:56,977 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:14:56,978 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] [2020-07-17 12:14:56,978 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:14:56,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:14:56,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-07-17 12:14:56,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:14:56,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655359314] [2020-07-17 12:14:56,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:14:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:14:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:14:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:14:57,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:14:57,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655359314] [2020-07-17 12:14:57,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:14:57,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 12:14:57,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576647719] [2020-07-17 12:14:57,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 12:14:57,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:14:57,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 12:14:57,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 12:14:57,253 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-07-17 12:14:57,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:14:57,385 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-07-17 12:14:57,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 12:14:57,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-17 12:14:57,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:14:57,399 INFO L225 Difference]: With dead ends: 58 [2020-07-17 12:14:57,399 INFO L226 Difference]: Without dead ends: 29 [2020-07-17 12:14:57,403 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 [2020-07-17 12:14:57,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-17 12:14:57,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-17 12:14:57,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-17 12:14:57,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-07-17 12:14:57,445 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-07-17 12:14:57,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:14:57,445 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-07-17 12:14:57,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 12:14:57,446 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-07-17 12:14:57,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-17 12:14:57,446 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:14:57,447 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] [2020-07-17 12:14:57,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 12:14:57,447 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:14:57,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:14:57,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-07-17 12:14:57,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:14:57,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790613207] [2020-07-17 12:14:57,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:14:57,479 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-17 12:14:57,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663384912] [2020-07-17 12:14:57,480 INFO L94 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 [2020-07-17 12:14:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:14:57,585 INFO L264 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-17 12:14:57,591 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:14:57,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:14:57,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790613207] [2020-07-17 12:14:57,663 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-17 12:14:57,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663384912] [2020-07-17 12:14:57,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:14:57,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:14:57,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691174258] [2020-07-17 12:14:57,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:14:57,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:14:57,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:14:57,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:14:57,669 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 4 states. [2020-07-17 12:14:57,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:14:57,757 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-07-17 12:14:57,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 12:14:57,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-07-17 12:14:57,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:14:57,761 INFO L225 Difference]: With dead ends: 51 [2020-07-17 12:14:57,761 INFO L226 Difference]: Without dead ends: 37 [2020-07-17 12:14:57,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:14:57,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-17 12:14:57,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2020-07-17 12:14:57,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-17 12:14:57,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-07-17 12:14:57,783 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 22 [2020-07-17 12:14:57,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:14:57,784 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-07-17 12:14:57,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:14:57,784 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-07-17 12:14:57,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-17 12:14:57,788 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:14:57,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:14:58,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-17 12:14:58,003 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:14:58,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:14:58,004 INFO L82 PathProgramCache]: Analyzing trace with hash -69884793, now seen corresponding path program 1 times [2020-07-17 12:14:58,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:14:58,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606657486] [2020-07-17 12:14:58,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:14:58,036 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-17 12:14:58,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [601389230] [2020-07-17 12:14:58,037 INFO L94 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 [2020-07-17 12:14:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 12:14:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 12:14:58,156 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 12:14:58,156 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 12:14:58,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:14:58,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 12:14:58 BoogieIcfgContainer [2020-07-17 12:14:58,416 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 12:14:58,420 INFO L168 Benchmark]: Toolchain (without parser) took 2590.58 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 103.6 MB in the beginning and 97.5 MB in the end (delta: 6.1 MB). Peak memory consumption was 63.7 MB. Max. memory is 7.1 GB. [2020-07-17 12:14:58,421 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 12:14:58,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 524.92 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 103.2 MB in the beginning and 182.6 MB in the end (delta: -79.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-07-17 12:14:58,424 INFO L168 Benchmark]: Boogie Preprocessor took 83.23 ms. Allocated memory is still 203.4 MB. Free memory was 182.6 MB in the beginning and 180.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-07-17 12:14:58,425 INFO L168 Benchmark]: RCFGBuilder took 405.63 ms. Allocated memory is still 203.4 MB. Free memory was 180.3 MB in the beginning and 163.5 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-07-17 12:14:58,425 INFO L168 Benchmark]: TraceAbstraction took 1568.65 ms. Allocated memory is still 203.4 MB. Free memory was 162.8 MB in the beginning and 97.5 MB in the end (delta: 65.3 MB). Peak memory consumption was 65.3 MB. Max. memory is 7.1 GB. [2020-07-17 12:14:58,431 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 524.92 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 103.2 MB in the beginning and 182.6 MB in the end (delta: -79.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.23 ms. Allocated memory is still 203.4 MB. Free memory was 182.6 MB in the beginning and 180.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 405.63 ms. Allocated memory is still 203.4 MB. Free memory was 180.3 MB in the beginning and 163.5 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1568.65 ms. Allocated memory is still 203.4 MB. Free memory was 162.8 MB in the beginning and 97.5 MB in the end (delta: 65.3 MB). Peak memory consumption was 65.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=7, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}] [L30] COND TRUE i