/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/nsqmf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:32:11,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:32:11,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:32:11,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:32:11,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:32:11,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:32:11,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:32:11,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:32:11,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:32:11,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:32:11,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:32:11,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:32:11,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:32:11,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:32:11,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:32:11,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:32:11,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:32:11,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:32:11,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:32:11,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:32:11,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:32:11,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:32:11,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:32:11,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:32:11,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:32:11,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:32:11,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:32:11,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:32:11,268 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 [2020-07-07 11:32:11,281 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:32:11,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:32:11,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:32:11,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:32:11,284 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:32:11,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:32:11,284 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:32:11,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:32:11,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:32:11,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:32:11,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:32:11,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:32:11,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:32:11,286 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:32:11,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:32:11,286 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:32:11,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:32:11,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:32:11,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:32:11,287 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:32:11,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:32:11,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:32:11,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:32:11,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:32:11,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:32:11,288 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:32:11,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:32:11,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:32:11,289 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:32:11,289 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:32:11,661 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:32:11,673 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:32:11,677 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:32:11,679 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:32:11,679 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:32:11,680 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/nsqmf.c [2020-07-07 11:32:11,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bee03b0da/089c403f55f54c51831f32cf9899b7a4/FLAG2b279b669 [2020-07-07 11:32:12,219 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:32:12,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/nsqmf.c [2020-07-07 11:32:12,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bee03b0da/089c403f55f54c51831f32cf9899b7a4/FLAG2b279b669 [2020-07-07 11:32:12,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bee03b0da/089c403f55f54c51831f32cf9899b7a4 [2020-07-07 11:32:12,598 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:32:12,599 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:32:12,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:32:12,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:32:12,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:32:12,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:32:12" (1/1) ... [2020-07-07 11:32:12,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ea73cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:12, skipping insertion in model container [2020-07-07 11:32:12,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:32:12" (1/1) ... [2020-07-07 11:32:12,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:32:12,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:32:12,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:32:12,832 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:32:12,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:32:12,870 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:32:12,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:12 WrapperNode [2020-07-07 11:32:12,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:32:12,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:32:12,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:32:12,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:32:12,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:12" (1/1) ... [2020-07-07 11:32:12,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:12" (1/1) ... [2020-07-07 11:32:12,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:12" (1/1) ... [2020-07-07 11:32:12,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:12" (1/1) ... [2020-07-07 11:32:12,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:12" (1/1) ... [2020-07-07 11:32:12,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:12" (1/1) ... [2020-07-07 11:32:12,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:12" (1/1) ... [2020-07-07 11:32:12,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:32:12,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:32:12,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:32:12,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:32:12,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:12" (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 [2020-07-07 11:32:13,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:32:13,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:32:13,065 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 11:32:13,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 11:32:13,066 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:32:13,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:32:13,066 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 11:32:13,066 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 11:32:13,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 11:32:13,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:32:13,067 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 11:32:13,070 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:32:13,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 11:32:13,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 11:32:13,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 11:32:13,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:32:13,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:32:13,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 11:32:13,364 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:32:13,364 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-07 11:32:13,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:32:13 BoogieIcfgContainer [2020-07-07 11:32:13,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:32:13,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:32:13,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:32:13,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:32:13,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:32:12" (1/3) ... [2020-07-07 11:32:13,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d2b600b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:32:13, skipping insertion in model container [2020-07-07 11:32:13,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:12" (2/3) ... [2020-07-07 11:32:13,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d2b600b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:32:13, skipping insertion in model container [2020-07-07 11:32:13,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:32:13" (3/3) ... [2020-07-07 11:32:13,376 INFO L109 eAbstractionObserver]: Analyzing ICFG nsqmf.c [2020-07-07 11:32:13,383 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:32:13,389 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:32:13,400 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:32:13,421 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:32:13,421 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:32:13,422 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:32:13,422 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:32:13,422 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:32:13,422 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:32:13,422 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:32:13,422 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:32:13,440 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-07-07 11:32:13,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-07 11:32:13,445 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:13,445 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] [2020-07-07 11:32:13,446 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:13,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:13,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-07-07 11:32:13,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:13,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764473008] [2020-07-07 11:32:13,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:13,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:13,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764473008] [2020-07-07 11:32:13,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:32:13,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:32:13,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249721066] [2020-07-07 11:32:13,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:32:13,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:32:13,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:32:13,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:32:13,673 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-07-07 11:32:13,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:32:13,793 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-07-07 11:32:13,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:32:13,795 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-07 11:32:13,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:32:13,804 INFO L225 Difference]: With dead ends: 58 [2020-07-07 11:32:13,804 INFO L226 Difference]: Without dead ends: 29 [2020-07-07 11:32:13,809 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 [2020-07-07 11:32:13,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-07 11:32:13,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-07 11:32:13,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-07 11:32:13,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-07-07 11:32:13,846 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-07-07 11:32:13,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:32:13,847 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-07-07 11:32:13,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:32:13,848 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-07-07 11:32:13,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-07 11:32:13,849 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:13,849 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] [2020-07-07 11:32:13,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:32:13,850 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:13,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:13,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-07-07 11:32:13,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:13,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116974538] [2020-07-07 11:32:13,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:13,879 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:32:13,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1237335045] [2020-07-07 11:32:13,880 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 [2020-07-07 11:32:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:32:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:32:13,991 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-07 11:32:13,991 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 11:32:14,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-07 11:32:14,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:32:14 BoogieIcfgContainer [2020-07-07 11:32:14,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:32:14,251 INFO L168 Benchmark]: Toolchain (without parser) took 1650.85 ms. Allocated memory was 144.2 MB in the beginning and 200.3 MB in the end (delta: 56.1 MB). Free memory was 104.5 MB in the beginning and 118.4 MB in the end (delta: -14.0 MB). Peak memory consumption was 42.1 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:14,252 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 144.2 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 11:32:14,253 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.22 ms. Allocated memory is still 144.2 MB. Free memory was 104.2 MB in the beginning and 93.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:14,256 INFO L168 Benchmark]: Boogie Preprocessor took 122.87 ms. Allocated memory was 144.2 MB in the beginning and 200.3 MB in the end (delta: 56.1 MB). Free memory was 93.4 MB in the beginning and 178.4 MB in the end (delta: -85.1 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:14,257 INFO L168 Benchmark]: RCFGBuilder took 374.33 ms. Allocated memory is still 200.3 MB. Free memory was 178.4 MB in the beginning and 161.5 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:14,258 INFO L168 Benchmark]: TraceAbstraction took 878.85 ms. Allocated memory is still 200.3 MB. Free memory was 160.8 MB in the beginning and 118.4 MB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:14,264 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 144.2 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 270.22 ms. Allocated memory is still 144.2 MB. Free memory was 104.2 MB in the beginning and 93.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.87 ms. Allocated memory was 144.2 MB in the beginning and 200.3 MB in the end (delta: 56.1 MB). Free memory was 93.4 MB in the beginning and 178.4 MB in the end (delta: -85.1 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 374.33 ms. Allocated memory is still 200.3 MB. Free memory was 178.4 MB in the beginning and 161.5 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 878.85 ms. Allocated memory is still 200.3 MB. Free memory was 160.8 MB in the beginning and 118.4 MB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=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); [L27] long long *b = malloc(sizeof(long long)*N); [L29] b[0] = 1 [L30] a[0] = 1 [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