/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/eqn3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 12:14:34,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 12:14:34,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 12:14:34,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 12:14:34,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 12:14:34,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 12:14:34,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 12:14:34,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 12:14:34,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 12:14:34,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 12:14:34,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 12:14:34,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 12:14:34,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 12:14:34,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 12:14:34,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 12:14:34,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 12:14:34,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 12:14:34,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 12:14:34,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 12:14:34,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 12:14:34,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 12:14:34,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 12:14:34,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 12:14:34,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 12:14:34,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 12:14:34,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 12:14:34,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 12:14:34,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 12:14:34,690 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 12:14:34,707 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 12:14:34,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 12:14:34,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 12:14:34,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 12:14:34,709 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 12:14:34,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 12:14:34,709 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 12:14:34,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 12:14:34,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 12:14:34,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 12:14:34,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 12:14:34,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 12:14:34,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 12:14:34,710 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 12:14:34,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 12:14:34,711 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 12:14:34,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 12:14:34,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 12:14:34,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 12:14:34,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 12:14:34,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 12:14:34,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:14:34,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 12:14:34,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 12:14:34,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 12:14:34,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 12:14:34,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 12:14:34,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 12:14:34,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 12:14:34,713 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 12:14:35,009 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 12:14:35,023 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 12:14:35,026 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 12:14:35,028 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 12:14:35,028 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 12:14:35,029 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn3f.c [2020-07-17 12:14:35,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9dacaea/3e8a0f77311c46a88149bb3df6e5850e/FLAG6572f0c78 [2020-07-17 12:14:35,548 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 12:14:35,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/eqn3f.c [2020-07-17 12:14:35,560 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9dacaea/3e8a0f77311c46a88149bb3df6e5850e/FLAG6572f0c78 [2020-07-17 12:14:35,986 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9dacaea/3e8a0f77311c46a88149bb3df6e5850e [2020-07-17 12:14:35,997 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 12:14:36,000 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 12:14:36,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 12:14:36,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 12:14:36,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 12:14:36,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:14:35" (1/1) ... [2020-07-17 12:14:36,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@565cb1f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:36, skipping insertion in model container [2020-07-17 12:14:36,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:14:35" (1/1) ... [2020-07-17 12:14:36,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 12:14:36,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 12:14:36,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:14:36,272 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 12:14:36,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:14:36,315 INFO L208 MainTranslator]: Completed translation [2020-07-17 12:14:36,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:36 WrapperNode [2020-07-17 12:14:36,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 12:14:36,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 12:14:36,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 12:14:36,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 12:14:36,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:36" (1/1) ... [2020-07-17 12:14:36,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:36" (1/1) ... [2020-07-17 12:14:36,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:36" (1/1) ... [2020-07-17 12:14:36,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:36" (1/1) ... [2020-07-17 12:14:36,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:36" (1/1) ... [2020-07-17 12:14:36,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:36" (1/1) ... [2020-07-17 12:14:36,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:36" (1/1) ... [2020-07-17 12:14:36,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 12:14:36,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 12:14:36,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 12:14:36,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 12:14:36,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:36" (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 12:14:36,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 12:14:36,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 12:14:36,536 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 12:14:36,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 12:14:36,536 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 12:14:36,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 12:14:36,537 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 12:14:36,537 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 12:14:36,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 12:14:36,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 12:14:36,537 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 12:14:36,538 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 12:14:36,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 12:14:36,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 12:14:36,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 12:14:36,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 12:14:36,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 12:14:36,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 12:14:36,831 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 12:14:36,831 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-17 12:14:36,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:14:36 BoogieIcfgContainer [2020-07-17 12:14:36,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 12:14:36,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 12:14:36,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 12:14:36,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 12:14:36,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 12:14:35" (1/3) ... [2020-07-17 12:14:36,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a385117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:14:36, skipping insertion in model container [2020-07-17 12:14:36,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:36" (2/3) ... [2020-07-17 12:14:36,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a385117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:14:36, skipping insertion in model container [2020-07-17 12:14:36,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:14:36" (3/3) ... [2020-07-17 12:14:36,849 INFO L109 eAbstractionObserver]: Analyzing ICFG eqn3f.c [2020-07-17 12:14:36,863 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 12:14:36,876 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 12:14:36,897 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 12:14:36,929 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 12:14:36,929 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 12:14:36,929 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 12:14:36,930 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 12:14:36,930 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 12:14:36,931 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 12:14:36,931 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 12:14:36,931 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 12:14:36,958 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-07-17 12:14:36,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-17 12:14:36,967 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:14:36,968 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 12:14:36,968 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:14:36,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:14:36,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-07-17 12:14:36,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:14:36,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531162861] [2020-07-17 12:14:36,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:14:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:14:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:14:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:14:37,253 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 12:14:37,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531162861] [2020-07-17 12:14:37,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:14:37,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 12:14:37,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588177589] [2020-07-17 12:14:37,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 12:14:37,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:14:37,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 12:14:37,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 12:14:37,282 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-07-17 12:14:37,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:14:37,404 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-07-17 12:14:37,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 12:14:37,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-17 12:14:37,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:14:37,417 INFO L225 Difference]: With dead ends: 58 [2020-07-17 12:14:37,417 INFO L226 Difference]: Without dead ends: 29 [2020-07-17 12:14:37,421 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 12:14:37,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-17 12:14:37,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-17 12:14:37,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-17 12:14:37,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-07-17 12:14:37,469 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-07-17 12:14:37,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:14:37,470 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-07-17 12:14:37,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 12:14:37,470 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-07-17 12:14:37,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-17 12:14:37,471 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:14:37,471 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 12:14:37,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 12:14:37,472 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:14:37,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:14:37,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-07-17 12:14:37,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:14:37,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97418736] [2020-07-17 12:14:37,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:14:37,500 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-17 12:14:37,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1791993088] [2020-07-17 12:14:37,501 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 12:14:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 12:14:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 12:14:37,625 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 12:14:37,625 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 12:14:37,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-17 12:14:37,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 12:14:37 BoogieIcfgContainer [2020-07-17 12:14:37,884 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 12:14:37,887 INFO L168 Benchmark]: Toolchain (without parser) took 1887.35 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 101.5 MB in the beginning and 118.2 MB in the end (delta: -16.6 MB). Peak memory consumption was 40.5 MB. Max. memory is 7.1 GB. [2020-07-17 12:14:37,888 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 144.2 MB. Free memory is still 120.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 12:14:37,889 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.23 ms. Allocated memory is still 144.2 MB. Free memory was 101.1 MB in the beginning and 90.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-17 12:14:37,890 INFO L168 Benchmark]: Boogie Preprocessor took 152.63 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 90.9 MB in the beginning and 178.3 MB in the end (delta: -87.4 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-17 12:14:37,891 INFO L168 Benchmark]: RCFGBuilder took 371.08 ms. Allocated memory is still 201.3 MB. Free memory was 178.3 MB in the beginning and 161.9 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2020-07-17 12:14:37,891 INFO L168 Benchmark]: TraceAbstraction took 1041.91 ms. Allocated memory is still 201.3 MB. Free memory was 160.9 MB in the beginning and 118.2 MB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. [2020-07-17 12:14:37,896 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 144.2 MB. Free memory is still 120.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 314.23 ms. Allocated memory is still 144.2 MB. Free memory was 101.1 MB in the beginning and 90.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 152.63 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 90.9 MB in the beginning and 178.3 MB in the end (delta: -87.4 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 371.08 ms. Allocated memory is still 201.3 MB. Free memory was 178.3 MB in the beginning and 161.9 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1041.91 ms. Allocated memory is still 201.3 MB. Free memory was 160.9 MB in the beginning and 118.2 MB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 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] a[0] = 6 [L30] b[0] = 10 [L32] i=1 VAL [\old(N)=0, a={-1:0}, b={-2:0}, i=1, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={-2:0}, N=1] [L32] COND FALSE !(i