/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/eqn2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:56:19,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:56:19,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:56:19,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:56:19,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:56:19,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:56:19,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:56:19,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:56:19,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:56:19,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:56:19,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:56:19,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:56:19,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:56:19,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:56:19,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:56:19,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:56:19,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:56:19,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:56:19,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:56:19,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:56:19,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:56:19,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:56:19,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:56:19,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:56:19,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:56:19,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:56:19,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:56:19,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:56:19,531 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 16:56:19,582 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:56:19,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:56:19,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:56:19,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:56:19,585 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:56:19,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:56:19,585 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:56:19,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:56:19,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:56:19,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:56:19,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:56:19,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:56:19,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:56:19,587 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:56:19,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:56:19,587 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:56:19,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:56:19,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:56:19,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:56:19,589 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:56:19,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:56:19,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:56:19,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:56:19,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:56:19,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:56:19,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:56:19,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:56:19,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:56:19,591 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:56:19,591 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:56:19,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:56:19,935 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:56:19,940 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:56:19,941 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:56:19,943 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:56:19,944 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn2f.c [2020-08-22 16:56:20,010 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec5d1c2d2/a6d3a394f3dd44b09d91255a15aefa45/FLAG564a18749 [2020-08-22 16:56:20,460 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:56:20,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/eqn2f.c [2020-08-22 16:56:20,467 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec5d1c2d2/a6d3a394f3dd44b09d91255a15aefa45/FLAG564a18749 [2020-08-22 16:56:20,861 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec5d1c2d2/a6d3a394f3dd44b09d91255a15aefa45 [2020-08-22 16:56:20,870 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:56:20,872 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:56:20,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:20,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:56:20,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:56:20,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:20" (1/1) ... [2020-08-22 16:56:20,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c359f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:20, skipping insertion in model container [2020-08-22 16:56:20,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:20" (1/1) ... [2020-08-22 16:56:20,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:56:20,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:56:21,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:21,096 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:56:21,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:21,132 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:56:21,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:21 WrapperNode [2020-08-22 16:56:21,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:21,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:56:21,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:56:21,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:56:21,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:21" (1/1) ... [2020-08-22 16:56:21,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:21" (1/1) ... [2020-08-22 16:56:21,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:21" (1/1) ... [2020-08-22 16:56:21,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:21" (1/1) ... [2020-08-22 16:56:21,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:21" (1/1) ... [2020-08-22 16:56:21,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:21" (1/1) ... [2020-08-22 16:56:21,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:21" (1/1) ... [2020-08-22 16:56:21,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:56:21,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:56:21,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:56:21,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:56:21,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:56:21,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:56:21,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:56:21,325 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 16:56:21,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:56:21,326 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:56:21,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:56:21,326 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:56:21,326 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 16:56:21,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:56:21,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:56:21,326 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 16:56:21,327 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:56:21,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 16:56:21,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:56:21,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:56:21,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:56:21,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:56:21,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:56:21,588 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:56:21,589 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-22 16:56:21,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:21 BoogieIcfgContainer [2020-08-22 16:56:21,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:56:21,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:56:21,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:56:21,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:56:21,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:56:20" (1/3) ... [2020-08-22 16:56:21,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb0161d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:21, skipping insertion in model container [2020-08-22 16:56:21,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:21" (2/3) ... [2020-08-22 16:56:21,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb0161d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:21, skipping insertion in model container [2020-08-22 16:56:21,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:21" (3/3) ... [2020-08-22 16:56:21,603 INFO L109 eAbstractionObserver]: Analyzing ICFG eqn2f.c [2020-08-22 16:56:21,618 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:56:21,627 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:56:21,647 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:56:21,677 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:56:21,678 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:56:21,678 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:56:21,678 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:56:21,678 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:56:21,678 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:56:21,678 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:56:21,679 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:56:21,710 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-08-22 16:56:21,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 16:56:21,717 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:21,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:56:21,719 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:21,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:21,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-08-22 16:56:21,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:21,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002555208] [2020-08-22 16:56:21,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:21,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:21,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:56:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:21,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:56:21,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002555208] [2020-08-22 16:56:21,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:21,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 16:56:21,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288541023] [2020-08-22 16:56:21,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 16:56:21,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:21,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 16:56:21,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:56:21,983 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-08-22 16:56:22,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:22,091 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-08-22 16:56:22,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:56:22,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-22 16:56:22,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:22,103 INFO L225 Difference]: With dead ends: 58 [2020-08-22 16:56:22,104 INFO L226 Difference]: Without dead ends: 29 [2020-08-22 16:56:22,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:56:22,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-22 16:56:22,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-08-22 16:56:22,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-22 16:56:22,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-08-22 16:56:22,152 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-08-22 16:56:22,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:22,152 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-08-22 16:56:22,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 16:56:22,153 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-08-22 16:56:22,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 16:56:22,154 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:22,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:56:22,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:56:22,155 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:22,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:22,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-08-22 16:56:22,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:22,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060021712] [2020-08-22 16:56:22,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:22,185 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:56:22,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [713791253] [2020-08-22 16:56:22,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:56:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:22,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2020-08-22 16:56:22,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:56:22,357 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:56:22,358 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 39 [2020-08-22 16:56:22,359 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:56:22,389 INFO L625 ElimStorePlain]: treesize reduction 16, result has 59.0 percent of original size [2020-08-22 16:56:22,398 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:56:22,399 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:7 [2020-08-22 16:56:22,442 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:56:22,443 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2020-08-22 16:56:22,444 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-08-22 16:56:22,457 INFO L625 ElimStorePlain]: treesize reduction 9, result has 43.8 percent of original size [2020-08-22 16:56:22,458 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:56:22,458 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:7 [2020-08-22 16:56:22,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:56:22,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060021712] [2020-08-22 16:56:22,505 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-08-22 16:56:22,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713791253] [2020-08-22 16:56:22,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:22,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 16:56:22,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839334804] [2020-08-22 16:56:22,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 16:56:22,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:22,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 16:56:22,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-22 16:56:22,510 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 7 states. [2020-08-22 16:56:22,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:22,644 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2020-08-22 16:56:22,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 16:56:22,645 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-08-22 16:56:22,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:22,648 INFO L225 Difference]: With dead ends: 47 [2020-08-22 16:56:22,648 INFO L226 Difference]: Without dead ends: 45 [2020-08-22 16:56:22,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-22 16:56:22,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-08-22 16:56:22,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2020-08-22 16:56:22,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-22 16:56:22,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-08-22 16:56:22,663 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 22 [2020-08-22 16:56:22,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:22,664 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-08-22 16:56:22,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 16:56:22,664 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-08-22 16:56:22,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 16:56:22,665 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:22,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:56:22,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-08-22 16:56:22,882 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:22,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:22,884 INFO L82 PathProgramCache]: Analyzing trace with hash -2104565367, now seen corresponding path program 1 times [2020-08-22 16:56:22,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:22,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033552517] [2020-08-22 16:56:22,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:22,906 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:56:22,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [624587028] [2020-08-22 16:56:22,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:56:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:22,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2020-08-22 16:56:22,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:56:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:56:22,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033552517] [2020-08-22 16:56:22,988 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-08-22 16:56:22,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624587028] [2020-08-22 16:56:22,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:22,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:56:22,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222570207] [2020-08-22 16:56:22,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:56:22,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:22,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:56:22,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:56:22,990 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 5 states. [2020-08-22 16:56:23,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:23,090 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2020-08-22 16:56:23,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:56:23,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-08-22 16:56:23,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:23,094 INFO L225 Difference]: With dead ends: 71 [2020-08-22 16:56:23,094 INFO L226 Difference]: Without dead ends: 58 [2020-08-22 16:56:23,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 16:56:23,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-22 16:56:23,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 39. [2020-08-22 16:56:23,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-22 16:56:23,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-08-22 16:56:23,105 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 24 [2020-08-22 16:56:23,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:23,105 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-08-22 16:56:23,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:56:23,106 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-08-22 16:56:23,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 16:56:23,107 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:23,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:56:23,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:56:23,322 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:23,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:23,323 INFO L82 PathProgramCache]: Analyzing trace with hash -2011180599, now seen corresponding path program 1 times [2020-08-22 16:56:23,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:23,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345285176] [2020-08-22 16:56:23,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:23,367 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:56:23,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2000236347] [2020-08-22 16:56:23,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:56:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:23,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2020-08-22 16:56:23,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:56:23,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:56:23,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345285176] [2020-08-22 16:56:23,445 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-08-22 16:56:23,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000236347] [2020-08-22 16:56:23,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 16:56:23,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-22 16:56:23,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544059422] [2020-08-22 16:56:23,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:56:23,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:23,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:56:23,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:56:23,448 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 5 states. [2020-08-22 16:56:23,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:23,538 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2020-08-22 16:56:23,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 16:56:23,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-08-22 16:56:23,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:23,541 INFO L225 Difference]: With dead ends: 66 [2020-08-22 16:56:23,541 INFO L226 Difference]: Without dead ends: 55 [2020-08-22 16:56:23,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 16:56:23,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-22 16:56:23,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 40. [2020-08-22 16:56:23,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-22 16:56:23,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2020-08-22 16:56:23,550 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 24 [2020-08-22 16:56:23,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:23,551 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2020-08-22 16:56:23,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:56:23,551 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-08-22 16:56:23,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 16:56:23,552 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:23,552 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] [2020-08-22 16:56:23,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:56:23,767 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:23,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:23,767 INFO L82 PathProgramCache]: Analyzing trace with hash -69884793, now seen corresponding path program 1 times [2020-08-22 16:56:23,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:23,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412896333] [2020-08-22 16:56:23,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:23,789 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:56:23,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [533174076] [2020-08-22 16:56:23,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:56:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:23,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 25 conjunts are in the unsatisfiable core [2020-08-22 16:56:23,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:56:23,865 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-08-22 16:56:23,867 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:56:23,879 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:56:23,885 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-08-22 16:56:23,885 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-08-22 16:56:23,896 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:56:23,897 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:56:23,897 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:45, output treesize:28 [2020-08-22 16:56:23,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:56:23,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:56:23,941 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:56:23,941 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 59 [2020-08-22 16:56:23,943 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:56:23,982 INFO L625 ElimStorePlain]: treesize reduction 22, result has 69.4 percent of original size [2020-08-22 16:56:23,984 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-08-22 16:56:23,985 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:54, output treesize:50 [2020-08-22 16:56:24,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:56:24,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:56:24,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:56:24,116 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:56:24,117 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 73 [2020-08-22 16:56:24,120 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:56:24,179 INFO L625 ElimStorePlain]: treesize reduction 30, result has 69.7 percent of original size [2020-08-22 16:56:24,190 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-08-22 16:56:24,190 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:73, output treesize:69 [2020-08-22 16:56:24,438 INFO L173 IndexEqualityManager]: detected equality via solver [2020-08-22 16:56:24,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:56:24,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:56:24,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:56:24,457 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:56:24,458 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 33 [2020-08-22 16:56:24,460 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:56:24,474 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:56:24,479 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:56:24,479 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:81, output treesize:7 [2020-08-22 16:56:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:56:24,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412896333] [2020-08-22 16:56:24,555 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-08-22 16:56:24,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533174076] [2020-08-22 16:56:24,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 16:56:24,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 16:56:24,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48499937] [2020-08-22 16:56:24,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 16:56:24,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:24,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 16:56:24,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 16:56:24,557 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 10 states. [2020-08-22 16:56:26,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:26,179 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-08-22 16:56:26,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 16:56:26,179 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-08-22 16:56:26,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:26,181 INFO L225 Difference]: With dead ends: 59 [2020-08-22 16:56:26,181 INFO L226 Difference]: Without dead ends: 57 [2020-08-22 16:56:26,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-08-22 16:56:26,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-22 16:56:26,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2020-08-22 16:56:26,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-22 16:56:26,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-08-22 16:56:26,190 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 26 [2020-08-22 16:56:26,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:26,191 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-08-22 16:56:26,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 16:56:26,191 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-08-22 16:56:26,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 16:56:26,192 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:26,192 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:56:26,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:56:26,407 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:26,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:26,408 INFO L82 PathProgramCache]: Analyzing trace with hash 913238305, now seen corresponding path program 1 times [2020-08-22 16:56:26,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:26,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145184970] [2020-08-22 16:56:26,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:26,425 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:56:26,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1728939341] [2020-08-22 16:56:26,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:56:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:26,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2020-08-22 16:56:26,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:56:26,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:56:26,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145184970] [2020-08-22 16:56:26,519 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-08-22 16:56:26,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728939341] [2020-08-22 16:56:26,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:26,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:56:26,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205485569] [2020-08-22 16:56:26,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:56:26,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:26,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:56:26,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:56:26,522 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 6 states. [2020-08-22 16:56:26,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:26,609 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2020-08-22 16:56:26,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 16:56:26,609 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-08-22 16:56:26,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:26,611 INFO L225 Difference]: With dead ends: 63 [2020-08-22 16:56:26,611 INFO L226 Difference]: Without dead ends: 41 [2020-08-22 16:56:26,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-08-22 16:56:26,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-08-22 16:56:26,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2020-08-22 16:56:26,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-22 16:56:26,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-08-22 16:56:26,618 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 30 [2020-08-22 16:56:26,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:26,619 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-08-22 16:56:26,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:56:26,619 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-08-22 16:56:26,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 16:56:26,620 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:26,620 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:56:26,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-08-22 16:56:26,821 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:26,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:26,822 INFO L82 PathProgramCache]: Analyzing trace with hash 890841693, now seen corresponding path program 1 times [2020-08-22 16:56:26,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:26,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414283577] [2020-08-22 16:56:26,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:26,838 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:56:26,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1879437834] [2020-08-22 16:56:26,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:56:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:26,886 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:26,904 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:26,929 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:56:26,929 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:56:27,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:56:27,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:56:27 BoogieIcfgContainer [2020-08-22 16:56:27,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:56:27,202 INFO L168 Benchmark]: Toolchain (without parser) took 6330.39 ms. Allocated memory was 147.3 MB in the beginning and 243.8 MB in the end (delta: 96.5 MB). Free memory was 103.2 MB in the beginning and 200.2 MB in the end (delta: -97.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 16:56:27,202 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 16:56:27,203 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.29 ms. Allocated memory is still 147.3 MB. Free memory was 103.0 MB in the beginning and 92.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:27,204 INFO L168 Benchmark]: Boogie Preprocessor took 126.11 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 92.5 MB in the beginning and 180.7 MB in the end (delta: -88.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:27,205 INFO L168 Benchmark]: RCFGBuilder took 334.59 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 163.8 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:27,206 INFO L168 Benchmark]: TraceAbstraction took 5603.82 ms. Allocated memory was 203.4 MB in the beginning and 243.8 MB in the end (delta: 40.4 MB). Free memory was 163.2 MB in the beginning and 200.2 MB in the end (delta: -37.0 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:27,210 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 260.29 ms. Allocated memory is still 147.3 MB. Free memory was 103.0 MB in the beginning and 92.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.11 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 92.5 MB in the beginning and 180.7 MB in the end (delta: -88.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 334.59 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 163.8 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5603.82 ms. Allocated memory was 203.4 MB in the beginning and 243.8 MB in the end (delta: 40.4 MB). Free memory was 163.2 MB in the beginning and 200.2 MB in the end (delta: -37.0 MB). Peak memory consumption was 3.3 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)=6, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=2] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=2] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=2] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=2] [L25] int i; [L26] long long *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L29] a[0] = 8 [L30] b[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=2] [L32] COND TRUE i