java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --traceabstraction.dump.automata.to.the.following.directory dump --rcfgbuilder.size.of.a.code.block SingleStatement --cacsl2boogietranslator.bitprecise.bitfields false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/sanfoundry_24_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c5b1954-m [2018-10-10 14:43:01,967 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 14:43:01,969 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 14:43:01,981 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 14:43:01,981 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 14:43:01,982 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 14:43:01,984 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 14:43:01,986 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 14:43:01,987 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 14:43:01,988 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 14:43:01,989 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 14:43:01,989 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 14:43:01,990 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 14:43:01,991 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 14:43:01,993 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 14:43:01,993 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 14:43:01,994 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 14:43:01,996 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 14:43:01,998 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 14:43:02,000 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 14:43:02,001 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 14:43:02,002 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 14:43:02,005 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-10 14:43:02,023 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-10-10 14:43:02,053 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 14:43:02,053 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 14:43:02,054 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-10 14:43:02,055 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-10 14:43:02,055 INFO L133 SettingsManager]: * Use SBE=true [2018-10-10 14:43:02,055 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-10 14:43:02,055 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-10 14:43:02,056 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-10 14:43:02,056 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-10 14:43:02,056 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-10 14:43:02,056 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-10 14:43:02,056 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-10 14:43:02,056 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-10 14:43:02,057 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-10 14:43:02,057 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-10 14:43:02,057 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-10 14:43:02,057 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 14:43:02,057 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-10 14:43:02,058 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-10 14:43:02,058 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-10 14:43:02,058 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-10 14:43:02,058 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 14:43:02,058 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-10 14:43:02,059 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-10 14:43:02,059 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-10 14:43:02,059 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Dump automata to the following directory -> dump Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Bitprecise bitfields -> false [2018-10-10 14:43:02,104 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 14:43:02,121 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 14:43:02,124 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 14:43:02,126 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-10 14:43:02,126 INFO L276 PluginConnector]: CDTParser initialized [2018-10-10 14:43:02,127 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sanfoundry_24_false-valid-deref.i [2018-10-10 14:43:02,430 INFO L217 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8d7d1943/82fbb812049d4c2b8eafe5ed3fca3b77/FLAG47a5ce0d1 [2018-10-10 14:43:02,666 INFO L289 CDTParser]: Found 1 translation units. [2018-10-10 14:43:02,667 INFO L157 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sanfoundry_24_false-valid-deref.i [2018-10-10 14:43:02,674 INFO L337 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8d7d1943/82fbb812049d4c2b8eafe5ed3fca3b77/FLAG47a5ce0d1 [2018-10-10 14:43:02,689 INFO L345 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8d7d1943/82fbb812049d4c2b8eafe5ed3fca3b77 [2018-10-10 14:43:02,699 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 14:43:02,700 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-10 14:43:02,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-10 14:43:02,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-10 14:43:02,705 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-10 14:43:02,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 02:43:02" (1/1) ... [2018-10-10 14:43:02,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1be946c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:43:02, skipping insertion in model container [2018-10-10 14:43:02,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 02:43:02" (1/1) ... [2018-10-10 14:43:02,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-10 14:43:02,749 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-10 14:43:02,949 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 14:43:02,955 INFO L189 MainTranslator]: Completed pre-run [2018-10-10 14:43:02,987 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 14:43:03,016 INFO L193 MainTranslator]: Completed translation [2018-10-10 14:43:03,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:43:03 WrapperNode [2018-10-10 14:43:03,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-10 14:43:03,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-10 14:43:03,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-10 14:43:03,018 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-10 14:43:03,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:43:03" (1/1) ... [2018-10-10 14:43:03,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:43:03" (1/1) ... [2018-10-10 14:43:03,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-10 14:43:03,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 14:43:03,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 14:43:03,093 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 14:43:03,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:43:03" (1/1) ... [2018-10-10 14:43:03,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:43:03" (1/1) ... [2018-10-10 14:43:03,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:43:03" (1/1) ... [2018-10-10 14:43:03,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:43:03" (1/1) ... [2018-10-10 14:43:03,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:43:03" (1/1) ... [2018-10-10 14:43:03,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:43:03" (1/1) ... [2018-10-10 14:43:03,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:43:03" (1/1) ... [2018-10-10 14:43:03,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 14:43:03,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 14:43:03,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 14:43:03,151 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 14:43:03,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:43:03" (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 [2018-10-10 14:43:03,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 14:43:03,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 14:43:04,178 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 14:43:04,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 02:43:04 BoogieIcfgContainer [2018-10-10 14:43:04,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 14:43:04,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 14:43:04,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 14:43:04,184 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 14:43:04,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 02:43:02" (1/3) ... [2018-10-10 14:43:04,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3b26fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 02:43:04, skipping insertion in model container [2018-10-10 14:43:04,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:43:03" (2/3) ... [2018-10-10 14:43:04,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3b26fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 02:43:04, skipping insertion in model container [2018-10-10 14:43:04,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 02:43:04" (3/3) ... [2018-10-10 14:43:04,188 INFO L112 eAbstractionObserver]: Analyzing ICFG sanfoundry_24_false-valid-deref.i [2018-10-10 14:43:04,198 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-10 14:43:04,207 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-10-10 14:43:04,225 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2018-10-10 14:43:04,253 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 14:43:04,253 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 14:43:04,254 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 14:43:04,254 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-10 14:43:04,254 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 14:43:04,255 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 14:43:04,255 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 14:43:04,255 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 14:43:04,255 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 14:43:04,277 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2018-10-10 14:43:04,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-10 14:43:04,286 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:43:04,288 INFO L375 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, 1, 1, 1, 1] [2018-10-10 14:43:04,290 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:43:04,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:43:04,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1615683852, now seen corresponding path program 1 times [2018-10-10 14:43:04,299 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:43:04,299 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:43:04,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:43:04,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:43:04,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:43:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:43:04,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:43:04,541 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:43:04,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-10 14:43:04,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-10 14:43:04,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-10 14:43:04,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-10 14:43:04,563 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 5 states. [2018-10-10 14:43:05,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:43:05,039 INFO L93 Difference]: Finished difference Result 141 states and 146 transitions. [2018-10-10 14:43:05,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-10 14:43:05,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-10-10 14:43:05,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:43:05,055 INFO L225 Difference]: With dead ends: 141 [2018-10-10 14:43:05,056 INFO L226 Difference]: Without dead ends: 134 [2018-10-10 14:43:05,057 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-10 14:43:05,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-10-10 14:43:05,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 120. [2018-10-10 14:43:05,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-10-10 14:43:05,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 123 transitions. [2018-10-10 14:43:05,099 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 123 transitions. Word has length 30 [2018-10-10 14:43:05,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:43:05,100 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 123 transitions. [2018-10-10 14:43:05,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-10 14:43:05,101 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 123 transitions. [2018-10-10 14:43:05,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-10 14:43:05,102 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:43:05,102 INFO L375 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, 1, 1, 1, 1, 1] [2018-10-10 14:43:05,103 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:43:05,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:43:05,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1453408210, now seen corresponding path program 1 times [2018-10-10 14:43:05,104 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:43:05,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:43:05,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:43:05,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:43:05,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:43:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:43:05,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:43:05,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:43:05,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-10 14:43:05,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-10 14:43:05,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-10 14:43:05,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-10-10 14:43:05,340 INFO L87 Difference]: Start difference. First operand 120 states and 123 transitions. Second operand 8 states. [2018-10-10 14:43:05,741 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-10 14:43:06,437 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-10 14:43:06,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:43:06,574 INFO L93 Difference]: Finished difference Result 240 states and 249 transitions. [2018-10-10 14:43:06,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-10 14:43:06,575 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-10-10 14:43:06,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:43:06,579 INFO L225 Difference]: With dead ends: 240 [2018-10-10 14:43:06,579 INFO L226 Difference]: Without dead ends: 240 [2018-10-10 14:43:06,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2018-10-10 14:43:06,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-10-10 14:43:06,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 156. [2018-10-10 14:43:06,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-10-10 14:43:06,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 163 transitions. [2018-10-10 14:43:06,596 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 163 transitions. Word has length 31 [2018-10-10 14:43:06,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:43:06,597 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 163 transitions. [2018-10-10 14:43:06,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-10 14:43:06,597 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 163 transitions. [2018-10-10 14:43:06,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-10 14:43:06,599 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:43:06,599 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:43:06,600 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:43:06,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:43:06,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1468507476, now seen corresponding path program 1 times [2018-10-10 14:43:06,600 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:43:06,601 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:43:06,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:43:06,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:43:06,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:43:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:43:06,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:43:06,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:43:06,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-10 14:43:06,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 14:43:06,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 14:43:06,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-10-10 14:43:06,875 INFO L87 Difference]: Start difference. First operand 156 states and 163 transitions. Second operand 9 states. [2018-10-10 14:43:07,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:43:07,308 INFO L93 Difference]: Finished difference Result 155 states and 162 transitions. [2018-10-10 14:43:07,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-10 14:43:07,314 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2018-10-10 14:43:07,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:43:07,315 INFO L225 Difference]: With dead ends: 155 [2018-10-10 14:43:07,316 INFO L226 Difference]: Without dead ends: 146 [2018-10-10 14:43:07,316 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2018-10-10 14:43:07,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-10-10 14:43:07,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-10-10 14:43:07,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-10-10 14:43:07,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 152 transitions. [2018-10-10 14:43:07,327 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 152 transitions. Word has length 39 [2018-10-10 14:43:07,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:43:07,328 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 152 transitions. [2018-10-10 14:43:07,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 14:43:07,328 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 152 transitions. [2018-10-10 14:43:07,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-10 14:43:07,330 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:43:07,330 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:43:07,331 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:43:07,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:43:07,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1476355464, now seen corresponding path program 1 times [2018-10-10 14:43:07,331 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:43:07,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:43:07,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:43:07,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:43:07,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:43:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:43:07,584 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:43:07,585 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-10 14:43:07,585 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-10 14:43:07,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:43:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:43:07,647 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 14:43:07,695 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-10 14:43:07,697 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-10 14:43:07,709 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-10 14:43:07,710 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2018-10-10 14:43:07,891 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:43:07,921 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-10 14:43:07,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2018-10-10 14:43:07,956 WARN L240 PathProgramDumper]: Writing path program to file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/dump/sanfoundry_24_false-valid-deref.i_4.bpl [2018-10-10 14:43:07,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-10 14:43:07,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-10 14:43:07,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-10-10 14:43:07,961 INFO L87 Difference]: Start difference. First operand 146 states and 152 transitions. Second operand 12 states. [2018-10-10 14:43:08,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:43:08,767 INFO L93 Difference]: Finished difference Result 240 states and 249 transitions. [2018-10-10 14:43:08,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-10 14:43:08,768 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2018-10-10 14:43:08,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:43:08,770 INFO L225 Difference]: With dead ends: 240 [2018-10-10 14:43:08,771 INFO L226 Difference]: Without dead ends: 240 [2018-10-10 14:43:08,771 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2018-10-10 14:43:08,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-10-10 14:43:08,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 186. [2018-10-10 14:43:08,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-10-10 14:43:08,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 194 transitions. [2018-10-10 14:43:08,783 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 194 transitions. Word has length 48 [2018-10-10 14:43:08,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:43:08,784 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 194 transitions. [2018-10-10 14:43:08,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-10 14:43:08,784 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 194 transitions. [2018-10-10 14:43:08,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-10 14:43:08,788 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:43:08,789 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:43:08,789 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:43:08,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:43:08,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1018393944, now seen corresponding path program 1 times [2018-10-10 14:43:08,792 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:43:08,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:43:08,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:43:08,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:43:08,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:43:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:43:09,043 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:43:09,044 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-10 14:43:09,044 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-10 14:43:09,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:43:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:43:09,074 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 14:43:09,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-10 14:43:09,150 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-10 14:43:09,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2018-10-10 14:43:09,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 14:43:09,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 14:43:09,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-10-10 14:43:09,152 INFO L87 Difference]: Start difference. First operand 186 states and 194 transitions. Second operand 9 states. [2018-10-10 14:43:09,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:43:09,249 INFO L93 Difference]: Finished difference Result 210 states and 217 transitions. [2018-10-10 14:43:09,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-10 14:43:09,252 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2018-10-10 14:43:09,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:43:09,254 INFO L225 Difference]: With dead ends: 210 [2018-10-10 14:43:09,254 INFO L226 Difference]: Without dead ends: 207 [2018-10-10 14:43:09,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-10-10 14:43:09,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-10 14:43:09,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 186. [2018-10-10 14:43:09,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-10-10 14:43:09,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 193 transitions. [2018-10-10 14:43:09,274 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 193 transitions. Word has length 51 [2018-10-10 14:43:09,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:43:09,274 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 193 transitions. [2018-10-10 14:43:09,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 14:43:09,274 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 193 transitions. [2018-10-10 14:43:09,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-10 14:43:09,282 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:43:09,282 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-10 14:43:09,283 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:43:09,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:43:09,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1405526674, now seen corresponding path program 2 times [2018-10-10 14:43:09,283 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:43:09,283 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:43:09,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:43:09,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:43:09,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:43:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:43:09,614 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:43:09,615 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-10 14:43:09,615 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-10 14:43:09,624 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-10 14:43:09,669 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-10 14:43:09,669 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-10 14:43:09,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 14:43:09,680 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-10 14:43:09,681 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-10 14:43:09,698 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-10 14:43:09,698 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2018-10-10 14:43:09,850 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:43:09,871 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-10 14:43:09,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2018-10-10 14:43:09,873 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-10 14:43:09,878 WARN L205 ceAbstractionStarter]: Timeout [2018-10-10 14:43:09,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 02:43:09 BoogieIcfgContainer [2018-10-10 14:43:09,879 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 14:43:09,880 INFO L168 Benchmark]: Toolchain (without parser) took 7180.40 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.0 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -385.6 MB). Peak memory consumption was 381.5 MB. Max. memory is 7.1 GB. [2018-10-10 14:43:09,881 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 14:43:09,882 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-10 14:43:09,883 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.02 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 14:43:09,883 INFO L168 Benchmark]: Boogie Preprocessor took 58.00 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 14:43:09,884 INFO L168 Benchmark]: RCFGBuilder took 1029.06 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -785.3 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2018-10-10 14:43:09,885 INFO L168 Benchmark]: TraceAbstraction took 5698.64 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 389.2 MB). Peak memory consumption was 389.2 MB. Max. memory is 7.1 GB. [2018-10-10 14:43:09,890 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 315.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 73.02 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.00 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 1029.06 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -785.3 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5698.64 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 389.2 MB). Peak memory consumption was 389.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line -1). Cancelled while PathProgramDumpController was trying to verify (iteration 6). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line -1). Cancelled while PathProgramDumpController was trying to verify (iteration 6). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line -1). Cancelled while PathProgramDumpController was trying to verify (iteration 6). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line -1). Cancelled while PathProgramDumpController was trying to verify (iteration 6). - TimeoutResultAtElement [Line: 10]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 10). Cancelled while PathProgramDumpController was trying to verify (iteration 6). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line -1). Cancelled while PathProgramDumpController was trying to verify (iteration 6). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line -1). Cancelled while PathProgramDumpController was trying to verify (iteration 6). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line -1). Cancelled while PathProgramDumpController was trying to verify (iteration 6). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line -1). Cancelled while PathProgramDumpController was trying to verify (iteration 6). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 131 locations, 9 error locations. TIMEOUT Result, 5.6s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 3.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 550 SDtfs, 2888 SDslu, 1264 SDs, 0 SdLazy, 579 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 158 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=186occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 173 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 298 NumberOfCodeBlocks, 298 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 291 ConstructedInterpolants, 0 QuantifiedInterpolants, 62523 SizeOfPredicates, 12 NumberOfNonLiveVariables, 169 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 10/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Received shutdown request...