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-memsafety/openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c5b1954-m [2018-10-10 14:41:55,274 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 14:41:55,276 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 14:41:55,288 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 14:41:55,288 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 14:41:55,290 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 14:41:55,291 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 14:41:55,293 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 14:41:55,295 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 14:41:55,295 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 14:41:55,296 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 14:41:55,297 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 14:41:55,298 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 14:41:55,299 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 14:41:55,300 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 14:41:55,301 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 14:41:55,302 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 14:41:55,304 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 14:41:55,306 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 14:41:55,307 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 14:41:55,312 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 14:41:55,313 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 14:41:55,319 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-10 14:41:55,333 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 14:41:55,361 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 14:41:55,361 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 14:41:55,362 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-10 14:41:55,362 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-10 14:41:55,365 INFO L133 SettingsManager]: * Use SBE=true [2018-10-10 14:41:55,366 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-10 14:41:55,366 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-10 14:41:55,366 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-10 14:41:55,366 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-10 14:41:55,367 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-10 14:41:55,367 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-10 14:41:55,367 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-10 14:41:55,367 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-10 14:41:55,367 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-10 14:41:55,367 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-10 14:41:55,368 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-10 14:41:55,368 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 14:41:55,368 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-10 14:41:55,368 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-10 14:41:55,369 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-10 14:41:55,369 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-10 14:41:55,369 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 14:41:55,369 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-10 14:41:55,369 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-10 14:41:55,370 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-10 14:41:55,370 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 14:41:55,440 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 14:41:55,455 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 14:41:55,460 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 14:41:55,461 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-10 14:41:55,462 INFO L276 PluginConnector]: CDTParser initialized [2018-10-10 14:41:55,463 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i [2018-10-10 14:41:55,781 INFO L217 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfa438c48/c75790d42ad740cea66acb4233a86f88/FLAG206d729c7 [2018-10-10 14:41:56,003 INFO L289 CDTParser]: Found 1 translation units. [2018-10-10 14:41:56,004 INFO L157 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-memsafety/openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i [2018-10-10 14:41:56,017 INFO L337 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfa438c48/c75790d42ad740cea66acb4233a86f88/FLAG206d729c7 [2018-10-10 14:41:56,032 INFO L345 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfa438c48/c75790d42ad740cea66acb4233a86f88 [2018-10-10 14:41:56,042 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 14:41:56,043 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-10 14:41:56,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-10 14:41:56,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-10 14:41:56,048 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-10 14:41:56,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 02:41:56" (1/1) ... [2018-10-10 14:41:56,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@560a6379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:56, skipping insertion in model container [2018-10-10 14:41:56,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 02:41:56" (1/1) ... [2018-10-10 14:41:56,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-10 14:41:56,109 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-10 14:41:56,331 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 14:41:56,343 INFO L189 MainTranslator]: Completed pre-run [2018-10-10 14:41:56,395 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 14:41:56,454 INFO L193 MainTranslator]: Completed translation [2018-10-10 14:41:56,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:56 WrapperNode [2018-10-10 14:41:56,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-10 14:41:56,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-10 14:41:56,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-10 14:41:56,456 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-10 14:41:56,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:56" (1/1) ... [2018-10-10 14:41:56,487 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:56" (1/1) ... [2018-10-10 14:41:56,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-10 14:41:56,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 14:41:56,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 14:41:56,524 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 14:41:56,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:56" (1/1) ... [2018-10-10 14:41:56,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:56" (1/1) ... [2018-10-10 14:41:56,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:56" (1/1) ... [2018-10-10 14:41:56,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:56" (1/1) ... [2018-10-10 14:41:56,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:56" (1/1) ... [2018-10-10 14:41:56,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:56" (1/1) ... [2018-10-10 14:41:56,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:56" (1/1) ... [2018-10-10 14:41:56,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 14:41:56,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 14:41:56,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 14:41:56,562 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 14:41:56,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-10 14:41:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 14:41:56,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 14:41:57,373 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 14:41:57,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 02:41:57 BoogieIcfgContainer [2018-10-10 14:41:57,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 14:41:57,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 14:41:57,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 14:41:57,379 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 14:41:57,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 02:41:56" (1/3) ... [2018-10-10 14:41:57,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60658c08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 02:41:57, skipping insertion in model container [2018-10-10 14:41:57,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:56" (2/3) ... [2018-10-10 14:41:57,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60658c08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 02:41:57, skipping insertion in model container [2018-10-10 14:41:57,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 02:41:57" (3/3) ... [2018-10-10 14:41:57,383 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i [2018-10-10 14:41:57,393 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-10 14:41:57,404 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-10-10 14:41:57,422 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-10-10 14:41:57,455 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 14:41:57,456 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 14:41:57,456 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 14:41:57,457 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-10 14:41:57,459 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 14:41:57,459 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 14:41:57,460 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 14:41:57,460 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 14:41:57,460 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 14:41:57,483 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2018-10-10 14:41:57,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-10 14:41:57,494 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:41:57,495 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:41:57,498 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:41:57,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:41:57,505 INFO L82 PathProgramCache]: Analyzing trace with hash -9386592, now seen corresponding path program 1 times [2018-10-10 14:41:57,507 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:41:57,508 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:41:57,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:57,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:41:57,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:41:58,037 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 14:41:58,039 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:41:58,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-10 14:41:58,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-10 14:41:58,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-10 14:41:58,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-10-10 14:41:58,064 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 10 states. [2018-10-10 14:41:58,756 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-10 14:41:59,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:41:59,448 INFO L93 Difference]: Finished difference Result 102 states and 106 transitions. [2018-10-10 14:41:59,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-10 14:41:59,449 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2018-10-10 14:41:59,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:41:59,460 INFO L225 Difference]: With dead ends: 102 [2018-10-10 14:41:59,461 INFO L226 Difference]: Without dead ends: 97 [2018-10-10 14:41:59,463 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-10-10 14:41:59,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-10 14:41:59,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 83. [2018-10-10 14:41:59,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-10 14:41:59,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2018-10-10 14:41:59,506 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 48 [2018-10-10 14:41:59,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:41:59,507 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2018-10-10 14:41:59,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-10 14:41:59,507 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2018-10-10 14:41:59,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-10 14:41:59,509 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:41:59,509 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:41:59,509 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:41:59,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:41:59,510 INFO L82 PathProgramCache]: Analyzing trace with hash -290984254, now seen corresponding path program 1 times [2018-10-10 14:41:59,510 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:41:59,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:41:59,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:59,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:41:59,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:42:00,367 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 14:42:00,368 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:42:00,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-10-10 14:42:00,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-10 14:42:00,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-10 14:42:00,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2018-10-10 14:42:00,372 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 16 states. [2018-10-10 14:42:01,304 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2018-10-10 14:42:01,492 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-10-10 14:42:02,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:42:02,164 INFO L93 Difference]: Finished difference Result 139 states and 142 transitions. [2018-10-10 14:42:02,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-10 14:42:02,164 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 49 [2018-10-10 14:42:02,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:42:02,166 INFO L225 Difference]: With dead ends: 139 [2018-10-10 14:42:02,167 INFO L226 Difference]: Without dead ends: 139 [2018-10-10 14:42:02,168 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2018-10-10 14:42:02,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-10 14:42:02,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 90. [2018-10-10 14:42:02,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-10 14:42:02,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2018-10-10 14:42:02,181 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 49 [2018-10-10 14:42:02,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:42:02,181 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2018-10-10 14:42:02,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-10 14:42:02,182 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2018-10-10 14:42:02,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-10 14:42:02,184 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:42:02,184 INFO L375 BasicCegarLoop]: trace histogram [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, 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 14:42:02,184 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:42:02,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:42:02,185 INFO L82 PathProgramCache]: Analyzing trace with hash 504865200, now seen corresponding path program 1 times [2018-10-10 14:42:02,185 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:42:02,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:42:02,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:02,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:42:02,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:42:03,167 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:42:03,168 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-10 14:42:03,168 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 14:42:03,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:42:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:42:03,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 14:42:03,782 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 14:42:03,783 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-10 14:42:03,801 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 14:42:03,802 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:12 [2018-10-10 14:42:09,368 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:42:09,399 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-10 14:42:09,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 36 [2018-10-10 14:42:09,440 WARN L240 PathProgramDumper]: Writing path program to file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/dump/openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i_3.bpl [2018-10-10 14:42:09,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-10 14:42:09,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-10 14:42:09,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1238, Unknown=2, NotChecked=0, Total=1332 [2018-10-10 14:42:09,446 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand 37 states. [2018-10-10 14:42:10,853 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2018-10-10 14:42:11,188 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2018-10-10 14:42:11,464 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2018-10-10 14:42:11,850 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 68 [2018-10-10 14:42:12,476 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 64 [2018-10-10 14:42:12,783 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2018-10-10 14:42:13,084 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 60 [2018-10-10 14:42:15,547 WARN L178 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 55 [2018-10-10 14:42:15,920 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2018-10-10 14:42:18,119 WARN L178 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 67 [2018-10-10 14:42:22,847 WARN L178 SmtUtils]: Spent 4.42 s on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-10 14:42:23,093 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-10 14:42:23,736 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2018-10-10 14:42:24,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:42:24,022 INFO L93 Difference]: Finished difference Result 163 states and 168 transitions. [2018-10-10 14:42:24,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-10 14:42:24,023 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 69 [2018-10-10 14:42:24,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:42:24,025 INFO L225 Difference]: With dead ends: 163 [2018-10-10 14:42:24,025 INFO L226 Difference]: Without dead ends: 163 [2018-10-10 14:42:24,027 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=649, Invalid=3131, Unknown=2, NotChecked=0, Total=3782 [2018-10-10 14:42:24,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-10 14:42:24,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 110. [2018-10-10 14:42:24,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-10 14:42:24,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 115 transitions. [2018-10-10 14:42:24,037 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 115 transitions. Word has length 69 [2018-10-10 14:42:24,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:42:24,037 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 115 transitions. [2018-10-10 14:42:24,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-10 14:42:24,037 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 115 transitions. [2018-10-10 14:42:24,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-10 14:42:24,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:42:24,039 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, 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 14:42:24,039 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:42:24,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:42:24,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1316966383, now seen corresponding path program 1 times [2018-10-10 14:42:24,040 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:42:24,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:42:24,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:24,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:42:24,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:42:24,275 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 14:42:24,275 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:42:24,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-10 14:42:24,276 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 14:42:24,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 14:42:24,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-10-10 14:42:24,277 INFO L87 Difference]: Start difference. First operand 110 states and 115 transitions. Second operand 9 states. [2018-10-10 14:42:24,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:42:24,573 INFO L93 Difference]: Finished difference Result 109 states and 114 transitions. [2018-10-10 14:42:24,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-10 14:42:24,573 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2018-10-10 14:42:24,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:42:24,574 INFO L225 Difference]: With dead ends: 109 [2018-10-10 14:42:24,575 INFO L226 Difference]: Without dead ends: 92 [2018-10-10 14:42:24,575 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2018-10-10 14:42:24,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-10 14:42:24,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-10-10 14:42:24,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-10 14:42:24,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2018-10-10 14:42:24,582 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 71 [2018-10-10 14:42:24,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:42:24,582 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2018-10-10 14:42:24,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 14:42:24,582 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2018-10-10 14:42:24,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-10 14:42:24,584 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:42:24,584 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:42:24,584 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:42:24,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:42:24,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1357812126, now seen corresponding path program 2 times [2018-10-10 14:42:24,585 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:42:24,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:42:24,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:24,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:42:24,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:42:26,750 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:42:26,750 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-10 14:42:26,750 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 14:42:26,759 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-10 14:42:26,809 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-10 14:42:26,809 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-10 14:42:26,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 14:42:39,691 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:42:39,712 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-10 14:42:39,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 34 [2018-10-10 14:42:39,713 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-10 14:42:39,717 WARN L205 ceAbstractionStarter]: Timeout [2018-10-10 14:42:39,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 02:42:39 BoogieIcfgContainer [2018-10-10 14:42:39,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 14:42:39,718 INFO L168 Benchmark]: Toolchain (without parser) took 43675.51 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 722.1 MB. Max. memory is 7.1 GB. [2018-10-10 14:42:39,719 INFO L168 Benchmark]: CDTParser took 0.22 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 14:42:39,720 INFO L168 Benchmark]: CACSL2BoogieTranslator took 410.82 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-10 14:42:39,720 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.92 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 14:42:39,721 INFO L168 Benchmark]: Boogie Preprocessor took 38.06 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 14:42:39,721 INFO L168 Benchmark]: RCFGBuilder took 812.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -791.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2018-10-10 14:42:39,722 INFO L168 Benchmark]: TraceAbstraction took 42341.83 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 259.0 MB). Free memory was 2.2 GB in the beginning and 2.5 GB in the end (delta: -312.1 MB). Peak memory consumption was 730.1 MB. Max. memory is 7.1 GB. [2018-10-10 14:42:39,727 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 410.82 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 66.92 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 38.06 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 812.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -791.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42341.83 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 259.0 MB). Free memory was 2.2 GB in the beginning and 2.5 GB in the end (delta: -312.1 MB). Peak memory consumption was 730.1 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 5). - TimeoutResultAtElement [Line: 553]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 553). Cancelled while PathProgramDumpController was trying to verify (iteration 5). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line -1). Cancelled while PathProgramDumpController was trying to verify (iteration 5). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 89 locations, 3 error locations. TIMEOUT Result, 42.2s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 18.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 316 SDtfs, 3108 SDslu, 2357 SDs, 0 SdLazy, 1122 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 22.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=3, 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, 4 MinimizatonAttempts, 116 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 306 NumberOfCodeBlocks, 306 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 301 ConstructedInterpolants, 8 QuantifiedInterpolants, 176909 SizeOfPredicates, 26 NumberOfNonLiveVariables, 136 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 0/14 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Received shutdown request...