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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength2_true-valid-memsafety.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c5b1954-m [2018-10-10 11:30:48,072 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 11:30:48,077 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 11:30:48,090 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 11:30:48,090 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 11:30:48,091 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 11:30:48,092 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 11:30:48,094 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 11:30:48,096 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 11:30:48,096 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 11:30:48,097 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 11:30:48,098 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 11:30:48,098 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 11:30:48,099 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 11:30:48,101 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 11:30:48,101 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 11:30:48,102 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 11:30:48,104 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 11:30:48,106 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 11:30:48,108 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 11:30:48,109 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 11:30:48,110 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 11:30:48,112 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-10 11:30:48,113 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-10 11:30:48,113 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-10 11:30:48,114 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-10 11:30:48,115 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-10 11:30:48,116 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-10 11:30:48,116 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-10 11:30:48,117 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-10 11:30:48,118 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-10 11:30:48,119 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-10 11:30:48,119 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-10 11:30:48,119 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-10 11:30:48,120 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-10 11:30:48,121 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-10 11:30:48,121 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2018-10-10 11:30:48,152 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 11:30:48,153 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 11:30:48,155 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-10 11:30:48,155 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-10 11:30:48,155 INFO L133 SettingsManager]: * Use SBE=true [2018-10-10 11:30:48,155 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-10 11:30:48,156 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-10 11:30:48,156 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-10 11:30:48,156 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-10 11:30:48,156 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-10 11:30:48,156 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-10 11:30:48,157 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-10 11:30:48,158 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-10 11:30:48,158 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-10 11:30:48,158 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-10 11:30:48,158 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-10 11:30:48,158 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-10 11:30:48,159 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-10 11:30:48,159 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 11:30:48,159 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-10 11:30:48,159 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-10 11:30:48,159 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-10 11:30:48,160 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-10 11:30:48,161 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 11:30:48,161 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-10 11:30:48,161 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-10-10 11:30:48,162 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-10 11:30:48,162 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-10 11:30:48,162 INFO L133 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Dump automata to the following directory -> dump [2018-10-10 11:30:48,212 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 11:30:48,225 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 11:30:48,228 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 11:30:48,230 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-10 11:30:48,230 INFO L276 PluginConnector]: CDTParser initialized [2018-10-10 11:30:48,231 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength2_true-valid-memsafety.c [2018-10-10 11:30:48,540 INFO L217 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ca2c1180/45de6e1d9323410f89f28db2eeff9292/FLAG5b8b2a8e5 [2018-10-10 11:30:48,705 INFO L289 CDTParser]: Found 1 translation units. [2018-10-10 11:30:48,705 INFO L157 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength2_true-valid-memsafety.c [2018-10-10 11:30:48,711 INFO L337 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ca2c1180/45de6e1d9323410f89f28db2eeff9292/FLAG5b8b2a8e5 [2018-10-10 11:30:48,726 INFO L345 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ca2c1180/45de6e1d9323410f89f28db2eeff9292 [2018-10-10 11:30:48,736 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 11:30:48,737 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-10 11:30:48,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-10 11:30:48,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-10 11:30:48,743 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-10 11:30:48,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:30:48" (1/1) ... [2018-10-10 11:30:48,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68210a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:48, skipping insertion in model container [2018-10-10 11:30:48,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:30:48" (1/1) ... [2018-10-10 11:30:48,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-10 11:30:48,787 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-10 11:30:49,033 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 11:30:49,052 INFO L189 MainTranslator]: Completed pre-run [2018-10-10 11:30:49,079 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 11:30:49,098 INFO L193 MainTranslator]: Completed translation [2018-10-10 11:30:49,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:49 WrapperNode [2018-10-10 11:30:49,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-10 11:30:49,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-10 11:30:49,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-10 11:30:49,100 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-10 11:30:49,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:49" (1/1) ... [2018-10-10 11:30:49,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:49" (1/1) ... [2018-10-10 11:30:49,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-10 11:30:49,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 11:30:49,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 11:30:49,155 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 11:30:49,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:49" (1/1) ... [2018-10-10 11:30:49,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:49" (1/1) ... [2018-10-10 11:30:49,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:49" (1/1) ... [2018-10-10 11:30:49,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:49" (1/1) ... [2018-10-10 11:30:49,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:49" (1/1) ... [2018-10-10 11:30:49,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:49" (1/1) ... [2018-10-10 11:30:49,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:49" (1/1) ... [2018-10-10 11:30:49,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 11:30:49,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 11:30:49,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 11:30:49,191 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 11:30:49,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:49" (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 11:30:49,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 11:30:49,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 11:30:49,971 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 11:30:49,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:30:49 BoogieIcfgContainer [2018-10-10 11:30:49,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 11:30:49,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 11:30:49,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 11:30:49,977 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 11:30:49,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 11:30:48" (1/3) ... [2018-10-10 11:30:49,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@436ed8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:30:49, skipping insertion in model container [2018-10-10 11:30:49,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:49" (2/3) ... [2018-10-10 11:30:49,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@436ed8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:30:49, skipping insertion in model container [2018-10-10 11:30:49,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:30:49" (3/3) ... [2018-10-10 11:30:49,981 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_true-valid-memsafety.c [2018-10-10 11:30:49,991 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-10 11:30:50,000 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-10-10 11:30:50,017 INFO L257 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2018-10-10 11:30:50,045 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 11:30:50,046 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 11:30:50,046 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 11:30:50,047 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-10 11:30:50,047 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 11:30:50,047 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 11:30:50,047 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 11:30:50,047 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 11:30:50,048 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 11:30:50,066 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-10-10 11:30:50,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-10 11:30:50,075 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:30:50,076 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:30:50,079 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:30:50,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:30:50,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1805952520, now seen corresponding path program 1 times [2018-10-10 11:30:50,090 INFO L227 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-10 11:30:50,091 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-10 11:30:50,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:30:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:30:50,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 11:30:50,299 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 11:30:50,300 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (2)] Exception during sending of exit command (exit): Broken pipe [2018-10-10 11:30:50,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:30:50,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-10 11:30:50,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-10 11:30:50,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-10 11:30:50,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-10 11:30:50,327 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2018-10-10 11:30:50,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:30:50,750 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2018-10-10 11:30:50,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-10 11:30:50,752 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2018-10-10 11:30:50,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:30:50,764 INFO L225 Difference]: With dead ends: 81 [2018-10-10 11:30:50,765 INFO L226 Difference]: Without dead ends: 77 [2018-10-10 11:30:50,767 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-10 11:30:50,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-10 11:30:50,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 47. [2018-10-10 11:30:50,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-10 11:30:50,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2018-10-10 11:30:50,806 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 7 [2018-10-10 11:30:50,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:30:50,806 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2018-10-10 11:30:50,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-10 11:30:50,807 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2018-10-10 11:30:50,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-10 11:30:50,807 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:30:50,808 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:30:50,808 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:30:50,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:30:50,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1925215536, now seen corresponding path program 1 times [2018-10-10 11:30:50,809 INFO L227 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-10 11:30:50,810 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-10 11:30:50,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:30:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:30:50,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 11:30:50,946 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 11:30:50,947 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-10 11:30:50,949 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:30:50,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-10 11:30:50,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-10 11:30:50,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-10 11:30:50,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-10 11:30:50,952 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 5 states. [2018-10-10 11:30:51,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:30:51,290 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2018-10-10 11:30:51,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-10 11:30:51,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-10-10 11:30:51,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:30:51,293 INFO L225 Difference]: With dead ends: 84 [2018-10-10 11:30:51,293 INFO L226 Difference]: Without dead ends: 84 [2018-10-10 11:30:51,295 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-10-10 11:30:51,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-10 11:30:51,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 50. [2018-10-10 11:30:51,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-10 11:30:51,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2018-10-10 11:30:51,302 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 10 [2018-10-10 11:30:51,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:30:51,303 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2018-10-10 11:30:51,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-10 11:30:51,303 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2018-10-10 11:30:51,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-10 11:30:51,304 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:30:51,304 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:30:51,305 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:30:51,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:30:51,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1997317887, now seen corresponding path program 1 times [2018-10-10 11:30:51,306 INFO L227 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-10 11:30:51,306 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-10 11:30:51,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:30:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:30:51,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 11:30:51,404 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 11:30:51,404 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-10 11:30:51,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:30:51,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-10 11:30:51,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-10 11:30:51,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-10 11:30:51,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-10 11:30:51,413 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 5 states. [2018-10-10 11:30:51,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:30:51,526 INFO L93 Difference]: Finished difference Result 90 states and 97 transitions. [2018-10-10 11:30:51,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-10 11:30:51,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-10-10 11:30:51,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:30:51,528 INFO L225 Difference]: With dead ends: 90 [2018-10-10 11:30:51,529 INFO L226 Difference]: Without dead ends: 90 [2018-10-10 11:30:51,529 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-10 11:30:51,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-10-10 11:30:51,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 55. [2018-10-10 11:30:51,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-10 11:30:51,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2018-10-10 11:30:51,537 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 14 [2018-10-10 11:30:51,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:30:51,537 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2018-10-10 11:30:51,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-10 11:30:51,538 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2018-10-10 11:30:51,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-10 11:30:51,538 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:30:51,538 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:30:51,539 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:30:51,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:30:51,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1997319809, now seen corresponding path program 1 times [2018-10-10 11:30:51,540 INFO L227 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-10 11:30:51,540 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-10 11:30:51,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:30:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:30:51,609 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 11:30:51,651 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 11:30:51,653 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-10 11:30:51,660 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-10 11:30:51,661 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-10-10 11:30:51,703 INFO L700 Elim1Store]: detected not equals via solver [2018-10-10 11:30:51,705 INFO L700 Elim1Store]: detected not equals via solver [2018-10-10 11:30:51,706 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2018-10-10 11:30:51,708 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-10 11:30:51,745 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-10 11:30:51,745 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:16 [2018-10-10 11:30:51,923 INFO L682 Elim1Store]: detected equality via solver [2018-10-10 11:30:51,925 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 21 [2018-10-10 11:30:51,926 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-10 11:30:52,051 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-10 11:30:52,051 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:11 [2018-10-10 11:30:52,142 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 11:30:52,142 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-10 11:30:52,151 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:30:52,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-10 11:30:52,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-10 11:30:52,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-10 11:30:52,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-10 11:30:52,152 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 6 states. [2018-10-10 11:31:02,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:31:02,652 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2018-10-10 11:31:02,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-10 11:31:02,652 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-10-10 11:31:02,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:31:02,653 INFO L225 Difference]: With dead ends: 54 [2018-10-10 11:31:02,653 INFO L226 Difference]: Without dead ends: 54 [2018-10-10 11:31:02,654 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-10 11:31:02,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-10 11:31:02,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-10 11:31:02,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-10 11:31:02,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-10-10 11:31:02,660 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 14 [2018-10-10 11:31:02,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:31:02,660 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-10-10 11:31:02,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-10 11:31:02,661 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-10-10 11:31:02,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-10 11:31:02,661 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:31:02,661 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:31:02,662 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:31:02,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:31:02,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1787372031, now seen corresponding path program 1 times [2018-10-10 11:31:02,663 INFO L227 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-10 11:31:02,663 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-10 11:31:02,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:31:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:31:02,745 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 11:31:02,753 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 11:31:02,754 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-10 11:31:02,811 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 11:31:02,811 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-10 11:31:02,837 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-10 11:31:02,838 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:17 [2018-10-10 11:31:02,893 INFO L700 Elim1Store]: detected not equals via solver [2018-10-10 11:31:02,897 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-10-10 11:31:02,898 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-10 11:31:02,930 INFO L700 Elim1Store]: detected not equals via solver [2018-10-10 11:31:02,937 INFO L700 Elim1Store]: detected not equals via solver [2018-10-10 11:31:02,938 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2018-10-10 11:31:02,939 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-10 11:31:02,961 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-10 11:31:02,962 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:30, output treesize:12 [2018-10-10 11:31:03,008 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 11:31:03,008 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-10 11:31:03,010 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:31:03,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-10 11:31:03,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-10 11:31:03,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-10 11:31:03,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-10 11:31:03,012 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2018-10-10 11:31:03,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:31:03,277 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2018-10-10 11:31:03,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-10 11:31:03,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-10-10 11:31:03,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:31:03,279 INFO L225 Difference]: With dead ends: 74 [2018-10-10 11:31:03,279 INFO L226 Difference]: Without dead ends: 74 [2018-10-10 11:31:03,280 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-10 11:31:03,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-10 11:31:03,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 60. [2018-10-10 11:31:03,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-10 11:31:03,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2018-10-10 11:31:03,286 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 15 [2018-10-10 11:31:03,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:31:03,286 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2018-10-10 11:31:03,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-10 11:31:03,286 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2018-10-10 11:31:03,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-10 11:31:03,287 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:31:03,287 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:31:03,288 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:31:03,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:31:03,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1475677145, now seen corresponding path program 1 times [2018-10-10 11:31:03,289 INFO L227 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-10 11:31:03,289 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-10 11:31:03,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:31:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:31:03,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 11:31:03,504 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 14 treesize of output 11 [2018-10-10 11:31:03,505 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-10 11:31:03,515 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-10 11:31:03,516 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2018-10-10 11:31:03,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 11:31:03,557 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-10 11:31:03,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:31:03,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-10 11:31:03,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-10 11:31:03,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-10 11:31:03,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-10 11:31:03,565 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 6 states. [2018-10-10 11:31:04,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:31:04,081 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2018-10-10 11:31:04,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-10 11:31:04,081 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-10-10 11:31:04,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:31:04,083 INFO L225 Difference]: With dead ends: 82 [2018-10-10 11:31:04,083 INFO L226 Difference]: Without dead ends: 82 [2018-10-10 11:31:04,084 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-10-10 11:31:04,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-10 11:31:04,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 58. [2018-10-10 11:31:04,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-10 11:31:04,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2018-10-10 11:31:04,089 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 21 [2018-10-10 11:31:04,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:31:04,089 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2018-10-10 11:31:04,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-10 11:31:04,090 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2018-10-10 11:31:04,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-10 11:31:04,091 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:31:04,091 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:31:04,091 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:31:04,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:31:04,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1498648815, now seen corresponding path program 1 times [2018-10-10 11:31:04,092 INFO L227 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-10 11:31:04,092 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-10 11:31:04,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:31:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:31:04,201 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 11:31:04,207 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 11:31:04,208 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-10 11:31:04,260 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 11:31:04,260 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-10 11:31:04,275 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-10 11:31:04,276 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-10-10 11:31:04,316 INFO L700 Elim1Store]: detected not equals via solver [2018-10-10 11:31:04,319 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-10-10 11:31:04,320 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-10 11:31:04,348 INFO L700 Elim1Store]: detected not equals via solver [2018-10-10 11:31:04,350 INFO L700 Elim1Store]: detected not equals via solver [2018-10-10 11:31:04,352 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2018-10-10 11:31:04,352 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-10 11:31:04,370 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-10 11:31:04,371 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:27, output treesize:9 [2018-10-10 11:31:04,422 INFO L700 Elim1Store]: detected not equals via solver [2018-10-10 11:31:04,427 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-10-10 11:31:04,428 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-10 11:31:04,484 INFO L700 Elim1Store]: detected not equals via solver [2018-10-10 11:31:04,486 INFO L700 Elim1Store]: detected not equals via solver [2018-10-10 11:31:04,487 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2018-10-10 11:31:04,487 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-10 11:31:04,507 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-10 11:31:04,508 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:30, output treesize:12 [2018-10-10 11:31:04,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-10 11:31:04,556 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-10 11:31:04,930 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2018-10-10 11:31:04,960 INFO L682 Elim1Store]: detected equality via solver [2018-10-10 11:31:04,961 INFO L682 Elim1Store]: detected equality via solver [2018-10-10 11:31:04,962 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 9 [2018-10-10 11:31:04,963 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-10 11:31:05,022 INFO L682 Elim1Store]: detected equality via solver [2018-10-10 11:31:05,024 INFO L682 Elim1Store]: detected equality via solver [2018-10-10 11:31:05,026 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 14 [2018-10-10 11:31:05,026 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-10 11:31:05,084 INFO L682 Elim1Store]: detected equality via solver [2018-10-10 11:31:05,085 INFO L682 Elim1Store]: detected equality via solver [2018-10-10 11:31:05,087 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2018-10-10 11:31:05,088 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-10 11:31:05,141 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 3 dim-1 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-10-10 11:31:05,141 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 7 variables, input treesize:58, output treesize:23 [2018-10-10 11:31:05,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-10 11:31:05,691 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-10 11:31:05,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2018-10-10 11:31:05,721 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: cannot bring into simultaneous update form, |v_ULTIMATE.start_main_~#b~0.base_1| has two outvars in equality [(= (store |v_ULTIMATE.start_#Ultimate.alloc_old_#length_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1| |v_ULTIMATE.start_#Ultimate.alloc_~size_1|) |v_#length_1|), (= |v_ULTIMATE.start_#Ultimate.alloc_#res.offset_1| (_ bv0 32)), (= |v_ULTIMATE.start_main_~#b~0.base_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|), (= |v_ULTIMATE.start_#Ultimate.alloc_~size_1| (_ bv400 32)), (= (select |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|) (_ bv0 1)), (= |v_ULTIMATE.start_main_old_#valid_1| |v_#valid_4|), (not (= (_ bv0 32) |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|)), (= |v_ULTIMATE.start_main_~#b~0.offset_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.offset_1|), (= |v_ULTIMATE.start_#Ultimate.alloc_old_#length_1| |v_#length_2|), (= |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1| |v_#valid_4|), (= (store |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1| (_ bv1 1)) |v_#valid_3|), (= v_ULTIMATE.start_main_~i~2_1 (_ bv0 32))] at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.transitions.SimultaneousUpdate.computeSubstitutionMapping(SimultaneousUpdate.java:174) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.transitions.SimultaneousUpdate.extractUpdateRhs(SimultaneousUpdate.java:154) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.transitions.SimultaneousUpdate.computeSubstitutionMapping(SimultaneousUpdate.java:171) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.transitions.SimultaneousUpdate.extractUpdateRhs(SimultaneousUpdate.java:154) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.transitions.SimultaneousUpdate.(SimultaneousUpdate.java:104) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramDumper.addStatementsAndVariables(PathProgramDumper.java:634) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramDumper.constructTransitionStatements(PathProgramDumper.java:560) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramDumper.processTransition(PathProgramDumper.java:521) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramDumper.constructProcedureStatements(PathProgramDumper.java:489) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramDumper.constructNewImplementation(PathProgramDumper.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramDumper.(PathProgramDumper.java:194) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramDumpController.doDump(PathProgramDumpController.java:105) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramDumpController.reportPathProgram(PathProgramDumpController.java:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-10-10 11:31:05,728 INFO L168 Benchmark]: Toolchain (without parser) took 16991.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -446.0 MB). Peak memory consumption was 290.6 MB. Max. memory is 7.1 GB. [2018-10-10 11:31:05,729 INFO L168 Benchmark]: CDTParser took 0.20 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 11:31:05,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.66 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 11:31:05,732 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.74 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 11:31:05,732 INFO L168 Benchmark]: Boogie Preprocessor took 38.05 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 11:31:05,733 INFO L168 Benchmark]: RCFGBuilder took 781.26 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -768.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2018-10-10 11:31:05,734 INFO L168 Benchmark]: TraceAbstraction took 15753.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 311.9 MB). Peak memory consumption was 311.9 MB. Max. memory is 7.1 GB. [2018-10-10 11:31:05,738 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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. * CACSL2BoogieTranslator took 360.66 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 52.74 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 38.05 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 781.26 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -768.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15753.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 311.9 MB). Peak memory consumption was 311.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalArgumentException: cannot bring into simultaneous update form, |v_ULTIMATE.start_main_~#b~0.base_1| has two outvars in equality [(= (store |v_ULTIMATE.start_#Ultimate.alloc_old_#length_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1| |v_ULTIMATE.start_#Ultimate.alloc_~size_1|) |v_#length_1|), (= |v_ULTIMATE.start_#Ultimate.alloc_#res.offset_1| (_ bv0 32)), (= |v_ULTIMATE.start_main_~#b~0.base_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|), (= |v_ULTIMATE.start_#Ultimate.alloc_~size_1| (_ bv400 32)), (= (select |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|) (_ bv0 1)), (= |v_ULTIMATE.start_main_old_#valid_1| |v_#valid_4|), (not (= (_ bv0 32) |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|)), (= |v_ULTIMATE.start_main_~#b~0.offset_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.offset_1|), (= |v_ULTIMATE.start_#Ultimate.alloc_old_#length_1| |v_#length_2|), (= |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1| |v_#valid_4|), (= (store |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1| (_ bv1 1)) |v_#valid_3|), (= v_ULTIMATE.start_main_~i~2_1 (_ bv0 32))] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: cannot bring into simultaneous update form, |v_ULTIMATE.start_main_~#b~0.base_1| has two outvars in equality [(= (store |v_ULTIMATE.start_#Ultimate.alloc_old_#length_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1| |v_ULTIMATE.start_#Ultimate.alloc_~size_1|) |v_#length_1|), (= |v_ULTIMATE.start_#Ultimate.alloc_#res.offset_1| (_ bv0 32)), (= |v_ULTIMATE.start_main_~#b~0.base_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|), (= |v_ULTIMATE.start_#Ultimate.alloc_~size_1| (_ bv400 32)), (= (select |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|) (_ bv0 1)), (= |v_ULTIMATE.start_main_old_#valid_1| |v_#valid_4|), (not (= (_ bv0 32) |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|)), (= |v_ULTIMATE.start_main_~#b~0.offset_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.offset_1|), (= |v_ULTIMATE.start_#Ultimate.alloc_old_#length_1| |v_#length_2|), (= |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1| |v_#valid_4|), (= (store |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1| (_ bv1 1)) |v_#valid_3|), (= v_ULTIMATE.start_main_~i~2_1 (_ bv0 32))]: de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.transitions.SimultaneousUpdate.computeSubstitutionMapping(SimultaneousUpdate.java:174) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...