/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-crafted/bor5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:19:02,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:19:02,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:19:02,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:19:02,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:19:02,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:19:02,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:19:02,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:19:02,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:19:02,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:19:02,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:19:02,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:19:02,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:19:02,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:19:02,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:19:02,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:19:02,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:19:02,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:19:02,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:19:02,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:19:02,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:19:02,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:19:02,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:19:02,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:19:02,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:19:02,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:19:02,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:19:02,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:19:02,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:19:02,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:19:02,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:19:02,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:19:02,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:19:02,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:19:02,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:19:02,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:19:02,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:19:02,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:19:02,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:19:02,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:19:02,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:19:02,426 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 03:19:02,480 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:19:02,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:19:02,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:19:02,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:19:02,483 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:19:02,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:19:02,483 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:19:02,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:19:02,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:19:02,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:19:02,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:19:02,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:19:02,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:19:02,485 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:19:02,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:19:02,485 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:19:02,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:19:02,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:19:02,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:19:02,486 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:19:02,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:19:02,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:19:02,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:19:02,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:19:02,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:19:02,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:19:02,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:19:02,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:19:02,488 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:19:02,488 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:19:02,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:19:02,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:19:02,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:19:02,939 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:19:02,940 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:19:02,941 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bor5.i [2020-10-29 03:19:03,032 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e6d3c6e0/2d5e05cffe1648fcb70faac6f5ceadc7/FLAGc5349f938 [2020-10-29 03:19:03,682 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:19:03,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/bor5.i [2020-10-29 03:19:03,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e6d3c6e0/2d5e05cffe1648fcb70faac6f5ceadc7/FLAGc5349f938 [2020-10-29 03:19:04,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e6d3c6e0/2d5e05cffe1648fcb70faac6f5ceadc7 [2020-10-29 03:19:04,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:19:04,039 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:19:04,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:19:04,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:19:04,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:19:04,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:19:04" (1/1) ... [2020-10-29 03:19:04,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e6033c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:04, skipping insertion in model container [2020-10-29 03:19:04,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:19:04" (1/1) ... [2020-10-29 03:19:04,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:19:04,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:19:04,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:19:04,272 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:19:04,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:19:04,323 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:19:04,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:04 WrapperNode [2020-10-29 03:19:04,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:19:04,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:19:04,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:19:04,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:19:04,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:04" (1/1) ... [2020-10-29 03:19:04,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:04" (1/1) ... [2020-10-29 03:19:04,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:04" (1/1) ... [2020-10-29 03:19:04,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:04" (1/1) ... [2020-10-29 03:19:04,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:04" (1/1) ... [2020-10-29 03:19:04,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:04" (1/1) ... [2020-10-29 03:19:04,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:04" (1/1) ... [2020-10-29 03:19:04,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:19:04,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:19:04,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:19:04,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:19:04,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:19:04,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:19:04,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:19:04,454 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:19:04,454 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2020-10-29 03:19:04,454 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:19:04,455 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:19:04,455 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:19:04,455 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:19:04,455 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:19:04,455 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:19:04,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:19:04,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:19:04,456 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2020-10-29 03:19:04,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:19:04,456 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:19:04,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:19:04,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:19:04,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:19:04,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:19:04,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:19:05,008 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:19:05,008 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 03:19:05,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:19:05 BoogieIcfgContainer [2020-10-29 03:19:05,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:19:05,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:19:05,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:19:05,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:19:05,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:19:04" (1/3) ... [2020-10-29 03:19:05,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d1912cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:19:05, skipping insertion in model container [2020-10-29 03:19:05,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:04" (2/3) ... [2020-10-29 03:19:05,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d1912cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:19:05, skipping insertion in model container [2020-10-29 03:19:05,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:19:05" (3/3) ... [2020-10-29 03:19:05,028 INFO L111 eAbstractionObserver]: Analyzing ICFG bor5.i [2020-10-29 03:19:05,043 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:19:05,049 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:19:05,065 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:19:05,117 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:19:05,117 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:19:05,117 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:19:05,117 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:19:05,118 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:19:05,118 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:19:05,118 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:19:05,118 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:19:05,140 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-29 03:19:05,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 03:19:05,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:05,153 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:05,153 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:05,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:05,162 INFO L82 PathProgramCache]: Analyzing trace with hash -62284816, now seen corresponding path program 1 times [2020-10-29 03:19:05,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:05,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470690003] [2020-10-29 03:19:05,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:05,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:05,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:05,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:05,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:05,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:06,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:06,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 03:19:06,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:06,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 922 [2020-10-29 03:19:06,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:06,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:19:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:19:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 03:19:06,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:19:06,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:06,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:06,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:06,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:06,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:06,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 03:19:06,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:06,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:06,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:06,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:06,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:06,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:06,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 03:19:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:06,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:06,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:06,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:06,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:06,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:06,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 03:19:06,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:06,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:06,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:19:06,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:06,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:19:06,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:19:06,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 03:19:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:06,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:06,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:06,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:06,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:06,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:06,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 03:19:06,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:06,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:06,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:19:06,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:06,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:19:06,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:06,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 03:19:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:06,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:06,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:06,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:06,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:06,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:06,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 03:19:06,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:06,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:06,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:06,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 03:19:06,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:06,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:06,635 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 03:19:06,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470690003] [2020-10-29 03:19:06,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:19:06,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:19:06,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443558032] [2020-10-29 03:19:06,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:19:06,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:06,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:19:06,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:19:06,682 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 5 states. [2020-10-29 03:19:06,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:06,961 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2020-10-29 03:19:06,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:19:06,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-10-29 03:19:06,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:06,972 INFO L225 Difference]: With dead ends: 69 [2020-10-29 03:19:06,972 INFO L226 Difference]: Without dead ends: 30 [2020-10-29 03:19:06,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:19:06,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-29 03:19:07,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-29 03:19:07,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-29 03:19:07,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-29 03:19:07,023 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 35 [2020-10-29 03:19:07,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:07,024 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-29 03:19:07,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:19:07,024 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-29 03:19:07,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 03:19:07,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:07,027 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:07,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:19:07,027 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:07,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:07,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1622310456, now seen corresponding path program 1 times [2020-10-29 03:19:07,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:07,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967707579] [2020-10-29 03:19:07,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:07,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:07,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:07,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:07,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:07,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:07,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:07,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:09,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:09,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 03:19:09,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:19:09,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2025 [2020-10-29 03:19:09,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:09,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:09,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:19:09,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:19:09,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 03:19:09,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:09,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:09,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:09,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:09,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:09,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:09,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:19:09,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:09,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:09,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:09,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:09,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:09,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:09,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 03:19:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:09,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:09,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:09,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:09,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:09,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:09,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 03:19:09,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:09,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:09,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:19:09,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:09,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:19:09,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:09,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 03:19:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:09,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:09,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:09,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:09,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:09,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:09,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 03:19:09,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:09,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:19:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:19:09,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:09,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 03:19:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:09,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:09,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:09,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:09,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:09,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 03:19:09,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:09,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:19:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:09,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 03:19:09,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967707579] [2020-10-29 03:19:09,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:19:09,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 03:19:09,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558346966] [2020-10-29 03:19:09,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:19:09,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:09,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:19:09,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:19:09,228 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2020-10-29 03:19:09,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:09,442 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-29 03:19:09,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:19:09,443 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-10-29 03:19:09,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:09,444 INFO L225 Difference]: With dead ends: 52 [2020-10-29 03:19:09,445 INFO L226 Difference]: Without dead ends: 32 [2020-10-29 03:19:09,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:19:09,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-29 03:19:09,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-29 03:19:09,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 03:19:09,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-29 03:19:09,455 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2020-10-29 03:19:09,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:09,456 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-29 03:19:09,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:19:09,456 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-29 03:19:09,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 03:19:09,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:09,458 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:09,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:19:09,458 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:09,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:09,459 INFO L82 PathProgramCache]: Analyzing trace with hash -274705114, now seen corresponding path program 1 times [2020-10-29 03:19:09,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:09,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432732479] [2020-10-29 03:19:09,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:09,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:09,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:09,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 03:19:09,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:09,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 03:19:09,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:09,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:09,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:19:09,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:19:09,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:19:09,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:09,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:09,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:09,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:09,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:09,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:09,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:19:09,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:09,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:09,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:09,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:09,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:09,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:09,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 03:19:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:09,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:09,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:09,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 03:19:09,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:09,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:19:09,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:09,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:09,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:09,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 03:19:09,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:09,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:09,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 03:19:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:09,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:09,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:09,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 03:19:09,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:09,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:19:09,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:09,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:09,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:09,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 03:19:09,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:09,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:09,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:19:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:09,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:09,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:09,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 03:19:09,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:09,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:19:09,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:09,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:09,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:09,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 03:19:09,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:09,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:09,656 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-29 03:19:09,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432732479] [2020-10-29 03:19:09,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:19:09,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:19:09,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76897357] [2020-10-29 03:19:09,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:19:09,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:09,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:19:09,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:19:09,659 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 4 states. [2020-10-29 03:19:09,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:09,773 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2020-10-29 03:19:09,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:19:09,774 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-29 03:19:09,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:09,775 INFO L225 Difference]: With dead ends: 55 [2020-10-29 03:19:09,775 INFO L226 Difference]: Without dead ends: 33 [2020-10-29 03:19:09,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:19:09,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-29 03:19:09,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-29 03:19:09,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-29 03:19:09,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-29 03:19:09,785 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 43 [2020-10-29 03:19:09,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:09,785 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-29 03:19:09,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:19:09,785 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-29 03:19:09,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 03:19:09,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:09,787 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:09,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:19:09,788 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:09,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:09,788 INFO L82 PathProgramCache]: Analyzing trace with hash -11654744, now seen corresponding path program 1 times [2020-10-29 03:19:09,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:09,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988695194] [2020-10-29 03:19:09,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:09,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:09,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:09,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 03:19:09,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:09,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-29 03:19:09,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:09,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:09,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:19:09,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:19:09,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:19:09,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:10,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:10,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:10,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:10,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:10,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:10,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:19:10,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:10,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:10,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:10,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:10,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:10,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:10,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 03:19:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:10,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:10,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:10,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 03:19:10,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:10,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:19:10,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:10,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:10,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:10,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 03:19:10,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:10,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:10,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 03:19:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:10,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:10,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:10,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 03:19:10,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:10,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:19:10,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:10,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:10,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:10,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 03:19:10,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:10,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:10,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 03:19:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:10,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:10,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:10,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 03:19:10,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:10,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:19:10,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:10,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:10,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:10,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 03:19:10,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:10,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:10,095 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-29 03:19:10,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988695194] [2020-10-29 03:19:10,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:10,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:19:10,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062715310] [2020-10-29 03:19:10,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:19:10,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:10,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:19:10,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:19:10,097 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2020-10-29 03:19:10,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:10,213 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-10-29 03:19:10,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:19:10,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-29 03:19:10,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:10,215 INFO L225 Difference]: With dead ends: 56 [2020-10-29 03:19:10,215 INFO L226 Difference]: Without dead ends: 34 [2020-10-29 03:19:10,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:19:10,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-29 03:19:10,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-29 03:19:10,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-29 03:19:10,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-29 03:19:10,224 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 45 [2020-10-29 03:19:10,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:10,224 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-29 03:19:10,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:19:10,224 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-29 03:19:10,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 03:19:10,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:10,226 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-29 03:19:10,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:19:10,226 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:10,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:10,227 INFO L82 PathProgramCache]: Analyzing trace with hash -623319638, now seen corresponding path program 2 times [2020-10-29 03:19:10,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:10,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971444075] [2020-10-29 03:19:10,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 03:19:10,258 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 03:19:10,258 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 03:19:10,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:19:10,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 03:19:10 BoogieIcfgContainer [2020-10-29 03:19:10,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 03:19:10,290 INFO L168 Benchmark]: Toolchain (without parser) took 6254.53 ms. Allocated memory was 151.0 MB in the beginning and 226.5 MB in the end (delta: 75.5 MB). Free memory was 126.6 MB in the beginning and 125.7 MB in the end (delta: 942.5 kB). Peak memory consumption was 77.8 MB. Max. memory is 8.0 GB. [2020-10-29 03:19:10,291 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 151.0 MB. Free memory is still 106.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 03:19:10,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.75 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 115.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 03:19:10,292 INFO L168 Benchmark]: Boogie Preprocessor took 43.68 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 03:19:10,293 INFO L168 Benchmark]: RCFGBuilder took 643.08 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 96.8 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-10-29 03:19:10,294 INFO L168 Benchmark]: TraceAbstraction took 5268.52 ms. Allocated memory was 151.0 MB in the beginning and 226.5 MB in the end (delta: 75.5 MB). Free memory was 96.4 MB in the beginning and 125.7 MB in the end (delta: -29.3 MB). Peak memory consumption was 47.4 MB. Max. memory is 8.0 GB. [2020-10-29 03:19:10,298 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 151.0 MB. Free memory is still 106.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 283.75 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 115.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.68 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 643.08 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 96.8 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5268.52 ms. Allocated memory was 151.0 MB in the beginning and 226.5 MB in the end (delta: 75.5 MB). Free memory was 96.4 MB in the beginning and 125.7 MB in the end (delta: -29.3 MB). Peak memory consumption was 47.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 25. Possible FailurePath: [L17] int N; [L32] N = __VERIFIER_nondet_int() [L33] COND TRUE N > 1 [L34] int x[N]; [L35] int temp; [L36] int ret; [L37] int ret2; [L38] int ret5; [L40] int i = 0; [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ [L40] COND FALSE !(i < N) [L45] CALL, EXPR bor(x) [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 [L24] COND TRUE i < N [L25] EXPR x[i] [L25] res = res | x[i] [L24] i++ [L24] COND FALSE !(i < N) [L27] return res; [L45] RET, EXPR bor(x) [L45] ret = bor(x) [L47] EXPR x[0] [L47] temp=x[0] [L47] EXPR x[1] [L47] x[0] = x[1] [L47] x[1] = temp [L48] CALL, EXPR bor(x) [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 [L24] COND TRUE i < N [L25] EXPR x[i] [L25] res = res | x[i] [L24] i++ [L24] COND FALSE !(i < N) [L27] return res; [L48] RET, EXPR bor(x) [L48] ret2 = bor(x) [L49] EXPR x[0] [L49] temp=x[0] [L50] int i =0 ; [L50] COND TRUE i