/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/ldv-regression/test27-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:39:25,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:39:25,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:39:25,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:39:25,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:39:25,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:39:25,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:39:25,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:39:25,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:39:25,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:39:25,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:39:25,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:39:25,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:39:25,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:39:25,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:39:25,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:39:25,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:39:25,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:39:25,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:39:25,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:39:25,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:39:25,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:39:25,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:39:25,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:39:25,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:39:25,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:39:25,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:39:25,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:39:25,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:39:25,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:39:25,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:39:25,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:39:25,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:39:25,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:39:25,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:39:25,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:39:25,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:39:25,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:39:25,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:39:25,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:39:25,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:39:25,415 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 [2020-10-28 14:39:25,475 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:39:25,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:39:25,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:39:25,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:39:25,481 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:39:25,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:39:25,482 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:39:25,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:39:25,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:39:25,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:39:25,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:39:25,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:39:25,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:39:25,484 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:39:25,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:39:25,485 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:39:25,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:39:25,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:39:25,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:39:25,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:39:25,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:39:25,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:39:25,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:39:25,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:39:25,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:39:25,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:39:25,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:39:25,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:39:25,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:39:25,498 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:39:25,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:39:25,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:39:25,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:39:25,952 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:39:25,953 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:39:25,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test27-1.c [2020-10-28 14:39:26,042 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2fceab64/c2809a31785b4eda8d1261191010adc6/FLAGa365354bc [2020-10-28 14:39:26,715 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:39:26,716 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test27-1.c [2020-10-28 14:39:26,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2fceab64/c2809a31785b4eda8d1261191010adc6/FLAGa365354bc [2020-10-28 14:39:27,049 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2fceab64/c2809a31785b4eda8d1261191010adc6 [2020-10-28 14:39:27,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:39:27,062 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:39:27,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:39:27,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:39:27,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:39:27,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:39:27" (1/1) ... [2020-10-28 14:39:27,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18bc73e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:39:27, skipping insertion in model container [2020-10-28 14:39:27,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:39:27" (1/1) ... [2020-10-28 14:39:27,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:39:27,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:39:27,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:39:27,353 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:39:27,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:39:27,402 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:39:27,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:39:27 WrapperNode [2020-10-28 14:39:27,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:39:27,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:39:27,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:39:27,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:39:27,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:39:27" (1/1) ... [2020-10-28 14:39:27,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:39:27" (1/1) ... [2020-10-28 14:39:27,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:39:27" (1/1) ... [2020-10-28 14:39:27,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:39:27" (1/1) ... [2020-10-28 14:39:27,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:39:27" (1/1) ... [2020-10-28 14:39:27,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:39:27" (1/1) ... [2020-10-28 14:39:27,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:39:27" (1/1) ... [2020-10-28 14:39:27,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:39:27,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:39:27,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:39:27,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:39:27,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:39:27" (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 [2020-10-28 14:39:27,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:39:27,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:39:27,601 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:39:27,601 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-28 14:39:27,602 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:39:27,602 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:39:27,602 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:39:27,602 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:39:27,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:39:27,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:39:27,603 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 14:39:27,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:39:27,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:39:27,603 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:39:27,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:39:27,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:39:27,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:39:27,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:39:27,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:39:27,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:39:28,125 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:39:28,126 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 14:39:28,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:39:28 BoogieIcfgContainer [2020-10-28 14:39:28,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:39:28,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:39:28,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:39:28,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:39:28,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:39:27" (1/3) ... [2020-10-28 14:39:28,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb32953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:39:28, skipping insertion in model container [2020-10-28 14:39:28,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:39:27" (2/3) ... [2020-10-28 14:39:28,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb32953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:39:28, skipping insertion in model container [2020-10-28 14:39:28,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:39:28" (3/3) ... [2020-10-28 14:39:28,138 INFO L111 eAbstractionObserver]: Analyzing ICFG test27-1.c [2020-10-28 14:39:28,152 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:39:28,163 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:39:28,180 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:39:28,211 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:39:28,211 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:39:28,211 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:39:28,212 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:39:28,212 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:39:28,212 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:39:28,212 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:39:28,212 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:39:28,231 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-28 14:39:28,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-28 14:39:28,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:39:28,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:39:28,239 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:39:28,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:39:28,246 INFO L82 PathProgramCache]: Analyzing trace with hash 597245021, now seen corresponding path program 1 times [2020-10-28 14:39:28,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:39:28,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178563553] [2020-10-28 14:39:28,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:39:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:28,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:28,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:29,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:29,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 14:39:29,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:39:29,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 634 [2020-10-28 14:39:29,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:29,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:29,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:39:29,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 14:39:29,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:39:29,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 14:39:29,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:39:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:29,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:29,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:29,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:39:29,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:39:29,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:39:29,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:29,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:29,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:39:29,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:39:29,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:39:29,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:29,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:39:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:29,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:29,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:29,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:39:29,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:39:29,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:39:29,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:29,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:29,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:39:29,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:39:29,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:39:29,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:39:29,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178563553] [2020-10-28 14:39:29,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:39:29,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 14:39:29,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643003139] [2020-10-28 14:39:29,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 14:39:29,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:39:29,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 14:39:29,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 14:39:29,311 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-10-28 14:39:29,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:39:29,438 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions. [2020-10-28 14:39:29,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:39:29,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-28 14:39:29,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:39:29,449 INFO L225 Difference]: With dead ends: 47 [2020-10-28 14:39:29,449 INFO L226 Difference]: Without dead ends: 21 [2020-10-28 14:39:29,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 14:39:29,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-28 14:39:29,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-28 14:39:29,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-28 14:39:29,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-10-28 14:39:29,495 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2020-10-28 14:39:29,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:39:29,496 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-10-28 14:39:29,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 14:39:29,496 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-10-28 14:39:29,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 14:39:29,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:39:29,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:39:29,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:39:29,498 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:39:29,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:39:29,499 INFO L82 PathProgramCache]: Analyzing trace with hash -651701326, now seen corresponding path program 1 times [2020-10-28 14:39:29,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:39:29,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613087994] [2020-10-28 14:39:29,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:39:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:29,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:29,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:30,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:30,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:39:30,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:39:30,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650 [2020-10-28 14:39:30,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:30,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:30,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:39:30,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:39:30,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:39:30,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:30,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:39:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:30,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:30,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:30,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:39:30,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:39:30,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:39:30,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:30,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:30,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:39:30,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:39:30,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:39:30,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:30,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:39:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:30,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:30,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:30,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:39:30,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:39:30,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:39:30,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:30,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:30,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:39:30,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:39:30,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:39:30,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:39:30,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613087994] [2020-10-28 14:39:30,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:39:30,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:39:30,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536720686] [2020-10-28 14:39:30,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:39:30,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:39:30,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:39:30,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:39:30,287 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 4 states. [2020-10-28 14:39:30,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:39:30,369 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-10-28 14:39:30,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:39:30,369 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-28 14:39:30,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:39:30,371 INFO L225 Difference]: With dead ends: 36 [2020-10-28 14:39:30,371 INFO L226 Difference]: Without dead ends: 23 [2020-10-28 14:39:30,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:39:30,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-28 14:39:30,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-28 14:39:30,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-28 14:39:30,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-10-28 14:39:30,381 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 19 [2020-10-28 14:39:30,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:39:30,381 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-10-28 14:39:30,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:39:30,382 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-10-28 14:39:30,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 14:39:30,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:39:30,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:39:30,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:39:30,383 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:39:30,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:39:30,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1404900848, now seen corresponding path program 1 times [2020-10-28 14:39:30,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:39:30,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793134982] [2020-10-28 14:39:30,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:39:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:30,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:30,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:31,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:31,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 14:39:31,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:39:31,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 869 [2020-10-28 14:39:31,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:31,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:31,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:39:31,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:39:31,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 14:39:31,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:31,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:39:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:31,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:31,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:31,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:39:31,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:39:31,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:39:31,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:31,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:31,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:39:31,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:39:31,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:39:31,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:31,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 14:39:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:31,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:31,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:31,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:39:31,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:39:31,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:39:31,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:31,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:31,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:39:31,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:39:31,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:39:31,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:31,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:39:31,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793134982] [2020-10-28 14:39:31,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:39:31,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 14:39:31,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542452275] [2020-10-28 14:39:31,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:39:31,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:39:31,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:39:31,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:39:31,389 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 5 states. [2020-10-28 14:39:31,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:39:31,480 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-10-28 14:39:31,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:39:31,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-28 14:39:31,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:39:31,482 INFO L225 Difference]: With dead ends: 38 [2020-10-28 14:39:31,482 INFO L226 Difference]: Without dead ends: 25 [2020-10-28 14:39:31,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:39:31,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-28 14:39:31,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-10-28 14:39:31,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-28 14:39:31,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-10-28 14:39:31,490 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 21 [2020-10-28 14:39:31,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:39:31,491 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-10-28 14:39:31,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:39:31,491 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-10-28 14:39:31,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 14:39:31,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:39:31,492 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:39:31,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:39:31,492 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:39:31,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:39:31,493 INFO L82 PathProgramCache]: Analyzing trace with hash 619831534, now seen corresponding path program 2 times [2020-10-28 14:39:31,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:39:31,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666361550] [2020-10-28 14:39:31,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:39:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:31,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:31,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:32,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:32,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 14:39:32,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:39:32,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 881 [2020-10-28 14:39:32,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:32,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:32,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:39:32,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:39:32,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:39:32,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:32,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:39:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:32,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:32,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:32,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:39:32,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:39:32,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:39:32,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:32,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:32,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:39:32,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:39:32,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:39:32,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:32,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:39:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:32,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:32,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:32,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:39:32,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:39:32,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 14:39:32,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:32,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:32,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:39:32,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:39:32,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:39:32,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:32,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:39:32,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666361550] [2020-10-28 14:39:32,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:39:32,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 14:39:32,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79280962] [2020-10-28 14:39:32,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:39:32,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:39:32,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:39:32,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:39:32,514 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 6 states. [2020-10-28 14:39:32,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:39:32,618 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2020-10-28 14:39:32,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 14:39:32,619 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-28 14:39:32,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:39:32,620 INFO L225 Difference]: With dead ends: 40 [2020-10-28 14:39:32,621 INFO L226 Difference]: Without dead ends: 27 [2020-10-28 14:39:32,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:39:32,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-28 14:39:32,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-10-28 14:39:32,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-28 14:39:32,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-10-28 14:39:32,629 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2020-10-28 14:39:32,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:39:32,629 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-10-28 14:39:32,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:39:32,629 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-10-28 14:39:32,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 14:39:32,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:39:32,631 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:39:32,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:39:32,631 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:39:32,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:39:32,632 INFO L82 PathProgramCache]: Analyzing trace with hash 767465548, now seen corresponding path program 3 times [2020-10-28 14:39:32,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:39:32,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731056619] [2020-10-28 14:39:32,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:39:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:32,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:32,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:34,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:34,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 14:39:34,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:39:34,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1462 [2020-10-28 14:39:34,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:34,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:34,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:39:34,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:39:34,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:39:34,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:34,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:39:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:34,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:34,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:34,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:39:34,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:39:34,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:39:34,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:34,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:34,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:39:34,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:39:34,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:39:34,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:34,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 14:39:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:34,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:34,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:34,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:39:34,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:39:34,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:39:34,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:34,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:34,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:39:34,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:39:34,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:39:34,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:39:34,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731056619] [2020-10-28 14:39:34,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:39:34,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:39:34,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161696321] [2020-10-28 14:39:34,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:39:34,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:39:34,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:39:34,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:39:34,235 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 7 states. [2020-10-28 14:39:34,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:39:34,380 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-10-28 14:39:34,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:39:34,381 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-28 14:39:34,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:39:34,383 INFO L225 Difference]: With dead ends: 42 [2020-10-28 14:39:34,383 INFO L226 Difference]: Without dead ends: 29 [2020-10-28 14:39:34,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:39:34,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-28 14:39:34,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-28 14:39:34,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 14:39:34,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-10-28 14:39:34,396 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 25 [2020-10-28 14:39:34,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:39:34,396 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-10-28 14:39:34,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:39:34,396 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-10-28 14:39:34,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 14:39:34,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:39:34,399 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:39:34,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:39:34,400 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:39:34,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:39:34,400 INFO L82 PathProgramCache]: Analyzing trace with hash 909832234, now seen corresponding path program 4 times [2020-10-28 14:39:34,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:39:34,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951115807] [2020-10-28 14:39:34,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:39:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:34,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:34,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:36,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:36,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 14:39:36,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:39:36,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2084 [2020-10-28 14:39:36,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:36,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:36,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:39:36,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:39:36,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:39:36,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:36,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:39:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:36,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:36,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:36,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:39:36,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:39:36,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:39:36,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:36,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:36,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:39:36,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:39:36,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:39:36,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:36,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 14:39:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:36,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:36,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:36,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:39:36,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:39:36,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:39:36,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:36,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:36,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:39:36,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:39:36,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:39:36,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:36,651 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:39:36,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951115807] [2020-10-28 14:39:36,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:39:36,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:39:36,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909634323] [2020-10-28 14:39:36,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:39:36,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:39:36,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:39:36,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:39:36,654 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 8 states. [2020-10-28 14:39:36,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:39:36,765 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2020-10-28 14:39:36,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:39:36,766 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-28 14:39:36,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:39:36,767 INFO L225 Difference]: With dead ends: 44 [2020-10-28 14:39:36,767 INFO L226 Difference]: Without dead ends: 31 [2020-10-28 14:39:36,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:39:36,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-28 14:39:36,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-10-28 14:39:36,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-28 14:39:36,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-10-28 14:39:36,775 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2020-10-28 14:39:36,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:39:36,775 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-10-28 14:39:36,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:39:36,775 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-10-28 14:39:36,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 14:39:36,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:39:36,777 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:39:36,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:39:36,777 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:39:36,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:39:36,778 INFO L82 PathProgramCache]: Analyzing trace with hash 285264008, now seen corresponding path program 5 times [2020-10-28 14:39:36,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:39:36,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353089173] [2020-10-28 14:39:36,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:39:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:36,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:36,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:39,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:39,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 14:39:39,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:39:39,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2866 [2020-10-28 14:39:39,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:39,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:39,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:39:39,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 14:39:39,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 14:39:39,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:39,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:39:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:39,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:39,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:39,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:39:39,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:39:39,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:39:39,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:39,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:39,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:39:39,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:39:39,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:39:39,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:39,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 14:39:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:39,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:39,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:39,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:39:39,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:39:39,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:39:39,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:39,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:39,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:39:39,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:39:39,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:39:39,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:39,807 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-28 14:39:39,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353089173] [2020-10-28 14:39:39,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:39:39,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:39:39,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812767691] [2020-10-28 14:39:39,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:39:39,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:39:39,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:39:39,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:39:39,810 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 6 states. [2020-10-28 14:39:39,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:39:39,954 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-10-28 14:39:39,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 14:39:39,955 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-28 14:39:39,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:39:39,956 INFO L225 Difference]: With dead ends: 41 [2020-10-28 14:39:39,956 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 14:39:39,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:39:39,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 14:39:39,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-28 14:39:39,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-28 14:39:39,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-10-28 14:39:39,963 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 29 [2020-10-28 14:39:39,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:39:39,964 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-10-28 14:39:39,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:39:39,964 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-10-28 14:39:39,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 14:39:39,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:39:39,965 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:39:39,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:39:39,966 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:39:39,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:39:39,966 INFO L82 PathProgramCache]: Analyzing trace with hash 340877741, now seen corresponding path program 1 times [2020-10-28 14:39:39,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:39:39,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114013271] [2020-10-28 14:39:39,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:39:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:40,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:40,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:40,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:45,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:45,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 14:39:45,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:39:45,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 14:39:45,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:45,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:45,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:39:45,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:39:45,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:39:45,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:45,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:39:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:45,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:45,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:45,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:39:45,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:39:45,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:39:45,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:45,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:45,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:39:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:39:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:39:45,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:45,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 14:39:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:45,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:45,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:45,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:39:45,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:39:45,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:39:45,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:45,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:45,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:39:45,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:39:45,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:39:45,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:45,159 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:39:45,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114013271] [2020-10-28 14:39:45,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:39:45,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 14:39:45,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011341554] [2020-10-28 14:39:45,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:39:45,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:39:45,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:39:45,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:39:45,163 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 9 states. [2020-10-28 14:39:45,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:39:45,318 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2020-10-28 14:39:45,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:39:45,319 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-10-28 14:39:45,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:39:45,320 INFO L225 Difference]: With dead ends: 50 [2020-10-28 14:39:45,321 INFO L226 Difference]: Without dead ends: 35 [2020-10-28 14:39:45,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:39:45,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-28 14:39:45,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-28 14:39:45,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-28 14:39:45,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-10-28 14:39:45,337 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 31 [2020-10-28 14:39:45,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:39:45,338 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-10-28 14:39:45,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:39:45,338 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-10-28 14:39:45,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 14:39:45,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:39:45,340 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:39:45,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:39:45,340 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:39:45,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:39:45,341 INFO L82 PathProgramCache]: Analyzing trace with hash -308815093, now seen corresponding path program 2 times [2020-10-28 14:39:45,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:39:45,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891555424] [2020-10-28 14:39:45,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:39:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:45,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:45,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:46,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:50,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:50,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 14:39:50,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:39:50,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 14:39:50,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:50,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:50,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:39:50,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:39:50,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 14:39:50,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:50,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:39:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:50,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:50,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:50,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:39:50,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:39:50,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:39:50,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:50,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:50,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:39:50,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:39:50,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:39:50,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:50,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 14:39:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:50,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:50,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:50,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:39:50,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:39:50,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:39:50,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:50,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:50,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:39:50,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:39:50,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:39:50,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:50,558 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:39:50,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891555424] [2020-10-28 14:39:50,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:39:50,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 14:39:50,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898340249] [2020-10-28 14:39:50,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:39:50,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:39:50,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:39:50,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:39:50,566 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 10 states. [2020-10-28 14:39:50,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:39:50,694 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2020-10-28 14:39:50,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:39:50,694 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-10-28 14:39:50,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:39:50,695 INFO L225 Difference]: With dead ends: 52 [2020-10-28 14:39:50,695 INFO L226 Difference]: Without dead ends: 37 [2020-10-28 14:39:50,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:39:50,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-28 14:39:50,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-10-28 14:39:50,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-28 14:39:50,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-10-28 14:39:50,702 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 33 [2020-10-28 14:39:50,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:39:50,702 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-10-28 14:39:50,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:39:50,702 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-10-28 14:39:50,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-28 14:39:50,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:39:50,703 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:39:50,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:39:50,704 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:39:50,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:39:50,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1893370647, now seen corresponding path program 3 times [2020-10-28 14:39:50,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:39:50,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692260709] [2020-10-28 14:39:50,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:39:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:50,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:50,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:52,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:55,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:55,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 14:39:55,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:39:55,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-28 14:39:55,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:55,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:55,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:39:55,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 14:39:55,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:39:55,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:39:55,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:39:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:55,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:55,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:55,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:39:55,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:39:55,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:39:55,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:55,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:55,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:39:55,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:39:55,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:39:55,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:55,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 14:39:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:55,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:55,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:55,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:39:55,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:39:55,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:39:55,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:55,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:55,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:39:55,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:39:55,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:39:55,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:39:55,928 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-28 14:39:55,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692260709] [2020-10-28 14:39:55,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:39:55,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:39:55,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111372482] [2020-10-28 14:39:55,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:39:55,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:39:55,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:39:55,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:39:55,931 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 7 states. [2020-10-28 14:39:56,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:39:56,056 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-10-28 14:39:56,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:39:56,056 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-10-28 14:39:56,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:39:56,057 INFO L225 Difference]: With dead ends: 47 [2020-10-28 14:39:56,058 INFO L226 Difference]: Without dead ends: 38 [2020-10-28 14:39:56,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:39:56,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-28 14:39:56,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-28 14:39:56,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-28 14:39:56,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-10-28 14:39:56,064 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 35 [2020-10-28 14:39:56,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:39:56,064 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-10-28 14:39:56,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:39:56,064 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-10-28 14:39:56,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 14:39:56,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:39:56,065 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:39:56,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 14:39:56,066 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:39:56,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:39:56,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1677952562, now seen corresponding path program 4 times [2020-10-28 14:39:56,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:39:56,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322878394] [2020-10-28 14:39:56,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:39:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:56,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:56,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:58,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:01,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:01,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 14:40:01,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:40:01,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 14:40:01,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:01,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:01,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:40:01,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:40:01,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:40:01,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:40:01,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:40:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:01,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:01,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:01,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:40:01,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:01,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:40:01,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:01,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:01,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:40:01,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:40:01,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:40:01,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:40:01,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 14:40:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:01,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:01,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:01,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:40:01,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:01,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:40:01,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:01,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:01,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:40:01,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:40:01,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:40:01,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:40:01,248 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 14:40:01,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322878394] [2020-10-28 14:40:01,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:40:01,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:40:01,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482980148] [2020-10-28 14:40:01,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:40:01,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:40:01,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:40:01,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:40:01,251 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 11 states. [2020-10-28 14:40:01,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:40:01,376 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2020-10-28 14:40:01,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:40:01,376 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-10-28 14:40:01,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:40:01,377 INFO L225 Difference]: With dead ends: 58 [2020-10-28 14:40:01,377 INFO L226 Difference]: Without dead ends: 41 [2020-10-28 14:40:01,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:40:01,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-28 14:40:01,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-10-28 14:40:01,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-28 14:40:01,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-10-28 14:40:01,388 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 37 [2020-10-28 14:40:01,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:40:01,390 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-10-28 14:40:01,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:40:01,391 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-10-28 14:40:01,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 14:40:01,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:40:01,392 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:40:01,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 14:40:01,392 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:40:01,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:40:01,393 INFO L82 PathProgramCache]: Analyzing trace with hash 659420332, now seen corresponding path program 5 times [2020-10-28 14:40:01,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:40:01,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006599686] [2020-10-28 14:40:01,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:40:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:01,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:01,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:02,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:06,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:06,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 14:40:06,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:40:06,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-28 14:40:06,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:06,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:06,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:40:06,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 14:40:06,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:40:06,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:40:06,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:40:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:06,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:06,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:06,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:40:06,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:06,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:40:06,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:06,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:06,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:40:06,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:40:06,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:40:06,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:40:06,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:40:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:06,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:06,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:06,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:40:06,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:06,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:40:06,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:06,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:06,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:40:06,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:40:06,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:40:06,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:40:06,683 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-28 14:40:06,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006599686] [2020-10-28 14:40:06,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:40:06,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:40:06,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168620537] [2020-10-28 14:40:06,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:40:06,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:40:06,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:40:06,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:40:06,686 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 8 states. [2020-10-28 14:40:06,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:40:06,876 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-10-28 14:40:06,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:40:06,877 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-10-28 14:40:06,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:40:06,878 INFO L225 Difference]: With dead ends: 51 [2020-10-28 14:40:06,878 INFO L226 Difference]: Without dead ends: 42 [2020-10-28 14:40:06,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:40:06,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-28 14:40:06,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-28 14:40:06,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-28 14:40:06,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-10-28 14:40:06,887 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 39 [2020-10-28 14:40:06,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:40:06,887 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-10-28 14:40:06,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:40:06,887 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-10-28 14:40:06,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-28 14:40:06,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:40:06,888 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:40:06,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 14:40:06,889 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:40:06,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:40:06,889 INFO L82 PathProgramCache]: Analyzing trace with hash -872147759, now seen corresponding path program 6 times [2020-10-28 14:40:06,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:40:06,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705908814] [2020-10-28 14:40:06,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:40:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:06,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:07,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:11,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:11,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:11,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 14:40:11,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:40:11,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 14:40:11,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:11,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:11,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:40:11,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:40:11,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 14:40:11,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:40:12,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:40:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:12,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:12,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:12,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:40:12,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:12,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:40:12,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:12,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:12,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:40:12,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:40:12,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:40:12,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:40:12,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 14:40:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:12,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:12,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:12,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:40:12,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:12,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 14:40:12,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:12,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:40:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:40:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:40:12,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:40:12,492 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-28 14:40:12,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705908814] [2020-10-28 14:40:12,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:40:12,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:40:12,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537436504] [2020-10-28 14:40:12,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:40:12,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:40:12,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:40:12,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:40:12,495 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 11 states. [2020-10-28 14:40:12,814 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-10-28 14:40:13,212 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2020-10-28 14:40:13,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:40:13,469 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2020-10-28 14:40:13,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:40:13,470 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-10-28 14:40:13,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:40:13,471 INFO L225 Difference]: With dead ends: 42 [2020-10-28 14:40:13,471 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 14:40:13,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-28 14:40:13,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 14:40:13,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 14:40:13,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 14:40:13,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 14:40:13,473 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2020-10-28 14:40:13,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:40:13,474 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 14:40:13,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:40:13,474 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 14:40:13,474 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 14:40:13,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 14:40:13,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 14:40:13,821 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-28 14:40:13,821 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-28 14:40:13,821 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-28 14:40:13,822 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-28 14:40:13,822 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 14:40:13,823 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-28 14:40:13,823 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 14:40:13,823 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 14:40:13,823 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 14:40:13,823 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 14:40:13,823 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 14:40:13,823 INFO L274 CegarLoopResult]: For program point L29-2(lines 29 34) no Hoare annotation was computed. [2020-10-28 14:40:13,824 INFO L270 CegarLoopResult]: At program point L29-3(lines 29 34) the Hoare annotation is: (and (= |main_~#dummies~0.offset| 0) (not (= |main_~#dummy~0.base| |main_~#a~0.base|)) (not (= |main_~#dummy~0.base| |main_~#cont~0.base|)) (not (= |main_~#dummies~0.base| |main_~#a~0.base|)) (not (= |main_~#cont~0.base| |main_~#a~0.base|)) (not (= |main_~#dummies~0.base| |main_~#dummy~0.base|)) (not (= |main_~#dummies~0.base| |main_~#cont~0.base|))) [2020-10-28 14:40:13,824 INFO L274 CegarLoopResult]: For program point L29-4(lines 22 56) no Hoare annotation was computed. [2020-10-28 14:40:13,826 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 21 56) no Hoare annotation was computed. [2020-10-28 14:40:13,827 INFO L274 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-10-28 14:40:13,827 INFO L274 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-10-28 14:40:13,827 INFO L274 CegarLoopResult]: For program point L46-1(lines 46 48) no Hoare annotation was computed. [2020-10-28 14:40:13,827 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 21 56) no Hoare annotation was computed. [2020-10-28 14:40:13,827 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 21 56) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-28 14:40:13,827 INFO L270 CegarLoopResult]: At program point L47(lines 22 56) the Hoare annotation is: false [2020-10-28 14:40:13,827 INFO L274 CegarLoopResult]: For program point L43-1(lines 43 45) no Hoare annotation was computed. [2020-10-28 14:40:13,827 INFO L274 CegarLoopResult]: For program point L41(lines 41 49) no Hoare annotation was computed. [2020-10-28 14:40:13,828 INFO L270 CegarLoopResult]: At program point L43-3(lines 43 45) the Hoare annotation is: (let ((.cse2 (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|)) (.cse3 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (let ((.cse4 (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|)) (.cse5 (+ .cse2 (* .cse3 4)))) (let ((.cse0 (select (select |#memory_$Pointer$.base| .cse4) .cse5)) (.cse1 (select (select |#memory_$Pointer$.offset| .cse4) .cse5))) (and (= main_~pa~0.base (select (select |#memory_$Pointer$.base| .cse0) .cse1)) (= |main_~#dummies~0.offset| 0) (not (= |main_~#dummy~0.base| |main_~#a~0.base|)) (not (= |main_~#dummy~0.base| |main_~#cont~0.base|)) (= (+ (select (select |#memory_$Pointer$.offset| .cse0) .cse1) 4) main_~pa~0.offset) (not (= |main_~#dummies~0.base| |main_~#a~0.base|)) (not (= |main_~#cont~0.base| |main_~#a~0.base|)) (not (= |main_~#dummies~0.base| |main_~#dummy~0.base|)) (= .cse2 4) (<= main_~i~0 .cse3) (not (= |main_~#dummies~0.base| |main_~#cont~0.base|)))))) [2020-10-28 14:40:13,828 INFO L270 CegarLoopResult]: At program point L43-4(lines 43 45) the Hoare annotation is: (let ((.cse2 (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|)) (.cse3 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)) (.cse10 (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|))) (let ((.cse6 (select |#memory_$Pointer$.offset| .cse10)) (.cse8 (select |#memory_$Pointer$.base| .cse10)) (.cse9 (+ .cse2 (* .cse3 4)))) (let ((.cse0 (select .cse8 .cse9)) (.cse1 (select .cse6 .cse9))) (and (= main_~pa~0.base (select (select |#memory_$Pointer$.base| .cse0) .cse1)) (= |main_~#dummies~0.offset| 0) (not (= |main_~#dummy~0.base| |main_~#a~0.base|)) (not (= |main_~#dummy~0.base| |main_~#cont~0.base|)) (= (+ (select (select |#memory_$Pointer$.offset| .cse0) .cse1) 4) main_~pa~0.offset) (not (= |main_~#dummies~0.base| |main_~#a~0.base|)) (not (= |main_~#cont~0.base| |main_~#a~0.base|)) (not (= |main_~#dummies~0.base| |main_~#dummy~0.base|)) (= .cse2 4) (<= main_~i~0 .cse3) (= (let ((.cse7 (+ .cse2 (* main_~i~0 4)))) (let ((.cse4 (select .cse8 .cse7)) (.cse5 (select .cse6 .cse7))) (select (select |#memory_int| (select (select |#memory_$Pointer$.base| .cse4) .cse5)) (+ (select (select |#memory_$Pointer$.offset| .cse4) .cse5) 4)))) main_~i~0) (not (= |main_~#dummies~0.base| |main_~#cont~0.base|)))))) [2020-10-28 14:40:13,828 INFO L274 CegarLoopResult]: For program point L35(lines 35 50) no Hoare annotation was computed. [2020-10-28 14:40:13,828 INFO L277 CegarLoopResult]: At program point checkENTRY(lines 16 19) the Hoare annotation is: true [2020-10-28 14:40:13,828 INFO L274 CegarLoopResult]: For program point checkFINAL(lines 16 19) no Hoare annotation was computed. [2020-10-28 14:40:13,829 INFO L274 CegarLoopResult]: For program point checkEXIT(lines 16 19) no Hoare annotation was computed. [2020-10-28 14:40:13,844 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,845 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,845 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,846 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,847 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,847 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,847 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,848 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,848 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,848 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,849 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,849 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,850 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,850 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,851 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,853 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,854 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,854 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,854 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,854 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:40:13,855 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,855 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,855 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,856 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:40:13,856 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,856 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,856 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,857 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,857 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:40:13,857 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,857 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,858 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,858 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:40:13,859 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,859 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:40:13,865 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,865 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,866 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,867 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,867 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,868 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,868 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,868 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,869 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,869 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,869 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,869 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,869 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,870 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,874 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,874 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,875 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,875 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,875 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,875 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:40:13,875 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,876 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,876 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,876 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:40:13,876 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,877 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,877 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,877 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,877 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:40:13,878 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,878 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,878 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,880 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:40:13,880 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,880 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:40:13,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:40:13 BoogieIcfgContainer [2020-10-28 14:40:13,898 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:40:13,903 INFO L168 Benchmark]: Toolchain (without parser) took 46843.17 ms. Allocated memory was 157.3 MB in the beginning and 722.5 MB in the end (delta: 565.2 MB). Free memory was 133.5 MB in the beginning and 658.5 MB in the end (delta: -525.0 MB). Peak memory consumption was 41.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:40:13,904 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 157.3 MB. Free memory was 129.7 MB in the beginning and 129.6 MB in the end (delta: 102.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:40:13,905 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.67 ms. Allocated memory is still 157.3 MB. Free memory was 132.8 MB in the beginning and 122.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 14:40:13,907 INFO L168 Benchmark]: Boogie Preprocessor took 92.62 ms. Allocated memory is still 157.3 MB. Free memory was 122.7 MB in the beginning and 120.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:40:13,911 INFO L168 Benchmark]: RCFGBuilder took 628.71 ms. Allocated memory is still 157.3 MB. Free memory was 120.8 MB in the beginning and 136.5 MB in the end (delta: -15.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:40:13,912 INFO L168 Benchmark]: TraceAbstraction took 45768.23 ms. Allocated memory was 157.3 MB in the beginning and 722.5 MB in the end (delta: 565.2 MB). Free memory was 136.5 MB in the beginning and 658.5 MB in the end (delta: -522.0 MB). Peak memory consumption was 44.8 MB. Max. memory is 8.0 GB. [2020-10-28 14:40:13,920 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 157.3 MB. Free memory was 129.7 MB in the beginning and 129.6 MB in the end (delta: 102.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 338.67 ms. Allocated memory is still 157.3 MB. Free memory was 132.8 MB in the beginning and 122.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 92.62 ms. Allocated memory is still 157.3 MB. Free memory was 122.7 MB in the beginning and 120.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 628.71 ms. Allocated memory is still 157.3 MB. Free memory was 120.8 MB in the beginning and 136.5 MB in the end (delta: -15.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 45768.23 ms. Allocated memory was 157.3 MB in the beginning and 722.5 MB in the end (delta: 565.2 MB). Free memory was 136.5 MB in the beginning and 658.5 MB in the end (delta: -522.0 MB). Peak memory consumption was 44.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 43]: Loop Invariant [2020-10-28 14:40:13,938 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,938 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,938 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,939 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,939 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,939 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,939 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,940 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,940 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,941 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,941 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,941 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,941 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,942 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,942 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,942 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,942 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,942 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,942 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,943 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:40:13,943 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,947 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,947 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,947 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:40:13,947 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,947 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,948 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,948 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,948 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:40:13,948 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,948 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,949 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,949 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:40:13,949 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,951 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:40:13,952 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,952 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,952 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,953 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,953 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,953 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,953 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,953 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,954 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,954 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,956 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,956 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,956 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 14:40:13,957 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,957 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 14:40:13,957 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,957 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,957 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,957 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,958 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:40:13,958 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,958 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,958 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,958 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:40:13,958 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,959 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,959 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,959 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,959 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:40:13,959 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,959 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,959 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,960 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:40:13,960 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 14:40:13,960 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((((((((pa == #memory_$Pointer$[#memory_$Pointer$[#memory_$Pointer$[cont][cont]][#memory_$Pointer$[cont][cont] + unknown-#memory_int-unknown[pa][pa] * 4]][#memory_$Pointer$[#memory_$Pointer$[cont][cont]][#memory_$Pointer$[cont][cont] + unknown-#memory_int-unknown[pa][pa] * 4]] && dummies == 0) && !(dummy == a)) && !(dummy == cont)) && #memory_$Pointer$[#memory_$Pointer$[#memory_$Pointer$[cont][cont]][#memory_$Pointer$[cont][cont] + unknown-#memory_int-unknown[pa][pa] * 4]][#memory_$Pointer$[#memory_$Pointer$[cont][cont]][#memory_$Pointer$[cont][cont] + unknown-#memory_int-unknown[pa][pa] * 4]] + 4 == pa) && !(dummies == a)) && !(cont == a)) && !(dummies == dummy)) && #memory_$Pointer$[cont][cont] == 4) && i <= unknown-#memory_int-unknown[pa][pa]) && !(dummies == cont) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (((((dummies == 0 && !(dummy == a)) && !(dummy == cont)) && !(dummies == a)) && !(cont == a)) && !(dummies == dummy)) && !(dummies == cont) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 45.2s, OverallIterations: 13, TraceHistogramMax: 8, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 231 SDtfs, 87 SDslu, 667 SDs, 0 SdLazy, 667 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 8 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 34 PreInvPairs, 47 NumberOfFragments, 428 HoareAnnotationTreeSize, 34 FomulaSimplifications, 546 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 10 FomulaSimplificationsInter, 195 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 41.8s InterpolantComputationTime, 378 NumberOfCodeBlocks, 378 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 365 ConstructedInterpolants, 0 QuantifiedInterpolants, 100935 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 218/372 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...