/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-fpi/brs2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:34:42,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:34:42,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:34:42,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:34:42,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:34:42,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:34:42,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:34:42,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:34:42,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:34:42,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:34:42,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:34:42,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:34:42,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:34:42,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:34:42,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:34:42,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:34:42,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:34:43,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:34:43,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:34:43,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:34:43,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:34:43,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:34:43,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:34:43,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:34:43,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:34:43,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:34:43,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:34:43,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:34:43,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:34:43,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:34:43,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:34:43,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:34:43,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:34:43,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:34:43,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:34:43,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:34:43,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:34:43,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:34:43,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:34:43,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:34:43,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:34:43,032 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 [2020-10-27 14:34:43,058 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:34:43,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:34:43,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:34:43,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:34:43,060 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:34:43,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:34:43,061 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:34:43,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:34:43,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:34:43,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:34:43,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:34:43,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:34:43,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:34:43,062 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:34:43,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:34:43,063 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:34:43,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:34:43,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:34:43,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:34:43,064 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:34:43,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:34:43,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:34:43,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:34:43,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:34:43,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:34:43,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:34:43,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:34:43,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:34:43,066 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:34:43,066 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:34:43,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:34:43,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:34:43,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:34:43,458 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:34:43,459 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:34:43,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs2f.c [2020-10-27 14:34:43,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1df0a845f/3cd8359f1ec54e1ea6a4aebf5486b869/FLAGfff6f96bd [2020-10-27 14:34:44,133 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:34:44,133 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs2f.c [2020-10-27 14:34:44,141 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1df0a845f/3cd8359f1ec54e1ea6a4aebf5486b869/FLAGfff6f96bd [2020-10-27 14:34:44,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1df0a845f/3cd8359f1ec54e1ea6a4aebf5486b869 [2020-10-27 14:34:44,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:34:44,490 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:34:44,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:34:44,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:34:44,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:34:44,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:34:44" (1/1) ... [2020-10-27 14:34:44,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3965b1a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:34:44, skipping insertion in model container [2020-10-27 14:34:44,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:34:44" (1/1) ... [2020-10-27 14:34:44,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:34:44,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:34:44,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:34:44,721 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:34:44,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:34:44,787 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:34:44,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:34:44 WrapperNode [2020-10-27 14:34:44,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:34:44,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:34:44,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:34:44,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:34:44,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:34:44" (1/1) ... [2020-10-27 14:34:44,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:34:44" (1/1) ... [2020-10-27 14:34:44,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:34:44" (1/1) ... [2020-10-27 14:34:44,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:34:44" (1/1) ... [2020-10-27 14:34:44,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:34:44" (1/1) ... [2020-10-27 14:34:44,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:34:44" (1/1) ... [2020-10-27 14:34:44,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:34:44" (1/1) ... [2020-10-27 14:34:44,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:34:44,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:34:44,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:34:44,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:34:44,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:34:44" (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 [2020-10-27 14:34:44,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:34:44,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:34:44,959 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:34:44,959 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 14:34:44,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:34:44,960 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:34:44,960 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:34:44,960 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:34:44,960 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:34:44,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:34:44,961 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 14:34:44,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:34:44,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:34:44,961 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 14:34:44,961 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:34:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 14:34:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:34:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:34:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:34:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:34:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:34:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:34:45,464 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:34:45,464 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 14:34:45,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:34:45 BoogieIcfgContainer [2020-10-27 14:34:45,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:34:45,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:34:45,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:34:45,475 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:34:45,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:34:44" (1/3) ... [2020-10-27 14:34:45,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7212531e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:34:45, skipping insertion in model container [2020-10-27 14:34:45,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:34:44" (2/3) ... [2020-10-27 14:34:45,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7212531e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:34:45, skipping insertion in model container [2020-10-27 14:34:45,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:34:45" (3/3) ... [2020-10-27 14:34:45,480 INFO L111 eAbstractionObserver]: Analyzing ICFG brs2f.c [2020-10-27 14:34:45,493 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:34:45,503 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:34:45,518 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:34:45,561 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:34:45,561 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:34:45,561 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:34:45,561 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:34:45,562 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:34:45,562 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:34:45,562 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:34:45,562 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:34:45,590 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-27 14:34:45,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 14:34:45,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:34:45,599 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, 1] [2020-10-27 14:34:45,600 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:34:45,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:34:45,610 INFO L82 PathProgramCache]: Analyzing trace with hash 288317380, now seen corresponding path program 1 times [2020-10-27 14:34:45,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:34:45,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561453506] [2020-10-27 14:34:45,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:34:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:45,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:45,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:45,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:46,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:46,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:34:46,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:34:46,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-27 14:34:46,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:46,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:46,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:34:46,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:46,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:34:46,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:34:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:46,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:46,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:46,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:34:46,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:46,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 14:34:46,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:46,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:46,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:34:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:46,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:46,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:46,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:46,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:46,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:34:46,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:34:46,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:46,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:46,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:34:46,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:46,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:46,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:34:46,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561453506] [2020-10-27 14:34:46,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:34:46,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:34:46,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418774095] [2020-10-27 14:34:46,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:34:46,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:34:46,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:34:46,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:34:46,256 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-27 14:34:46,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:34:46,403 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-10-27 14:34:46,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:34:46,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-27 14:34:46,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:34:46,413 INFO L225 Difference]: With dead ends: 61 [2020-10-27 14:34:46,413 INFO L226 Difference]: Without dead ends: 27 [2020-10-27 14:34:46,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:34:46,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-27 14:34:46,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-27 14:34:46,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-27 14:34:46,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-27 14:34:46,460 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 22 [2020-10-27 14:34:46,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:34:46,460 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-27 14:34:46,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:34:46,461 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-27 14:34:46,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 14:34:46,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:34:46,462 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, 1] [2020-10-27 14:34:46,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:34:46,463 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:34:46,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:34:46,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1231035376, now seen corresponding path program 1 times [2020-10-27 14:34:46,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:34:46,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072817940] [2020-10-27 14:34:46,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:34:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:46,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:46,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:46,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:46,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:34:46,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:34:46,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-27 14:34:46,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:46,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:34:46,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:34:46,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:34:46,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:46,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:34:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:46,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:46,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:46,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:34:46,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:46,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:34:46,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:46,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:46,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:46,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:46,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:34:46,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:34:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:46,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:46,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:46,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:46,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:46,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:34:46,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:46,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:34:46,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:46,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:34:46,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:46,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:34:46,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072817940] [2020-10-27 14:34:46,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:34:46,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 14:34:46,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38691872] [2020-10-27 14:34:46,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:34:46,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:34:46,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:34:46,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:34:46,986 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-10-27 14:34:47,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:34:47,199 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-10-27 14:34:47,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:34:47,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-27 14:34:47,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:34:47,201 INFO L225 Difference]: With dead ends: 40 [2020-10-27 14:34:47,202 INFO L226 Difference]: Without dead ends: 29 [2020-10-27 14:34:47,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:34:47,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-27 14:34:47,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-27 14:34:47,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 14:34:47,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-27 14:34:47,212 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 22 [2020-10-27 14:34:47,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:34:47,212 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-27 14:34:47,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:34:47,213 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-27 14:34:47,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 14:34:47,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:34:47,214 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:34:47,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:34:47,214 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:34:47,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:34:47,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1214934215, now seen corresponding path program 1 times [2020-10-27 14:34:47,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:34:47,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303457739] [2020-10-27 14:34:47,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:34:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:47,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:47,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:47,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:48,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:48,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 14:34:48,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:34:48,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 797 [2020-10-27 14:34:48,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:48,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:34:48,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 14:34:48,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 14:34:48,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:34:48,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:34:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:48,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:48,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:48,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:34:48,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:48,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 14:34:48,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:48,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:48,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:48,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:48,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:48,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:34:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:48,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:48,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:48,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:48,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:48,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:34:48,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:48,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:48,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:48,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:48,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:48,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:34:48,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303457739] [2020-10-27 14:34:48,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:34:48,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:34:48,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102199003] [2020-10-27 14:34:48,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:34:48,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:34:48,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:34:48,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:34:48,134 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 4 states. [2020-10-27 14:34:48,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:34:48,253 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-10-27 14:34:48,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:34:48,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-27 14:34:48,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:34:48,255 INFO L225 Difference]: With dead ends: 48 [2020-10-27 14:34:48,255 INFO L226 Difference]: Without dead ends: 33 [2020-10-27 14:34:48,256 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 [2020-10-27 14:34:48,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-27 14:34:48,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-10-27 14:34:48,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 14:34:48,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-27 14:34:48,263 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 28 [2020-10-27 14:34:48,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:34:48,264 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-27 14:34:48,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:34:48,264 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-27 14:34:48,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 14:34:48,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:34:48,265 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:34:48,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:34:48,266 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:34:48,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:34:48,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1894992585, now seen corresponding path program 1 times [2020-10-27 14:34:48,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:34:48,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218212655] [2020-10-27 14:34:48,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:34:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:48,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:48,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:48,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:48,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:48,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 14:34:48,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:34:48,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 598 [2020-10-27 14:34:48,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:48,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:34:48,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-27 14:34:48,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:34:48,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:49,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:34:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:49,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:49,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:49,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:34:49,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:49,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:34:49,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:49,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:49,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:49,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:49,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:49,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:34:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:49,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:49,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:49,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:49,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:49,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:49,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:49,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:49,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:49,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:49,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:49,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:34:49,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218212655] [2020-10-27 14:34:49,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:34:49,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 14:34:49,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296425173] [2020-10-27 14:34:49,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:34:49,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:34:49,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:34:49,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:34:49,082 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 8 states. [2020-10-27 14:34:49,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:34:49,502 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-10-27 14:34:49,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:34:49,503 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-27 14:34:49,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:34:49,504 INFO L225 Difference]: With dead ends: 41 [2020-10-27 14:34:49,504 INFO L226 Difference]: Without dead ends: 34 [2020-10-27 14:34:49,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:34:49,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-27 14:34:49,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-27 14:34:49,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 14:34:49,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-10-27 14:34:49,512 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 28 [2020-10-27 14:34:49,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:34:49,513 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-10-27 14:34:49,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:34:49,513 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-10-27 14:34:49,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 14:34:49,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:34:49,514 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:34:49,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:34:49,515 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:34:49,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:34:49,515 INFO L82 PathProgramCache]: Analyzing trace with hash 427046459, now seen corresponding path program 1 times [2020-10-27 14:34:49,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:34:49,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646799701] [2020-10-27 14:34:49,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:34:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:49,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:49,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:49,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:49,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:49,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:49,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:50,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:50,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:51,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:51,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 14:34:51,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 14:34:51,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2339 [2020-10-27 14:34:51,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:34:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:34:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:34:51,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:52,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:34:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:52,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:52,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:52,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:34:52,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:52,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:34:52,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:52,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:52,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:34:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:52,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:52,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:52,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:52,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:52,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:52,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:52,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:52,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:52,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:52,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:34:52,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646799701] [2020-10-27 14:34:52,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:34:52,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:34:52,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743770290] [2020-10-27 14:34:52,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:34:52,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:34:52,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:34:52,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:34:52,112 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 10 states. [2020-10-27 14:34:52,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:34:52,687 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2020-10-27 14:34:52,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:34:52,687 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-27 14:34:52,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:34:52,688 INFO L225 Difference]: With dead ends: 62 [2020-10-27 14:34:52,689 INFO L226 Difference]: Without dead ends: 55 [2020-10-27 14:34:52,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:34:52,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-27 14:34:52,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 46. [2020-10-27 14:34:52,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 14:34:52,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2020-10-27 14:34:52,699 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 31 [2020-10-27 14:34:52,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:34:52,699 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2020-10-27 14:34:52,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:34:52,700 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2020-10-27 14:34:52,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 14:34:52,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:34:52,701 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:34:52,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:34:52,701 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:34:52,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:34:52,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1548936887, now seen corresponding path program 2 times [2020-10-27 14:34:52,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:34:52,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299319375] [2020-10-27 14:34:52,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:34:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:52,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:52,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:52,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:52,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:52,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:53,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:53,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:53,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:53,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:53,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:53,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:53,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:56,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:56,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 14:34:56,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 14:34:56,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3821 [2020-10-27 14:34:56,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:34:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 14:34:56,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:34:56,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:56,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:34:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:56,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:56,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:56,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:34:56,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:56,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:34:56,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:56,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:56,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:56,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:56,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:56,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:34:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:56,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:56,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:56,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:56,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:56,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:56,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:56,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:56,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:56,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:56,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:56,716 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 14:34:56,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299319375] [2020-10-27 14:34:56,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:34:56,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:34:56,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517309396] [2020-10-27 14:34:56,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:34:56,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:34:56,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:34:56,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:34:56,719 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 10 states. [2020-10-27 14:34:56,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:34:56,972 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2020-10-27 14:34:56,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:34:56,973 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-10-27 14:34:56,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:34:56,974 INFO L225 Difference]: With dead ends: 71 [2020-10-27 14:34:56,974 INFO L226 Difference]: Without dead ends: 53 [2020-10-27 14:34:56,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:34:56,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-27 14:34:56,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2020-10-27 14:34:56,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-27 14:34:56,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2020-10-27 14:34:56,984 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 34 [2020-10-27 14:34:56,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:34:56,984 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2020-10-27 14:34:56,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:34:56,984 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2020-10-27 14:34:56,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 14:34:56,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:34:56,986 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:34:56,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:34:56,986 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:34:56,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:34:56,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1229914284, now seen corresponding path program 1 times [2020-10-27 14:34:56,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:34:56,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191161977] [2020-10-27 14:34:56,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:34:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:57,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:57,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:57,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:57,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:57,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:57,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:57,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:58,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:58,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:58,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:58,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:58,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:59,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:59,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:59,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:00,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:00,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:00,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:00,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:02,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:35:02,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 14:35:02,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-27 14:35:02,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:35:02,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:35:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:35:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 14:35:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:35:02,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:35:02,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:35:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:35:02,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:02,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:35:02,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:35:02,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:35:02,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:35:02,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:35:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:35:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:35:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:35:02,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:35:02,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:35:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:35:02,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:02,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:35:02,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:35:02,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:35:02,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:35:02,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:35:02,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:35:02,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:35:02,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:35:02,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:35:02,397 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:35:02,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191161977] [2020-10-27 14:35:02,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:35:02,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:35:02,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605879053] [2020-10-27 14:35:02,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:35:02,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:35:02,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:35:02,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:35:02,400 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 16 states. [2020-10-27 14:35:03,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:35:03,144 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2020-10-27 14:35:03,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:35:03,146 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 34 [2020-10-27 14:35:03,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:35:03,147 INFO L225 Difference]: With dead ends: 62 [2020-10-27 14:35:03,148 INFO L226 Difference]: Without dead ends: 55 [2020-10-27 14:35:03,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:35:03,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-27 14:35:03,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2020-10-27 14:35:03,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 14:35:03,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2020-10-27 14:35:03,163 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 34 [2020-10-27 14:35:03,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:35:03,165 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2020-10-27 14:35:03,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:35:03,165 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2020-10-27 14:35:03,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 14:35:03,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:35:03,167 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:35:03,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:35:03,167 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:35:03,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:35:03,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1090575102, now seen corresponding path program 2 times [2020-10-27 14:35:03,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:35:03,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171450940] [2020-10-27 14:35:03,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:35:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:35:03,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:03,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:03,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:03,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:03,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:03,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:03,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:03,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:03,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:04,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:04,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:05,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:06,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:06,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:06,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:06,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:08,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:35:08,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 14:35:08,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 14:35:08,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:35:08,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:35:08,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:35:08,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 14:35:08,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 14:35:08,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:35:08,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:35:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:35:08,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:08,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:35:08,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:35:08,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:35:08,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:35:08,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:35:08,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:35:08,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:35:08,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:35:08,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:35:08,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:35:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:35:08,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:08,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:35:08,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:35:08,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:35:08,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:35:08,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:35:08,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:35:08,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:35:08,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:35:08,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:35:08,493 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:35:08,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171450940] [2020-10-27 14:35:08,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:35:08,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:35:08,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243165115] [2020-10-27 14:35:08,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:35:08,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:35:08,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:35:08,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:35:08,496 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 12 states. [2020-10-27 14:35:08,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:35:08,879 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2020-10-27 14:35:08,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:35:08,880 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-10-27 14:35:08,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:35:08,883 INFO L225 Difference]: With dead ends: 79 [2020-10-27 14:35:08,883 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 14:35:08,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:35:08,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 14:35:08,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2020-10-27 14:35:08,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-27 14:35:08,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2020-10-27 14:35:08,902 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 37 [2020-10-27 14:35:08,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:35:08,902 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2020-10-27 14:35:08,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:35:08,903 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2020-10-27 14:35:08,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 14:35:08,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:35:08,906 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:35:08,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:35:08,907 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:35:08,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:35:08,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1003722988, now seen corresponding path program 3 times [2020-10-27 14:35:08,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:35:08,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058781892] [2020-10-27 14:35:08,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:35:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:35:08,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:08,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:09,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:09,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:09,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:09,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:09,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:09,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:09,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:09,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:09,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:10,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:10,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:10,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:10,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:11,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:13,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:35:13,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 14:35:13,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 14:35:13,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:35:13,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:35:13,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:35:13,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 14:35:13,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:35:13,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:35:14,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:35:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:35:14,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:14,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:35:14,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:35:14,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:35:14,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:35:14,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:35:14,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:35:14,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:35:14,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:35:14,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:35:14,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:35:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:35:14,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:14,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:35:14,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:35:14,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:35:14,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:35:14,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:35:14,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:35:14,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:35:14,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:35:14,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:35:14,139 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 14:35:14,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058781892] [2020-10-27 14:35:14,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:35:14,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:35:14,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882026934] [2020-10-27 14:35:14,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:35:14,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:35:14,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:35:14,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:35:14,148 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 12 states. [2020-10-27 14:35:14,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:35:14,806 INFO L93 Difference]: Finished difference Result 140 states and 164 transitions. [2020-10-27 14:35:14,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:35:14,807 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-10-27 14:35:14,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:35:14,809 INFO L225 Difference]: With dead ends: 140 [2020-10-27 14:35:14,809 INFO L226 Difference]: Without dead ends: 100 [2020-10-27 14:35:14,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:35:14,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-27 14:35:14,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 78. [2020-10-27 14:35:14,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-27 14:35:14,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2020-10-27 14:35:14,830 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 40 [2020-10-27 14:35:14,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:35:14,831 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2020-10-27 14:35:14,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:35:14,831 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2020-10-27 14:35:14,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 14:35:14,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:35:14,835 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:35:14,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:35:14,836 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:35:14,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:35:14,836 INFO L82 PathProgramCache]: Analyzing trace with hash 553320601, now seen corresponding path program 4 times [2020-10-27 14:35:14,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:35:14,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381409091] [2020-10-27 14:35:14,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:35:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 14:35:14,856 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 14:35:14,856 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 14:35:14,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:35:14,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:35:14 BoogieIcfgContainer [2020-10-27 14:35:14,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 14:35:14,885 INFO L168 Benchmark]: Toolchain (without parser) took 30398.66 ms. Allocated memory was 155.2 MB in the beginning and 389.0 MB in the end (delta: 233.8 MB). Free memory was 131.3 MB in the beginning and 324.6 MB in the end (delta: -193.3 MB). Peak memory consumption was 42.1 MB. Max. memory is 8.0 GB. [2020-10-27 14:35:14,886 INFO L168 Benchmark]: CDTParser took 1.29 ms. Allocated memory is still 155.2 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 14:35:14,887 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.20 ms. Allocated memory is still 155.2 MB. Free memory was 130.7 MB in the beginning and 120.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-27 14:35:14,888 INFO L168 Benchmark]: Boogie Preprocessor took 79.19 ms. Allocated memory is still 155.2 MB. Free memory was 120.6 MB in the beginning and 119.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 14:35:14,891 INFO L168 Benchmark]: RCFGBuilder took 597.90 ms. Allocated memory is still 155.2 MB. Free memory was 118.8 MB in the beginning and 134.3 MB in the end (delta: -15.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. [2020-10-27 14:35:14,892 INFO L168 Benchmark]: TraceAbstraction took 29410.89 ms. Allocated memory was 155.2 MB in the beginning and 389.0 MB in the end (delta: 233.8 MB). Free memory was 134.3 MB in the beginning and 324.6 MB in the end (delta: -190.2 MB). Peak memory consumption was 44.1 MB. Max. memory is 8.0 GB. [2020-10-27 14:35:14,903 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.29 ms. Allocated memory is still 155.2 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 295.20 ms. Allocated memory is still 155.2 MB. Free memory was 130.7 MB in the beginning and 120.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 79.19 ms. Allocated memory is still 155.2 MB. Free memory was 120.6 MB in the beginning and 119.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 597.90 ms. Allocated memory is still 155.2 MB. Free memory was 118.8 MB in the beginning and 134.3 MB in the end (delta: -15.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 29410.89 ms. Allocated memory was 155.2 MB in the beginning and 389.0 MB in the end (delta: 233.8 MB). Free memory was 134.3 MB in the beginning and 324.6 MB in the end (delta: -190.2 MB). Peak memory consumption was 44.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 [L31] COND TRUE i