/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/loops-crafted-1/nested5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 15:13:21,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 15:13:21,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 15:13:21,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 15:13:21,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 15:13:21,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 15:13:21,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 15:13:21,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 15:13:21,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 15:13:21,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 15:13:21,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 15:13:21,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 15:13:21,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 15:13:21,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 15:13:22,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 15:13:22,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 15:13:22,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 15:13:22,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 15:13:22,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 15:13:22,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 15:13:22,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 15:13:22,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 15:13:22,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 15:13:22,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 15:13:22,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 15:13:22,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 15:13:22,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 15:13:22,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 15:13:22,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 15:13:22,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 15:13:22,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 15:13:22,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 15:13:22,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 15:13:22,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 15:13:22,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 15:13:22,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 15:13:22,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 15:13:22,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 15:13:22,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 15:13:22,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 15:13:22,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 15:13:22,058 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 15:13:22,109 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 15:13:22,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 15:13:22,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 15:13:22,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 15:13:22,114 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 15:13:22,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 15:13:22,114 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 15:13:22,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 15:13:22,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 15:13:22,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 15:13:22,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 15:13:22,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 15:13:22,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 15:13:22,117 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 15:13:22,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 15:13:22,117 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 15:13:22,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 15:13:22,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 15:13:22,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 15:13:22,118 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 15:13:22,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 15:13:22,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:13:22,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 15:13:22,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 15:13:22,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 15:13:22,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 15:13:22,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 15:13:22,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 15:13:22,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 15:13:22,120 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 15:13:22,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 15:13:22,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 15:13:22,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 15:13:22,545 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 15:13:22,546 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 15:13:22,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2020-10-28 15:13:22,619 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cc1ba3f6/8ec357a875774d08a94dd3f7a4a09bdf/FLAG9424d8387 [2020-10-28 15:13:23,197 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 15:13:23,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2020-10-28 15:13:23,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cc1ba3f6/8ec357a875774d08a94dd3f7a4a09bdf/FLAG9424d8387 [2020-10-28 15:13:23,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cc1ba3f6/8ec357a875774d08a94dd3f7a4a09bdf [2020-10-28 15:13:23,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 15:13:23,570 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 15:13:23,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 15:13:23,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 15:13:23,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 15:13:23,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:13:23" (1/1) ... [2020-10-28 15:13:23,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a8f6e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:13:23, skipping insertion in model container [2020-10-28 15:13:23,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:13:23" (1/1) ... [2020-10-28 15:13:23,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 15:13:23,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 15:13:23,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:13:23,830 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 15:13:23,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:13:23,866 INFO L208 MainTranslator]: Completed translation [2020-10-28 15:13:23,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:13:23 WrapperNode [2020-10-28 15:13:23,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 15:13:23,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 15:13:23,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 15:13:23,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 15:13:23,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:13:23" (1/1) ... [2020-10-28 15:13:23,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:13:23" (1/1) ... [2020-10-28 15:13:23,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:13:23" (1/1) ... [2020-10-28 15:13:23,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:13:23" (1/1) ... [2020-10-28 15:13:23,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:13:23" (1/1) ... [2020-10-28 15:13:23,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:13:23" (1/1) ... [2020-10-28 15:13:23,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:13:23" (1/1) ... [2020-10-28 15:13:23,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 15:13:23,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 15:13:23,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 15:13:23,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 15:13:23,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:13:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:13:24,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 15:13:24,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 15:13:24,035 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 15:13:24,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 15:13:24,036 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 15:13:24,036 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 15:13:24,036 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 15:13:24,036 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 15:13:24,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 15:13:24,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 15:13:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 15:13:24,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 15:13:24,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 15:13:24,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 15:13:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 15:13:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 15:13:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 15:13:24,426 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 15:13:24,426 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-28 15:13:24,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:13:24 BoogieIcfgContainer [2020-10-28 15:13:24,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 15:13:24,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 15:13:24,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 15:13:24,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 15:13:24,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 03:13:23" (1/3) ... [2020-10-28 15:13:24,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eaa8b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:13:24, skipping insertion in model container [2020-10-28 15:13:24,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:13:23" (2/3) ... [2020-10-28 15:13:24,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eaa8b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:13:24, skipping insertion in model container [2020-10-28 15:13:24,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:13:24" (3/3) ... [2020-10-28 15:13:24,439 INFO L111 eAbstractionObserver]: Analyzing ICFG nested5-1.c [2020-10-28 15:13:24,469 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 15:13:24,475 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 15:13:24,491 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 15:13:24,519 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 15:13:24,519 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 15:13:24,519 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 15:13:24,520 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 15:13:24,520 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 15:13:24,520 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 15:13:24,520 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 15:13:24,521 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 15:13:24,542 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-28 15:13:24,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 15:13:24,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:13:24,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:13:24,554 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:13:24,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:13:24,561 INFO L82 PathProgramCache]: Analyzing trace with hash -124765521, now seen corresponding path program 1 times [2020-10-28 15:13:24,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:13:24,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653206521] [2020-10-28 15:13:24,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:13:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:24,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:24,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:24,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 15:13:24,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:24,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-28 15:13:24,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:24,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:24,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:13:24,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 15:13:24,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:13:24,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 15:13:25,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:13:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:25,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:25,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:25,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:13:25,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:25,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 15:13:25,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:25,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:25,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:13:25,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:13:25,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:13:25,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:13:25,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:13:25,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653206521] [2020-10-28 15:13:25,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:13:25,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 15:13:25,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711926976] [2020-10-28 15:13:25,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 15:13:25,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:13:25,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 15:13:25,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 15:13:25,118 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-10-28 15:13:25,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:13:25,196 INFO L93 Difference]: Finished difference Result 55 states and 77 transitions. [2020-10-28 15:13:25,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 15:13:25,198 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-28 15:13:25,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:13:25,206 INFO L225 Difference]: With dead ends: 55 [2020-10-28 15:13:25,207 INFO L226 Difference]: Without dead ends: 24 [2020-10-28 15:13:25,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 15:13:25,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-28 15:13:25,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-28 15:13:25,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-28 15:13:25,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-10-28 15:13:25,257 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2020-10-28 15:13:25,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:13:25,257 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-10-28 15:13:25,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 15:13:25,258 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-10-28 15:13:25,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 15:13:25,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:13:25,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:13:25,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 15:13:25,260 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:13:25,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:13:25,261 INFO L82 PathProgramCache]: Analyzing trace with hash -296540427, now seen corresponding path program 1 times [2020-10-28 15:13:25,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:13:25,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155687561] [2020-10-28 15:13:25,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:13:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:25,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:25,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:25,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 15:13:25,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:25,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 15:13:25,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:25,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:25,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:13:25,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:13:25,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:13:25,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:25,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:13:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:25,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:25,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:25,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:13:25,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:25,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 15:13:25,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:25,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:13:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:13:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:13:25,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:13:25,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:13:25,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155687561] [2020-10-28 15:13:25,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:13:25,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 15:13:25,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461117685] [2020-10-28 15:13:25,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 15:13:25,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:13:25,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 15:13:25,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 15:13:25,554 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 4 states. [2020-10-28 15:13:25,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:13:25,721 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2020-10-28 15:13:25,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 15:13:25,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-28 15:13:25,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:13:25,724 INFO L225 Difference]: With dead ends: 51 [2020-10-28 15:13:25,724 INFO L226 Difference]: Without dead ends: 33 [2020-10-28 15:13:25,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:13:25,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-28 15:13:25,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2020-10-28 15:13:25,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-28 15:13:25,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-10-28 15:13:25,736 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 16 [2020-10-28 15:13:25,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:13:25,737 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-10-28 15:13:25,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 15:13:25,737 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-10-28 15:13:25,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-28 15:13:25,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:13:25,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:13:25,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 15:13:25,738 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:13:25,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:13:25,739 INFO L82 PathProgramCache]: Analyzing trace with hash 934243063, now seen corresponding path program 1 times [2020-10-28 15:13:25,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:13:25,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134390649] [2020-10-28 15:13:25,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:13:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:25,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:25,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:26,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:26,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:26,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 15:13:26,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:13:26,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 632 [2020-10-28 15:13:26,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:26,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:26,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:13:26,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:13:26,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 15:13:26,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:13:26,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:13:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:26,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:26,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:26,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:13:26,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:26,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:13:26,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:26,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:26,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:13:26,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:13:26,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:13:26,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:26,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:13:26,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134390649] [2020-10-28 15:13:26,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:13:26,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 15:13:26,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801910174] [2020-10-28 15:13:26,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 15:13:26,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:13:26,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 15:13:26,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:13:26,512 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 5 states. [2020-10-28 15:13:26,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:13:26,751 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2020-10-28 15:13:26,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 15:13:26,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-28 15:13:26,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:13:26,753 INFO L225 Difference]: With dead ends: 54 [2020-10-28 15:13:26,753 INFO L226 Difference]: Without dead ends: 35 [2020-10-28 15:13:26,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:13:26,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-28 15:13:26,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2020-10-28 15:13:26,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-28 15:13:26,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-28 15:13:26,763 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 18 [2020-10-28 15:13:26,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:13:26,764 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-28 15:13:26,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 15:13:26,764 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-28 15:13:26,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-28 15:13:26,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:13:26,765 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:13:26,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 15:13:26,766 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:13:26,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:13:26,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1693796743, now seen corresponding path program 2 times [2020-10-28 15:13:26,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:13:26,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232718999] [2020-10-28 15:13:26,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:13:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:26,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:26,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:26,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:27,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:27,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:27,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 15:13:27,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 15:13:27,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 779 [2020-10-28 15:13:27,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:27,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:27,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:13:27,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:13:27,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 15:13:27,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:13:27,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:13:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:27,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:27,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:27,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:13:27,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:27,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:13:27,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:27,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:27,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:13:27,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:13:27,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:13:27,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:13:27,732 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:13:27,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232718999] [2020-10-28 15:13:27,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:13:27,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 15:13:27,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964460385] [2020-10-28 15:13:27,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 15:13:27,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:13:27,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 15:13:27,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:13:27,736 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 8 states. [2020-10-28 15:13:28,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:13:28,154 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2020-10-28 15:13:28,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 15:13:28,155 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-28 15:13:28,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:13:28,156 INFO L225 Difference]: With dead ends: 58 [2020-10-28 15:13:28,156 INFO L226 Difference]: Without dead ends: 37 [2020-10-28 15:13:28,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:13:28,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-28 15:13:28,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2020-10-28 15:13:28,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-28 15:13:28,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-28 15:13:28,167 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 20 [2020-10-28 15:13:28,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:13:28,167 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-28 15:13:28,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 15:13:28,167 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-28 15:13:28,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 15:13:28,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:13:28,168 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:13:28,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 15:13:28,169 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:13:28,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:13:28,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1799280261, now seen corresponding path program 3 times [2020-10-28 15:13:28,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:13:28,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681418266] [2020-10-28 15:13:28,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:13:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:28,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:28,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:28,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:28,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:28,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:28,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 15:13:28,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 15:13:28,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 715 [2020-10-28 15:13:28,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:28,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:28,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:13:28,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:13:28,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 15:13:28,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:29,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:13:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:29,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:29,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:29,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:13:29,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:29,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:13:29,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:29,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:13:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:13:29,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:13:29,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:29,082 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:13:29,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681418266] [2020-10-28 15:13:29,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:13:29,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 15:13:29,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169131051] [2020-10-28 15:13:29,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 15:13:29,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:13:29,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 15:13:29,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:13:29,085 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 9 states. [2020-10-28 15:13:29,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:13:29,558 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2020-10-28 15:13:29,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 15:13:29,559 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-28 15:13:29,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:13:29,560 INFO L225 Difference]: With dead ends: 62 [2020-10-28 15:13:29,560 INFO L226 Difference]: Without dead ends: 39 [2020-10-28 15:13:29,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-28 15:13:29,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-28 15:13:29,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2020-10-28 15:13:29,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-28 15:13:29,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-28 15:13:29,569 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 22 [2020-10-28 15:13:29,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:13:29,569 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-28 15:13:29,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 15:13:29,570 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-28 15:13:29,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 15:13:29,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:13:29,571 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:13:29,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 15:13:29,571 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:13:29,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:13:29,572 INFO L82 PathProgramCache]: Analyzing trace with hash -89725955, now seen corresponding path program 4 times [2020-10-28 15:13:29,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:13:29,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941175258] [2020-10-28 15:13:29,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:13:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:29,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:29,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:29,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:30,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:30,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 15:13:30,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:13:30,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 729 [2020-10-28 15:13:30,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:30,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:30,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:13:30,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:13:30,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 15:13:30,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:13:30,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:13:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:30,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:30,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:30,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:13:30,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:30,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:13:30,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:30,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:13:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:13:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:13:30,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:30,450 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:13:30,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941175258] [2020-10-28 15:13:30,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:13:30,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 15:13:30,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930299538] [2020-10-28 15:13:30,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 15:13:30,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:13:30,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 15:13:30,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:13:30,453 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 8 states. [2020-10-28 15:13:30,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:13:30,815 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2020-10-28 15:13:30,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 15:13:30,815 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-28 15:13:30,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:13:30,816 INFO L225 Difference]: With dead ends: 66 [2020-10-28 15:13:30,816 INFO L226 Difference]: Without dead ends: 41 [2020-10-28 15:13:30,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-28 15:13:30,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-28 15:13:30,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2020-10-28 15:13:30,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-28 15:13:30,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-28 15:13:30,826 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 24 [2020-10-28 15:13:30,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:13:30,827 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-28 15:13:30,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 15:13:30,827 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-28 15:13:30,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 15:13:30,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:13:30,828 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:13:30,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 15:13:30,828 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:13:30,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:13:30,829 INFO L82 PathProgramCache]: Analyzing trace with hash 2114455039, now seen corresponding path program 5 times [2020-10-28 15:13:30,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:13:30,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543624621] [2020-10-28 15:13:30,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:13:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:30,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:30,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:30,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:31,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:31,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:31,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 15:13:31,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 15:13:31,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1137 [2020-10-28 15:13:31,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:31,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:31,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 15:13:31,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:13:31,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 15:13:31,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:13:32,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:13:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:32,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:32,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:32,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:13:32,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:32,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 15:13:32,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:32,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:32,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:13:32,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:13:32,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:13:32,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:32,192 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:13:32,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543624621] [2020-10-28 15:13:32,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:13:32,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 15:13:32,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642786764] [2020-10-28 15:13:32,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 15:13:32,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:13:32,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 15:13:32,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:13:32,195 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 11 states. [2020-10-28 15:13:32,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:13:32,685 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2020-10-28 15:13:32,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 15:13:32,685 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-10-28 15:13:32,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:13:32,686 INFO L225 Difference]: With dead ends: 70 [2020-10-28 15:13:32,686 INFO L226 Difference]: Without dead ends: 43 [2020-10-28 15:13:32,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-10-28 15:13:32,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-28 15:13:32,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2020-10-28 15:13:32,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-28 15:13:32,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-28 15:13:32,696 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 26 [2020-10-28 15:13:32,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:13:32,696 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-28 15:13:32,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 15:13:32,697 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-28 15:13:32,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 15:13:32,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:13:32,698 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:13:32,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 15:13:32,698 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:13:32,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:13:32,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1381453951, now seen corresponding path program 6 times [2020-10-28 15:13:32,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:13:32,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411496224] [2020-10-28 15:13:32,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:13:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:32,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:32,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:32,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:33,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:33,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:33,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 15:13:33,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 15:13:33,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1273 [2020-10-28 15:13:33,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:33,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:33,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 15:13:33,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:13:33,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 15:13:33,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:34,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:13:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:34,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:34,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:34,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:13:34,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:34,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 15:13:34,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:34,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:34,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:13:34,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:13:34,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:13:34,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 15:13:34,228 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:13:34,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411496224] [2020-10-28 15:13:34,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:13:34,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 15:13:34,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681497315] [2020-10-28 15:13:34,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 15:13:34,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:13:34,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 15:13:34,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:13:34,242 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 10 states. [2020-10-28 15:13:34,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:13:34,809 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2020-10-28 15:13:34,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 15:13:34,810 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-28 15:13:34,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:13:34,811 INFO L225 Difference]: With dead ends: 74 [2020-10-28 15:13:34,811 INFO L226 Difference]: Without dead ends: 45 [2020-10-28 15:13:34,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-28 15:13:34,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-28 15:13:34,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2020-10-28 15:13:34,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-28 15:13:34,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-28 15:13:34,826 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 28 [2020-10-28 15:13:34,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:13:34,827 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-28 15:13:34,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 15:13:34,827 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-28 15:13:34,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 15:13:34,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:13:34,833 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:13:34,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 15:13:34,834 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:13:34,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:13:34,834 INFO L82 PathProgramCache]: Analyzing trace with hash 2009399427, now seen corresponding path program 7 times [2020-10-28 15:13:34,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:13:34,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454181539] [2020-10-28 15:13:34,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:13:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:34,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:34,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:35,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:35,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:35,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:35,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 15:13:35,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 15:13:35,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1044 [2020-10-28 15:13:35,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:35,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:35,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 15:13:35,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:13:35,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 15:13:35,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:36,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:13:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:36,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:36,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:36,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:13:36,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:36,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:13:36,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:36,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:36,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:13:36,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:13:36,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:13:36,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:36,075 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:13:36,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454181539] [2020-10-28 15:13:36,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:13:36,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 15:13:36,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723955910] [2020-10-28 15:13:36,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 15:13:36,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:13:36,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 15:13:36,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:13:36,084 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 11 states. [2020-10-28 15:13:36,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:13:36,725 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2020-10-28 15:13:36,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 15:13:36,726 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-28 15:13:36,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:13:36,727 INFO L225 Difference]: With dead ends: 78 [2020-10-28 15:13:36,727 INFO L226 Difference]: Without dead ends: 47 [2020-10-28 15:13:36,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-10-28 15:13:36,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-28 15:13:36,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2020-10-28 15:13:36,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-28 15:13:36,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-28 15:13:36,746 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 30 [2020-10-28 15:13:36,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:13:36,746 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-28 15:13:36,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 15:13:36,746 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-28 15:13:36,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 15:13:36,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:13:36,749 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:13:36,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 15:13:36,749 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:13:36,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:13:36,752 INFO L82 PathProgramCache]: Analyzing trace with hash 739318021, now seen corresponding path program 8 times [2020-10-28 15:13:36,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:13:36,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036049847] [2020-10-28 15:13:36,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:13:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:36,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:36,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:36,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:38,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:38,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 15:13:38,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:13:38,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1264 [2020-10-28 15:13:38,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:38,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:38,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:13:38,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 15:13:38,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 15:13:38,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:38,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:13:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:38,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:38,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:38,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:13:38,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:38,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:13:38,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:38,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:38,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:13:38,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:13:38,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:13:38,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:13:38,249 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-28 15:13:38,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036049847] [2020-10-28 15:13:38,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:13:38,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 15:13:38,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605971892] [2020-10-28 15:13:38,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 15:13:38,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:13:38,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 15:13:38,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:13:38,252 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 9 states. [2020-10-28 15:13:43,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:13:43,036 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2020-10-28 15:13:43,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 15:13:43,036 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-28 15:13:43,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:13:43,037 INFO L225 Difference]: With dead ends: 46 [2020-10-28 15:13:43,037 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 15:13:43,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=53, Invalid=156, Unknown=1, NotChecked=0, Total=210 [2020-10-28 15:13:43,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 15:13:43,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 15:13:43,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 15:13:43,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 15:13:43,040 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-10-28 15:13:43,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:13:43,040 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 15:13:43,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 15:13:43,040 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 15:13:43,040 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 15:13:43,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 15:13:43,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 15:13:43,190 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 55 [2020-10-28 15:13:43,585 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 16 [2020-10-28 15:13:45,983 WARN L193 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 43 DAG size of output: 16 [2020-10-28 15:13:46,131 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 16 [2020-10-28 15:13:46,211 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-28 15:13:46,212 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-28 15:13:46,212 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-28 15:13:46,212 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-28 15:13:46,212 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 15:13:46,212 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-28 15:13:46,213 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 15:13:46,213 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 15:13:46,213 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 15:13:46,213 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 15:13:46,214 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 15:13:46,214 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 12 27) no Hoare annotation was computed. [2020-10-28 15:13:46,214 INFO L274 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-10-28 15:13:46,214 INFO L270 CegarLoopResult]: At program point L23-3(line 23) the Hoare annotation is: (or (and (< 0 (+ (div main_~v~0 4294967296) 1)) (<= main_~v~0 0)) (<= (+ (* 4294967296 (div (+ (* main_~v~0 (- 1)) 4294967296) 4294967296)) main_~v~0) 10)) [2020-10-28 15:13:46,215 INFO L270 CegarLoopResult]: At program point L23-4(line 23) the Hoare annotation is: (and (not (= main_~v~0 (* (div main_~v~0 4) 4))) (<= (+ (* 4294967296 (div (+ (* main_~v~0 (- 1)) 4294967296) 4294967296)) main_~v~0) 10)) [2020-10-28 15:13:46,215 INFO L274 CegarLoopResult]: For program point L19-2(lines 19 25) no Hoare annotation was computed. [2020-10-28 15:13:46,215 INFO L270 CegarLoopResult]: At program point L19-3(lines 19 25) the Hoare annotation is: (or (<= (+ (* 4294967296 (div (+ (* main_~v~0 (- 1)) 4294967296) 4294967296)) main_~v~0) 10) (<= main_~v~0 (+ (* 4294967296 (div main_~v~0 4294967296)) 9))) [2020-10-28 15:13:46,215 INFO L274 CegarLoopResult]: For program point L19-4(lines 19 25) no Hoare annotation was computed. [2020-10-28 15:13:46,216 INFO L274 CegarLoopResult]: For program point L24(lines 22 25) no Hoare annotation was computed. [2020-10-28 15:13:46,216 INFO L274 CegarLoopResult]: For program point L20-2(lines 20 25) no Hoare annotation was computed. [2020-10-28 15:13:46,216 INFO L270 CegarLoopResult]: At program point L20-3(lines 20 25) the Hoare annotation is: (or (<= (+ (* 4294967296 (div (+ (* main_~v~0 (- 1)) 4294967296) 4294967296)) main_~v~0) 10) (<= main_~v~0 (+ (* 4294967296 (div main_~v~0 4294967296)) 9))) [2020-10-28 15:13:46,216 INFO L274 CegarLoopResult]: For program point L21-2(lines 21 25) no Hoare annotation was computed. [2020-10-28 15:13:46,217 INFO L270 CegarLoopResult]: At program point L21-3(lines 21 25) the Hoare annotation is: (or (<= (+ (* 4294967296 (div (+ (* main_~v~0 (- 1)) 4294967296) 4294967296)) main_~v~0) 10) (<= main_~v~0 (+ (* 4294967296 (div main_~v~0 4294967296)) 9))) [2020-10-28 15:13:46,217 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 12 27) no Hoare annotation was computed. [2020-10-28 15:13:46,217 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 12 27) the Hoare annotation is: true [2020-10-28 15:13:46,217 INFO L270 CegarLoopResult]: At program point L22-2(lines 22 25) the Hoare annotation is: (or (<= (+ (* 4294967296 (div (+ (* main_~v~0 (- 1)) 4294967296) 4294967296)) main_~v~0) 10) (<= main_~v~0 (+ (* 4294967296 (div main_~v~0 4294967296)) 9))) [2020-10-28 15:13:46,217 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-10-28 15:13:46,217 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2020-10-28 15:13:46,218 INFO L270 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-28 15:13:46,218 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-10-28 15:13:46,218 INFO L274 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-10-28 15:13:46,218 INFO L274 CegarLoopResult]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2020-10-28 15:13:46,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 03:13:46 BoogieIcfgContainer [2020-10-28 15:13:46,243 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 15:13:46,246 INFO L168 Benchmark]: Toolchain (without parser) took 22679.76 ms. Allocated memory was 125.8 MB in the beginning and 338.7 MB in the end (delta: 212.9 MB). Free memory was 101.7 MB in the beginning and 133.5 MB in the end (delta: -31.8 MB). Peak memory consumption was 182.3 MB. Max. memory is 8.0 GB. [2020-10-28 15:13:46,247 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory is still 84.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 15:13:46,248 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.09 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 91.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 15:13:46,251 INFO L168 Benchmark]: Boogie Preprocessor took 71.56 ms. Allocated memory is still 125.8 MB. Free memory was 91.7 MB in the beginning and 90.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 15:13:46,252 INFO L168 Benchmark]: RCFGBuilder took 487.66 ms. Allocated memory is still 125.8 MB. Free memory was 90.0 MB in the beginning and 75.5 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-28 15:13:46,256 INFO L168 Benchmark]: TraceAbstraction took 21812.19 ms. Allocated memory was 125.8 MB in the beginning and 338.7 MB in the end (delta: 212.9 MB). Free memory was 75.2 MB in the beginning and 133.5 MB in the end (delta: -58.3 MB). Peak memory consumption was 156.1 MB. Max. memory is 8.0 GB. [2020-10-28 15:13:46,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory is still 84.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 295.09 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 91.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 71.56 ms. Allocated memory is still 125.8 MB. Free memory was 91.7 MB in the beginning and 90.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 487.66 ms. Allocated memory is still 125.8 MB. Free memory was 90.0 MB in the beginning and 75.5 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21812.19 ms. Allocated memory was 125.8 MB in the beginning and 338.7 MB in the end (delta: 212.9 MB). Free memory was 75.2 MB in the beginning and 133.5 MB in the end (delta: -58.3 MB). Peak memory consumption was 156.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 4294967296 * ((v * -1 + 4294967296) / 4294967296) + v <= 10 || v <= 4294967296 * (v / 4294967296) + 9 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 4294967296 * ((v * -1 + 4294967296) / 4294967296) + v <= 10 || v <= 4294967296 * (v / 4294967296) + 9 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (0 < v / 4294967296 + 1 && v <= 0) || 4294967296 * ((v * -1 + 4294967296) / 4294967296) + v <= 10 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 4294967296 * ((v * -1 + 4294967296) / 4294967296) + v <= 10 || v <= 4294967296 * (v / 4294967296) + 9 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 4294967296 * ((v * -1 + 4294967296) / 4294967296) + v <= 10 || v <= 4294967296 * (v / 4294967296) + 9 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18.5s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 8.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 251 SDtfs, 480 SDslu, 282 SDs, 0 SdLazy, 1331 SolverSat, 108 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 64 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 40 PreInvPairs, 58 NumberOfFragments, 178 HoareAnnotationTreeSize, 40 FomulaSimplifications, 145241 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 13 FomulaSimplificationsInter, 451 FormulaSimplificationTreeSizeReductionInter, 2.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 232 NumberOfCodeBlocks, 232 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 25148 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 62/204 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...