/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=SHALLOWEST --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/s3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:58:29,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:58:29,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:58:30,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:58:30,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:58:30,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:58:30,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:58:30,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:58:30,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:58:30,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:58:30,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:58:30,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:58:30,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:58:30,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:58:30,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:58:30,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:58:30,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:58:30,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:58:30,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:58:30,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:58:30,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:58:30,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:58:30,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:58:30,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:58:30,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:58:30,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:58:30,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:58:30,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:58:30,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:58:30,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:58:30,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:58:30,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:58:30,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:58:30,118 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:58:30,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:58:30,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:58:30,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:58:30,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:58:30,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:58:30,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:58:30,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:58:30,128 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 01:58:30,184 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:58:30,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:58:30,188 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:58:30,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:58:30,189 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:58:30,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:58:30,190 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:58:30,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:58:30,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:58:30,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:58:30,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:58:30,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:58:30,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:58:30,192 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:58:30,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:58:30,193 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:58:30,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:58:30,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:58:30,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:58:30,194 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:58:30,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:58:30,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:58:30,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:58:30,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:58:30,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:58:30,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:58:30,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:58:30,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:58:30,195 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:58:30,196 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:58:30,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:58:30,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:58:30,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:58:30,653 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:58:30,654 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:58:30,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/s3.i [2020-10-27 01:58:30,742 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/526376d60/a9c7895438b34837b5ce3a9b6471efaa/FLAG0ae0915c5 [2020-10-27 01:58:31,446 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:58:31,447 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/s3.i [2020-10-27 01:58:31,479 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/526376d60/a9c7895438b34837b5ce3a9b6471efaa/FLAG0ae0915c5 [2020-10-27 01:58:31,649 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/526376d60/a9c7895438b34837b5ce3a9b6471efaa [2020-10-27 01:58:31,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:58:31,664 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:58:31,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:58:31,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:58:31,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:58:31,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:58:31" (1/1) ... [2020-10-27 01:58:31,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ff0d9aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:58:31, skipping insertion in model container [2020-10-27 01:58:31,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:58:31" (1/1) ... [2020-10-27 01:58:31,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:58:31,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:58:32,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:58:32,602 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:58:32,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:58:32,804 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:58:32,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:58:32 WrapperNode [2020-10-27 01:58:32,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:58:32,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:58:32,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:58:32,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:58:32,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:58:32" (1/1) ... [2020-10-27 01:58:32,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:58:32" (1/1) ... [2020-10-27 01:58:32,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:58:32" (1/1) ... [2020-10-27 01:58:32,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:58:32" (1/1) ... [2020-10-27 01:58:32,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:58:32" (1/1) ... [2020-10-27 01:58:32,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:58:32" (1/1) ... [2020-10-27 01:58:32,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:58:32" (1/1) ... [2020-10-27 01:58:32,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:58:32,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:58:32,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:58:32,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:58:32,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:58:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:58:33,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:58:33,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:58:33,100 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:58:33,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_client_method [2020-10-27 01:58:33,100 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_client_method [2020-10-27 01:58:33,101 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:58:33,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-10-27 01:58:33,101 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-27 01:58:33,102 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-27 01:58:33,102 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-27 01:58:33,103 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:58:33,103 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:58:33,103 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:58:33,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:58:33,104 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 01:58:33,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 01:58:33,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-27 01:58:33,105 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-27 01:58:33,105 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_client_method [2020-10-27 01:58:33,106 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-27 01:58:33,106 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-10-27 01:58:33,106 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_client_method [2020-10-27 01:58:33,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-27 01:58:33,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 01:58:33,107 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:58:33,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 01:58:33,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:58:33,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 01:58:33,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:58:33,107 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 01:58:33,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-27 01:58:33,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:58:33,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:58:33,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:58:33,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-27 01:58:33,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-27 01:58:33,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-27 01:58:33,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-27 01:58:33,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:58:33,687 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 01:58:34,300 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-10-27 01:58:34,301 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-10-27 01:58:34,329 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:58:34,330 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 01:58:34,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:58:34 BoogieIcfgContainer [2020-10-27 01:58:34,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:58:34,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:58:34,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:58:34,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:58:34,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:58:31" (1/3) ... [2020-10-27 01:58:34,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3484e3ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:58:34, skipping insertion in model container [2020-10-27 01:58:34,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:58:32" (2/3) ... [2020-10-27 01:58:34,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3484e3ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:58:34, skipping insertion in model container [2020-10-27 01:58:34,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:58:34" (3/3) ... [2020-10-27 01:58:34,366 INFO L111 eAbstractionObserver]: Analyzing ICFG s3.i [2020-10-27 01:58:34,378 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:58:34,384 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:58:34,397 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:58:34,426 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:58:34,427 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:58:34,427 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:58:34,427 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:58:34,427 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:58:34,427 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:58:34,427 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:58:34,427 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:58:34,449 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-10-27 01:58:34,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 01:58:34,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:58:34,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:58:34,459 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:58:34,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:58:34,466 INFO L82 PathProgramCache]: Analyzing trace with hash 808169309, now seen corresponding path program 1 times [2020-10-27 01:58:34,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:58:34,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158107169] [2020-10-27 01:58:34,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:58:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:58:34,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:35,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:35,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:36,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:58:36,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 01:58:36,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:58:36,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1859 [2020-10-27 01:58:36,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:58:36,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:58:36,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:58:36,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:58:36,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:58:36,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:58:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:58:36,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:36,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:58:36,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:58:36,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:58:36,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:58:36,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:58:36,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:58:36,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:58:36,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:58:36,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:58:36,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:58:36,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158107169] [2020-10-27 01:58:36,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:58:36,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 01:58:36,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263188868] [2020-10-27 01:58:36,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:58:36,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:58:36,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:58:36,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:58:36,841 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 7 states. [2020-10-27 01:58:37,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:58:37,931 INFO L93 Difference]: Finished difference Result 276 states and 450 transitions. [2020-10-27 01:58:37,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:58:37,933 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-10-27 01:58:37,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:58:37,944 INFO L225 Difference]: With dead ends: 276 [2020-10-27 01:58:37,945 INFO L226 Difference]: Without dead ends: 125 [2020-10-27 01:58:37,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:58:37,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-27 01:58:38,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2020-10-27 01:58:38,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-27 01:58:38,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 181 transitions. [2020-10-27 01:58:38,006 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 181 transitions. Word has length 31 [2020-10-27 01:58:38,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:58:38,007 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 181 transitions. [2020-10-27 01:58:38,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:58:38,007 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 181 transitions. [2020-10-27 01:58:38,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 01:58:38,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:58:38,010 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:58:38,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:58:38,010 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:58:38,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:58:38,011 INFO L82 PathProgramCache]: Analyzing trace with hash 806063555, now seen corresponding path program 1 times [2020-10-27 01:58:38,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:58:38,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698182448] [2020-10-27 01:58:38,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:58:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:58:38,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:38,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:38,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:39,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:42,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:58:42,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 01:58:42,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:58:42,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4014 [2020-10-27 01:58:42,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:58:42,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:58:42,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:58:42,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 01:58:42,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:58:42,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:58:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:58:42,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:42,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:58:42,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:58:42,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:58:42,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:58:42,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:58:42,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:58:42,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:58:42,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:58:42,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:58:42,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:58:42,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698182448] [2020-10-27 01:58:42,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:58:42,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 01:58:42,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117605762] [2020-10-27 01:58:42,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 01:58:42,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:58:42,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 01:58:42,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:58:42,463 INFO L87 Difference]: Start difference. First operand 124 states and 181 transitions. Second operand 9 states. [2020-10-27 01:58:44,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:58:44,571 INFO L93 Difference]: Finished difference Result 361 states and 536 transitions. [2020-10-27 01:58:44,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 01:58:44,578 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-10-27 01:58:44,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:58:44,582 INFO L225 Difference]: With dead ends: 361 [2020-10-27 01:58:44,582 INFO L226 Difference]: Without dead ends: 253 [2020-10-27 01:58:44,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-27 01:58:44,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-27 01:58:44,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 232. [2020-10-27 01:58:44,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-27 01:58:44,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 350 transitions. [2020-10-27 01:58:44,638 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 350 transitions. Word has length 46 [2020-10-27 01:58:44,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:58:44,642 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 350 transitions. [2020-10-27 01:58:44,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 01:58:44,642 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 350 transitions. [2020-10-27 01:58:44,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 01:58:44,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:58:44,647 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:58:44,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:58:44,648 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:58:44,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:58:44,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1223583938, now seen corresponding path program 1 times [2020-10-27 01:58:44,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:58:44,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545694364] [2020-10-27 01:58:44,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:58:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:58:44,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:45,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:45,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:46,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:58:46,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 01:58:46,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:58:46,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1366 [2020-10-27 01:58:46,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:58:46,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:58:46,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 01:58:46,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 01:58:46,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:58:46,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:58:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:58:46,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:46,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:58:46,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:58:46,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:58:46,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:58:46,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:58:46,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:58:46,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:58:46,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:58:46,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:58:46,202 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:58:46,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545694364] [2020-10-27 01:58:46,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:58:46,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:58:46,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559744786] [2020-10-27 01:58:46,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:58:46,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:58:46,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:58:46,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:58:46,205 INFO L87 Difference]: Start difference. First operand 232 states and 350 transitions. Second operand 4 states. [2020-10-27 01:58:46,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:58:46,780 INFO L93 Difference]: Finished difference Result 661 states and 1008 transitions. [2020-10-27 01:58:46,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 01:58:46,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-27 01:58:46,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:58:46,788 INFO L225 Difference]: With dead ends: 661 [2020-10-27 01:58:46,788 INFO L226 Difference]: Without dead ends: 445 [2020-10-27 01:58:46,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:58:46,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-10-27 01:58:46,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2020-10-27 01:58:46,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-10-27 01:58:46,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 670 transitions. [2020-10-27 01:58:46,866 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 670 transitions. Word has length 61 [2020-10-27 01:58:46,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:58:46,867 INFO L481 AbstractCegarLoop]: Abstraction has 445 states and 670 transitions. [2020-10-27 01:58:46,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:58:46,867 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 670 transitions. [2020-10-27 01:58:46,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 01:58:46,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:58:46,877 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:58:46,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:58:46,878 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:58:46,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:58:46,878 INFO L82 PathProgramCache]: Analyzing trace with hash -267262490, now seen corresponding path program 1 times [2020-10-27 01:58:46,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:58:46,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631989991] [2020-10-27 01:58:46,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:58:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:58:46,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:47,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:48,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:58:48,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 01:58:48,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:58:48,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1572 [2020-10-27 01:58:48,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:58:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:58:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 01:58:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:58:48,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:58:48,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:58:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:58:48,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:48,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:58:48,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:58:48,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:58:48,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:58:48,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:58:48,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:58:48,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:58:48,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:58:48,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:58:48,676 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-27 01:58:48,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631989991] [2020-10-27 01:58:48,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:58:48,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:58:48,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185301102] [2020-10-27 01:58:48,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:58:48,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:58:48,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:58:48,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:58:48,680 INFO L87 Difference]: Start difference. First operand 445 states and 670 transitions. Second operand 4 states. [2020-10-27 01:58:49,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:58:49,236 INFO L93 Difference]: Finished difference Result 1087 states and 1648 transitions. [2020-10-27 01:58:49,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 01:58:49,237 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-27 01:58:49,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:58:49,242 INFO L225 Difference]: With dead ends: 1087 [2020-10-27 01:58:49,242 INFO L226 Difference]: Without dead ends: 658 [2020-10-27 01:58:49,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:58:49,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-27 01:58:49,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-10-27 01:58:49,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-10-27 01:58:49,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 992 transitions. [2020-10-27 01:58:49,278 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 992 transitions. Word has length 79 [2020-10-27 01:58:49,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:58:49,278 INFO L481 AbstractCegarLoop]: Abstraction has 658 states and 992 transitions. [2020-10-27 01:58:49,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:58:49,279 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 992 transitions. [2020-10-27 01:58:49,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 01:58:49,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:58:49,282 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:58:49,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:58:49,282 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:58:49,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:58:49,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1658297626, now seen corresponding path program 1 times [2020-10-27 01:58:49,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:58:49,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726951980] [2020-10-27 01:58:49,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:58:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:58:49,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:49,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:50,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:51,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:54,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:58:54,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 01:58:54,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:58:54,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-27 01:58:54,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:58:54,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:58:54,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-27 01:58:54,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:58:54,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:58:54,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:58:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:58:54,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:54,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:58:54,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:58:54,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:58:54,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 01:58:54,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:58:54,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:58:54,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:58:54,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:58:54,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:58:54,571 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-27 01:58:54,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726951980] [2020-10-27 01:58:54,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:58:54,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:58:54,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818799428] [2020-10-27 01:58:54,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:58:54,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:58:54,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:58:54,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:58:54,576 INFO L87 Difference]: Start difference. First operand 658 states and 992 transitions. Second operand 5 states. [2020-10-27 01:58:55,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:58:55,808 INFO L93 Difference]: Finished difference Result 1841 states and 2791 transitions. [2020-10-27 01:58:55,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:58:55,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-27 01:58:55,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:58:55,821 INFO L225 Difference]: With dead ends: 1841 [2020-10-27 01:58:55,821 INFO L226 Difference]: Without dead ends: 1199 [2020-10-27 01:58:55,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:58:55,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-10-27 01:58:55,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 784. [2020-10-27 01:58:55,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-10-27 01:58:55,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1202 transitions. [2020-10-27 01:58:55,864 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1202 transitions. Word has length 99 [2020-10-27 01:58:55,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:58:55,865 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1202 transitions. [2020-10-27 01:58:55,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:58:55,865 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1202 transitions. [2020-10-27 01:58:55,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 01:58:55,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:58:55,867 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:58:55,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 01:58:55,868 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:58:55,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:58:55,868 INFO L82 PathProgramCache]: Analyzing trace with hash -764811288, now seen corresponding path program 1 times [2020-10-27 01:58:55,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:58:55,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018811266] [2020-10-27 01:58:55,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:58:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:58:55,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:56,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:56,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:58,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:58:58,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 01:58:58,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:58:58,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2550 [2020-10-27 01:58:58,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:58:58,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:58:58,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 01:58:58,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 01:58:58,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:58:58,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:58:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:58:58,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:58,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:58:58,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:58:58,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:58:58,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:58:58,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:58:58,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:58:58,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:58:58,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:58:58,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:58:58,580 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-27 01:58:58,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018811266] [2020-10-27 01:58:58,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:58:58,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:58:58,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830553274] [2020-10-27 01:58:58,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:58:58,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:58:58,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:58:58,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:58:58,586 INFO L87 Difference]: Start difference. First operand 784 states and 1202 transitions. Second operand 4 states. [2020-10-27 01:58:59,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:58:59,128 INFO L93 Difference]: Finished difference Result 1042 states and 1602 transitions. [2020-10-27 01:58:59,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 01:58:59,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-27 01:58:59,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:58:59,135 INFO L225 Difference]: With dead ends: 1042 [2020-10-27 01:58:59,135 INFO L226 Difference]: Without dead ends: 1039 [2020-10-27 01:58:59,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:58:59,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-27 01:58:59,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1039. [2020-10-27 01:58:59,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-10-27 01:58:59,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1596 transitions. [2020-10-27 01:58:59,180 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1596 transitions. Word has length 99 [2020-10-27 01:58:59,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:58:59,181 INFO L481 AbstractCegarLoop]: Abstraction has 1039 states and 1596 transitions. [2020-10-27 01:58:59,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:58:59,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1596 transitions. [2020-10-27 01:58:59,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 01:58:59,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:58:59,184 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:58:59,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 01:58:59,185 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:58:59,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:58:59,185 INFO L82 PathProgramCache]: Analyzing trace with hash 223332808, now seen corresponding path program 1 times [2020-10-27 01:58:59,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:58:59,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183388242] [2020-10-27 01:58:59,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:58:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:58:59,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:59,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:58:59,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 01:58:59,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:58:59,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-10-27 01:58:59,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:58:59,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:58:59,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-27 01:58:59,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 01:58:59,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:58:59,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:58:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:58:59,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:58:59,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:58:59,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:58:59,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:58:59,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:58:59,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:58:59,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:58:59,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:58:59,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:58:59,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:58:59,818 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-27 01:58:59,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183388242] [2020-10-27 01:58:59,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:58:59,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:58:59,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114347565] [2020-10-27 01:58:59,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:58:59,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:58:59,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:58:59,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:58:59,821 INFO L87 Difference]: Start difference. First operand 1039 states and 1596 transitions. Second operand 4 states. [2020-10-27 01:59:00,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:59:00,342 INFO L93 Difference]: Finished difference Result 1042 states and 1598 transitions. [2020-10-27 01:59:00,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 01:59:00,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-10-27 01:59:00,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:59:00,349 INFO L225 Difference]: With dead ends: 1042 [2020-10-27 01:59:00,350 INFO L226 Difference]: Without dead ends: 1039 [2020-10-27 01:59:00,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:59:00,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-27 01:59:00,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1039. [2020-10-27 01:59:00,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-10-27 01:59:00,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1594 transitions. [2020-10-27 01:59:00,400 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1594 transitions. Word has length 120 [2020-10-27 01:59:00,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:59:00,400 INFO L481 AbstractCegarLoop]: Abstraction has 1039 states and 1594 transitions. [2020-10-27 01:59:00,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:59:00,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1594 transitions. [2020-10-27 01:59:00,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 01:59:00,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:59:00,407 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:59:00,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 01:59:00,407 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:59:00,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:59:00,408 INFO L82 PathProgramCache]: Analyzing trace with hash -208847475, now seen corresponding path program 1 times [2020-10-27 01:59:00,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:59:00,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698125154] [2020-10-27 01:59:00,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:59:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:00,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:00,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:02,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:02,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 01:59:02,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:59:02,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1808 [2020-10-27 01:59:02,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:02,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:59:02,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 01:59:02,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 01:59:02,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:02,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:59:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:02,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:02,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:02,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:02,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:02,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:59:02,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:59:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:59:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:59:02,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:02,431 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-27 01:59:02,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698125154] [2020-10-27 01:59:02,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:59:02,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:59:02,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422415880] [2020-10-27 01:59:02,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:59:02,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:59:02,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:59:02,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:59:02,435 INFO L87 Difference]: Start difference. First operand 1039 states and 1594 transitions. Second operand 5 states. [2020-10-27 01:59:03,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:59:03,828 INFO L93 Difference]: Finished difference Result 2775 states and 4261 transitions. [2020-10-27 01:59:03,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:59:03,828 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-27 01:59:03,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:59:03,840 INFO L225 Difference]: With dead ends: 2775 [2020-10-27 01:59:03,840 INFO L226 Difference]: Without dead ends: 1752 [2020-10-27 01:59:03,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:59:03,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2020-10-27 01:59:03,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1247. [2020-10-27 01:59:03,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2020-10-27 01:59:03,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1962 transitions. [2020-10-27 01:59:03,917 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1962 transitions. Word has length 122 [2020-10-27 01:59:03,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:59:03,918 INFO L481 AbstractCegarLoop]: Abstraction has 1247 states and 1962 transitions. [2020-10-27 01:59:03,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:59:03,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1962 transitions. [2020-10-27 01:59:03,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 01:59:03,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:59:03,923 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:59:03,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 01:59:03,924 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:59:03,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:59:03,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1976850323, now seen corresponding path program 1 times [2020-10-27 01:59:03,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:59:03,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352489068] [2020-10-27 01:59:03,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:59:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:04,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:04,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:05,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:05,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 01:59:05,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:59:05,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1083 [2020-10-27 01:59:05,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:05,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:59:05,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 01:59:05,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 01:59:05,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:05,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:59:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:05,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:05,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:05,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:05,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:05,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:59:05,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:05,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:59:05,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:59:05,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:59:05,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:05,227 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-27 01:59:05,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352489068] [2020-10-27 01:59:05,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:59:05,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:59:05,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142860659] [2020-10-27 01:59:05,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:59:05,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:59:05,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:59:05,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:59:05,230 INFO L87 Difference]: Start difference. First operand 1247 states and 1962 transitions. Second operand 5 states. [2020-10-27 01:59:06,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:59:06,160 INFO L93 Difference]: Finished difference Result 2686 states and 4162 transitions. [2020-10-27 01:59:06,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:59:06,161 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-27 01:59:06,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:59:06,171 INFO L225 Difference]: With dead ends: 2686 [2020-10-27 01:59:06,171 INFO L226 Difference]: Without dead ends: 1455 [2020-10-27 01:59:06,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:59:06,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2020-10-27 01:59:06,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1231. [2020-10-27 01:59:06,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2020-10-27 01:59:06,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1930 transitions. [2020-10-27 01:59:06,233 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1930 transitions. Word has length 123 [2020-10-27 01:59:06,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:59:06,234 INFO L481 AbstractCegarLoop]: Abstraction has 1231 states and 1930 transitions. [2020-10-27 01:59:06,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:59:06,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1930 transitions. [2020-10-27 01:59:06,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-27 01:59:06,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:59:06,238 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:59:06,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 01:59:06,238 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:59:06,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:59:06,239 INFO L82 PathProgramCache]: Analyzing trace with hash -255311140, now seen corresponding path program 1 times [2020-10-27 01:59:06,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:59:06,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084170303] [2020-10-27 01:59:06,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:59:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:06,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:06,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:07,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:09,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:09,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 01:59:09,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:59:09,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3260 [2020-10-27 01:59:09,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:09,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:59:09,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 01:59:09,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:59:09,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:09,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:59:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:09,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:09,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:09,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:09,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:09,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:59:09,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:09,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:59:09,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:59:09,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:59:09,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:09,701 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-27 01:59:09,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084170303] [2020-10-27 01:59:09,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:59:09,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:59:09,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167804111] [2020-10-27 01:59:09,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:59:09,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:59:09,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:59:09,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:59:09,704 INFO L87 Difference]: Start difference. First operand 1231 states and 1930 transitions. Second operand 5 states. [2020-10-27 01:59:10,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:59:10,706 INFO L93 Difference]: Finished difference Result 2670 states and 4122 transitions. [2020-10-27 01:59:10,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:59:10,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-27 01:59:10,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:59:10,716 INFO L225 Difference]: With dead ends: 2670 [2020-10-27 01:59:10,716 INFO L226 Difference]: Without dead ends: 1455 [2020-10-27 01:59:10,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:59:10,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2020-10-27 01:59:10,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1231. [2020-10-27 01:59:10,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2020-10-27 01:59:10,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1922 transitions. [2020-10-27 01:59:10,794 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1922 transitions. Word has length 137 [2020-10-27 01:59:10,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:59:10,794 INFO L481 AbstractCegarLoop]: Abstraction has 1231 states and 1922 transitions. [2020-10-27 01:59:10,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:59:10,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1922 transitions. [2020-10-27 01:59:10,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-27 01:59:10,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:59:10,799 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:59:10,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 01:59:10,800 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:59:10,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:59:10,800 INFO L82 PathProgramCache]: Analyzing trace with hash -848780490, now seen corresponding path program 1 times [2020-10-27 01:59:10,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:59:10,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630245512] [2020-10-27 01:59:10,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:59:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:10,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:10,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:12,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:13,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:13,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 01:59:13,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:59:13,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2855 [2020-10-27 01:59:13,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:13,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:59:13,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 01:59:13,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 01:59:13,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:59:13,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:59:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:13,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:13,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:13,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:13,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:13,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:59:13,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:13,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:59:13,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:59:13,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:59:13,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-27 01:59:13,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630245512] [2020-10-27 01:59:13,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:59:13,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:59:13,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480442737] [2020-10-27 01:59:13,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:59:13,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:59:13,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:59:13,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:59:13,853 INFO L87 Difference]: Start difference. First operand 1231 states and 1922 transitions. Second operand 5 states. [2020-10-27 01:59:14,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:59:14,745 INFO L93 Difference]: Finished difference Result 2646 states and 4074 transitions. [2020-10-27 01:59:14,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:59:14,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-27 01:59:14,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:59:14,754 INFO L225 Difference]: With dead ends: 2646 [2020-10-27 01:59:14,755 INFO L226 Difference]: Without dead ends: 1431 [2020-10-27 01:59:14,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:59:14,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2020-10-27 01:59:14,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1231. [2020-10-27 01:59:14,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2020-10-27 01:59:14,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1914 transitions. [2020-10-27 01:59:14,819 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1914 transitions. Word has length 138 [2020-10-27 01:59:14,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:59:14,820 INFO L481 AbstractCegarLoop]: Abstraction has 1231 states and 1914 transitions. [2020-10-27 01:59:14,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:59:14,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1914 transitions. [2020-10-27 01:59:14,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 01:59:14,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:59:14,824 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:59:14,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 01:59:14,825 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:59:14,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:59:14,825 INFO L82 PathProgramCache]: Analyzing trace with hash -159507273, now seen corresponding path program 1 times [2020-10-27 01:59:14,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:59:14,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064191925] [2020-10-27 01:59:14,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:59:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:14,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:15,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:16,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:19,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:19,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 01:59:19,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:59:19,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-27 01:59:19,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:19,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:59:19,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-27 01:59:19,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 01:59:19,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:20,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:59:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:20,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:20,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:20,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:20,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:20,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:59:20,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:20,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:59:20,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:59:20,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:59:20,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:20,237 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 157 proven. 27 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-27 01:59:20,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064191925] [2020-10-27 01:59:20,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:59:20,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 01:59:20,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909638938] [2020-10-27 01:59:20,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:59:20,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:59:20,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:59:20,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:59:20,239 INFO L87 Difference]: Start difference. First operand 1231 states and 1914 transitions. Second operand 7 states. [2020-10-27 01:59:22,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:59:22,085 INFO L93 Difference]: Finished difference Result 3399 states and 5277 transitions. [2020-10-27 01:59:22,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 01:59:22,085 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-10-27 01:59:22,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:59:22,098 INFO L225 Difference]: With dead ends: 3399 [2020-10-27 01:59:22,098 INFO L226 Difference]: Without dead ends: 2184 [2020-10-27 01:59:22,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:59:22,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2020-10-27 01:59:22,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 2079. [2020-10-27 01:59:22,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2079 states. [2020-10-27 01:59:22,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2079 states to 2079 states and 3254 transitions. [2020-10-27 01:59:22,197 INFO L78 Accepts]: Start accepts. Automaton has 2079 states and 3254 transitions. Word has length 140 [2020-10-27 01:59:22,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:59:22,198 INFO L481 AbstractCegarLoop]: Abstraction has 2079 states and 3254 transitions. [2020-10-27 01:59:22,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:59:22,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2079 states and 3254 transitions. [2020-10-27 01:59:22,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 01:59:22,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:59:22,204 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:59:22,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 01:59:22,204 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:59:22,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:59:22,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1763720761, now seen corresponding path program 1 times [2020-10-27 01:59:22,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:59:22,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467248232] [2020-10-27 01:59:22,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:59:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:22,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:22,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:23,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:25,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:25,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 01:59:25,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:59:25,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3240 [2020-10-27 01:59:25,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:25,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:59:25,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 01:59:25,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:59:25,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:25,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:59:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:25,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:25,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:25,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:25,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:25,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:59:25,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:59:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:59:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:59:25,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-27 01:59:25,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467248232] [2020-10-27 01:59:25,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:59:25,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:59:25,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207470617] [2020-10-27 01:59:25,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:59:25,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:59:25,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:59:25,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:59:25,606 INFO L87 Difference]: Start difference. First operand 2079 states and 3254 transitions. Second operand 5 states. [2020-10-27 01:59:26,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:59:26,497 INFO L93 Difference]: Finished difference Result 4462 states and 6884 transitions. [2020-10-27 01:59:26,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:59:26,498 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-27 01:59:26,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:59:26,511 INFO L225 Difference]: With dead ends: 4462 [2020-10-27 01:59:26,511 INFO L226 Difference]: Without dead ends: 2399 [2020-10-27 01:59:26,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:59:26,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2020-10-27 01:59:26,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 2079. [2020-10-27 01:59:26,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2079 states. [2020-10-27 01:59:26,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2079 states to 2079 states and 3238 transitions. [2020-10-27 01:59:26,608 INFO L78 Accepts]: Start accepts. Automaton has 2079 states and 3238 transitions. Word has length 140 [2020-10-27 01:59:26,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:59:26,608 INFO L481 AbstractCegarLoop]: Abstraction has 2079 states and 3238 transitions. [2020-10-27 01:59:26,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:59:26,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2079 states and 3238 transitions. [2020-10-27 01:59:26,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 01:59:26,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:59:26,617 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:59:26,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 01:59:26,618 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:59:26,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:59:26,618 INFO L82 PathProgramCache]: Analyzing trace with hash -397941437, now seen corresponding path program 1 times [2020-10-27 01:59:26,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:59:26,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102186619] [2020-10-27 01:59:26,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:59:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:26,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:27,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:27,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:29,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:29,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 01:59:29,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:59:29,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2494 [2020-10-27 01:59:29,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:29,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:59:29,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 01:59:29,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:59:29,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:29,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:59:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:29,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:29,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:29,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:29,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:29,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:59:29,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:59:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:59:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:59:29,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:29,279 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-27 01:59:29,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102186619] [2020-10-27 01:59:29,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:59:29,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:59:29,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067311870] [2020-10-27 01:59:29,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:59:29,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:59:29,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:59:29,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:59:29,282 INFO L87 Difference]: Start difference. First operand 2079 states and 3238 transitions. Second operand 5 states. [2020-10-27 01:59:30,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:59:30,229 INFO L93 Difference]: Finished difference Result 4462 states and 6852 transitions. [2020-10-27 01:59:30,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:59:30,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-27 01:59:30,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:59:30,243 INFO L225 Difference]: With dead ends: 4462 [2020-10-27 01:59:30,243 INFO L226 Difference]: Without dead ends: 2399 [2020-10-27 01:59:30,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:59:30,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2020-10-27 01:59:30,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 2079. [2020-10-27 01:59:30,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2079 states. [2020-10-27 01:59:30,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2079 states to 2079 states and 3222 transitions. [2020-10-27 01:59:30,337 INFO L78 Accepts]: Start accepts. Automaton has 2079 states and 3222 transitions. Word has length 140 [2020-10-27 01:59:30,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:59:30,337 INFO L481 AbstractCegarLoop]: Abstraction has 2079 states and 3222 transitions. [2020-10-27 01:59:30,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:59:30,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2079 states and 3222 transitions. [2020-10-27 01:59:30,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-27 01:59:30,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:59:30,343 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:59:30,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 01:59:30,344 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:59:30,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:59:30,344 INFO L82 PathProgramCache]: Analyzing trace with hash 97120319, now seen corresponding path program 1 times [2020-10-27 01:59:30,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:59:30,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190314222] [2020-10-27 01:59:30,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:59:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:30,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:30,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:31,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:33,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:33,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 01:59:33,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:59:33,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2706 [2020-10-27 01:59:33,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:33,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:59:33,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 01:59:33,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:59:33,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:33,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:59:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:33,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:33,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:33,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:33,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:33,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:59:33,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:33,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:59:33,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:59:33,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:59:33,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:33,219 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-27 01:59:33,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190314222] [2020-10-27 01:59:33,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:59:33,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:59:33,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342413521] [2020-10-27 01:59:33,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:59:33,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:59:33,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:59:33,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:59:33,222 INFO L87 Difference]: Start difference. First operand 2079 states and 3222 transitions. Second operand 5 states. [2020-10-27 01:59:34,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:59:34,105 INFO L93 Difference]: Finished difference Result 4398 states and 6732 transitions. [2020-10-27 01:59:34,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:59:34,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-27 01:59:34,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:59:34,119 INFO L225 Difference]: With dead ends: 4398 [2020-10-27 01:59:34,119 INFO L226 Difference]: Without dead ends: 2335 [2020-10-27 01:59:34,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:59:34,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2020-10-27 01:59:34,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 2079. [2020-10-27 01:59:34,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2079 states. [2020-10-27 01:59:34,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2079 states to 2079 states and 3206 transitions. [2020-10-27 01:59:34,202 INFO L78 Accepts]: Start accepts. Automaton has 2079 states and 3206 transitions. Word has length 141 [2020-10-27 01:59:34,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:59:34,202 INFO L481 AbstractCegarLoop]: Abstraction has 2079 states and 3206 transitions. [2020-10-27 01:59:34,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:59:34,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2079 states and 3206 transitions. [2020-10-27 01:59:34,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-27 01:59:34,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:59:34,208 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:59:34,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 01:59:34,208 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:59:34,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:59:34,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1457547241, now seen corresponding path program 1 times [2020-10-27 01:59:34,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:59:34,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726520624] [2020-10-27 01:59:34,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:59:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:34,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:34,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:34,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:35,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:35,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 01:59:35,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:59:35,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1571 [2020-10-27 01:59:35,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:35,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:59:35,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 01:59:35,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 01:59:35,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:35,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:59:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:35,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:35,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:35,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:35,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:35,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:59:35,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:35,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:59:35,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:59:35,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:59:35,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:35,965 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-27 01:59:35,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726520624] [2020-10-27 01:59:35,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:59:35,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:59:35,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619257078] [2020-10-27 01:59:35,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:59:35,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:59:35,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:59:35,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:59:35,967 INFO L87 Difference]: Start difference. First operand 2079 states and 3206 transitions. Second operand 5 states. [2020-10-27 01:59:36,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:59:36,790 INFO L93 Difference]: Finished difference Result 4318 states and 6592 transitions. [2020-10-27 01:59:36,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:59:36,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-27 01:59:36,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:59:36,804 INFO L225 Difference]: With dead ends: 4318 [2020-10-27 01:59:36,804 INFO L226 Difference]: Without dead ends: 2255 [2020-10-27 01:59:36,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:59:36,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2020-10-27 01:59:36,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 2079. [2020-10-27 01:59:36,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2079 states. [2020-10-27 01:59:36,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2079 states to 2079 states and 3190 transitions. [2020-10-27 01:59:36,883 INFO L78 Accepts]: Start accepts. Automaton has 2079 states and 3190 transitions. Word has length 141 [2020-10-27 01:59:36,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:59:36,884 INFO L481 AbstractCegarLoop]: Abstraction has 2079 states and 3190 transitions. [2020-10-27 01:59:36,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:59:36,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2079 states and 3190 transitions. [2020-10-27 01:59:36,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 01:59:36,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:59:36,890 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:59:36,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 01:59:36,890 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:59:36,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:59:36,891 INFO L82 PathProgramCache]: Analyzing trace with hash -775367759, now seen corresponding path program 1 times [2020-10-27 01:59:36,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:59:36,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767955341] [2020-10-27 01:59:36,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:59:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:59:36,967 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:59:36,968 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:59:36,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 01:59:37,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:59:37 BoogieIcfgContainer [2020-10-27 01:59:37,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:59:37,017 INFO L168 Benchmark]: Toolchain (without parser) took 65358.31 ms. Allocated memory was 154.1 MB in the beginning and 1.1 GB in the end (delta: 961.5 MB). Free memory was 107.7 MB in the beginning and 873.9 MB in the end (delta: -766.2 MB). Peak memory consumption was 196.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:59:37,018 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 154.1 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:59:37,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1136.38 ms. Allocated memory is still 154.1 MB. Free memory was 107.3 MB in the beginning and 120.2 MB in the end (delta: -12.9 MB). Peak memory consumption was 28.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:59:37,019 INFO L168 Benchmark]: Boogie Preprocessor took 176.00 ms. Allocated memory is still 154.1 MB. Free memory was 120.2 MB in the beginning and 112.9 MB in the end (delta: 7.4 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. [2020-10-27 01:59:37,019 INFO L168 Benchmark]: RCFGBuilder took 1349.62 ms. Allocated memory was 154.1 MB in the beginning and 191.9 MB in the end (delta: 37.7 MB). Free memory was 112.9 MB in the beginning and 106.8 MB in the end (delta: 6.1 MB). Peak memory consumption was 44.8 MB. Max. memory is 8.0 GB. [2020-10-27 01:59:37,020 INFO L168 Benchmark]: TraceAbstraction took 62658.47 ms. Allocated memory was 191.9 MB in the beginning and 1.1 GB in the end (delta: 923.8 MB). Free memory was 165.2 MB in the beginning and 873.9 MB in the end (delta: -708.8 MB). Peak memory consumption was 214.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:59:37,023 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 154.1 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1136.38 ms. Allocated memory is still 154.1 MB. Free memory was 107.3 MB in the beginning and 120.2 MB in the end (delta: -12.9 MB). Peak memory consumption was 28.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 176.00 ms. Allocated memory is still 154.1 MB. Free memory was 120.2 MB in the beginning and 112.9 MB in the end (delta: 7.4 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1349.62 ms. Allocated memory was 154.1 MB in the beginning and 191.9 MB in the end (delta: 37.7 MB). Free memory was 112.9 MB in the beginning and 106.8 MB in the end (delta: 6.1 MB). Peak memory consumption was 44.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 62658.47 ms. Allocated memory was 191.9 MB in the beginning and 1.1 GB in the end (delta: 923.8 MB). Free memory was 165.2 MB in the beginning and 873.9 MB in the end (delta: -708.8 MB). Peak memory consumption was 214.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 1332. Possible FailurePath: [L1041] static int init = 1; [L1042] static SSL_METHOD SSLv3_client_data ; [L1064] SSL *s ; [L1068] s = malloc (sizeof (SSL)) [L1069] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1070] s->ctx = malloc(sizeof(SSL_CTX)) [L1071] s->state = 12292 [L1072] s->version = __VERIFIER_nondet_int() [L1073] CALL ssl3_connect(s) [L1079] BUF_MEM *buf = (BUF_MEM *)__VERIFIER_nondet_ulong(); [L1080] unsigned long tmp ; [L1081] unsigned long l ; [L1082] long num1 ; [L1083] void (*cb)() ; [L1084] int ret ; [L1085] int new_state ; [L1086] int state ; [L1087] int skip ; [L1088] int *tmp___0 ; [L1089] int tmp___1 = __VERIFIER_nondet_int(); [L1090] int tmp___2 = __VERIFIER_nondet_int(); [L1091] int tmp___3 ; [L1092] int tmp___4 ; [L1093] int tmp___5 ; [L1094] int tmp___6 ; [L1095] int tmp___7 ; [L1096] int tmp___8 ; [L1097] long tmp___9 ; [L1099] int blastFlag ; [L1102] blastFlag = 0 [L1103] s->state = 12292 [L1104] s->hit = __VERIFIER_nondet_int() [L1106] tmp = __VERIFIER_nondet_int() [L1107] cb = (void (*)())((void *)0) [L1108] ret = -1 [L1109] skip = 0 [L1110] tmp___0 = (int*)malloc(sizeof(int)) [L1111] *tmp___0 = 0 [L1112] EXPR s->info_callback [L1112] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1113] EXPR s->info_callback [L1113] cb = s->info_callback [L1121] EXPR s->in_handshake [L1121] s->in_handshake += 1 [L1122] COND FALSE !(tmp___1 & 12288) [L1132] COND TRUE 1 [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state [L1135] COND TRUE s->state == 12292 [L1238] s->new_session = 1 [L1239] s->state = 4096 [L1240] EXPR s->ctx [L1240] EXPR (s->ctx)->stats.sess_connect_renegotiate [L1240] (s->ctx)->stats.sess_connect_renegotiate += 1 [L1245] s->server = 0 [L1246] COND TRUE (unsigned long )cb != (unsigned long )((void *)0) [L1251] EXPR s->version [L1251] COND FALSE !((s->version & 65280) != 768) [L1257] s->type = 4096 [L1258] EXPR s->init_buf [L1258] COND FALSE !((unsigned long )s->init_buf == (unsigned long )((void *)0)) [L1270] tmp___4 = __VERIFIER_nondet_int() [L1271] COND FALSE !(! tmp___4) [L1277] tmp___5 = __VERIFIER_nondet_int() [L1278] COND FALSE !(! tmp___5) [L1284] s->state = 4368 [L1285] EXPR s->ctx [L1285] EXPR (s->ctx)->stats.sess_connect [L1285] (s->ctx)->stats.sess_connect += 1 [L1286] s->init_num = 0 [L1606] EXPR s->s3 [L1606] EXPR (s->s3)->tmp.reuse_message [L1606] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1635] skip = 0 [L1132] COND TRUE 1 [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state [L1135] COND FALSE !(s->state == 12292) [L1138] EXPR s->state [L1138] COND FALSE !(s->state == 16384) [L1141] EXPR s->state [L1141] COND FALSE !(s->state == 4096) [L1144] EXPR s->state [L1144] COND FALSE !(s->state == 20480) [L1147] EXPR s->state [L1147] COND FALSE !(s->state == 4099) [L1150] EXPR s->state [L1150] COND TRUE s->state == 4368 [L1290] s->shutdown = 0 [L1291] ret = __VERIFIER_nondet_int() [L1292] COND TRUE blastFlag == 0 [L1293] blastFlag = 1 [L1297] COND FALSE !(ret <= 0) [L1302] s->state = 4384 [L1303] s->init_num = 0 [L1304] EXPR s->bbio [L1304] EXPR s->wbio [L1304] COND TRUE (unsigned long )s->bbio != (unsigned long )s->wbio [L1606] EXPR s->s3 [L1606] EXPR (s->s3)->tmp.reuse_message [L1606] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1635] skip = 0 [L1132] COND TRUE 1 [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state [L1135] COND FALSE !(s->state == 12292) [L1138] EXPR s->state [L1138] COND FALSE !(s->state == 16384) [L1141] EXPR s->state [L1141] COND FALSE !(s->state == 4096) [L1144] EXPR s->state [L1144] COND FALSE !(s->state == 20480) [L1147] EXPR s->state [L1147] COND FALSE !(s->state == 4099) [L1150] EXPR s->state [L1150] COND FALSE !(s->state == 4368) [L1153] EXPR s->state [L1153] COND FALSE !(s->state == 4369) [L1156] EXPR s->state [L1156] COND TRUE s->state == 4384 [L1312] ret = __VERIFIER_nondet_int() [L1313] COND TRUE blastFlag == 1 [L1314] blastFlag = 2 [L1318] COND FALSE !(ret <= 0) [L1323] s->hit [L1323] COND FALSE !(s->hit) [L1326] s->state = 4400 [L1328] s->init_num = 0 [L1606] EXPR s->s3 [L1606] EXPR (s->s3)->tmp.reuse_message [L1606] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1635] skip = 0 [L1132] COND TRUE 1 [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state [L1135] COND FALSE !(s->state == 12292) [L1138] EXPR s->state [L1138] COND FALSE !(s->state == 16384) [L1141] EXPR s->state [L1141] COND FALSE !(s->state == 4096) [L1144] EXPR s->state [L1144] COND FALSE !(s->state == 20480) [L1147] EXPR s->state [L1147] COND FALSE !(s->state == 4099) [L1150] EXPR s->state [L1150] COND FALSE !(s->state == 4368) [L1153] EXPR s->state [L1153] COND FALSE !(s->state == 4369) [L1156] EXPR s->state [L1156] COND FALSE !(s->state == 4384) [L1159] EXPR s->state [L1159] COND FALSE !(s->state == 4385) [L1162] EXPR s->state [L1162] COND TRUE s->state == 4400 [L1332] EXPR s->s3 [L1332] EXPR (s->s3)->tmp.new_cipher [L1332] EXPR ((s->s3)->tmp.new_cipher)->algorithms [L1332] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1335] ret = __VERIFIER_nondet_int() [L1336] COND TRUE blastFlag == 2 [L1337] blastFlag = 3 [L1341] COND FALSE !(ret <= 0) [L1347] s->state = 4416 [L1348] s->init_num = 0 [L1606] EXPR s->s3 [L1606] EXPR (s->s3)->tmp.reuse_message [L1606] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1635] skip = 0 [L1132] COND TRUE 1 [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state [L1135] COND FALSE !(s->state == 12292) [L1138] EXPR s->state [L1138] COND FALSE !(s->state == 16384) [L1141] EXPR s->state [L1141] COND FALSE !(s->state == 4096) [L1144] EXPR s->state [L1144] COND FALSE !(s->state == 20480) [L1147] EXPR s->state [L1147] COND FALSE !(s->state == 4099) [L1150] EXPR s->state [L1150] COND FALSE !(s->state == 4368) [L1153] EXPR s->state [L1153] COND FALSE !(s->state == 4369) [L1156] EXPR s->state [L1156] COND FALSE !(s->state == 4384) [L1159] EXPR s->state [L1159] COND FALSE !(s->state == 4385) [L1162] EXPR s->state [L1162] COND FALSE !(s->state == 4400) [L1165] EXPR s->state [L1165] COND FALSE !(s->state == 4401) [L1168] EXPR s->state [L1168] COND TRUE s->state == 4416 [L1352] ret = __VERIFIER_nondet_int() [L1353] COND TRUE blastFlag == 3 [L1354] blastFlag = 4 [L1358] COND FALSE !(ret <= 0) [L1363] s->state = 4432 [L1364] s->init_num = 0 [L1365] tmp___6 = __VERIFIER_nondet_int() [L1366] COND FALSE !(! tmp___6) [L1606] EXPR s->s3 [L1606] EXPR (s->s3)->tmp.reuse_message [L1606] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1635] skip = 0 [L1132] COND TRUE 1 [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state [L1135] COND FALSE !(s->state == 12292) [L1138] EXPR s->state [L1138] COND FALSE !(s->state == 16384) [L1141] EXPR s->state [L1141] COND FALSE !(s->state == 4096) [L1144] EXPR s->state [L1144] COND FALSE !(s->state == 20480) [L1147] EXPR s->state [L1147] COND FALSE !(s->state == 4099) [L1150] EXPR s->state [L1150] COND FALSE !(s->state == 4368) [L1153] EXPR s->state [L1153] COND FALSE !(s->state == 4369) [L1156] EXPR s->state [L1156] COND FALSE !(s->state == 4384) [L1159] EXPR s->state [L1159] COND FALSE !(s->state == 4385) [L1162] EXPR s->state [L1162] COND FALSE !(s->state == 4400) [L1165] EXPR s->state [L1165] COND FALSE !(s->state == 4401) [L1168] EXPR s->state [L1168] COND FALSE !(s->state == 4416) [L1171] EXPR s->state [L1171] COND FALSE !(s->state == 4417) [L1174] EXPR s->state [L1174] COND TRUE s->state == 4432 [L1375] ret = __VERIFIER_nondet_int() [L1376] COND FALSE !(blastFlag == 5) [L1381] COND FALSE !(ret <= 0) [L1386] s->state = 4448 [L1387] s->init_num = 0 [L1606] EXPR s->s3 [L1606] EXPR (s->s3)->tmp.reuse_message [L1606] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1635] skip = 0 [L1132] COND TRUE 1 [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state [L1135] COND FALSE !(s->state == 12292) [L1138] EXPR s->state [L1138] COND FALSE !(s->state == 16384) [L1141] EXPR s->state [L1141] COND FALSE !(s->state == 4096) [L1144] EXPR s->state [L1144] COND FALSE !(s->state == 20480) [L1147] EXPR s->state [L1147] COND FALSE !(s->state == 4099) [L1150] EXPR s->state [L1150] COND FALSE !(s->state == 4368) [L1153] EXPR s->state [L1153] COND FALSE !(s->state == 4369) [L1156] EXPR s->state [L1156] COND FALSE !(s->state == 4384) [L1159] EXPR s->state [L1159] COND FALSE !(s->state == 4385) [L1162] EXPR s->state [L1162] COND FALSE !(s->state == 4400) [L1165] EXPR s->state [L1165] COND FALSE !(s->state == 4401) [L1168] EXPR s->state [L1168] COND FALSE !(s->state == 4416) [L1171] EXPR s->state [L1171] COND FALSE !(s->state == 4417) [L1174] EXPR s->state [L1174] COND FALSE !(s->state == 4432) [L1177] EXPR s->state [L1177] COND FALSE !(s->state == 4433) [L1180] EXPR s->state [L1180] COND TRUE s->state == 4448 [L1391] ret = __VERIFIER_nondet_int() [L1392] COND TRUE blastFlag == 4 [L1647] CALL reach_error() [L3] __assert_fail("0", "s3.i", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 172 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 62.5s, OverallIterations: 17, TraceHistogramMax: 7, AutomataDifference: 16.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3217 SDtfs, 1605 SDslu, 4977 SDs, 0 SdLazy, 6624 SolverSat, 195 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2079occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 16 MinimizatonAttempts, 2767 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 43.5s InterpolantComputationTime, 1901 NumberOfCodeBlocks, 1901 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1741 ConstructedInterpolants, 0 QuantifiedInterpolants, 702553 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 14 PerfectInterpolantSequences, 2152/2182 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...