/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:59:29,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:59:29,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:59:29,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:59:29,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:59:29,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:59:29,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:59:29,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:59:29,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:59:29,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:59:29,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:59:29,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:59:29,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:59:29,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:59:29,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:59:29,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:59:29,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:59:29,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:59:29,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:59:30,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:59:30,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:59:30,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:59:30,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:59:30,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:59:30,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:59:30,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:59:30,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:59:30,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:59:30,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:59:30,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:59:30,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:59:30,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:59:30,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:59:30,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:59:30,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:59:30,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:59:30,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:59:30,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:59:30,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:59:30,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:59:30,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:59:30,035 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:59:30,072 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:59:30,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:59:30,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:59:30,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:59:30,075 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:59:30,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:59:30,076 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:59:30,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:59:30,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:59:30,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:59:30,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:59:30,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:59:30,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:59:30,078 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:59:30,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:59:30,079 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:59:30,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:59:30,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:59:30,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:59:30,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:59:30,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:59:30,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:59:30,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:59:30,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:59:30,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:59:30,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:59:30,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:59:30,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:59:30,081 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:59:30,082 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:59:30,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:59:30,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:59:30,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:59:30,561 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:59:30,562 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:59:30,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label04.c [2020-10-28 12:59:30,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8879ddf11/980e326ccc1848c2904879c6bd5fd93d/FLAG3f5c68fe0 [2020-10-28 12:59:31,743 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:59:31,744 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label04.c [2020-10-28 12:59:31,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8879ddf11/980e326ccc1848c2904879c6bd5fd93d/FLAG3f5c68fe0 [2020-10-28 12:59:32,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8879ddf11/980e326ccc1848c2904879c6bd5fd93d [2020-10-28 12:59:32,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:59:32,312 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:59:32,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:59:32,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:59:32,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:59:32,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:59:32" (1/1) ... [2020-10-28 12:59:32,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51874b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:59:32, skipping insertion in model container [2020-10-28 12:59:32,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:59:32" (1/1) ... [2020-10-28 12:59:32,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:59:32,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:59:33,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:59:33,464 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:59:33,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:59:33,923 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:59:33,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:59:33 WrapperNode [2020-10-28 12:59:33,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:59:33,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:59:33,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:59:33,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:59:33,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:59:33" (1/1) ... [2020-10-28 12:59:33,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:59:33" (1/1) ... [2020-10-28 12:59:34,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:59:33" (1/1) ... [2020-10-28 12:59:34,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:59:33" (1/1) ... [2020-10-28 12:59:34,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:59:33" (1/1) ... [2020-10-28 12:59:34,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:59:33" (1/1) ... [2020-10-28 12:59:34,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:59:33" (1/1) ... [2020-10-28 12:59:34,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:59:34,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:59:34,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:59:34,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:59:34,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:59:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:59:34,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:59:34,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:59:34,256 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:59:34,257 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:59:34,257 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:59:34,257 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:59:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:59:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:59:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:59:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:59:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:59:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:59:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:59:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:59:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:59:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:59:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:59:34,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:59:34,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:59:34,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:59:34,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:59:37,937 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:59:37,937 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:59:37,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:59:37 BoogieIcfgContainer [2020-10-28 12:59:37,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:59:37,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:59:37,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:59:37,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:59:37,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:59:32" (1/3) ... [2020-10-28 12:59:37,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1870b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:59:37, skipping insertion in model container [2020-10-28 12:59:37,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:59:33" (2/3) ... [2020-10-28 12:59:37,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1870b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:59:37, skipping insertion in model container [2020-10-28 12:59:37,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:59:37" (3/3) ... [2020-10-28 12:59:37,958 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label04.c [2020-10-28 12:59:37,972 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:59:37,979 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:59:37,993 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:59:38,044 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:59:38,045 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:59:38,045 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:59:38,045 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:59:38,045 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:59:38,045 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:59:38,046 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:59:38,046 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:59:38,074 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-28 12:59:38,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 12:59:38,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:59:38,084 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:59:38,085 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:59:38,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:59:38,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1376146487, now seen corresponding path program 1 times [2020-10-28 12:59:38,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:59:38,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108294336] [2020-10-28 12:59:38,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:59:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:38,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:38,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:38,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 12:59:38,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:38,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-10-28 12:59:38,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:38,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:38,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:59:38,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:59:38,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 12:59:38,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:59:39,064 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 12:59:39,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:59:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:39,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:39,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:39,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:59:39,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:39,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:59:39,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:39,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:39,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:59:39,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:39,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:59:39,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:59:39,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:59:39,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108294336] [2020-10-28 12:59:39,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:59:39,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 12:59:39,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886034177] [2020-10-28 12:59:39,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:59:39,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:59:39,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:59:39,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:59:39,165 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 5 states. [2020-10-28 12:59:39,421 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 12:59:51,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:59:51,155 INFO L93 Difference]: Finished difference Result 1535 states and 2809 transitions. [2020-10-28 12:59:51,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:59:51,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-10-28 12:59:51,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:59:51,193 INFO L225 Difference]: With dead ends: 1535 [2020-10-28 12:59:51,193 INFO L226 Difference]: Without dead ends: 1026 [2020-10-28 12:59:51,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:59:51,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-10-28 12:59:51,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1018. [2020-10-28 12:59:51,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1018 states. [2020-10-28 12:59:51,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1543 transitions. [2020-10-28 12:59:51,370 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1543 transitions. Word has length 38 [2020-10-28 12:59:51,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:59:51,371 INFO L481 AbstractCegarLoop]: Abstraction has 1018 states and 1543 transitions. [2020-10-28 12:59:51,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:59:51,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1543 transitions. [2020-10-28 12:59:51,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-28 12:59:51,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:59:51,386 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:59:51,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:59:51,387 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:59:51,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:59:51,388 INFO L82 PathProgramCache]: Analyzing trace with hash 112133878, now seen corresponding path program 1 times [2020-10-28 12:59:51,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:59:51,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183228595] [2020-10-28 12:59:51,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:59:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:51,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:51,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:52,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:52,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:53,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:53,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-28 12:59:53,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:59:53,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1984 [2020-10-28 12:59:53,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:53,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:53,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:59:53,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:59:53,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 12:59:53,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:59:53,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:59:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:53,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:53,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:53,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:59:53,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:53,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:59:53,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:53,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:53,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:59:53,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:53,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:59:53,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:59:53,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:59:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:53,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:53,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:53,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 12:59:53,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:53,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-28 12:59:53,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:53,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:53,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:59:53,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:59:53,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:59:53,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:59:54,285 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:59:54,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183228595] [2020-10-28 12:59:54,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:59:54,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:59:54,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090191370] [2020-10-28 12:59:54,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:59:54,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:59:54,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:59:54,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:59:54,303 INFO L87 Difference]: Start difference. First operand 1018 states and 1543 transitions. Second operand 7 states. [2020-10-28 13:00:06,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:00:06,176 INFO L93 Difference]: Finished difference Result 3031 states and 4690 transitions. [2020-10-28 13:00:06,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:00:06,177 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2020-10-28 13:00:06,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:00:06,197 INFO L225 Difference]: With dead ends: 3031 [2020-10-28 13:00:06,197 INFO L226 Difference]: Without dead ends: 2019 [2020-10-28 13:00:06,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:00:06,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-28 13:00:06,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 1987. [2020-10-28 13:00:06,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1987 states. [2020-10-28 13:00:06,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 3035 transitions. [2020-10-28 13:00:06,328 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 3035 transitions. Word has length 161 [2020-10-28 13:00:06,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:00:06,332 INFO L481 AbstractCegarLoop]: Abstraction has 1987 states and 3035 transitions. [2020-10-28 13:00:06,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:00:06,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 3035 transitions. [2020-10-28 13:00:06,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-28 13:00:06,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:00:06,347 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:00:06,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:00:06,348 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:00:06,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:00:06,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1697314717, now seen corresponding path program 1 times [2020-10-28 13:00:06,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:00:06,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998749304] [2020-10-28 13:00:06,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:00:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:06,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:06,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:08,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:08,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 13:00:08,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:00:08,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1588 [2020-10-28 13:00:08,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:08,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:00:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:00:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 13:00:08,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:08,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:00:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:08,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:08,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:08,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:00:08,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:08,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:00:08,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:08,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:08,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:00:08,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:08,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:00:08,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:00:08,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:00:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:08,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:08,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:08,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:00:08,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:08,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-28 13:00:08,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:08,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:08,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:00:08,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:00:08,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:00:08,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:00:08,660 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:00:08,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998749304] [2020-10-28 13:00:08,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:00:08,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:00:08,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615047595] [2020-10-28 13:00:08,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:00:08,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:00:08,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:00:08,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:00:08,663 INFO L87 Difference]: Start difference. First operand 1987 states and 3035 transitions. Second operand 7 states. [2020-10-28 13:00:17,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:00:17,868 INFO L93 Difference]: Finished difference Result 5274 states and 8273 transitions. [2020-10-28 13:00:17,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:00:17,869 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 167 [2020-10-28 13:00:17,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:00:17,894 INFO L225 Difference]: With dead ends: 5274 [2020-10-28 13:00:17,895 INFO L226 Difference]: Without dead ends: 3293 [2020-10-28 13:00:17,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:00:17,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2020-10-28 13:00:18,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 3263. [2020-10-28 13:00:18,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3263 states. [2020-10-28 13:00:18,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 4572 transitions. [2020-10-28 13:00:18,023 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 4572 transitions. Word has length 167 [2020-10-28 13:00:18,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:00:18,028 INFO L481 AbstractCegarLoop]: Abstraction has 3263 states and 4572 transitions. [2020-10-28 13:00:18,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:00:18,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 4572 transitions. [2020-10-28 13:00:18,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-28 13:00:18,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:00:18,034 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:00:18,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:00:18,035 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:00:18,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:00:18,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1831049309, now seen corresponding path program 1 times [2020-10-28 13:00:18,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:00:18,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848048414] [2020-10-28 13:00:18,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:00:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:18,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:18,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:18,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:19,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:19,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:20,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:20,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:20,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:23,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:23,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-28 13:00:23,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 13:00:23,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 13:00:23,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:23,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:23,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:00:23,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:00:23,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:00:23,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:00:23,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:00:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:23,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:23,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:23,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:00:23,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:23,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:00:23,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:23,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:23,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:23,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:23,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:23,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:23,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:00:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:23,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:23,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:23,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:00:23,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:23,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:00:23,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:23,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:23,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:00:23,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:23,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:00:23,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:23,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:00:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:23,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:23,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:23,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 13:00:23,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:23,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-28 13:00:23,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:23,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:00:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:00:23,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:00:23,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:23,900 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:00:23,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848048414] [2020-10-28 13:00:23,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:00:23,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:00:23,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928966904] [2020-10-28 13:00:23,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:00:23,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:00:23,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:00:23,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:00:23,904 INFO L87 Difference]: Start difference. First operand 3263 states and 4572 transitions. Second operand 7 states. [2020-10-28 13:00:35,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:00:35,344 INFO L93 Difference]: Finished difference Result 7207 states and 11021 transitions. [2020-10-28 13:00:35,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:00:35,345 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2020-10-28 13:00:35,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:00:35,378 INFO L225 Difference]: With dead ends: 7207 [2020-10-28 13:00:35,378 INFO L226 Difference]: Without dead ends: 5186 [2020-10-28 13:00:35,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:00:35,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5186 states. [2020-10-28 13:00:35,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5186 to 4832. [2020-10-28 13:00:35,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4832 states. [2020-10-28 13:00:35,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4832 states to 4832 states and 6495 transitions. [2020-10-28 13:00:35,550 INFO L78 Accepts]: Start accepts. Automaton has 4832 states and 6495 transitions. Word has length 256 [2020-10-28 13:00:35,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:00:35,551 INFO L481 AbstractCegarLoop]: Abstraction has 4832 states and 6495 transitions. [2020-10-28 13:00:35,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:00:35,551 INFO L276 IsEmpty]: Start isEmpty. Operand 4832 states and 6495 transitions. [2020-10-28 13:00:35,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-28 13:00:35,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:00:35,558 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:00:35,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:00:35,558 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:00:35,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:00:35,559 INFO L82 PathProgramCache]: Analyzing trace with hash -557631935, now seen corresponding path program 1 times [2020-10-28 13:00:35,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:00:35,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28537331] [2020-10-28 13:00:35,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:00:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:35,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:35,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:37,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:40,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:40,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-28 13:00:40,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:00:40,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-28 13:00:40,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:40,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:40,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:00:40,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:00:40,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 13:00:40,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:00:40,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:00:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:40,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:40,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:40,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:00:40,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:40,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:00:40,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:40,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:40,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:00:40,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:40,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:00:40,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:40,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:00:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:40,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:41,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:41,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:00:41,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:41,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-10-28 13:00:41,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:41,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:41,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:00:41,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:00:41,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:00:41,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:41,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 13:00:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:41,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:41,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:41,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 13:00:41,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:41,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 13:00:41,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:41,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:41,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:41,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-28 13:00:41,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:41,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:42,435 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 60 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:00:42,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28537331] [2020-10-28 13:00:42,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:00:42,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:00:42,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013238699] [2020-10-28 13:00:42,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:00:42,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:00:42,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:00:42,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:00:42,438 INFO L87 Difference]: Start difference. First operand 4832 states and 6495 transitions. Second operand 7 states. [2020-10-28 13:00:51,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:00:51,042 INFO L93 Difference]: Finished difference Result 9381 states and 12758 transitions. [2020-10-28 13:00:51,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:00:51,050 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 323 [2020-10-28 13:00:51,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:00:51,074 INFO L225 Difference]: With dead ends: 9381 [2020-10-28 13:00:51,075 INFO L226 Difference]: Without dead ends: 4862 [2020-10-28 13:00:51,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:00:51,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4862 states. [2020-10-28 13:00:51,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4862 to 4537. [2020-10-28 13:00:51,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4537 states. [2020-10-28 13:00:51,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4537 states to 4537 states and 6150 transitions. [2020-10-28 13:00:51,252 INFO L78 Accepts]: Start accepts. Automaton has 4537 states and 6150 transitions. Word has length 323 [2020-10-28 13:00:51,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:00:51,253 INFO L481 AbstractCegarLoop]: Abstraction has 4537 states and 6150 transitions. [2020-10-28 13:00:51,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:00:51,253 INFO L276 IsEmpty]: Start isEmpty. Operand 4537 states and 6150 transitions. [2020-10-28 13:00:51,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-10-28 13:00:51,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:00:51,262 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:00:51,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:00:51,263 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:00:51,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:00:51,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1550732470, now seen corresponding path program 1 times [2020-10-28 13:00:51,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:00:51,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442910604] [2020-10-28 13:00:51,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:00:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:51,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:51,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:53,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:53,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-28 13:00:53,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:00:53,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1927 [2020-10-28 13:00:53,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:53,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:53,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:00:53,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:00:53,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 13:00:53,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:53,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:00:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:53,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:53,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:53,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:00:53,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:53,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:00:53,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:53,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:53,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:53,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:00:53,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:00:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:53,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:54,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:54,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:00:54,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:54,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-10-28 13:00:54,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:54,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:54,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:00:54,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:54,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:00:54,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:00:54,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:00:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:54,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:54,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:54,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 13:00:54,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:54,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 13:00:54,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:54,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:54,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:00:54,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:00:54,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:00:54,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:00:54,607 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:00:54,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442910604] [2020-10-28 13:00:54,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:00:54,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:00:54,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546464352] [2020-10-28 13:00:54,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:00:54,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:00:54,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:00:54,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:00:54,613 INFO L87 Difference]: Start difference. First operand 4537 states and 6150 transitions. Second operand 7 states. [2020-10-28 13:01:10,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:01:10,572 INFO L93 Difference]: Finished difference Result 9773 states and 13313 transitions. [2020-10-28 13:01:10,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:01:10,573 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 397 [2020-10-28 13:01:10,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:01:10,601 INFO L225 Difference]: With dead ends: 9773 [2020-10-28 13:01:10,601 INFO L226 Difference]: Without dead ends: 5549 [2020-10-28 13:01:10,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:01:10,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5549 states. [2020-10-28 13:01:10,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5549 to 5487. [2020-10-28 13:01:10,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5487 states. [2020-10-28 13:01:10,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5487 states to 5487 states and 6712 transitions. [2020-10-28 13:01:10,760 INFO L78 Accepts]: Start accepts. Automaton has 5487 states and 6712 transitions. Word has length 397 [2020-10-28 13:01:10,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:01:10,761 INFO L481 AbstractCegarLoop]: Abstraction has 5487 states and 6712 transitions. [2020-10-28 13:01:10,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:01:10,761 INFO L276 IsEmpty]: Start isEmpty. Operand 5487 states and 6712 transitions. [2020-10-28 13:01:10,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-10-28 13:01:10,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:01:10,771 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:01:10,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:01:10,771 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:01:10,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:01:10,772 INFO L82 PathProgramCache]: Analyzing trace with hash 146001769, now seen corresponding path program 1 times [2020-10-28 13:01:10,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:01:10,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201863832] [2020-10-28 13:01:10,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:01:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:10,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:11,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:11,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:12,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:15,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:15,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-10-28 13:01:15,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:01:15,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 13:01:15,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:15,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:15,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:15,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:01:15,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 277 [2020-10-28 13:01:15,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:16,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:01:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:16,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:16,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:16,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:01:16,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:16,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:01:16,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:16,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:16,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:01:16,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:16,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:01:16,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:01:16,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:01:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:16,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:16,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:16,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:01:16,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:16,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 13:01:16,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:16,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:16,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:01:16,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:16,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:01:16,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:16,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:01:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:16,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:16,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:16,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:01:16,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:16,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-10-28 13:01:16,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:16,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:16,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:16,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:01:16,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-28 13:01:16,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:17,248 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:01:17,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201863832] [2020-10-28 13:01:17,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:01:17,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:01:17,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256700958] [2020-10-28 13:01:17,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:01:17,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:01:17,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:01:17,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:01:17,254 INFO L87 Difference]: Start difference. First operand 5487 states and 6712 transitions. Second operand 7 states. [2020-10-28 13:01:33,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:01:33,546 INFO L93 Difference]: Finished difference Result 13254 states and 17189 transitions. [2020-10-28 13:01:33,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:01:33,548 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 407 [2020-10-28 13:01:33,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:01:33,587 INFO L225 Difference]: With dead ends: 13254 [2020-10-28 13:01:33,587 INFO L226 Difference]: Without dead ends: 8046 [2020-10-28 13:01:33,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:01:33,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8046 states. [2020-10-28 13:01:33,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8046 to 7671. [2020-10-28 13:01:33,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7671 states. [2020-10-28 13:01:33,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7671 states to 7671 states and 8724 transitions. [2020-10-28 13:01:33,808 INFO L78 Accepts]: Start accepts. Automaton has 7671 states and 8724 transitions. Word has length 407 [2020-10-28 13:01:33,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:01:33,808 INFO L481 AbstractCegarLoop]: Abstraction has 7671 states and 8724 transitions. [2020-10-28 13:01:33,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:01:33,808 INFO L276 IsEmpty]: Start isEmpty. Operand 7671 states and 8724 transitions. [2020-10-28 13:01:33,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-10-28 13:01:33,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:01:33,822 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:01:33,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:01:33,822 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:01:33,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:01:33,823 INFO L82 PathProgramCache]: Analyzing trace with hash -958106064, now seen corresponding path program 1 times [2020-10-28 13:01:33,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:01:33,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985880746] [2020-10-28 13:01:33,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:01:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:34,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:34,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:36,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:39,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:39,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 512 [2020-10-28 13:01:39,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:01:39,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-28 13:01:39,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:39,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:39,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:39,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:01:39,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:01:39,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:01:39,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:01:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:39,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:39,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:39,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:01:39,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:39,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:01:39,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:39,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:39,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:01:39,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:39,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:01:39,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:01:39,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:01:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:39,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:39,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:39,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:01:39,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:39,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-28 13:01:39,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:39,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:01:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:01:39,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:01:39,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:01:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:39,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:40,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:40,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:01:40,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:40,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-28 13:01:40,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:40,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:40,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:40,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:01:40,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:01:40,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:40,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-28 13:01:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:40,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:40,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:40,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:01:40,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:40,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:01:40,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:40,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:01:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 13:01:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:01:40,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:40,440 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 202 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 13:01:40,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985880746] [2020-10-28 13:01:40,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:01:40,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:01:40,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737775341] [2020-10-28 13:01:40,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:01:40,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:01:40,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:01:40,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:01:40,443 INFO L87 Difference]: Start difference. First operand 7671 states and 8724 transitions. Second operand 7 states. [2020-10-28 13:01:49,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:01:49,356 INFO L93 Difference]: Finished difference Result 16010 states and 18220 transitions. [2020-10-28 13:01:49,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:01:49,358 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 496 [2020-10-28 13:01:49,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:01:49,404 INFO L225 Difference]: With dead ends: 16010 [2020-10-28 13:01:49,404 INFO L226 Difference]: Without dead ends: 8652 [2020-10-28 13:01:49,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:01:49,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8652 states. [2020-10-28 13:01:49,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8652 to 8297. [2020-10-28 13:01:49,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8297 states. [2020-10-28 13:01:49,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8297 states to 8297 states and 9382 transitions. [2020-10-28 13:01:49,616 INFO L78 Accepts]: Start accepts. Automaton has 8297 states and 9382 transitions. Word has length 496 [2020-10-28 13:01:49,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:01:49,617 INFO L481 AbstractCegarLoop]: Abstraction has 8297 states and 9382 transitions. [2020-10-28 13:01:49,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:01:49,617 INFO L276 IsEmpty]: Start isEmpty. Operand 8297 states and 9382 transitions. [2020-10-28 13:01:49,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2020-10-28 13:01:49,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:01:49,632 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:01:49,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:01:49,632 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:01:49,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:01:49,633 INFO L82 PathProgramCache]: Analyzing trace with hash -25192008, now seen corresponding path program 1 times [2020-10-28 13:01:49,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:01:49,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925601040] [2020-10-28 13:01:49,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:01:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:49,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:50,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:51,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:51,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 524 [2020-10-28 13:01:51,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:01:51,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2150 [2020-10-28 13:01:51,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:51,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:51,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:51,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:01:51,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:01:51,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:01:52,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:01:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:52,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:52,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:52,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:01:52,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:52,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:01:52,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:52,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:52,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:01:52,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:52,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:01:52,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:52,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:01:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:52,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:52,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:52,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:01:52,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:52,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 13:01:52,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:52,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:52,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:01:52,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:52,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:01:52,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:52,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:01:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:52,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:52,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:52,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:01:52,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:52,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:01:52,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:52,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:52,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:01:52,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:52,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:01:52,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:52,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:01:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:52,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:52,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:52,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:01:52,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:52,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 13:01:52,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:52,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:52,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:52,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:01:52,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:01:52,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:52,885 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 235 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:01:52,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925601040] [2020-10-28 13:01:52,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:01:52,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:01:52,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029526437] [2020-10-28 13:01:52,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:01:52,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:01:52,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:01:52,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:01:52,888 INFO L87 Difference]: Start difference. First operand 8297 states and 9382 transitions. Second operand 7 states. [2020-10-28 13:02:02,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:02:02,514 INFO L93 Difference]: Finished difference Result 18565 states and 21910 transitions. [2020-10-28 13:02:02,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:02:02,516 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 508 [2020-10-28 13:02:02,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:02:02,558 INFO L225 Difference]: With dead ends: 18565 [2020-10-28 13:02:02,559 INFO L226 Difference]: Without dead ends: 11511 [2020-10-28 13:02:02,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:02:02,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11511 states. [2020-10-28 13:02:02,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11511 to 10813. [2020-10-28 13:02:02,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10813 states. [2020-10-28 13:02:02,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10813 states to 10813 states and 12234 transitions. [2020-10-28 13:02:02,862 INFO L78 Accepts]: Start accepts. Automaton has 10813 states and 12234 transitions. Word has length 508 [2020-10-28 13:02:02,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:02:02,864 INFO L481 AbstractCegarLoop]: Abstraction has 10813 states and 12234 transitions. [2020-10-28 13:02:02,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:02:02,864 INFO L276 IsEmpty]: Start isEmpty. Operand 10813 states and 12234 transitions. [2020-10-28 13:02:02,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2020-10-28 13:02:02,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:02:02,873 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:02:02,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:02:02,873 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:02:02,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:02:02,874 INFO L82 PathProgramCache]: Analyzing trace with hash 737260468, now seen corresponding path program 1 times [2020-10-28 13:02:02,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:02:02,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91042921] [2020-10-28 13:02:02,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:02:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:03,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:03,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:04,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:05,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:05,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:08,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:08,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 542 [2020-10-28 13:02:08,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:02:08,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-28 13:02:08,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:08,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:08,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:02:08,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:02:08,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 13:02:08,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:08,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:02:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:08,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:08,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:08,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:02:08,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:08,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:02:08,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:08,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:08,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:08,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:08,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:08,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:02:08,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:02:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:08,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:08,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:08,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:02:08,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:08,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 13:02:08,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:08,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:08,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:08,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:08,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:08,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:08,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:02:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:08,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:08,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:08,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:02:08,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:08,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 13:02:08,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:08,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:08,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:02:08,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:08,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:02:08,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:08,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:02:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:08,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:08,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:08,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:02:08,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:08,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 13:02:08,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:08,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:02:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 13:02:08,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:09,070 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 234 proven. 31 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-28 13:02:09,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91042921] [2020-10-28 13:02:09,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:02:09,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:02:09,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825895571] [2020-10-28 13:02:09,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:02:09,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:02:09,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:02:09,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:02:09,073 INFO L87 Difference]: Start difference. First operand 10813 states and 12234 transitions. Second operand 6 states. [2020-10-28 13:02:18,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:02:18,884 INFO L93 Difference]: Finished difference Result 25198 states and 29133 transitions. [2020-10-28 13:02:18,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:02:18,886 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 526 [2020-10-28 13:02:18,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:02:18,949 INFO L225 Difference]: With dead ends: 25198 [2020-10-28 13:02:18,949 INFO L226 Difference]: Without dead ends: 15939 [2020-10-28 13:02:18,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:02:18,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15939 states. [2020-10-28 13:02:19,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15939 to 15912. [2020-10-28 13:02:19,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15912 states. [2020-10-28 13:02:19,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15912 states to 15912 states and 18321 transitions. [2020-10-28 13:02:19,343 INFO L78 Accepts]: Start accepts. Automaton has 15912 states and 18321 transitions. Word has length 526 [2020-10-28 13:02:19,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:02:19,344 INFO L481 AbstractCegarLoop]: Abstraction has 15912 states and 18321 transitions. [2020-10-28 13:02:19,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:02:19,345 INFO L276 IsEmpty]: Start isEmpty. Operand 15912 states and 18321 transitions. [2020-10-28 13:02:19,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2020-10-28 13:02:19,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:02:19,354 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:02:19,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:02:19,355 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:02:19,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:02:19,355 INFO L82 PathProgramCache]: Analyzing trace with hash -893666538, now seen corresponding path program 1 times [2020-10-28 13:02:19,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:02:19,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992943554] [2020-10-28 13:02:19,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:02:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:19,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:20,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:21,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:22,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:22,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 551 [2020-10-28 13:02:22,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:02:22,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2908 [2020-10-28 13:02:22,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:22,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:22,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:22,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:02:22,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 13:02:22,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:22,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:02:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:22,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:22,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:22,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:02:22,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:22,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:02:22,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:22,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:22,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:22,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:22,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:22,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:22,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:02:22,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:22,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:22,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:22,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:02:22,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:22,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 13:02:22,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:22,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:22,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:22,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:22,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:22,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:22,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:02:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:22,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:22,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:22,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:02:22,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:22,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 13:02:22,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:22,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:22,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:02:22,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:22,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:02:22,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:22,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:02:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:22,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:23,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:23,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:02:23,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:23,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-28 13:02:23,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:23,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:23,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:23,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:02:23,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-28 13:02:23,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:23,358 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 289 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:02:23,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992943554] [2020-10-28 13:02:23,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:02:23,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:02:23,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053247839] [2020-10-28 13:02:23,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:02:23,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:02:23,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:02:23,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:02:23,361 INFO L87 Difference]: Start difference. First operand 15912 states and 18321 transitions. Second operand 7 states. [2020-10-28 13:02:23,521 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:02:36,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:02:36,914 INFO L93 Difference]: Finished difference Result 36528 states and 43319 transitions. [2020-10-28 13:02:36,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:02:36,917 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 535 [2020-10-28 13:02:36,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:02:36,995 INFO L225 Difference]: With dead ends: 36528 [2020-10-28 13:02:36,995 INFO L226 Difference]: Without dead ends: 20929 [2020-10-28 13:02:37,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:02:37,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20929 states. [2020-10-28 13:02:37,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20929 to 20582. [2020-10-28 13:02:37,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20582 states. [2020-10-28 13:02:37,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20582 states to 20582 states and 23925 transitions. [2020-10-28 13:02:37,508 INFO L78 Accepts]: Start accepts. Automaton has 20582 states and 23925 transitions. Word has length 535 [2020-10-28 13:02:37,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:02:37,509 INFO L481 AbstractCegarLoop]: Abstraction has 20582 states and 23925 transitions. [2020-10-28 13:02:37,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:02:37,510 INFO L276 IsEmpty]: Start isEmpty. Operand 20582 states and 23925 transitions. [2020-10-28 13:02:37,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2020-10-28 13:02:37,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:02:37,522 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:02:37,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:02:37,522 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:02:37,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:02:37,523 INFO L82 PathProgramCache]: Analyzing trace with hash -108756956, now seen corresponding path program 1 times [2020-10-28 13:02:37,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:02:37,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780534953] [2020-10-28 13:02:37,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:02:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:37,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:37,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:38,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:40,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:42,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:42,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:42,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 575 [2020-10-28 13:02:42,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:02:42,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 13:02:42,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:42,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:42,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:42,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-28 13:02:42,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 289 [2020-10-28 13:02:42,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:42,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:02:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:42,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:42,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:42,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:02:42,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:42,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:02:42,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:42,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:42,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:42,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:42,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:42,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:42,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:02:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:42,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:43,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:43,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 13:02:43,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:43,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-28 13:02:43,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:43,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:43,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:02:43,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:43,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-28 13:02:43,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:43,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-28 13:02:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:43,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:43,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:43,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:02:43,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:43,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-10-28 13:02:43,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:43,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:43,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:43,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:02:43,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-28 13:02:43,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:44,416 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 294 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:02:44,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780534953] [2020-10-28 13:02:44,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:02:44,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:02:44,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551834796] [2020-10-28 13:02:44,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:02:44,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:02:44,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:02:44,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:02:44,418 INFO L87 Difference]: Start difference. First operand 20582 states and 23925 transitions. Second operand 7 states. [2020-10-28 13:02:50,025 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:02:57,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:02:57,289 INFO L93 Difference]: Finished difference Result 43102 states and 50513 transitions. [2020-10-28 13:02:57,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:02:57,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 561 [2020-10-28 13:02:57,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:02:57,379 INFO L225 Difference]: With dead ends: 43102 [2020-10-28 13:02:57,379 INFO L226 Difference]: Without dead ends: 24072 [2020-10-28 13:02:57,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:02:57,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24072 states. [2020-10-28 13:02:58,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24072 to 23725. [2020-10-28 13:02:58,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23725 states. [2020-10-28 13:02:58,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23725 states to 23725 states and 27581 transitions. [2020-10-28 13:02:58,082 INFO L78 Accepts]: Start accepts. Automaton has 23725 states and 27581 transitions. Word has length 561 [2020-10-28 13:02:58,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:02:58,083 INFO L481 AbstractCegarLoop]: Abstraction has 23725 states and 27581 transitions. [2020-10-28 13:02:58,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:02:58,083 INFO L276 IsEmpty]: Start isEmpty. Operand 23725 states and 27581 transitions. [2020-10-28 13:02:58,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2020-10-28 13:02:58,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:02:58,092 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:02:58,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:02:58,093 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:02:58,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:02:58,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1173185356, now seen corresponding path program 1 times [2020-10-28 13:02:58,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:02:58,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763444821] [2020-10-28 13:02:58,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:02:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:58,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:58,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:00,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:00,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 580 [2020-10-28 13:03:00,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:03:00,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2073 [2020-10-28 13:03:00,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:00,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:00,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:03:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:03:00,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:00,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:00,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:00,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:00,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:00,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:00,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:03:00,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:00,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:00,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:00,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:00,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:00,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:00,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:03:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:00,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:00,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:00,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:03:00,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:00,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 13:03:00,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:00,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:00,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:00,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:00,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:00,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:00,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:03:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:00,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:00,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:00,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:03:00,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:00,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:03:00,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:00,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:00,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:00,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:00,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:03:00,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:00,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:03:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:00,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:01,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:01,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:03:01,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:01,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-28 13:03:01,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:01,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:01,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:01,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:03:01,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:03:01,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 329 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:03:01,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763444821] [2020-10-28 13:03:01,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:03:01,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:03:01,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106576698] [2020-10-28 13:03:01,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:03:01,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:01,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:03:01,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:03:01,511 INFO L87 Difference]: Start difference. First operand 23725 states and 27581 transitions. Second operand 7 states. [2020-10-28 13:03:15,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:03:15,783 INFO L93 Difference]: Finished difference Result 49691 states and 57695 transitions. [2020-10-28 13:03:15,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:03:15,786 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 564 [2020-10-28 13:03:15,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:03:15,917 INFO L225 Difference]: With dead ends: 49691 [2020-10-28 13:03:15,917 INFO L226 Difference]: Without dead ends: 26279 [2020-10-28 13:03:15,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:03:15,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26279 states. [2020-10-28 13:03:16,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26279 to 26246. [2020-10-28 13:03:16,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26246 states. [2020-10-28 13:03:16,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26246 states to 26246 states and 29909 transitions. [2020-10-28 13:03:16,828 INFO L78 Accepts]: Start accepts. Automaton has 26246 states and 29909 transitions. Word has length 564 [2020-10-28 13:03:16,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:03:16,832 INFO L481 AbstractCegarLoop]: Abstraction has 26246 states and 29909 transitions. [2020-10-28 13:03:16,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:03:16,832 INFO L276 IsEmpty]: Start isEmpty. Operand 26246 states and 29909 transitions. [2020-10-28 13:03:16,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2020-10-28 13:03:16,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:16,862 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:03:16,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:03:16,863 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:16,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:16,864 INFO L82 PathProgramCache]: Analyzing trace with hash 809400395, now seen corresponding path program 1 times [2020-10-28 13:03:16,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:16,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248465727] [2020-10-28 13:03:16,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:17,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:17,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking...