/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/Problem04_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:30:56,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:30:56,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:30:57,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:30:57,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:30:57,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:30:57,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:30:57,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:30:57,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:30:57,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:30:57,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:30:57,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:30:57,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:30:57,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:30:57,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:30:57,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:30:57,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:30:57,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:30:57,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:30:57,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:30:57,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:30:57,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:30:57,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:30:57,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:30:57,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:30:57,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:30:57,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:30:57,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:30:57,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:30:57,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:30:57,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:30:57,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:30:57,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:30:57,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:30:57,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:30:57,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:30:57,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:30:57,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:30:57,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:30:57,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:30:57,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:30:57,068 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 10:30:57,119 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:30:57,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:30:57,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:30:57,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:30:57,122 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:30:57,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:30:57,122 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:30:57,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:30:57,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:30:57,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:30:57,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:30:57,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:30:57,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:30:57,125 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:30:57,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:30:57,125 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:30:57,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:30:57,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:30:57,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:30:57,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:30:57,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:30:57,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:30:57,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:30:57,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:30:57,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:30:57,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:30:57,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:30:57,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:30:57,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:30:57,128 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:30:57,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:30:57,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:30:57,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:30:57,626 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:30:57,628 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:30:57,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label30.c [2020-10-28 10:30:57,710 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce6232225/2dffba68adab49a1b47d61bccd24ed3f/FLAG89b7c6ffd [2020-10-28 10:30:58,759 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:30:58,759 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label30.c [2020-10-28 10:30:58,806 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce6232225/2dffba68adab49a1b47d61bccd24ed3f/FLAG89b7c6ffd [2020-10-28 10:30:59,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce6232225/2dffba68adab49a1b47d61bccd24ed3f [2020-10-28 10:30:59,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:30:59,181 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:30:59,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:30:59,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:30:59,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:30:59,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:30:59" (1/1) ... [2020-10-28 10:30:59,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de45a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:30:59, skipping insertion in model container [2020-10-28 10:30:59,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:30:59" (1/1) ... [2020-10-28 10:30:59,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:30:59,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:31:00,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:31:00,769 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:31:01,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:31:01,460 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:31:01,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:31:01 WrapperNode [2020-10-28 10:31:01,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:31:01,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:31:01,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:31:01,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:31:01,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:31:01" (1/1) ... [2020-10-28 10:31:01,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:31:01" (1/1) ... [2020-10-28 10:31:01,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:31:01" (1/1) ... [2020-10-28 10:31:01,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:31:01" (1/1) ... [2020-10-28 10:31:01,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:31:01" (1/1) ... [2020-10-28 10:31:01,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:31:01" (1/1) ... [2020-10-28 10:31:01,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:31:01" (1/1) ... [2020-10-28 10:31:01,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:31:01,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:31:01,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:31:01,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:31:01,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:31:01" (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 10:31:01,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:31:01,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:31:01,880 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:31:01,880 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:31:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:31:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:31:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:31:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:31:01,881 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:31:01,881 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:31:01,882 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:31:01,882 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:31:01,882 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:31:01,882 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:31:01,882 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:31:01,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:31:01,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:31:01,883 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:31:01,883 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:31:01,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:31:01,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:31:01,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:31:01,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:31:01,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:31:01,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:31:06,750 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:31:06,751 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:31:06,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:31:06 BoogieIcfgContainer [2020-10-28 10:31:06,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:31:06,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:31:06,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:31:06,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:31:06,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:30:59" (1/3) ... [2020-10-28 10:31:06,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2affc074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:31:06, skipping insertion in model container [2020-10-28 10:31:06,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:31:01" (2/3) ... [2020-10-28 10:31:06,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2affc074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:31:06, skipping insertion in model container [2020-10-28 10:31:06,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:31:06" (3/3) ... [2020-10-28 10:31:06,768 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label30.c [2020-10-28 10:31:06,782 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:31:06,788 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:31:06,802 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:31:06,848 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:31:06,848 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:31:06,848 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:31:06,848 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:31:06,848 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:31:06,849 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:31:06,849 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:31:06,849 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:31:06,900 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-28 10:31:06,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2020-10-28 10:31:06,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:31:06,963 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:31:06,964 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:31:06,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:31:06,971 INFO L82 PathProgramCache]: Analyzing trace with hash 525808188, now seen corresponding path program 1 times [2020-10-28 10:31:06,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:31:06,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240223061] [2020-10-28 10:31:06,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:31:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:08,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:12,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:12,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 810 [2020-10-28 10:31:12,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:12,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-28 10:31:12,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:12,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:12,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 10:31:12,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:31:12,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 801 [2020-10-28 10:31:12,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:31:13,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:31:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:13,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:13,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:13,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:31:13,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:13,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 10:31:13,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:13,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:13,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:31:13,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:31:13,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:31:13,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:31:15,130 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 10:31:15,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240223061] [2020-10-28 10:31:15,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:31:15,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 10:31:15,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734960341] [2020-10-28 10:31:15,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:31:15,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:31:15,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:31:15,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:31:15,168 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 5 states. [2020-10-28 10:31:32,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:31:32,831 INFO L93 Difference]: Finished difference Result 3526 states and 6828 transitions. [2020-10-28 10:31:32,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 10:31:32,834 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 794 [2020-10-28 10:31:32,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:31:32,906 INFO L225 Difference]: With dead ends: 3526 [2020-10-28 10:31:32,907 INFO L226 Difference]: Without dead ends: 2548 [2020-10-28 10:31:32,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 10:31:32,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2020-10-28 10:31:33,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2535. [2020-10-28 10:31:33,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2535 states. [2020-10-28 10:31:33,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2535 states to 2535 states and 4299 transitions. [2020-10-28 10:31:33,155 INFO L78 Accepts]: Start accepts. Automaton has 2535 states and 4299 transitions. Word has length 794 [2020-10-28 10:31:33,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:31:33,159 INFO L481 AbstractCegarLoop]: Abstraction has 2535 states and 4299 transitions. [2020-10-28 10:31:33,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:31:33,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2535 states and 4299 transitions. [2020-10-28 10:31:33,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2020-10-28 10:31:33,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:31:33,216 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:31:33,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:31:33,217 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:31:33,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:31:33,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1226671912, now seen corresponding path program 1 times [2020-10-28 10:31:33,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:31:33,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273638759] [2020-10-28 10:31:33,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:31:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:33,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:33,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:35,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:38,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:38,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 842 [2020-10-28 10:31:38,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:31:38,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-28 10:31:38,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:38,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:38,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:31:38,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 10:31:38,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 10:31:38,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 10:31:38,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:31:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:38,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:38,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:38,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:31:38,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:38,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:31:38,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:38,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:31:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:31:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:31:38,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 10:31:38,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:31:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:38,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:38,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:38,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 10:31:38,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:38,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 10:31:38,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:38,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:38,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:31:38,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:31:38,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 10:31:38,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:38,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 10:31:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:38,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:38,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:38,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 10:31:38,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:38,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 10:31:38,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:38,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:38,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:31:38,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:31:38,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 10:31:38,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:31:39,326 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:31:39,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273638759] [2020-10-28 10:31:39,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:31:39,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:31:39,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96329778] [2020-10-28 10:31:39,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:31:39,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:31:39,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:31:39,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:31:39,336 INFO L87 Difference]: Start difference. First operand 2535 states and 4299 transitions. Second operand 7 states. [2020-10-28 10:31:40,154 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:32:00,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:32:00,274 INFO L93 Difference]: Finished difference Result 10284 states and 17803 transitions. [2020-10-28 10:32:00,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:32:00,275 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 822 [2020-10-28 10:32:00,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:32:00,335 INFO L225 Difference]: With dead ends: 10284 [2020-10-28 10:32:00,336 INFO L226 Difference]: Without dead ends: 7755 [2020-10-28 10:32:00,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:32:00,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7755 states. [2020-10-28 10:32:00,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7755 to 7730. [2020-10-28 10:32:00,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7730 states. [2020-10-28 10:32:00,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7730 states to 7730 states and 11295 transitions. [2020-10-28 10:32:00,630 INFO L78 Accepts]: Start accepts. Automaton has 7730 states and 11295 transitions. Word has length 822 [2020-10-28 10:32:00,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:32:00,630 INFO L481 AbstractCegarLoop]: Abstraction has 7730 states and 11295 transitions. [2020-10-28 10:32:00,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:32:00,630 INFO L276 IsEmpty]: Start isEmpty. Operand 7730 states and 11295 transitions. [2020-10-28 10:32:00,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2020-10-28 10:32:00,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:32:00,668 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:32:00,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:32:00,668 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:32:00,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:32:00,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1719078015, now seen corresponding path program 1 times [2020-10-28 10:32:00,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:32:00,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470965596] [2020-10-28 10:32:00,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:32:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:00,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:00,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:04,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:05,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:05,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:05,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 849 [2020-10-28 10:32:05,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:32:05,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 10:32:05,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:05,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:05,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:32:05,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 10:32:05,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 10:32:05,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:06,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:32:06,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:06,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:06,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:06,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:32:06,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:06,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:32:06,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:06,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:06,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:32:06,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:32:06,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:32:06,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:06,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:32:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:06,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:06,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:06,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 10:32:06,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:06,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 10:32:06,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:06,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:06,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:32:06,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:32:06,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 10:32:06,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:06,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 10:32:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:06,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:06,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:06,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 10:32:06,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:06,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 10:32:06,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:06,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:06,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:32:06,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:32:06,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 10:32:06,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:06,673 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:32:06,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470965596] [2020-10-28 10:32:06,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:32:06,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:32:06,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810129371] [2020-10-28 10:32:06,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:32:06,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:32:06,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:32:06,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:32:06,676 INFO L87 Difference]: Start difference. First operand 7730 states and 11295 transitions. Second operand 7 states. [2020-10-28 10:32:06,944 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:32:15,387 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:32:21,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:32:21,507 INFO L93 Difference]: Finished difference Result 18308 states and 27576 transitions. [2020-10-28 10:32:21,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:32:21,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 829 [2020-10-28 10:32:21,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:32:21,569 INFO L225 Difference]: With dead ends: 18308 [2020-10-28 10:32:21,569 INFO L226 Difference]: Without dead ends: 10584 [2020-10-28 10:32:21,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:32:21,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10584 states. [2020-10-28 10:32:21,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10584 to 10504. [2020-10-28 10:32:21,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10504 states. [2020-10-28 10:32:21,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10504 states to 10504 states and 13506 transitions. [2020-10-28 10:32:21,924 INFO L78 Accepts]: Start accepts. Automaton has 10504 states and 13506 transitions. Word has length 829 [2020-10-28 10:32:21,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:32:21,925 INFO L481 AbstractCegarLoop]: Abstraction has 10504 states and 13506 transitions. [2020-10-28 10:32:21,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:32:21,925 INFO L276 IsEmpty]: Start isEmpty. Operand 10504 states and 13506 transitions. [2020-10-28 10:32:21,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 884 [2020-10-28 10:32:21,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:32:21,971 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, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:32:21,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:32:21,971 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:32:21,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:32:21,972 INFO L82 PathProgramCache]: Analyzing trace with hash -2045444109, now seen corresponding path program 1 times [2020-10-28 10:32:21,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:32:21,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823683430] [2020-10-28 10:32:21,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:32:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:22,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:22,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:25,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:26,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:27,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:27,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 903 [2020-10-28 10:32:27,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:32:27,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-28 10:32:27,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:27,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:27,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:32:27,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 10:32:27,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 10:32:27,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:27,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:32:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:27,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:27,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:27,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:32:27,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:27,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:32:27,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:27,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:27,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:32:27,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:32:27,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:32:27,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:27,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:32:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:27,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:27,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:27,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 10:32:27,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:27,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 10:32:27,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:27,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:27,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:32:27,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:32:27,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 10:32:27,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:27,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 10:32:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:27,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:27,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:27,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 10:32:27,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:27,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 10:32:27,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:27,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:27,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:32:27,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:32:27,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 10:32:27,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:28,138 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:32:28,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823683430] [2020-10-28 10:32:28,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:32:28,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:32:28,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146503270] [2020-10-28 10:32:28,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:32:28,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:32:28,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:32:28,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:32:28,141 INFO L87 Difference]: Start difference. First operand 10504 states and 13506 transitions. Second operand 7 states. [2020-10-28 10:32:28,277 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:32:41,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:32:41,807 INFO L93 Difference]: Finished difference Result 29761 states and 39323 transitions. [2020-10-28 10:32:41,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:32:41,808 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 883 [2020-10-28 10:32:41,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:32:41,891 INFO L225 Difference]: With dead ends: 29761 [2020-10-28 10:32:41,891 INFO L226 Difference]: Without dead ends: 17595 [2020-10-28 10:32:41,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 10:32:41,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17595 states. [2020-10-28 10:32:42,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17595 to 16649. [2020-10-28 10:32:42,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16649 states. [2020-10-28 10:32:42,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16649 states to 16649 states and 20490 transitions. [2020-10-28 10:32:42,380 INFO L78 Accepts]: Start accepts. Automaton has 16649 states and 20490 transitions. Word has length 883 [2020-10-28 10:32:42,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:32:42,380 INFO L481 AbstractCegarLoop]: Abstraction has 16649 states and 20490 transitions. [2020-10-28 10:32:42,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:32:42,381 INFO L276 IsEmpty]: Start isEmpty. Operand 16649 states and 20490 transitions. [2020-10-28 10:32:42,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1016 [2020-10-28 10:32:42,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:32:42,451 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:32:42,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:32:42,451 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:32:42,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:32:42,452 INFO L82 PathProgramCache]: Analyzing trace with hash 735441693, now seen corresponding path program 1 times [2020-10-28 10:32:42,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:32:42,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055524568] [2020-10-28 10:32:42,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:32:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:42,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:42,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:42,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:47,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:47,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1037 [2020-10-28 10:32:47,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:32:47,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-28 10:32:47,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:47,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:47,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:32:47,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-28 10:32:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 10:32:47,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:47,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:32:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:47,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:47,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:47,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:32:47,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:47,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 10:32:47,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:47,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:47,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:32:47,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:32:47,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:32:47,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:47,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:32:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:47,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:47,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:47,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 10:32:47,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:47,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:32:47,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:47,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:32:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:32:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:32:47,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:47,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 10:32:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:47,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:47,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:47,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 10:32:47,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:47,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 10:32:47,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:47,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:47,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:32:47,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:32:47,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 10:32:47,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:47,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 10:32:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:48,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:48,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:48,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 10:32:48,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:48,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-28 10:32:48,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:48,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:48,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:32:48,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:32:48,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-28 10:32:48,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-28 10:32:48,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055524568] [2020-10-28 10:32:48,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:32:48,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:32:48,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272824822] [2020-10-28 10:32:48,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:32:48,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:32:48,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:32:48,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:32:48,869 INFO L87 Difference]: Start difference. First operand 16649 states and 20490 transitions. Second operand 7 states. [2020-10-28 10:32:48,996 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:32:52,245 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:33:01,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:33:01,696 INFO L93 Difference]: Finished difference Result 40271 states and 50956 transitions. [2020-10-28 10:33:01,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:33:01,698 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1015 [2020-10-28 10:33:01,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:33:01,788 INFO L225 Difference]: With dead ends: 40271 [2020-10-28 10:33:01,788 INFO L226 Difference]: Without dead ends: 21924 [2020-10-28 10:33:01,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 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 10:33:01,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21924 states. [2020-10-28 10:33:02,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21924 to 21829. [2020-10-28 10:33:02,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21829 states. [2020-10-28 10:33:02,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21829 states to 21829 states and 26911 transitions. [2020-10-28 10:33:02,446 INFO L78 Accepts]: Start accepts. Automaton has 21829 states and 26911 transitions. Word has length 1015 [2020-10-28 10:33:02,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:33:02,447 INFO L481 AbstractCegarLoop]: Abstraction has 21829 states and 26911 transitions. [2020-10-28 10:33:02,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:33:02,447 INFO L276 IsEmpty]: Start isEmpty. Operand 21829 states and 26911 transitions. [2020-10-28 10:33:02,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1095 [2020-10-28 10:33:02,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:33:02,510 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:33:02,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:33:02,511 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:33:02,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:33:02,512 INFO L82 PathProgramCache]: Analyzing trace with hash -764533908, now seen corresponding path program 1 times [2020-10-28 10:33:02,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:33:02,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145169530] [2020-10-28 10:33:02,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:33:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:33:02,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:02,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:02,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:03,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:07,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:33:07,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1118 [2020-10-28 10:33:07,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:33:07,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5166 [2020-10-28 10:33:07,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:33:07,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:33:07,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:33:07,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-28 10:33:07,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 10:33:07,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:33:08,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:33:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:33:08,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:08,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:33:08,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:33:08,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:33:08,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:33:08,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:33:08,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:33:08,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:33:08,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:33:08,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:33:08,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:33:08,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:33:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:33:08,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:08,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:33:08,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 10:33:08,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:33:08,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:33:08,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:33:08,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:33:08,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:33:08,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:33:08,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:33:08,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:33:08,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 10:33:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:33:08,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:08,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:33:08,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 10:33:08,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:33:08,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 10:33:08,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:33:08,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:33:08,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:33:08,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:33:08,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:33:08,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:33:08,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 10:33:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:33:08,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:08,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:33:08,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 10:33:08,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:33:08,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 10:33:08,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:33:08,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:33:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:33:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:33:08,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 10:33:08,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:33:08,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-28 10:33:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:33:08,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:08,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:33:08,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 10:33:08,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:33:08,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-28 10:33:08,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:33:08,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:33:08,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:33:08,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:33:08,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-28 10:33:08,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:33:09,247 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 449 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-10-28 10:33:09,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145169530] [2020-10-28 10:33:09,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:33:09,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:33:09,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570538528] [2020-10-28 10:33:09,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:33:09,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:33:09,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:33:09,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:33:09,251 INFO L87 Difference]: Start difference. First operand 21829 states and 26911 transitions. Second operand 7 states. [2020-10-28 10:33:23,340 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:33:25,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:33:25,133 INFO L93 Difference]: Finished difference Result 59494 states and 76796 transitions. [2020-10-28 10:33:25,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:33:25,134 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1094 [2020-10-28 10:33:25,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:33:25,294 INFO L225 Difference]: With dead ends: 59494 [2020-10-28 10:33:25,294 INFO L226 Difference]: Without dead ends: 37675 [2020-10-28 10:33:25,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:33:25,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37675 states. [2020-10-28 10:33:26,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37675 to 35495. [2020-10-28 10:33:26,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35495 states. [2020-10-28 10:33:26,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35495 states to 35495 states and 42850 transitions. [2020-10-28 10:33:26,443 INFO L78 Accepts]: Start accepts. Automaton has 35495 states and 42850 transitions. Word has length 1094 [2020-10-28 10:33:26,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:33:26,444 INFO L481 AbstractCegarLoop]: Abstraction has 35495 states and 42850 transitions. [2020-10-28 10:33:26,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:33:26,445 INFO L276 IsEmpty]: Start isEmpty. Operand 35495 states and 42850 transitions. [2020-10-28 10:33:26,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1151 [2020-10-28 10:33:26,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:33:26,544 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:33:26,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 10:33:26,544 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:33:26,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:33:26,545 INFO L82 PathProgramCache]: Analyzing trace with hash -335744246, now seen corresponding path program 1 times [2020-10-28 10:33:26,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:33:26,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737296086] [2020-10-28 10:33:26,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:33:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:33:26,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:26,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:27,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:30,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:31,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:33:31,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1172 [2020-10-28 10:33:31,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:33:31,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5139 [2020-10-28 10:33:31,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:33:31,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:33:31,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:33:31,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 10:33:31,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 313 [2020-10-28 10:33:31,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:33:32,099 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:33:32,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:33:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:33:32,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:32,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:33:32,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:33:32,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:33:32,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:33:32,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:33:32,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:33:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:33:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:33:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:33:32,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:33:32,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:33:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:33:32,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:32,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:33:32,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 10:33:32,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:33:32,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 10:33:32,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:33:32,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:33:32,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:33:32,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:33:32,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 10:33:32,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:33:32,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 10:33:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:33:32,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:32,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:32,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:33:32,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-28 10:33:32,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:33:32,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-28 10:33:32,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:33:32,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:33:32,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:33:32,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:33:32,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 10:33:32,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:33:32,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-28 10:33:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:33:32,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:32,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:33:32,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 10:33:32,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:33:32,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-28 10:33:32,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:33:32,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:33:32,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:33:32,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:33:32,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-28 10:33:32,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:33:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 529 proven. 4 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-28 10:33:33,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737296086] [2020-10-28 10:33:33,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:33:33,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:33:33,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968909707] [2020-10-28 10:33:33,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:33:33,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:33:33,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:33:33,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:33:33,754 INFO L87 Difference]: Start difference. First operand 35495 states and 42850 transitions. Second operand 8 states. [2020-10-28 10:33:33,899 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 10:33:34,161 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:33:56,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:33:56,617 INFO L93 Difference]: Finished difference Result 123453 states and 155005 transitions. [2020-10-28 10:33:56,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:33:56,618 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1150 [2020-10-28 10:33:56,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:33:56,934 INFO L225 Difference]: With dead ends: 123453 [2020-10-28 10:33:56,935 INFO L226 Difference]: Without dead ends: 87968 [2020-10-28 10:33:57,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:33:57,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87968 states. [2020-10-28 10:33:59,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87968 to 80398. [2020-10-28 10:33:59,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80398 states. [2020-10-28 10:34:00,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80398 states to 80398 states and 101195 transitions. [2020-10-28 10:34:00,055 INFO L78 Accepts]: Start accepts. Automaton has 80398 states and 101195 transitions. Word has length 1150 [2020-10-28 10:34:00,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:34:00,056 INFO L481 AbstractCegarLoop]: Abstraction has 80398 states and 101195 transitions. [2020-10-28 10:34:00,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:34:00,057 INFO L276 IsEmpty]: Start isEmpty. Operand 80398 states and 101195 transitions. [2020-10-28 10:34:00,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1296 [2020-10-28 10:34:00,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:34:00,340 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:34:00,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 10:34:00,341 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:34:00,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:34:00,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1168234789, now seen corresponding path program 1 times [2020-10-28 10:34:00,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:34:00,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773085177] [2020-10-28 10:34:00,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:34:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:00,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:00,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:01,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:02,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:05,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:05,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1319 [2020-10-28 10:34:05,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:34:05,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 10:34:05,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:05,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:05,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:34:05,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 10:34:05,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 315 [2020-10-28 10:34:05,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:05,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:34:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:05,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:05,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:05,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:34:05,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:05,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 10:34:05,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:05,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:34:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:34:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:34:05,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:05,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:34:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:05,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:05,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:05,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 10:34:05,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:05,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 10:34:05,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:05,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:05,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:34:05,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:34:05,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 10:34:05,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:05,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 10:34:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:05,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:06,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:06,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-28 10:34:06,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:06,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-10-28 10:34:06,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:06,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:06,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:34:06,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:34:06,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 316 [2020-10-28 10:34:06,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:34:06,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 10:34:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:06,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:06,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:06,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 10:34:06,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:06,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-28 10:34:06,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:06,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 10:34:06,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:34:06,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 10:34:06,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:07,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-10-28 10:34:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:07,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:07,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:07,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 10:34:07,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:07,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 10:34:07,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:07,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:07,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:34:07,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-28 10:34:07,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:34:07,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:07,952 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 538 proven. 139 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-28 10:34:07,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773085177] [2020-10-28 10:34:07,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:34:07,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:34:07,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630405681] [2020-10-28 10:34:07,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:34:07,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:34:07,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:34:07,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:34:07,956 INFO L87 Difference]: Start difference. First operand 80398 states and 101195 transitions. Second operand 8 states. [2020-10-28 10:34:11,827 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-28 10:34:21,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:34:21,994 INFO L93 Difference]: Finished difference Result 184576 states and 236732 transitions. [2020-10-28 10:34:21,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:34:21,995 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1295 [2020-10-28 10:34:21,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:34:22,396 INFO L225 Difference]: With dead ends: 184576 [2020-10-28 10:34:22,396 INFO L226 Difference]: Without dead ends: 104188 [2020-10-28 10:34:22,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:34:23,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104188 states. [2020-10-28 10:34:25,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104188 to 102458. [2020-10-28 10:34:25,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102458 states. [2020-10-28 10:34:25,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102458 states to 102458 states and 125814 transitions. [2020-10-28 10:34:25,937 INFO L78 Accepts]: Start accepts. Automaton has 102458 states and 125814 transitions. Word has length 1295 [2020-10-28 10:34:25,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:34:25,937 INFO L481 AbstractCegarLoop]: Abstraction has 102458 states and 125814 transitions. [2020-10-28 10:34:25,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:34:25,938 INFO L276 IsEmpty]: Start isEmpty. Operand 102458 states and 125814 transitions. [2020-10-28 10:34:26,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1372 [2020-10-28 10:34:26,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:34:26,082 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:34:26,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 10:34:26,082 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:34:26,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:34:26,083 INFO L82 PathProgramCache]: Analyzing trace with hash -444307, now seen corresponding path program 1 times [2020-10-28 10:34:26,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:34:26,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165241578] [2020-10-28 10:34:26,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:34:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:26,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:26,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:27,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking...