/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/Problem16_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:25:22,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:25:22,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:25:23,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:25:23,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:25:23,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:25:23,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:25:23,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:25:23,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:25:23,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:25:23,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:25:23,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:25:23,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:25:23,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:25:23,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:25:23,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:25:23,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:25:23,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:25:23,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:25:23,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:25:23,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:25:23,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:25:23,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:25:23,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:25:23,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:25:23,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:25:23,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:25:23,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:25:23,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:25:23,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:25:23,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:25:23,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:25:23,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:25:23,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:25:23,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:25:23,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:25:23,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:25:23,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:25:23,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:25:23,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:25:23,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:25:23,114 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 13:25:23,140 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:25:23,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:25:23,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:25:23,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:25:23,142 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:25:23,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:25:23,143 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:25:23,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:25:23,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:25:23,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:25:23,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:25:23,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:25:23,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:25:23,144 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:25:23,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:25:23,144 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:25:23,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:25:23,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:25:23,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:25:23,145 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:25:23,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:25:23,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:25:23,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:25:23,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:25:23,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:25:23,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:25:23,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:25:23,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:25:23,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:25:23,148 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:25:23,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:25:23,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:25:23,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:25:23,614 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:25:23,615 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:25:23,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label41.c [2020-10-28 13:25:23,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9087b1570/97af0e2f23ea43d6a2042e869fb1becc/FLAG5671f287d [2020-10-28 13:25:24,548 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:25:24,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label41.c [2020-10-28 13:25:24,575 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9087b1570/97af0e2f23ea43d6a2042e869fb1becc/FLAG5671f287d [2020-10-28 13:25:24,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9087b1570/97af0e2f23ea43d6a2042e869fb1becc [2020-10-28 13:25:24,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:25:24,726 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:25:24,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:25:24,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:25:24,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:25:24,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:25:24" (1/1) ... [2020-10-28 13:25:24,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29d25613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:24, skipping insertion in model container [2020-10-28 13:25:24,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:25:24" (1/1) ... [2020-10-28 13:25:24,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:25:24,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:25:25,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:25:25,677 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:25:25,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:25:25,985 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:25:25,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:25 WrapperNode [2020-10-28 13:25:25,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:25:25,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:25:25,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:25:25,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:25:26,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:25" (1/1) ... [2020-10-28 13:25:26,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:25" (1/1) ... [2020-10-28 13:25:26,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:25" (1/1) ... [2020-10-28 13:25:26,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:25" (1/1) ... [2020-10-28 13:25:26,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:25" (1/1) ... [2020-10-28 13:25:26,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:25" (1/1) ... [2020-10-28 13:25:26,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:25" (1/1) ... [2020-10-28 13:25:26,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:25:26,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:25:26,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:25:26,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:25:26,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:25" (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 13:25:26,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:25:26,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:25:26,292 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:25:26,293 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:25:26,293 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:25:26,293 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:25:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:25:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:25:26,294 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:25:26,294 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:25:26,294 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:25:26,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:25:26,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:25:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:25:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:25:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:25:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:25:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:25:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:25:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:25:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:25:28,804 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:25:28,805 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:25:28,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:25:28 BoogieIcfgContainer [2020-10-28 13:25:28,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:25:28,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:25:28,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:25:28,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:25:28,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:25:24" (1/3) ... [2020-10-28 13:25:28,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5414ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:25:28, skipping insertion in model container [2020-10-28 13:25:28,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:25" (2/3) ... [2020-10-28 13:25:28,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5414ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:25:28, skipping insertion in model container [2020-10-28 13:25:28,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:25:28" (3/3) ... [2020-10-28 13:25:28,818 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label41.c [2020-10-28 13:25:28,833 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:25:28,839 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:25:28,865 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:25:28,900 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:25:28,900 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:25:28,900 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:25:28,900 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:25:28,900 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:25:28,900 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:25:28,901 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:25:28,901 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:25:28,930 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-28 13:25:28,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 13:25:28,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:25:28,939 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] [2020-10-28 13:25:28,940 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:25:28,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:25:28,947 INFO L82 PathProgramCache]: Analyzing trace with hash -2037616244, now seen corresponding path program 1 times [2020-10-28 13:25:28,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:25:28,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347802719] [2020-10-28 13:25:28,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:25:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:29,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:29,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:29,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 13:25:29,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:29,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 563 [2020-10-28 13:25:29,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:29,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:29,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:25:29,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:25:29,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 13:25:29,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:25:29,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:25:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:29,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:29,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:29,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:25:29,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:29,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:25:29,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:29,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:29,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:25:29,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:29,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:25:29,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:25:29,884 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 13:25:29,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347802719] [2020-10-28 13:25:29,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:25:29,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:25:29,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999980075] [2020-10-28 13:25:29,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:25:29,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:25:29,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:25:29,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:25:29,913 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-28 13:25:34,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:25:34,288 INFO L93 Difference]: Finished difference Result 1174 states and 2171 transitions. [2020-10-28 13:25:34,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:25:34,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-28 13:25:34,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:25:34,340 INFO L225 Difference]: With dead ends: 1174 [2020-10-28 13:25:34,341 INFO L226 Difference]: Without dead ends: 697 [2020-10-28 13:25:34,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:25:34,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-28 13:25:34,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 690. [2020-10-28 13:25:34,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-28 13:25:34,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1078 transitions. [2020-10-28 13:25:34,486 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1078 transitions. Word has length 30 [2020-10-28 13:25:34,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:25:34,488 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 1078 transitions. [2020-10-28 13:25:34,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:25:34,488 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1078 transitions. [2020-10-28 13:25:34,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 13:25:34,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:25:34,498 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:25:34,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:25:34,499 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:25:34,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:25:34,501 INFO L82 PathProgramCache]: Analyzing trace with hash 731523570, now seen corresponding path program 1 times [2020-10-28 13:25:34,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:25:34,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016585199] [2020-10-28 13:25:34,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:25:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:34,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:35,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:35,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:35,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 13:25:35,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:25:35,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1139 [2020-10-28 13:25:35,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:35,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:35,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:25:35,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:25:35,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:25:35,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:25:35,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:25:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:35,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:35,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:35,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:25:35,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:35,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:25:35,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:35,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:35,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:25:35,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:35,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:25:35,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:25:35,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:25:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:35,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:36,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:36,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:25:36,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:36,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 13:25:36,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:36,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:36,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:25:36,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:25:36,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:25:36,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:36,204 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:25:36,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016585199] [2020-10-28 13:25:36,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:25:36,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:25:36,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875857551] [2020-10-28 13:25:36,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:25:36,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:25:36,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:25:36,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:25:36,215 INFO L87 Difference]: Start difference. First operand 690 states and 1078 transitions. Second operand 7 states. [2020-10-28 13:25:41,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:25:41,371 INFO L93 Difference]: Finished difference Result 1741 states and 2664 transitions. [2020-10-28 13:25:41,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:25:41,372 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-10-28 13:25:41,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:25:41,381 INFO L225 Difference]: With dead ends: 1741 [2020-10-28 13:25:41,382 INFO L226 Difference]: Without dead ends: 1057 [2020-10-28 13:25:41,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:25:41,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2020-10-28 13:25:41,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1042. [2020-10-28 13:25:41,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2020-10-28 13:25:41,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1495 transitions. [2020-10-28 13:25:41,483 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1495 transitions. Word has length 105 [2020-10-28 13:25:41,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:25:41,484 INFO L481 AbstractCegarLoop]: Abstraction has 1042 states and 1495 transitions. [2020-10-28 13:25:41,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:25:41,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1495 transitions. [2020-10-28 13:25:41,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 13:25:41,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:25:41,495 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:25:41,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:25:41,495 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:25:41,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:25:41,496 INFO L82 PathProgramCache]: Analyzing trace with hash 896222636, now seen corresponding path program 1 times [2020-10-28 13:25:41,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:25:41,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152137334] [2020-10-28 13:25:41,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:25:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:41,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:41,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:42,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:42,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 13:25:42,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:25:42,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 859 [2020-10-28 13:25:42,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:42,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:42,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:25:42,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:25:42,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:25:42,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:42,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:25:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:42,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:42,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:42,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:25:42,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:42,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:25:42,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:42,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:42,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:25:42,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:42,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:25:42,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:42,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:25:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:42,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:42,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:42,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:25:42,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:42,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 13:25:42,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:42,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:42,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:25:42,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:25:42,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:25:42,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:42,788 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:25:42,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152137334] [2020-10-28 13:25:42,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:25:42,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:25:42,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605308335] [2020-10-28 13:25:42,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:25:42,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:25:42,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:25:42,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:25:42,792 INFO L87 Difference]: Start difference. First operand 1042 states and 1495 transitions. Second operand 7 states. [2020-10-28 13:25:48,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:25:48,262 INFO L93 Difference]: Finished difference Result 3168 states and 4637 transitions. [2020-10-28 13:25:48,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:25:48,264 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2020-10-28 13:25:48,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:25:48,278 INFO L225 Difference]: With dead ends: 3168 [2020-10-28 13:25:48,279 INFO L226 Difference]: Without dead ends: 2132 [2020-10-28 13:25:48,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:25:48,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2020-10-28 13:25:48,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 2091. [2020-10-28 13:25:48,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2091 states. [2020-10-28 13:25:48,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2091 states to 2091 states and 2718 transitions. [2020-10-28 13:25:48,363 INFO L78 Accepts]: Start accepts. Automaton has 2091 states and 2718 transitions. Word has length 106 [2020-10-28 13:25:48,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:25:48,363 INFO L481 AbstractCegarLoop]: Abstraction has 2091 states and 2718 transitions. [2020-10-28 13:25:48,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:25:48,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states and 2718 transitions. [2020-10-28 13:25:48,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-28 13:25:48,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:25:48,365 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:25:48,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:25:48,366 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:25:48,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:25:48,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1877364690, now seen corresponding path program 1 times [2020-10-28 13:25:48,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:25:48,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853448205] [2020-10-28 13:25:48,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:25:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:48,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:48,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:48,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 13:25:48,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:48,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-28 13:25:48,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:48,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:48,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:25:48,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:25:48,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 13:25:48,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:48,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:25:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:48,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:48,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:48,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:25:48,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:48,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:25:48,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:48,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:48,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:48,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:25:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:48,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:49,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:49,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:25:49,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:49,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:25:49,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:49,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:49,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:25:49,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:49,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:25:49,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:49,071 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:25:49,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853448205] [2020-10-28 13:25:49,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:25:49,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:25:49,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831263985] [2020-10-28 13:25:49,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:25:49,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:25:49,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:25:49,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:25:49,074 INFO L87 Difference]: Start difference. First operand 2091 states and 2718 transitions. Second operand 6 states. [2020-10-28 13:25:56,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:25:56,415 INFO L93 Difference]: Finished difference Result 5579 states and 7674 transitions. [2020-10-28 13:25:56,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:25:56,416 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2020-10-28 13:25:56,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:25:56,436 INFO L225 Difference]: With dead ends: 5579 [2020-10-28 13:25:56,436 INFO L226 Difference]: Without dead ends: 3494 [2020-10-28 13:25:56,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:25:56,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3494 states. [2020-10-28 13:25:56,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3494 to 3483. [2020-10-28 13:25:56,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3483 states. [2020-10-28 13:25:56,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3483 states to 3483 states and 4588 transitions. [2020-10-28 13:25:56,554 INFO L78 Accepts]: Start accepts. Automaton has 3483 states and 4588 transitions. Word has length 121 [2020-10-28 13:25:56,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:25:56,554 INFO L481 AbstractCegarLoop]: Abstraction has 3483 states and 4588 transitions. [2020-10-28 13:25:56,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:25:56,555 INFO L276 IsEmpty]: Start isEmpty. Operand 3483 states and 4588 transitions. [2020-10-28 13:25:56,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2020-10-28 13:25:56,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:25:56,569 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:25:56,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:25:56,570 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:25:56,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:25:56,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1226096928, now seen corresponding path program 1 times [2020-10-28 13:25:56,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:25:56,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996459174] [2020-10-28 13:25:56,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:25:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:56,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:56,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:57,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:58,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:59,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:01,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:01,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-28 13:26:01,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:26:01,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 13:26:01,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:01,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:01,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:26:01,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:26:01,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 370 [2020-10-28 13:26:01,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:01,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:26:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:01,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:01,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:01,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:26:01,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:01,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:26:01,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:01,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:01,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:26:01,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:26:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:02,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:02,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:02,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:26:02,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:02,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 13:26:02,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:02,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:02,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:26:02,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:02,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:26:02,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:26:02,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:26:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:02,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:02,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:02,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:02,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:26:02,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:26:02,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 755 [2020-10-28 13:26:02,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:02,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:02,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:26:02,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:26:02,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:26:02,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:26:03,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-28 13:26:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:03,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:03,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:03,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:26:03,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:03,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-28 13:26:03,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:03,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:03,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:26:03,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:26:03,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 13:26:03,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:03,916 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 242 proven. 91 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 13:26:03,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996459174] [2020-10-28 13:26:03,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:26:03,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 13:26:03,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312490640] [2020-10-28 13:26:03,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 13:26:03,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:26:03,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 13:26:03,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-28 13:26:03,920 INFO L87 Difference]: Start difference. First operand 3483 states and 4588 transitions. Second operand 9 states. [2020-10-28 13:26:10,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:26:10,070 INFO L93 Difference]: Finished difference Result 9056 states and 12260 transitions. [2020-10-28 13:26:10,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:26:10,071 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 486 [2020-10-28 13:26:10,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:26:10,098 INFO L225 Difference]: With dead ends: 9056 [2020-10-28 13:26:10,099 INFO L226 Difference]: Without dead ends: 4851 [2020-10-28 13:26:10,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-10-28 13:26:10,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4851 states. [2020-10-28 13:26:10,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4851 to 4153. [2020-10-28 13:26:10,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4153 states. [2020-10-28 13:26:10,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4153 states to 4153 states and 4658 transitions. [2020-10-28 13:26:10,228 INFO L78 Accepts]: Start accepts. Automaton has 4153 states and 4658 transitions. Word has length 486 [2020-10-28 13:26:10,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:26:10,228 INFO L481 AbstractCegarLoop]: Abstraction has 4153 states and 4658 transitions. [2020-10-28 13:26:10,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 13:26:10,228 INFO L276 IsEmpty]: Start isEmpty. Operand 4153 states and 4658 transitions. [2020-10-28 13:26:10,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2020-10-28 13:26:10,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:26:10,250 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 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, 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, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 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] [2020-10-28 13:26:10,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:26:10,251 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:26:10,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:26:10,252 INFO L82 PathProgramCache]: Analyzing trace with hash 408933938, now seen corresponding path program 1 times [2020-10-28 13:26:10,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:26:10,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809719882] [2020-10-28 13:26:10,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:26:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:10,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:10,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:10,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:11,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:15,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:15,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 719 [2020-10-28 13:26:15,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:26:15,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-28 13:26:15,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:15,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:15,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:26:15,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:26:15,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:26:15,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:15,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:26:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:15,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:15,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:15,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:26:15,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:15,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:26:15,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:15,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:15,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:15,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:26:15,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:26:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:15,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:15,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:15,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:26:15,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:15,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 13:26:15,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:15,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:15,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:26:15,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:15,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:26:15,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:15,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 13:26:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:15,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:16,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:16,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:26:16,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:16,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-28 13:26:16,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:16,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:16,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:26:16,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:26:16,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:26:16,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:16,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-28 13:26:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:16,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:16,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:16,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:26:16,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:16,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 13:26:16,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:16,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:16,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:16,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:26:16,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:16,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:16,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-28 13:26:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:16,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:16,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:16,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:26:16,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:16,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 13:26:16,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:16,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:16,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:16,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:26:16,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:16,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:16,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-28 13:26:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:16,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:16,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:16,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-28 13:26:16,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:16,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 13:26:16,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:16,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:16,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:16,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-28 13:26:16,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:16,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:17,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 219 proven. 347 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2020-10-28 13:26:17,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809719882] [2020-10-28 13:26:17,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:26:17,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:26:17,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525468895] [2020-10-28 13:26:17,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:26:17,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:26:17,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:26:17,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:26:17,231 INFO L87 Difference]: Start difference. First operand 4153 states and 4658 transitions. Second operand 8 states. [2020-10-28 13:26:23,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:26:23,304 INFO L93 Difference]: Finished difference Result 12057 states and 13775 transitions. [2020-10-28 13:26:23,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:26:23,306 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 699 [2020-10-28 13:26:23,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:26:23,345 INFO L225 Difference]: With dead ends: 12057 [2020-10-28 13:26:23,345 INFO L226 Difference]: Without dead ends: 7910 [2020-10-28 13:26:23,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:26:23,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7910 states. [2020-10-28 13:26:23,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7910 to 7232. [2020-10-28 13:26:23,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7232 states. [2020-10-28 13:26:23,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7232 states to 7232 states and 8013 transitions. [2020-10-28 13:26:23,571 INFO L78 Accepts]: Start accepts. Automaton has 7232 states and 8013 transitions. Word has length 699 [2020-10-28 13:26:23,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:26:23,573 INFO L481 AbstractCegarLoop]: Abstraction has 7232 states and 8013 transitions. [2020-10-28 13:26:23,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:26:23,573 INFO L276 IsEmpty]: Start isEmpty. Operand 7232 states and 8013 transitions. [2020-10-28 13:26:23,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1035 [2020-10-28 13:26:23,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:26:23,630 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:26:23,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:26:23,632 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:26:23,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:26:23,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1670564108, now seen corresponding path program 1 times [2020-10-28 13:26:23,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:26:23,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724301768] [2020-10-28 13:26:23,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:26:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:24,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:24,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:25,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:26,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:28,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:28,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1056 [2020-10-28 13:26:28,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:26:28,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-28 13:26:28,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:28,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:26:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 625 [2020-10-28 13:26:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 303 [2020-10-28 13:26:28,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:29,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:26:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:29,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:29,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:29,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:26:29,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:29,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:26:29,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:29,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:29,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:29,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:29,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:29,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:29,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:26:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:29,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:29,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:29,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:26:29,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:29,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 13:26:29,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:29,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:29,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:29,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:29,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:29,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:29,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:26:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:29,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:29,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:29,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:26:29,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:29,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 13:26:29,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:29,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:29,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:29,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:29,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:29,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:29,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-28 13:26:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:29,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:29,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:29,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:26:29,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:29,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 13:26:29,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:29,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:29,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:26:29,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:29,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:26:29,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:29,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2020-10-28 13:26:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:29,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:30,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:30,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-28 13:26:30,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:30,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-10-28 13:26:30,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:30,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:30,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:26:30,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:26:30,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 304 [2020-10-28 13:26:30,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:30,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:26:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:30,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:30,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:30,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 13:26:30,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:30,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:26:30,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:30,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:30,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:26:30,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:26:30,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:26:30,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:30,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 920 [2020-10-28 13:26:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:30,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:30,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:30,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:26:30,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:30,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:26:30,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:30,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:30,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:30,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 13:26:30,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:30,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:31,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1566 backedges. 734 proven. 91 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2020-10-28 13:26:31,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724301768] [2020-10-28 13:26:31,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:26:31,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 13:26:31,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774648214] [2020-10-28 13:26:31,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 13:26:31,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:26:31,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 13:26:31,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-28 13:26:31,981 INFO L87 Difference]: Start difference. First operand 7232 states and 8013 transitions. Second operand 9 states. [2020-10-28 13:26:36,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:26:36,391 INFO L93 Difference]: Finished difference Result 16321 states and 18889 transitions. [2020-10-28 13:26:36,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 13:26:36,392 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1034 [2020-10-28 13:26:36,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:26:36,446 INFO L225 Difference]: With dead ends: 16321 [2020-10-28 13:26:36,446 INFO L226 Difference]: Without dead ends: 9432 [2020-10-28 13:26:36,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-28 13:26:36,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9432 states. [2020-10-28 13:26:36,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9432 to 9274. [2020-10-28 13:26:36,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9274 states. [2020-10-28 13:26:36,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9274 states to 9274 states and 10181 transitions. [2020-10-28 13:26:36,741 INFO L78 Accepts]: Start accepts. Automaton has 9274 states and 10181 transitions. Word has length 1034 [2020-10-28 13:26:36,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:26:36,743 INFO L481 AbstractCegarLoop]: Abstraction has 9274 states and 10181 transitions. [2020-10-28 13:26:36,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 13:26:36,743 INFO L276 IsEmpty]: Start isEmpty. Operand 9274 states and 10181 transitions. [2020-10-28 13:26:36,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1132 [2020-10-28 13:26:36,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:26:36,771 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:26:36,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:26:36,771 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:26:36,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:26:36,772 INFO L82 PathProgramCache]: Analyzing trace with hash 2054890922, now seen corresponding path program 1 times [2020-10-28 13:26:36,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:26:36,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988263235] [2020-10-28 13:26:36,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:26:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:37,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:37,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:37,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:40,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:42,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:42,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1155 [2020-10-28 13:26:42,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:26:42,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-28 13:26:42,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:42,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:42,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:26:42,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 724 [2020-10-28 13:26:42,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 303 [2020-10-28 13:26:42,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:42,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:26:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:42,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:42,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:42,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:26:42,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:42,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:26:42,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:42,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:42,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:42,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:42,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:42,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:42,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:26:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:42,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:42,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:42,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:26:42,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:42,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 13:26:42,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:42,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:42,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:42,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:42,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:42,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:42,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:26:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:42,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:42,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:42,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:26:42,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:42,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:26:42,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:42,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:42,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:42,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:42,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:42,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:42,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:26:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:42,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:42,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:42,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:26:42,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:42,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:26:42,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:42,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:42,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:42,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:42,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:42,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:42,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2020-10-28 13:26:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:42,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:43,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:43,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:26:43,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:43,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-28 13:26:43,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:43,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:43,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:26:43,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:43,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 13:26:43,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:43,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-28 13:26:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:43,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:43,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:43,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-28 13:26:43,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:43,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-28 13:26:43,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:43,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:43,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:26:43,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:26:43,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 304 [2020-10-28 13:26:43,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:43,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:26:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:43,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:43,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:43,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 13:26:43,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:43,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:26:43,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:43,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:43,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:26:43,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:26:43,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:26:43,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:43,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1017 [2020-10-28 13:26:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:43,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:43,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:43,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:26:43,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:43,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:26:43,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:43,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:43,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:43,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 13:26:43,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:43,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:44,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2219 backedges. 859 proven. 91 refuted. 0 times theorem prover too weak. 1269 trivial. 0 not checked. [2020-10-28 13:26:44,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988263235] [2020-10-28 13:26:44,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:26:44,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:26:44,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859042447] [2020-10-28 13:26:44,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:26:44,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:26:44,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:26:44,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:26:44,617 INFO L87 Difference]: Start difference. First operand 9274 states and 10181 transitions. Second operand 7 states. [2020-10-28 13:26:49,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:26:49,102 INFO L93 Difference]: Finished difference Result 19906 states and 22064 transitions. [2020-10-28 13:26:49,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:26:49,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1131 [2020-10-28 13:26:49,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:26:49,148 INFO L225 Difference]: With dead ends: 19906 [2020-10-28 13:26:49,149 INFO L226 Difference]: Without dead ends: 10975 [2020-10-28 13:26:49,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:26:49,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10975 states. [2020-10-28 13:26:49,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10975 to 10289. [2020-10-28 13:26:49,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10289 states. [2020-10-28 13:26:49,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10289 states to 10289 states and 11086 transitions. [2020-10-28 13:26:49,387 INFO L78 Accepts]: Start accepts. Automaton has 10289 states and 11086 transitions. Word has length 1131 [2020-10-28 13:26:49,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:26:49,389 INFO L481 AbstractCegarLoop]: Abstraction has 10289 states and 11086 transitions. [2020-10-28 13:26:49,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:26:49,389 INFO L276 IsEmpty]: Start isEmpty. Operand 10289 states and 11086 transitions. [2020-10-28 13:26:49,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1555 [2020-10-28 13:26:49,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:26:49,431 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 3, 3, 3, 3, 3, 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] [2020-10-28 13:26:49,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:26:49,431 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:26:49,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:26:49,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1351289776, now seen corresponding path program 1 times [2020-10-28 13:26:49,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:26:49,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100725220] [2020-10-28 13:26:49,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:26:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:49,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:50,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:51,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:53,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:54,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:54,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1578 [2020-10-28 13:26:54,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:26:54,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-28 13:26:54,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:54,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:54,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:26:54,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 705 [2020-10-28 13:26:54,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:26:54,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:55,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:26:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:55,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:55,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:55,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:26:55,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:55,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:26:55,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:55,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:55,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:55,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:55,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:55,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:55,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:26:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:55,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:55,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:55,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:26:55,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:55,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 13:26:55,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:55,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:55,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:55,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:55,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:55,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:55,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:26:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:55,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:55,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:55,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:26:55,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:55,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:26:55,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:55,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:55,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:55,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:55,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:55,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:55,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-28 13:26:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:55,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:55,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:55,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:26:55,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:55,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 13:26:55,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:55,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:55,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:26:55,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:55,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-28 13:26:55,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:55,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-10-28 13:26:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:55,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:55,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:55,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:26:55,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:55,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-28 13:26:55,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:55,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:55,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:26:55,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:26:55,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:26:55,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:56,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 972 [2020-10-28 13:26:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:56,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:56,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:56,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-28 13:26:56,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:56,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 13:26:56,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:56,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:56,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:56,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-28 13:26:56,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:56,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:56,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1237 [2020-10-28 13:26:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:56,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:56,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:56,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-28 13:26:56,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:56,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-28 13:26:56,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:56,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:56,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:56,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-28 13:26:56,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:56,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:56,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:26:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:56,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:56,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:56,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 13:26:56,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:56,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:26:56,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:56,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:56,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:56,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:56,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:56,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:59,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3645 backedges. 848 proven. 534 refuted. 0 times theorem prover too weak. 2263 trivial. 0 not checked. [2020-10-28 13:26:59,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100725220] [2020-10-28 13:26:59,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:26:59,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:26:59,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441385458] [2020-10-28 13:26:59,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:26:59,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:26:59,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:26:59,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:26:59,212 INFO L87 Difference]: Start difference. First operand 10289 states and 11086 transitions. Second operand 7 states. [2020-10-28 13:27:03,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:27:03,337 INFO L93 Difference]: Finished difference Result 20247 states and 21844 transitions. [2020-10-28 13:27:03,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:27:03,338 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1554 [2020-10-28 13:27:03,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:27:03,370 INFO L225 Difference]: With dead ends: 20247 [2020-10-28 13:27:03,370 INFO L226 Difference]: Without dead ends: 10301 [2020-10-28 13:27:03,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:27:03,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10301 states. [2020-10-28 13:27:03,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10301 to 10291. [2020-10-28 13:27:03,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10291 states. [2020-10-28 13:27:03,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10291 states to 10291 states and 11085 transitions. [2020-10-28 13:27:03,603 INFO L78 Accepts]: Start accepts. Automaton has 10291 states and 11085 transitions. Word has length 1554 [2020-10-28 13:27:03,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:27:03,604 INFO L481 AbstractCegarLoop]: Abstraction has 10291 states and 11085 transitions. [2020-10-28 13:27:03,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:27:03,605 INFO L276 IsEmpty]: Start isEmpty. Operand 10291 states and 11085 transitions. [2020-10-28 13:27:03,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1715 [2020-10-28 13:27:03,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:27:03,646 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-28 13:27:03,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:27:03,647 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:27:03,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:27:03,648 INFO L82 PathProgramCache]: Analyzing trace with hash -220215040, now seen corresponding path program 1 times [2020-10-28 13:27:03,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:27:03,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192267390] [2020-10-28 13:27:03,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:27:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:04,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:04,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:04,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:05,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:05,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:05,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:09,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:09,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1742 [2020-10-28 13:27:09,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:27:09,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5099 [2020-10-28 13:27:09,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:09,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:09,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:09,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 869 [2020-10-28 13:27:09,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:27:09,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:09,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:27:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:09,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:09,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:09,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:27:09,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:09,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:27:09,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:09,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:09,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:09,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:09,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:09,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:09,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:27:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:09,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:09,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:09,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:27:09,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:09,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:27:09,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:09,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:09,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:09,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:09,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:09,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:09,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:27:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:09,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:09,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:09,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:27:09,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:09,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 13:27:09,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:09,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:09,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:09,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:09,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:09,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:09,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-28 13:27:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:09,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:09,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:09,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:27:09,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:09,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:27:09,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:09,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:09,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:09,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:09,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:09,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:09,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-28 13:27:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:09,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:09,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:09,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:27:09,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:09,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:27:09,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:09,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:09,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:09,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:09,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:09,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:09,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2020-10-28 13:27:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:09,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:09,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:09,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:27:09,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:09,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 13:27:09,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:09,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:09,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:27:09,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:09,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-28 13:27:09,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:09,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-10-28 13:27:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:10,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:10,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:10,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:27:10,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:10,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-28 13:27:10,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:10,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:10,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:10,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:10,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:27:10,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:10,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1132 [2020-10-28 13:27:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:10,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:10,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:10,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-28 13:27:10,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:10,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 13:27:10,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:10,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:10,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:10,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-28 13:27:10,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:10,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:10,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1397 [2020-10-28 13:27:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:10,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:11,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:11,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-28 13:27:11,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:11,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 13:27:11,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:11,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:11,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:11,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-28 13:27:11,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:11,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:11,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:27:11,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:11,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:11,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:11,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 13:27:11,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:11,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:27:11,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:11,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:11,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:11,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:14,181 INFO L134 CoverageAnalysis]: Checked inductivity of 4769 backedges. 1072 proven. 534 refuted. 0 times theorem prover too weak. 3163 trivial. 0 not checked. [2020-10-28 13:27:14,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192267390] [2020-10-28 13:27:14,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:27:14,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:27:14,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607708335] [2020-10-28 13:27:14,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:27:14,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:27:14,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:27:14,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:27:14,185 INFO L87 Difference]: Start difference. First operand 10291 states and 11085 transitions. Second operand 8 states. [2020-10-28 13:27:19,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:27:19,798 INFO L93 Difference]: Finished difference Result 21934 states and 23686 transitions. [2020-10-28 13:27:19,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:27:19,799 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1714 [2020-10-28 13:27:19,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:27:19,831 INFO L225 Difference]: With dead ends: 21934 [2020-10-28 13:27:19,832 INFO L226 Difference]: Without dead ends: 11986 [2020-10-28 13:27:19,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-28 13:27:19,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11986 states. [2020-10-28 13:27:20,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11986 to 10971. [2020-10-28 13:27:20,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10971 states. [2020-10-28 13:27:20,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10971 states to 10971 states and 11824 transitions. [2020-10-28 13:27:20,082 INFO L78 Accepts]: Start accepts. Automaton has 10971 states and 11824 transitions. Word has length 1714 [2020-10-28 13:27:20,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:27:20,083 INFO L481 AbstractCegarLoop]: Abstraction has 10971 states and 11824 transitions. [2020-10-28 13:27:20,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:27:20,083 INFO L276 IsEmpty]: Start isEmpty. Operand 10971 states and 11824 transitions. [2020-10-28 13:27:20,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1733 [2020-10-28 13:27:20,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:27:20,136 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 3, 3, 3, 3, 3, 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] [2020-10-28 13:27:20,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:27:20,137 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:27:20,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:27:20,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1121156932, now seen corresponding path program 1 times [2020-10-28 13:27:20,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:27:20,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543178813] [2020-10-28 13:27:20,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:27:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:20,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:21,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:21,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:22,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:22,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:22,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:23,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:25,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:25,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1760 [2020-10-28 13:27:25,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 13:27:25,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 13:27:25,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:25,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:25,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:25,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 887 [2020-10-28 13:27:25,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:27:25,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:25,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:27:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:25,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:25,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:25,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:27:25,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:25,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:27:25,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:25,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:25,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:25,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:27:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:25,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:25,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:25,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:27:25,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:25,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:27:25,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:25,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:25,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:25,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:25,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:27:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:26,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:26,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:26,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:27:26,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:26,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 13:27:26,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:26,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:26,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:26,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:26,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:26,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:26,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-28 13:27:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:26,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:26,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:26,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:27:26,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:26,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:27:26,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:26,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:26,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:26,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:26,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:26,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:26,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-10-28 13:27:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:26,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:26,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:26,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:27:26,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:26,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:27:26,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:26,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:26,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:26,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:26,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:26,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:26,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 689 [2020-10-28 13:27:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:26,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:26,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:26,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 13:27:26,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:26,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 13:27:26,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:26,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:26,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:27:26,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:26,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-28 13:27:26,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:26,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 877 [2020-10-28 13:27:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:26,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:26,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:26,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:27:26,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:26,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-28 13:27:26,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:26,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:27:26,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:26,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1150 [2020-10-28 13:27:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:27,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:27,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:27,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-28 13:27:27,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:27,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 13:27:27,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:27,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:27,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:27,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-28 13:27:27,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:27,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:27,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1415 [2020-10-28 13:27:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:27,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:27,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:27,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-28 13:27:27,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:27,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 13:27:27,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:27,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:27,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:27,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-28 13:27:27,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:27,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:27,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:27:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:27,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:27,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:27,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 13:27:27,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:27,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:27:27,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:27,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:27,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:27,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:27,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:27,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:29,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4834 backedges. 1090 proven. 534 refuted. 0 times theorem prover too weak. 3210 trivial. 0 not checked. [2020-10-28 13:27:29,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543178813] [2020-10-28 13:27:29,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:27:29,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:27:29,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013142409] [2020-10-28 13:27:29,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:27:29,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:27:29,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:27:29,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:27:29,194 INFO L87 Difference]: Start difference. First operand 10971 states and 11824 transitions. Second operand 7 states. [2020-10-28 13:27:33,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:27:33,680 INFO L93 Difference]: Finished difference Result 23649 states and 25557 transitions. [2020-10-28 13:27:33,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:27:33,682 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1732 [2020-10-28 13:27:33,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:27:33,725 INFO L225 Difference]: With dead ends: 23649 [2020-10-28 13:27:33,725 INFO L226 Difference]: Without dead ends: 13021 [2020-10-28 13:27:33,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:27:33,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13021 states. [2020-10-28 13:27:33,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13021 to 12670. [2020-10-28 13:27:33,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12670 states. [2020-10-28 13:27:34,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12670 states to 12670 states and 13698 transitions. [2020-10-28 13:27:34,012 INFO L78 Accepts]: Start accepts. Automaton has 12670 states and 13698 transitions. Word has length 1732 [2020-10-28 13:27:34,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:27:34,014 INFO L481 AbstractCegarLoop]: Abstraction has 12670 states and 13698 transitions. [2020-10-28 13:27:34,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:27:34,014 INFO L276 IsEmpty]: Start isEmpty. Operand 12670 states and 13698 transitions. [2020-10-28 13:27:34,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1761 [2020-10-28 13:27:34,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:27:34,064 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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] [2020-10-28 13:27:34,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:27:34,064 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:27:34,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:27:34,065 INFO L82 PathProgramCache]: Analyzing trace with hash -494646020, now seen corresponding path program 1 times [2020-10-28 13:27:34,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:27:34,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203624992] [2020-10-28 13:27:34,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:27:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:34,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:34,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:35,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:35,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:36,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:37,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:37,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:39,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:39,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:39,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1790 [2020-10-28 13:27:39,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 13:27:39,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-28 13:27:39,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:39,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:39,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:27:39,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 887 [2020-10-28 13:27:39,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 303 [2020-10-28 13:27:39,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:39,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:27:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:39,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:39,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:39,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:27:39,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:39,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:27:39,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:39,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:39,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:39,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:39,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:39,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:39,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:27:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:39,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:39,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:39,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:27:39,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:39,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 13:27:39,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:39,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:39,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:39,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:39,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:39,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:39,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:27:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:39,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:39,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:39,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:27:39,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:39,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 13:27:39,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:39,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:39,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:39,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:39,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:39,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:40,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-28 13:27:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:40,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:40,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:40,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:27:40,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:40,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:27:40,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:40,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:40,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:40,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:40,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:40,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:40,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-10-28 13:27:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:40,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:40,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:40,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:27:40,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:40,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:27:40,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:40,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:40,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:40,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:40,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:40,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:40,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 689 [2020-10-28 13:27:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:40,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:40,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:40,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 13:27:40,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:40,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 13:27:40,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:40,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:40,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:27:40,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:40,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-28 13:27:40,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:40,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 877 [2020-10-28 13:27:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:40,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:40,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:40,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-28 13:27:40,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:40,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-28 13:27:40,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:40,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:40,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:27:40,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:40,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 304 [2020-10-28 13:27:40,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:40,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:27:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:40,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:40,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:40,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 13:27:40,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:40,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:27:40,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:40,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:40,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:27:40,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:40,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:27:40,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:40,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1178 [2020-10-28 13:27:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:41,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:41,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:41,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-28 13:27:41,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:41,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 13:27:41,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:41,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:41,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:41,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-28 13:27:41,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:41,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:41,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1443 [2020-10-28 13:27:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:41,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:41,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:41,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-28 13:27:41,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:41,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-28 13:27:41,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:41,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:41,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:41,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-28 13:27:41,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:41,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:41,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:27:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:41,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:41,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:41,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 13:27:41,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:41,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:27:41,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:41,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:41,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:41,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:41,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:41,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:43,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4856 backedges. 1090 proven. 555 refuted. 0 times theorem prover too weak. 3211 trivial. 0 not checked. [2020-10-28 13:27:43,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203624992] [2020-10-28 13:27:43,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:27:43,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:27:43,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349244584] [2020-10-28 13:27:43,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:27:43,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:27:43,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:27:43,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:27:43,166 INFO L87 Difference]: Start difference. First operand 12670 states and 13698 transitions. Second operand 8 states. [2020-10-28 13:27:48,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:27:48,095 INFO L93 Difference]: Finished difference Result 32471 states and 35437 transitions. [2020-10-28 13:27:48,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:27:48,096 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1760 [2020-10-28 13:27:48,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:27:48,143 INFO L225 Difference]: With dead ends: 32471 [2020-10-28 13:27:48,143 INFO L226 Difference]: Without dead ends: 20144 [2020-10-28 13:27:48,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-28 13:27:48,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20144 states. [2020-10-28 13:27:48,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20144 to 19125. [2020-10-28 13:27:48,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19125 states. [2020-10-28 13:27:48,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19125 states to 19125 states and 20862 transitions. [2020-10-28 13:27:48,547 INFO L78 Accepts]: Start accepts. Automaton has 19125 states and 20862 transitions. Word has length 1760 [2020-10-28 13:27:48,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:27:48,549 INFO L481 AbstractCegarLoop]: Abstraction has 19125 states and 20862 transitions. [2020-10-28 13:27:48,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:27:48,549 INFO L276 IsEmpty]: Start isEmpty. Operand 19125 states and 20862 transitions. [2020-10-28 13:27:48,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1817 [2020-10-28 13:27:48,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:27:48,610 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 3, 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] [2020-10-28 13:27:48,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:27:48,611 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:27:48,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:27:48,612 INFO L82 PathProgramCache]: Analyzing trace with hash -2132501892, now seen corresponding path program 1 times [2020-10-28 13:27:48,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:27:48,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93355469] [2020-10-28 13:27:48,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:27:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:49,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:49,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:49,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:49,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:50,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:50,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:53,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:53,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1846 [2020-10-28 13:27:53,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:27:53,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 13:27:53,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:53,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:53,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:53,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 949 [2020-10-28 13:27:53,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:27:53,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:54,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:27:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:54,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:54,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:54,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:27:54,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:54,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:27:54,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:54,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:54,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:54,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:54,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:54,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:54,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:27:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:54,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:54,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:54,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:27:54,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:54,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:27:54,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:54,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:54,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:54,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:54,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:54,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:54,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:27:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:54,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:54,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:54,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:27:54,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:54,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 13:27:54,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:54,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:54,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:54,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:54,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:54,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-28 13:27:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:54,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:54,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:54,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:27:54,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:54,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:27:54,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:54,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:54,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:54,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:54,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:54,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:54,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-10-28 13:27:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:54,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:54,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:54,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:27:54,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:54,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:27:54,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:54,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:54,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:54,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:54,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:54,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:54,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 689 [2020-10-28 13:27:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:54,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:54,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:54,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:27:54,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:54,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 13:27:54,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:54,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:54,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:27:54,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:54,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 245 [2020-10-28 13:27:54,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:54,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 939 [2020-10-28 13:27:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:54,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:55,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:55,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:27:55,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:55,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-28 13:27:55,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:55,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:27:55,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:55,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1212 [2020-10-28 13:27:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:55,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:55,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:55,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:27:55,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:55,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:27:55,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:55,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:55,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:55,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:27:55,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:55,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:55,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1283 [2020-10-28 13:27:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:55,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:55,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:55,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-28 13:27:55,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:55,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 13:27:55,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:55,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:55,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:55,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-28 13:27:55,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:55,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:55,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1537 [2020-10-28 13:27:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:55,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:55,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:55,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 13:27:55,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:55,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 13:27:55,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:55,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:55,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:55,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-28 13:27:55,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:55,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:55,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1702 [2020-10-28 13:27:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:55,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:55,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:55,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:27:55,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:55,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:27:55,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:55,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:55,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:55,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 13:27:55,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:55,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 6066 backedges. 1236 proven. 572 refuted. 0 times theorem prover too weak. 4258 trivial. 0 not checked. [2020-10-28 13:27:57,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93355469] [2020-10-28 13:27:57,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:27:57,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:27:57,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187941621] [2020-10-28 13:27:57,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:27:57,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:27:57,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:27:57,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:27:57,879 INFO L87 Difference]: Start difference. First operand 19125 states and 20862 transitions. Second operand 7 states. [2020-10-28 13:28:02,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:28:02,838 INFO L93 Difference]: Finished difference Result 40620 states and 44533 transitions. [2020-10-28 13:28:02,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:28:02,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1816 [2020-10-28 13:28:02,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:28:02,893 INFO L225 Difference]: With dead ends: 40620 [2020-10-28 13:28:02,893 INFO L226 Difference]: Without dead ends: 21838 [2020-10-28 13:28:02,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:28:02,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21838 states. [2020-10-28 13:28:03,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21838 to 21827. [2020-10-28 13:28:03,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21827 states. [2020-10-28 13:28:03,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21827 states to 21827 states and 23700 transitions. [2020-10-28 13:28:03,351 INFO L78 Accepts]: Start accepts. Automaton has 21827 states and 23700 transitions. Word has length 1816 [2020-10-28 13:28:03,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:28:03,352 INFO L481 AbstractCegarLoop]: Abstraction has 21827 states and 23700 transitions. [2020-10-28 13:28:03,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:28:03,352 INFO L276 IsEmpty]: Start isEmpty. Operand 21827 states and 23700 transitions. [2020-10-28 13:28:03,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1879 [2020-10-28 13:28:03,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:28:03,433 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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] [2020-10-28 13:28:03,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:28:03,434 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:28:03,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:28:03,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1356757528, now seen corresponding path program 1 times [2020-10-28 13:28:03,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:28:03,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700409445] [2020-10-28 13:28:03,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:28:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:03,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:04,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:04,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:04,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:08,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:08,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1912 [2020-10-28 13:28:08,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:28:08,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 13:28:08,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:08,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:08,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:08,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 733 [2020-10-28 13:28:08,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-28 13:28:08,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:08,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:08,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:08,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:08,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:08,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:08,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:28:08,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:08,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:08,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:08,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:08,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:08,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:08,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:28:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:09,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:09,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:09,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:28:09,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:09,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 13:28:09,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:09,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:09,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:09,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:09,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:09,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:09,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:28:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:09,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:09,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:09,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:28:09,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:09,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 13:28:09,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:09,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:09,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:09,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:09,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:09,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:09,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:28:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:09,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:09,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:09,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:28:09,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:09,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:28:09,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:09,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:09,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:09,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:09,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:09,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:09,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:28:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:09,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:09,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:09,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:28:09,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:09,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:28:09,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:09,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:09,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:09,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:09,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:09,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:09,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-10-28 13:28:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:09,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:09,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:09,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:28:09,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:09,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 13:28:09,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:09,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:09,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:09,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:09,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:28:09,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:09,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2020-10-28 13:28:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:09,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:10,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:10,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:28:10,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:10,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-10-28 13:28:10,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:10,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:28:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-28 13:28:10,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:10,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 973 [2020-10-28 13:28:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:10,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:10,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:10,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-28 13:28:10,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:10,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 13:28:10,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:10,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:10,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:10,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-28 13:28:10,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:10,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:10,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:28:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:10,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:10,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:10,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 13:28:10,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:10,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:28:10,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:10,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:10,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:10,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:10,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:10,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:10,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1274 [2020-10-28 13:28:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:10,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:10,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:10,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:28:10,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:10,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:28:10,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:10,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:10,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:10,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:28:10,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:10,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:10,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1345 [2020-10-28 13:28:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:10,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:10,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:10,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-28 13:28:10,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:10,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:28:10,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:10,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:10,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:10,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-28 13:28:10,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:10,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:10,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1599 [2020-10-28 13:28:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:10,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:11,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:11,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 13:28:11,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:11,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 13:28:11,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:11,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:11,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:11,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-28 13:28:11,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:11,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:11,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1764 [2020-10-28 13:28:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:11,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:11,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:11,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:28:11,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:11,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:28:11,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:11,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:11,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:11,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 13:28:11,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:11,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:13,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6837 backedges. 1062 proven. 815 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2020-10-28 13:28:13,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700409445] [2020-10-28 13:28:13,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:28:13,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:28:13,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378764592] [2020-10-28 13:28:13,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:28:13,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:13,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:28:13,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:28:13,953 INFO L87 Difference]: Start difference. First operand 21827 states and 23700 transitions. Second operand 7 states. [2020-10-28 13:28:18,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:28:18,442 INFO L93 Difference]: Finished difference Result 43650 states and 47397 transitions. [2020-10-28 13:28:18,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:28:18,447 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1878 [2020-10-28 13:28:18,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:28:18,502 INFO L225 Difference]: With dead ends: 43650 [2020-10-28 13:28:18,502 INFO L226 Difference]: Without dead ends: 22166 [2020-10-28 13:28:18,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:28:18,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22166 states. [2020-10-28 13:28:18,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22166 to 22164. [2020-10-28 13:28:18,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22164 states. [2020-10-28 13:28:18,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22164 states to 22164 states and 24040 transitions. [2020-10-28 13:28:18,961 INFO L78 Accepts]: Start accepts. Automaton has 22164 states and 24040 transitions. Word has length 1878 [2020-10-28 13:28:18,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:28:18,963 INFO L481 AbstractCegarLoop]: Abstraction has 22164 states and 24040 transitions. [2020-10-28 13:28:18,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:28:18,964 INFO L276 IsEmpty]: Start isEmpty. Operand 22164 states and 24040 transitions. [2020-10-28 13:28:19,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2002 [2020-10-28 13:28:19,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:28:19,024 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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] [2020-10-28 13:28:19,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:28:19,025 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:28:19,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:28:19,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1852751906, now seen corresponding path program 1 times [2020-10-28 13:28:19,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:28:19,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771353567] [2020-10-28 13:28:19,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:28:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:19,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:20,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:20,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:25,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:25,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 2037 [2020-10-28 13:28:25,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:28:25,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5311 [2020-10-28 13:28:25,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:25,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:28:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-28 13:28:25,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:25,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:25,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:25,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:25,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:25,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:25,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:28:25,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:25,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:25,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:25,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:25,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:25,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:25,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:28:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:25,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:25,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:25,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:28:25,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:25,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-28 13:28:25,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:25,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:25,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:25,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:25,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:28:25,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:28:25,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:28:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:25,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:25,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:25,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:28:25,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:25,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-28 13:28:25,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:25,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:25,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:25,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:28:25,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 13:28:25,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:25,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:28:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:26,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:26,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:26,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:28:26,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:26,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:28:26,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:26,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:26,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:26,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-28 13:28:26,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:26,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:26,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:28:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:26,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:26,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:26,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:28:26,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:26,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:28:26,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:26,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:26,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:26,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 13:28:26,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:26,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:26,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-10-28 13:28:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:26,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:26,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:26,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:28:26,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:26,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:28:26,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:26,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:26,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:26,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:28:26,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:26,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:26,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2020-10-28 13:28:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:26,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:26,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:26,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-28 13:28:26,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:26,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 13:28:26,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:26,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:26,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:26,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 327 [2020-10-28 13:28:26,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:26,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:26,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:28:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:26,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:26,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:26,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 13:28:26,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:26,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:28:26,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:26,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:26,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:26,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:26,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:26,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:26,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1050 [2020-10-28 13:28:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:26,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:26,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:26,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:28:26,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:26,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:28:26,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:26,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:26,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:26,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 13:28:26,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:26,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:26,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1124 [2020-10-28 13:28:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:26,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:26,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:26,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:28:26,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:26,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 13:28:26,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:26,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:26,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:26,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-28 13:28:26,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:26,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:26,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1397 [2020-10-28 13:28:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:26,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:26,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:26,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:28:26,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:26,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:28:26,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:26,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:26,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:26,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:28:26,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:26,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:26,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1468 [2020-10-28 13:28:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:26,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:26,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:26,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-28 13:28:26,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:26,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 13:28:26,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:26,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:26,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:26,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-28 13:28:26,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:26,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:26,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1722 [2020-10-28 13:28:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:26,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:27,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:27,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 13:28:27,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:27,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:28:27,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:27,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:27,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:27,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-28 13:28:27,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:27,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:27,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1887 [2020-10-28 13:28:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:27,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:27,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:27,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:28:27,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:27,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:28:27,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:27,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:27,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 13:28:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:27,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:30,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7693 backedges. 463 proven. 1171 refuted. 0 times theorem prover too weak. 6059 trivial. 0 not checked. [2020-10-28 13:28:30,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771353567] [2020-10-28 13:28:30,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:28:30,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:28:30,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201785181] [2020-10-28 13:28:30,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:28:30,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:30,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:28:30,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:28:30,175 INFO L87 Difference]: Start difference. First operand 22164 states and 24040 transitions. Second operand 7 states. [2020-10-28 13:28:34,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:28:34,387 INFO L93 Difference]: Finished difference Result 46009 states and 49877 transitions. [2020-10-28 13:28:34,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:28:34,389 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 2001 [2020-10-28 13:28:34,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:28:34,437 INFO L225 Difference]: With dead ends: 46009 [2020-10-28 13:28:34,437 INFO L226 Difference]: Without dead ends: 24188 [2020-10-28 13:28:34,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:28:34,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24188 states. [2020-10-28 13:28:34,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24188 to 22164. [2020-10-28 13:28:34,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22164 states. [2020-10-28 13:28:35,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22164 states to 22164 states and 24009 transitions. [2020-10-28 13:28:35,278 INFO L78 Accepts]: Start accepts. Automaton has 22164 states and 24009 transitions. Word has length 2001 [2020-10-28 13:28:35,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:28:35,279 INFO L481 AbstractCegarLoop]: Abstraction has 22164 states and 24009 transitions. [2020-10-28 13:28:35,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:28:35,280 INFO L276 IsEmpty]: Start isEmpty. Operand 22164 states and 24009 transitions. [2020-10-28 13:28:35,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2304 [2020-10-28 13:28:35,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:28:35,352 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 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, 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] [2020-10-28 13:28:35,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:28:35,353 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:28:35,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:28:35,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1603536214, now seen corresponding path program 1 times [2020-10-28 13:28:35,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:28:35,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368780069] [2020-10-28 13:28:35,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:28:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:36,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:36,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:37,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:37,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:41,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:41,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 2341 [2020-10-28 13:28:41,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:28:41,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5148 [2020-10-28 13:28:41,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:41,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:41,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:28:41,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1201 [2020-10-28 13:28:41,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 303 [2020-10-28 13:28:41,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:41,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:41,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:41,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:41,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:41,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:41,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:28:41,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:41,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:41,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:41,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:41,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:41,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:41,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:28:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:41,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:41,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:41,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:28:41,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:41,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 13:28:41,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:41,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:41,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:41,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:41,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:41,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:41,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:28:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:41,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:41,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:41,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:28:41,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:41,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:28:41,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:41,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:41,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:41,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:41,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:41,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:41,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:28:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:41,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:41,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:41,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:28:41,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:41,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:28:41,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:41,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:41,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:41,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:41,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:41,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:41,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:28:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:41,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:41,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:41,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:28:41,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:41,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:28:41,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:41,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:41,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:41,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-28 13:28:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:41,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:41,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:41,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:28:41,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:41,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:28:41,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:41,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:41,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:41,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:41,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:41,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:41,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-28 13:28:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:41,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:41,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:41,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-28 13:28:41,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:41,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 13:28:41,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:41,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:41,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:41,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:41,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:41,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:41,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:28:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:41,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:41,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:41,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 13:28:41,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:41,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:28:41,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:41,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:41,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:41,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:41,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:41,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:41,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1111 [2020-10-28 13:28:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:41,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:41,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:41,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:28:41,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:41,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:28:41,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:41,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:41,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:41,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:41,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 13:28:41,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:41,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1185 [2020-10-28 13:28:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:41,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:42,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:42,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-28 13:28:42,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:42,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-10-28 13:28:42,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:42,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:42,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:28:42,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:28:42,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 304 [2020-10-28 13:28:42,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:42,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:28:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:42,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:42,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:42,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 13:28:42,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:42,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:28:42,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:42,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:42,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:28:42,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:28:42,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:28:42,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:42,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1486 [2020-10-28 13:28:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:42,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:42,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:42,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-28 13:28:42,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:42,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 13:28:42,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:42,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:42,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:42,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-28 13:28:42,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:42,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:42,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1770 [2020-10-28 13:28:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:43,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:43,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:43,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-28 13:28:43,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:43,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 13:28:43,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:43,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:43,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-28 13:28:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:43,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:43,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2024 [2020-10-28 13:28:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:43,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:43,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:43,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 13:28:43,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:43,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 13:28:43,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:43,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:43,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:43,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-28 13:28:43,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:43,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:43,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2189 [2020-10-28 13:28:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:43,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:43,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:43,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:28:43,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:43,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:28:43,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:43,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:43,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:43,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 13:28:43,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:43,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:45,779 INFO L134 CoverageAnalysis]: Checked inductivity of 9117 backedges. 1535 proven. 785 refuted. 0 times theorem prover too weak. 6797 trivial. 0 not checked. [2020-10-28 13:28:45,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368780069] [2020-10-28 13:28:45,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:28:45,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:28:45,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25300797] [2020-10-28 13:28:45,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:28:45,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:45,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:28:45,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:28:45,782 INFO L87 Difference]: Start difference. First operand 22164 states and 24009 transitions. Second operand 7 states. [2020-10-28 13:28:51,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:28:51,842 INFO L93 Difference]: Finished difference Result 46359 states and 50228 transitions. [2020-10-28 13:28:51,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:28:51,843 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 2303 [2020-10-28 13:28:51,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:28:51,888 INFO L225 Difference]: With dead ends: 46359 [2020-10-28 13:28:51,888 INFO L226 Difference]: Without dead ends: 24538 [2020-10-28 13:28:51,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:28:51,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24538 states. [2020-10-28 13:28:52,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24538 to 24199. [2020-10-28 13:28:52,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24199 states. [2020-10-28 13:28:52,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24199 states to 24199 states and 26058 transitions. [2020-10-28 13:28:52,377 INFO L78 Accepts]: Start accepts. Automaton has 24199 states and 26058 transitions. Word has length 2303 [2020-10-28 13:28:52,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:28:52,379 INFO L481 AbstractCegarLoop]: Abstraction has 24199 states and 26058 transitions. [2020-10-28 13:28:52,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:28:52,379 INFO L276 IsEmpty]: Start isEmpty. Operand 24199 states and 26058 transitions. [2020-10-28 13:28:52,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2324 [2020-10-28 13:28:52,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:28:52,455 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-28 13:28:52,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 13:28:52,455 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:28:52,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:28:52,456 INFO L82 PathProgramCache]: Analyzing trace with hash -379705434, now seen corresponding path program 1 times [2020-10-28 13:28:52,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:28:52,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531447215] [2020-10-28 13:28:52,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:28:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:52,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:53,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking...