/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/Problem18_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:01:02,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:01:02,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:01:02,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:01:02,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:01:02,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:01:02,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:01:02,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:01:02,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:01:02,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:01:02,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:01:02,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:01:02,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:01:02,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:01:02,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:01:02,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:01:02,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:01:02,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:01:03,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:01:03,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:01:03,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:01:03,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:01:03,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:01:03,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:01:03,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:01:03,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:01:03,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:01:03,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:01:03,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:01:03,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:01:03,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:01:03,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:01:03,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:01:03,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:01:03,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:01:03,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:01:03,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:01:03,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:01:03,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:01:03,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:01:03,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:01:03,077 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 14:01:03,131 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:01:03,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:01:03,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:01:03,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:01:03,138 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:01:03,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:01:03,138 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:01:03,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:01:03,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:01:03,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:01:03,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:01:03,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:01:03,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:01:03,141 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:01:03,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:01:03,142 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:01:03,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:01:03,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:01:03,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:01:03,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:01:03,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:01:03,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:01:03,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:01:03,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:01:03,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:01:03,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:01:03,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:01:03,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:01:03,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:01:03,146 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:01:03,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:01:03,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:01:03,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:01:03,671 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:01:03,672 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:01:03,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label57.c [2020-10-28 14:01:03,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/053e30c86/fe119b2530ad4feb9b7d123d940e4a8d/FLAGdf63bb4f8 [2020-10-28 14:01:04,772 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:01:04,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label57.c [2020-10-28 14:01:04,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/053e30c86/fe119b2530ad4feb9b7d123d940e4a8d/FLAGdf63bb4f8 [2020-10-28 14:01:05,265 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/053e30c86/fe119b2530ad4feb9b7d123d940e4a8d [2020-10-28 14:01:05,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:01:05,276 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:01:05,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:01:05,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:01:05,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:01:05,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:01:05" (1/1) ... [2020-10-28 14:01:05,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea86f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:01:05, skipping insertion in model container [2020-10-28 14:01:05,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:01:05" (1/1) ... [2020-10-28 14:01:05,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:01:05,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:01:06,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:01:06,598 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:01:07,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:01:07,159 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:01:07,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:01:07 WrapperNode [2020-10-28 14:01:07,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:01:07,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:01:07,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:01:07,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:01:07,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:01:07" (1/1) ... [2020-10-28 14:01:07,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:01:07" (1/1) ... [2020-10-28 14:01:07,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:01:07" (1/1) ... [2020-10-28 14:01:07,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:01:07" (1/1) ... [2020-10-28 14:01:07,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:01:07" (1/1) ... [2020-10-28 14:01:07,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:01:07" (1/1) ... [2020-10-28 14:01:07,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:01:07" (1/1) ... [2020-10-28 14:01:07,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:01:07,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:01:07,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:01:07,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:01:07,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:01:07" (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 14:01:07,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:01:07,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:01:07,533 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:01:07,533 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 14:01:07,533 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 14:01:07,533 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 14:01:07,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:01:07,533 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 14:01:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 14:01:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 14:01:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:01:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:01:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:01:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:01:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:01:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:01:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:01:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:01:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:01:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:01:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:01:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:01:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:01:12,204 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:01:12,204 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 14:01:12,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:01:12 BoogieIcfgContainer [2020-10-28 14:01:12,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:01:12,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:01:12,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:01:12,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:01:12,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:01:05" (1/3) ... [2020-10-28 14:01:12,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60eb15b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:01:12, skipping insertion in model container [2020-10-28 14:01:12,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:01:07" (2/3) ... [2020-10-28 14:01:12,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60eb15b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:01:12, skipping insertion in model container [2020-10-28 14:01:12,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:01:12" (3/3) ... [2020-10-28 14:01:12,218 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label57.c [2020-10-28 14:01:12,233 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:01:12,240 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:01:12,256 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:01:12,294 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:01:12,295 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:01:12,295 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:01:12,295 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:01:12,295 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:01:12,295 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:01:12,295 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:01:12,296 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:01:12,335 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-28 14:01:12,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 14:01:12,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:01:12,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:01:12,344 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:01:12,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:01:12,353 INFO L82 PathProgramCache]: Analyzing trace with hash -392694216, now seen corresponding path program 1 times [2020-10-28 14:01:12,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:01:12,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766870032] [2020-10-28 14:01:12,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:01:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:12,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:13,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:13,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 14:01:13,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:13,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-10-28 14:01:13,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:13,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:13,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:01:13,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:01:13,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:01:13,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:01:13,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:01:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:13,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:13,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:13,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:01:13,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:13,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 14:01:13,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:13,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:13,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:13,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:13,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:01:13,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:01:13,333 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 14:01:13,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766870032] [2020-10-28 14:01:13,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:01:13,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 14:01:13,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778785373] [2020-10-28 14:01:13,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:01:13,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:01:13,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:01:13,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:01:13,368 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-28 14:01:22,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:01:22,879 INFO L93 Difference]: Finished difference Result 2275 states and 4355 transitions. [2020-10-28 14:01:22,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:01:22,881 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-28 14:01:22,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:01:22,931 INFO L225 Difference]: With dead ends: 2275 [2020-10-28 14:01:22,931 INFO L226 Difference]: Without dead ends: 1433 [2020-10-28 14:01:22,946 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 14:01:22,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-28 14:01:23,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1426. [2020-10-28 14:01:23,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-10-28 14:01:23,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2332 transitions. [2020-10-28 14:01:23,131 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2332 transitions. Word has length 15 [2020-10-28 14:01:23,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:01:23,131 INFO L481 AbstractCegarLoop]: Abstraction has 1426 states and 2332 transitions. [2020-10-28 14:01:23,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:01:23,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2332 transitions. [2020-10-28 14:01:23,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 14:01:23,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:01:23,137 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 14:01:23,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:01:23,138 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:01:23,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:01:23,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1302558639, now seen corresponding path program 1 times [2020-10-28 14:01:23,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:01:23,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834516578] [2020-10-28 14:01:23,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:01:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:23,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:23,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:24,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:24,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 14:01:24,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:01:24,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 883 [2020-10-28 14:01:24,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:24,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:24,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:01:24,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:01:24,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 14:01:24,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:01:24,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:01:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:24,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:24,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:24,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:01:24,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:24,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 14:01:24,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:24,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:24,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:24,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:24,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:01:24,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 14:01:24,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:01:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:24,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:24,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:24,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 14:01:24,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:24,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-28 14:01:24,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:24,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:24,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:24,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:01:24,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 14:01:24,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:01:24,645 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:01:24,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834516578] [2020-10-28 14:01:24,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:01:24,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:01:24,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017233123] [2020-10-28 14:01:24,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:01:24,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:01:24,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:01:24,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:01:24,653 INFO L87 Difference]: Start difference. First operand 1426 states and 2332 transitions. Second operand 7 states. [2020-10-28 14:01:36,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:01:36,812 INFO L93 Difference]: Finished difference Result 4360 states and 7169 transitions. [2020-10-28 14:01:36,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:01:36,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 85 [2020-10-28 14:01:36,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:01:36,834 INFO L225 Difference]: With dead ends: 4360 [2020-10-28 14:01:36,834 INFO L226 Difference]: Without dead ends: 2940 [2020-10-28 14:01:36,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:01:36,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-10-28 14:01:36,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2890. [2020-10-28 14:01:36,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2890 states. [2020-10-28 14:01:36,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2890 states to 2890 states and 4126 transitions. [2020-10-28 14:01:36,949 INFO L78 Accepts]: Start accepts. Automaton has 2890 states and 4126 transitions. Word has length 85 [2020-10-28 14:01:36,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:01:36,950 INFO L481 AbstractCegarLoop]: Abstraction has 2890 states and 4126 transitions. [2020-10-28 14:01:36,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:01:36,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2890 states and 4126 transitions. [2020-10-28 14:01:36,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-28 14:01:36,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:01:36,970 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:01:36,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:01:36,970 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:01:36,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:01:36,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1695997619, now seen corresponding path program 1 times [2020-10-28 14:01:36,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:01:36,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141486746] [2020-10-28 14:01:36,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:01:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:37,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:37,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:38,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:38,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-28 14:01:38,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:01:38,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1165 [2020-10-28 14:01:38,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:38,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:38,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:01:38,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:01:38,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 14:01:38,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:38,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:01:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:38,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:38,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:38,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:01:38,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:38,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:01:38,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:38,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:38,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:38,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:38,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:01:38,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:38,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:01:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:38,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:38,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:38,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 14:01:38,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:38,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-28 14:01:38,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:38,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:38,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:38,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:01:38,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 14:01:38,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:38,895 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:01:38,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141486746] [2020-10-28 14:01:38,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:01:38,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 14:01:38,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025497674] [2020-10-28 14:01:38,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:01:38,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:01:38,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:01:38,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:01:38,901 INFO L87 Difference]: Start difference. First operand 2890 states and 4126 transitions. Second operand 8 states. [2020-10-28 14:01:54,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:01:54,843 INFO L93 Difference]: Finished difference Result 11629 states and 16983 transitions. [2020-10-28 14:01:54,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:01:54,844 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 147 [2020-10-28 14:01:54,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:01:54,905 INFO L225 Difference]: With dead ends: 11629 [2020-10-28 14:01:54,905 INFO L226 Difference]: Without dead ends: 8745 [2020-10-28 14:01:54,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:01:54,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8745 states. [2020-10-28 14:01:55,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8745 to 7999. [2020-10-28 14:01:55,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7999 states. [2020-10-28 14:01:55,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7999 states to 7999 states and 10658 transitions. [2020-10-28 14:01:55,170 INFO L78 Accepts]: Start accepts. Automaton has 7999 states and 10658 transitions. Word has length 147 [2020-10-28 14:01:55,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:01:55,171 INFO L481 AbstractCegarLoop]: Abstraction has 7999 states and 10658 transitions. [2020-10-28 14:01:55,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:01:55,171 INFO L276 IsEmpty]: Start isEmpty. Operand 7999 states and 10658 transitions. [2020-10-28 14:01:55,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-28 14:01:55,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:01:55,175 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:55,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:01:55,175 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:01:55,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:01:55,176 INFO L82 PathProgramCache]: Analyzing trace with hash 2012133472, now seen corresponding path program 1 times [2020-10-28 14:01:55,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:01:55,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264382012] [2020-10-28 14:01:55,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:01:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:55,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:55,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:56,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:58,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:58,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 14:01:58,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:01:58,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3306 [2020-10-28 14:01:58,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:58,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:58,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:01:58,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:01:58,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 14:01:58,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:58,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:01:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:58,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:58,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:58,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:01:58,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:58,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 14:01:58,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:58,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:58,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:58,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:58,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:01:58,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:58,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:01:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:58,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:58,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:58,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 14:01:58,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:58,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-28 14:01:58,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:58,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:58,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:58,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:01:58,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 14:01:58,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:59,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-28 14:01:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:59,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:59,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:59,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 14:01:59,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:59,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 14:01:59,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:59,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:59,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:59,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 14:01:59,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:59,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:59,349 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 14 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 14:01:59,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264382012] [2020-10-28 14:01:59,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:01:59,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:01:59,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304319640] [2020-10-28 14:01:59,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:01:59,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:01:59,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:01:59,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:01:59,352 INFO L87 Difference]: Start difference. First operand 7999 states and 10658 transitions. Second operand 7 states. [2020-10-28 14:02:09,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:02:09,154 INFO L93 Difference]: Finished difference Result 17006 states and 22955 transitions. [2020-10-28 14:02:09,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:02:09,155 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 210 [2020-10-28 14:02:09,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:02:09,209 INFO L225 Difference]: With dead ends: 17006 [2020-10-28 14:02:09,209 INFO L226 Difference]: Without dead ends: 9013 [2020-10-28 14:02:09,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:02:09,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9013 states. [2020-10-28 14:02:09,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9013 to 8795. [2020-10-28 14:02:09,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8795 states. [2020-10-28 14:02:09,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8795 states to 8795 states and 11556 transitions. [2020-10-28 14:02:09,513 INFO L78 Accepts]: Start accepts. Automaton has 8795 states and 11556 transitions. Word has length 210 [2020-10-28 14:02:09,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:02:09,515 INFO L481 AbstractCegarLoop]: Abstraction has 8795 states and 11556 transitions. [2020-10-28 14:02:09,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:02:09,515 INFO L276 IsEmpty]: Start isEmpty. Operand 8795 states and 11556 transitions. [2020-10-28 14:02:09,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-10-28 14:02:09,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:02:09,524 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:09,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:02:09,524 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:02:09,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:02:09,525 INFO L82 PathProgramCache]: Analyzing trace with hash -2018554177, now seen corresponding path program 1 times [2020-10-28 14:02:09,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:02:09,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039990034] [2020-10-28 14:02:09,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:02:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:09,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:09,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:10,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:11,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:14,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:14,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 412 [2020-10-28 14:02:14,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:02:14,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4922 [2020-10-28 14:02:14,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:14,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:14,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:02:14,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 14:02:14,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 14:02:14,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:02:14,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:02:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:14,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:14,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:14,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:02:14,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:14,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:02:14,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:14,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:14,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:14,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:14,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:14,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:02:14,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:02:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:14,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:14,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:14,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 14:02:14,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:14,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-28 14:02:14,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:14,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:14,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:02:14,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:14,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 14:02:14,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:02:15,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-28 14:02:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:15,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:15,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:15,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 14:02:15,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:15,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-28 14:02:15,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:15,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:15,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:02:15,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:02:15,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 14:02:15,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:15,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-28 14:02:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:15,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:15,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:15,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 14:02:15,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:15,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 14:02:15,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:15,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:15,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:15,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 14:02:15,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:15,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:15,742 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 144 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 14:02:15,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039990034] [2020-10-28 14:02:15,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:02:15,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:02:15,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670164345] [2020-10-28 14:02:15,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:02:15,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:02:15,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:02:15,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:02:15,746 INFO L87 Difference]: Start difference. First operand 8795 states and 11556 transitions. Second operand 7 states. [2020-10-28 14:02:29,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:02:29,570 INFO L93 Difference]: Finished difference Result 20933 states and 30497 transitions. [2020-10-28 14:02:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:02:29,572 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 396 [2020-10-28 14:02:29,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:02:29,654 INFO L225 Difference]: With dead ends: 20933 [2020-10-28 14:02:29,654 INFO L226 Difference]: Without dead ends: 11266 [2020-10-28 14:02:29,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:02:29,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11266 states. [2020-10-28 14:02:30,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11266 to 10974. [2020-10-28 14:02:30,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10974 states. [2020-10-28 14:02:30,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10974 states to 10974 states and 12582 transitions. [2020-10-28 14:02:30,156 INFO L78 Accepts]: Start accepts. Automaton has 10974 states and 12582 transitions. Word has length 396 [2020-10-28 14:02:30,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:02:30,156 INFO L481 AbstractCegarLoop]: Abstraction has 10974 states and 12582 transitions. [2020-10-28 14:02:30,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:02:30,157 INFO L276 IsEmpty]: Start isEmpty. Operand 10974 states and 12582 transitions. [2020-10-28 14:02:30,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-28 14:02:30,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:02:30,166 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:30,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:02:30,166 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:02:30,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:02:30,167 INFO L82 PathProgramCache]: Analyzing trace with hash -343967534, now seen corresponding path program 1 times [2020-10-28 14:02:30,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:02:30,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856421562] [2020-10-28 14:02:30,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:02:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:30,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:30,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:33,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:33,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:35,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:35,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 427 [2020-10-28 14:02:35,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:02:35,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-28 14:02:35,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:35,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:35,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:02:35,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 14:02:35,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 14:02:35,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:35,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:02:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:35,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:35,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:35,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:02:35,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:35,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:02:35,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:35,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:35,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:35,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:35,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:35,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:35,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:02:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:35,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:35,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:35,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:02:35,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:35,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-28 14:02:35,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:35,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:35,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:02:35,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:35,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 14:02:35,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:02:36,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:02:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:36,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:36,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:36,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:02:36,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:36,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 14:02:36,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:36,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:36,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:02:36,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:36,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:02:36,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:02:36,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 14:02:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:36,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:36,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:36,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 14:02:36,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:36,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 14:02:36,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:36,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:36,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:02:36,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:02:36,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 14:02:36,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:36,685 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:02:36,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856421562] [2020-10-28 14:02:36,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:02:36,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:02:36,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72153675] [2020-10-28 14:02:36,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:02:36,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:02:36,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:02:36,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:02:36,689 INFO L87 Difference]: Start difference. First operand 10974 states and 12582 transitions. Second operand 7 states. [2020-10-28 14:02:44,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:02:44,232 INFO L93 Difference]: Finished difference Result 22720 states and 26063 transitions. [2020-10-28 14:02:44,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 14:02:44,233 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 411 [2020-10-28 14:02:44,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:02:44,277 INFO L225 Difference]: With dead ends: 22720 [2020-10-28 14:02:44,277 INFO L226 Difference]: Without dead ends: 12454 [2020-10-28 14:02:44,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:02:44,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12454 states. [2020-10-28 14:02:44,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12454 to 12412. [2020-10-28 14:02:44,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12412 states. [2020-10-28 14:02:44,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12412 states to 12412 states and 13906 transitions. [2020-10-28 14:02:44,592 INFO L78 Accepts]: Start accepts. Automaton has 12412 states and 13906 transitions. Word has length 411 [2020-10-28 14:02:44,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:02:44,594 INFO L481 AbstractCegarLoop]: Abstraction has 12412 states and 13906 transitions. [2020-10-28 14:02:44,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:02:44,594 INFO L276 IsEmpty]: Start isEmpty. Operand 12412 states and 13906 transitions. [2020-10-28 14:02:44,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2020-10-28 14:02:44,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:02:44,605 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:44,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:02:44,606 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:02:44,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:02:44,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1619213848, now seen corresponding path program 1 times [2020-10-28 14:02:44,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:02:44,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364154969] [2020-10-28 14:02:44,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:02:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:44,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:44,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:45,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:49,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:49,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 460 [2020-10-28 14:02:49,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:02:49,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 14:02:49,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:49,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:49,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:02:49,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 14:02:49,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 14:02:49,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:49,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:02:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:49,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:49,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:49,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:02:49,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:49,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:02:49,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:49,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:49,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:49,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:49,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:49,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:49,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:02:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:50,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:50,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:50,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:02:50,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:50,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-28 14:02:50,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:50,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:50,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:02:50,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:50,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 14:02:50,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:50,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:02:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:50,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:50,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:50,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:02:50,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:50,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 14:02:50,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:50,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:50,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:02:50,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:50,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:02:50,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:50,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 14:02:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:50,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:50,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:50,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 14:02:50,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:50,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 14:02:50,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:50,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:50,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:02:50,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:02:50,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 14:02:50,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:51,097 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:02:51,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364154969] [2020-10-28 14:02:51,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:02:51,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:02:51,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270582306] [2020-10-28 14:02:51,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:02:51,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:02:51,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:02:51,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:02:51,101 INFO L87 Difference]: Start difference. First operand 12412 states and 13906 transitions. Second operand 7 states. [2020-10-28 14:03:06,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:03:06,211 INFO L93 Difference]: Finished difference Result 30827 states and 35417 transitions. [2020-10-28 14:03:06,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:03:06,212 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 444 [2020-10-28 14:03:06,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:03:06,274 INFO L225 Difference]: With dead ends: 30827 [2020-10-28 14:03:06,274 INFO L226 Difference]: Without dead ends: 19123 [2020-10-28 14:03:06,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 14:03:06,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19123 states. [2020-10-28 14:03:06,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19123 to 17560. [2020-10-28 14:03:06,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17560 states. [2020-10-28 14:03:06,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17560 states to 17560 states and 19641 transitions. [2020-10-28 14:03:06,953 INFO L78 Accepts]: Start accepts. Automaton has 17560 states and 19641 transitions. Word has length 444 [2020-10-28 14:03:06,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:03:06,954 INFO L481 AbstractCegarLoop]: Abstraction has 17560 states and 19641 transitions. [2020-10-28 14:03:06,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:03:06,954 INFO L276 IsEmpty]: Start isEmpty. Operand 17560 states and 19641 transitions. [2020-10-28 14:03:06,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2020-10-28 14:03:06,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:03:06,967 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:03:06,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:03:06,970 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:03:06,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:03:06,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1054538803, now seen corresponding path program 1 times [2020-10-28 14:03:06,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:03:06,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162299238] [2020-10-28 14:03:06,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:03:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:07,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:07,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:07,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:07,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:12,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:12,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 538 [2020-10-28 14:03:12,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:03:12,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 14:03:12,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:12,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:12,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:03:12,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-28 14:03:12,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 14:03:12,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:12,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:03:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:12,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:12,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:12,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:03:12,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:12,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:03:12,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:12,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:12,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:12,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:12,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:12,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:12,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:03:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:12,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:12,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:12,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:03:12,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:12,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 14:03:12,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:12,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:12,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:12,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:12,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:12,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:12,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:03:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:12,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:12,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:12,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:03:12,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:12,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:03:12,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:12,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:12,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:12,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:12,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:12,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:12,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 14:03:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:12,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:12,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:12,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 14:03:12,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:12,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 14:03:12,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:12,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:12,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:03:12,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:12,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 14:03:12,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:12,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-28 14:03:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:12,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:12,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:12,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 14:03:12,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:12,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 14:03:12,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:12,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:12,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:03:12,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:03:12,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 14:03:12,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:13,198 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 218 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-28 14:03:13,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162299238] [2020-10-28 14:03:13,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:03:13,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:03:13,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889227644] [2020-10-28 14:03:13,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:03:13,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:03:13,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:03:13,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:03:13,201 INFO L87 Difference]: Start difference. First operand 17560 states and 19641 transitions. Second operand 7 states. [2020-10-28 14:03:24,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:03:24,350 INFO L93 Difference]: Finished difference Result 40202 states and 45948 transitions. [2020-10-28 14:03:24,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:03:24,351 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 520 [2020-10-28 14:03:24,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:03:24,425 INFO L225 Difference]: With dead ends: 40202 [2020-10-28 14:03:24,426 INFO L226 Difference]: Without dead ends: 23350 [2020-10-28 14:03:24,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 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 14:03:24,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23350 states. [2020-10-28 14:03:24,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23350 to 22570. [2020-10-28 14:03:24,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22570 states. [2020-10-28 14:03:24,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22570 states to 22570 states and 25113 transitions. [2020-10-28 14:03:24,926 INFO L78 Accepts]: Start accepts. Automaton has 22570 states and 25113 transitions. Word has length 520 [2020-10-28 14:03:24,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:03:24,928 INFO L481 AbstractCegarLoop]: Abstraction has 22570 states and 25113 transitions. [2020-10-28 14:03:24,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:03:24,928 INFO L276 IsEmpty]: Start isEmpty. Operand 22570 states and 25113 transitions. [2020-10-28 14:03:24,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2020-10-28 14:03:24,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:03:24,945 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:03:24,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:03:24,946 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:03:24,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:03:24,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1977943169, now seen corresponding path program 1 times [2020-10-28 14:03:24,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:03:24,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643281372] [2020-10-28 14:03:24,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:03:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:25,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:25,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:26,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:30,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:30,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 605 [2020-10-28 14:03:30,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:03:30,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 14:03:30,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:30,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:30,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:03:30,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 464 [2020-10-28 14:03:30,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 14:03:30,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:30,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:03:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:30,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:30,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:30,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:03:30,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:30,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:03:30,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:30,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:30,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:30,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:30,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:30,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:30,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:03:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:30,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:30,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:30,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:03:30,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:30,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 14:03:30,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:30,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:30,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:30,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:30,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:30,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:30,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:03:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:30,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:30,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:30,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:03:30,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:30,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:03:30,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:30,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:30,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:30,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 14:03:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:30,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:30,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:30,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 14:03:30,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:30,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 14:03:30,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:30,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:30,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:03:30,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:30,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 14:03:30,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:30,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-10-28 14:03:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:30,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:30,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:30,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 14:03:30,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:30,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 14:03:30,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:30,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:30,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:03:30,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:03:30,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 14:03:30,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:31,289 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 264 proven. 2 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-28 14:03:31,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643281372] [2020-10-28 14:03:31,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:03:31,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:03:31,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366818350] [2020-10-28 14:03:31,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:03:31,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:03:31,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:03:31,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:03:31,299 INFO L87 Difference]: Start difference. First operand 22570 states and 25113 transitions. Second operand 7 states. [2020-10-28 14:03:43,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:03:43,893 INFO L93 Difference]: Finished difference Result 57504 states and 66923 transitions. [2020-10-28 14:03:43,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:03:43,895 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 587 [2020-10-28 14:03:43,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:03:44,027 INFO L225 Difference]: With dead ends: 57504 [2020-10-28 14:03:44,028 INFO L226 Difference]: Without dead ends: 35642 [2020-10-28 14:03:44,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 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 14:03:44,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35642 states. [2020-10-28 14:03:45,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35642 to 34687. [2020-10-28 14:03:45,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34687 states. [2020-10-28 14:03:45,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34687 states to 34687 states and 38376 transitions. [2020-10-28 14:03:45,124 INFO L78 Accepts]: Start accepts. Automaton has 34687 states and 38376 transitions. Word has length 587 [2020-10-28 14:03:45,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:03:45,126 INFO L481 AbstractCegarLoop]: Abstraction has 34687 states and 38376 transitions. [2020-10-28 14:03:45,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:03:45,126 INFO L276 IsEmpty]: Start isEmpty. Operand 34687 states and 38376 transitions. [2020-10-28 14:03:45,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2020-10-28 14:03:45,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:03:45,147 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:03:45,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:03:45,148 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:03:45,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:03:45,148 INFO L82 PathProgramCache]: Analyzing trace with hash -303602722, now seen corresponding path program 1 times [2020-10-28 14:03:45,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:03:45,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940677147] [2020-10-28 14:03:45,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:03:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:45,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:45,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:45,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:46,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:50,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:50,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 637 [2020-10-28 14:03:50,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:03:50,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-28 14:03:50,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:50,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:50,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:03:50,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-28 14:03:50,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 14:03:50,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:50,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:03:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:50,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:50,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:50,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:03:50,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:50,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:03:50,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:50,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:50,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:50,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:50,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:50,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:50,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:03:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:50,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:50,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:50,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:03:50,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:50,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 14:03:50,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:50,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:50,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:50,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:03:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:50,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:50,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:50,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:03:50,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:50,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:03:50,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:50,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:50,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:50,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:50,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:50,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:50,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 14:03:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:50,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:50,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:50,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 14:03:50,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:50,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 14:03:50,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:50,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:50,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:03:50,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:50,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 14:03:50,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:50,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-28 14:03:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:50,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:50,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:50,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 14:03:50,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:50,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 14:03:50,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:50,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:50,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:03:50,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:03:50,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 14:03:50,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:51,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-10-28 14:03:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:51,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:51,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:51,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 14:03:51,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:51,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 14:03:51,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:51,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:51,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:51,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-28 14:03:51,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:51,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:51,498 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 222 proven. 107 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2020-10-28 14:03:51,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940677147] [2020-10-28 14:03:51,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:03:51,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:03:51,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217755025] [2020-10-28 14:03:51,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:03:51,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:03:51,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:03:51,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:03:51,501 INFO L87 Difference]: Start difference. First operand 34687 states and 38376 transitions. Second operand 8 states. [2020-10-28 14:04:08,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:04:08,528 INFO L93 Difference]: Finished difference Result 79377 states and 89854 transitions. [2020-10-28 14:04:08,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:04:08,529 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 617 [2020-10-28 14:04:08,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:04:08,658 INFO L225 Difference]: With dead ends: 79377 [2020-10-28 14:04:08,658 INFO L226 Difference]: Without dead ends: 45398 [2020-10-28 14:04:08,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:04:08,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45398 states. [2020-10-28 14:04:09,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45398 to 45325. [2020-10-28 14:04:09,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45325 states. [2020-10-28 14:04:09,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45325 states to 45325 states and 49866 transitions. [2020-10-28 14:04:09,604 INFO L78 Accepts]: Start accepts. Automaton has 45325 states and 49866 transitions. Word has length 617 [2020-10-28 14:04:09,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:04:09,605 INFO L481 AbstractCegarLoop]: Abstraction has 45325 states and 49866 transitions. [2020-10-28 14:04:09,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:04:09,605 INFO L276 IsEmpty]: Start isEmpty. Operand 45325 states and 49866 transitions. [2020-10-28 14:04:09,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2020-10-28 14:04:09,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:04:09,617 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:04:09,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 14:04:09,618 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:04:09,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:04:09,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1681227784, now seen corresponding path program 1 times [2020-10-28 14:04:09,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:04:09,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099553278] [2020-10-28 14:04:09,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:04:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:09,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:10,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:10,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:12,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:14,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:14,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 679 [2020-10-28 14:04:14,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:04:14,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 14:04:14,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:14,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:14,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:04:14,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 14:04:14,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-28 14:04:14,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:14,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:04:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:14,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:14,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:14,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:04:14,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:14,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:04:14,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:14,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:14,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:14,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:14,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:14,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:14,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:04:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:15,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:15,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:15,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:04:15,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:15,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 14:04:15,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:15,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:15,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:04:15,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:15,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 14:04:15,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:15,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:04:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:15,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:15,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:15,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:04:15,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:15,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 14:04:15,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:15,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:15,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:04:15,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:15,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:04:15,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:15,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 14:04:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:15,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:15,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:15,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 14:04:15,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:15,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-28 14:04:15,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:15,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:15,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:04:15,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:04:15,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 14:04:15,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:15,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-10-28 14:04:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:15,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:15,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:15,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 14:04:15,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:15,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 14:04:15,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:15,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:15,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:15,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-28 14:04:15,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:15,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:15,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-28 14:04:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:15,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:15,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:15,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 14:04:15,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:15,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 14:04:15,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:15,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:15,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:15,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 14:04:15,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:15,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:15,921 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 175 proven. 191 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-28 14:04:15,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099553278] [2020-10-28 14:04:15,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:04:15,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:04:15,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224468365] [2020-10-28 14:04:15,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:04:15,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:04:15,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:04:15,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:04:15,923 INFO L87 Difference]: Start difference. First operand 45325 states and 49866 transitions. Second operand 7 states. [2020-10-28 14:04:27,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:04:27,918 INFO L93 Difference]: Finished difference Result 105035 states and 117418 transitions. [2020-10-28 14:04:27,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:04:27,919 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 659 [2020-10-28 14:04:27,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:04:28,095 INFO L225 Difference]: With dead ends: 105035 [2020-10-28 14:04:28,096 INFO L226 Difference]: Without dead ends: 60418 [2020-10-28 14:04:28,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 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 14:04:28,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60418 states. [2020-10-28 14:04:29,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60418 to 59671. [2020-10-28 14:04:29,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59671 states. [2020-10-28 14:04:29,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59671 states to 59671 states and 65734 transitions. [2020-10-28 14:04:29,517 INFO L78 Accepts]: Start accepts. Automaton has 59671 states and 65734 transitions. Word has length 659 [2020-10-28 14:04:29,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:04:29,518 INFO L481 AbstractCegarLoop]: Abstraction has 59671 states and 65734 transitions. [2020-10-28 14:04:29,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:04:29,518 INFO L276 IsEmpty]: Start isEmpty. Operand 59671 states and 65734 transitions. [2020-10-28 14:04:29,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2020-10-28 14:04:29,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:04:29,536 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 14:04:29,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 14:04:29,537 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:04:29,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:04:29,538 INFO L82 PathProgramCache]: Analyzing trace with hash -326579840, now seen corresponding path program 1 times [2020-10-28 14:04:29,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:04:29,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077025528] [2020-10-28 14:04:29,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:04:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:29,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:30,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:30,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:34,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:34,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 698 [2020-10-28 14:04:34,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:04:34,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 14:04:34,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:34,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:34,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:04:34,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-10-28 14:04:34,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 14:04:34,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:34,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:04:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:34,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:34,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:34,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:04:34,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:34,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:04:34,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:34,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:34,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:34,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:34,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:34,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:34,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:04:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:34,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:35,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:35,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-28 14:04:35,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:35,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 14:04:35,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:35,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:35,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:04:35,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:35,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-28 14:04:35,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:35,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:04:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:35,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:35,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:35,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:04:35,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:35,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 14:04:35,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:35,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:35,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:04:35,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:35,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 14:04:35,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:35,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-28 14:04:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:35,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:35,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:35,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 14:04:35,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:35,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 14:04:35,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:35,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:35,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:04:35,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:04:35,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 14:04:35,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:35,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-10-28 14:04:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:35,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:35,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:35,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-28 14:04:35,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:35,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 14:04:35,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:35,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:35,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:35,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 273 [2020-10-28 14:04:35,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:35,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:36,068 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 98 proven. 75 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2020-10-28 14:04:36,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077025528] [2020-10-28 14:04:36,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:04:36,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:04:36,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444628992] [2020-10-28 14:04:36,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:04:36,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:04:36,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:04:36,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:04:36,070 INFO L87 Difference]: Start difference. First operand 59671 states and 65734 transitions. Second operand 7 states.