/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:45:04,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:45:04,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:45:04,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:45:04,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:45:04,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:45:04,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:45:04,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:45:04,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:45:04,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:45:04,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:45:04,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:45:04,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:45:04,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:45:04,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:45:04,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:45:04,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:45:04,968 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:45:04,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:45:04,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:45:04,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:45:04,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:45:04,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:45:04,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:45:04,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:45:04,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:45:04,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:45:04,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:45:04,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:45:04,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:45:04,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:45:05,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:45:05,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:45:05,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:45:05,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:45:05,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:45:05,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:45:05,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:45:05,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:45:05,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:45:05,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:45:05,008 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 [2020-10-26 23:45:05,042 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:45:05,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:45:05,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:45:05,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:45:05,047 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:45:05,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:45:05,047 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:45:05,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:45:05,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:45:05,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:45:05,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:45:05,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:45:05,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:45:05,051 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:45:05,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:45:05,052 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:45:05,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:45:05,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:45:05,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:45:05,053 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:45:05,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:45:05,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:45:05,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:45:05,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:45:05,054 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:45:05,054 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:45:05,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:45:05,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:45:05,054 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:45:05,054 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:45:05,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:45:05,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:45:05,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:45:05,552 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:45:05,553 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:45:05,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label42.c [2020-10-26 23:45:05,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edb9eec74/3a4e73c184884993bf1d8f7e2778ea90/FLAGc799baf0a [2020-10-26 23:45:06,602 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:45:06,603 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label42.c [2020-10-26 23:45:06,637 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edb9eec74/3a4e73c184884993bf1d8f7e2778ea90/FLAGc799baf0a [2020-10-26 23:45:06,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edb9eec74/3a4e73c184884993bf1d8f7e2778ea90 [2020-10-26 23:45:06,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:45:06,689 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:45:06,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:45:06,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:45:06,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:45:06,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:45:06" (1/1) ... [2020-10-26 23:45:06,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b621283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:06, skipping insertion in model container [2020-10-26 23:45:06,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:45:06" (1/1) ... [2020-10-26 23:45:06,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:45:06,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:45:07,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:45:07,817 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:45:08,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:45:08,214 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:45:08,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:08 WrapperNode [2020-10-26 23:45:08,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:45:08,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:45:08,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:45:08,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:45:08,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:08" (1/1) ... [2020-10-26 23:45:08,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:08" (1/1) ... [2020-10-26 23:45:08,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:08" (1/1) ... [2020-10-26 23:45:08,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:08" (1/1) ... [2020-10-26 23:45:08,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:08" (1/1) ... [2020-10-26 23:45:08,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:08" (1/1) ... [2020-10-26 23:45:08,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:08" (1/1) ... [2020-10-26 23:45:08,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:45:08,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:45:08,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:45:08,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:45:08,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:08" (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 [2020-10-26 23:45:08,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:45:08,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:45:08,595 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:45:08,596 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:45:08,596 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:45:08,597 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:45:08,597 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:45:08,598 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:45:08,598 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:45:08,598 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:45:08,600 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:45:08,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:45:08,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:45:08,600 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:45:08,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:45:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:45:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:45:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:45:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:45:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:45:08,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:45:12,236 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:45:12,236 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:45:12,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:45:12 BoogieIcfgContainer [2020-10-26 23:45:12,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:45:12,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:45:12,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:45:12,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:45:12,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:45:06" (1/3) ... [2020-10-26 23:45:12,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da89476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:45:12, skipping insertion in model container [2020-10-26 23:45:12,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:08" (2/3) ... [2020-10-26 23:45:12,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da89476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:45:12, skipping insertion in model container [2020-10-26 23:45:12,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:45:12" (3/3) ... [2020-10-26 23:45:12,251 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label42.c [2020-10-26 23:45:12,268 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:45:12,275 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:45:12,295 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:45:12,336 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:45:12,337 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:45:12,337 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:45:12,337 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:45:12,337 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:45:12,337 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:45:12,338 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:45:12,338 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:45:12,371 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-26 23:45:12,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-26 23:45:12,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:45:12,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:45:12,383 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:45:12,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:45:12,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1619361537, now seen corresponding path program 1 times [2020-10-26 23:45:12,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:45:12,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675701265] [2020-10-26 23:45:12,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:45:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:12,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:13,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:13,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-26 23:45:13,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:13,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 710 [2020-10-26 23:45:13,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:13,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:45:13,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:45:13,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-26 23:45:13,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:45:13,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:13,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:13,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:13,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:13,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:13,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:45:13,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:45:13,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:13,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:45:13,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675701265] [2020-10-26 23:45:13,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:45:13,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 23:45:13,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079200636] [2020-10-26 23:45:13,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:45:13,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:45:13,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:45:13,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:45:13,680 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 5 states. [2020-10-26 23:45:13,854 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:45:22,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:45:22,493 INFO L93 Difference]: Finished difference Result 1589 states and 2889 transitions. [2020-10-26 23:45:22,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:45:22,499 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-10-26 23:45:22,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:45:22,529 INFO L225 Difference]: With dead ends: 1589 [2020-10-26 23:45:22,530 INFO L226 Difference]: Without dead ends: 1050 [2020-10-26 23:45:22,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:45:22,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-10-26 23:45:22,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1025. [2020-10-26 23:45:22,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2020-10-26 23:45:22,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1567 transitions. [2020-10-26 23:45:22,724 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1567 transitions. Word has length 53 [2020-10-26 23:45:22,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:45:22,727 INFO L481 AbstractCegarLoop]: Abstraction has 1025 states and 1567 transitions. [2020-10-26 23:45:22,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:45:22,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1567 transitions. [2020-10-26 23:45:22,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-26 23:45:22,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:45:22,742 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:45:22,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:45:22,743 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:45:22,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:45:22,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1995033707, now seen corresponding path program 1 times [2020-10-26 23:45:22,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:45:22,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892604551] [2020-10-26 23:45:22,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:45:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:22,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:23,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:24,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:25,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:25,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-26 23:45:25,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:45:25,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2958 [2020-10-26 23:45:25,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:25,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:45:25,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:45:25,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-26 23:45:25,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:45:25,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:25,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:25,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:25,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:25,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:25,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:45:25,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:25,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:25,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:25,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:45:25,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:45:26,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:45:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:26,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:26,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:26,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 23:45:26,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:26,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-26 23:45:26,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:26,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:26,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:26,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 23:45:26,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:26,444 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:45:26,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892604551] [2020-10-26 23:45:26,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:45:26,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:45:26,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403023291] [2020-10-26 23:45:26,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:45:26,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:45:26,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:45:26,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:45:26,453 INFO L87 Difference]: Start difference. First operand 1025 states and 1567 transitions. Second operand 7 states. [2020-10-26 23:45:37,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:45:37,688 INFO L93 Difference]: Finished difference Result 2725 states and 4240 transitions. [2020-10-26 23:45:37,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:45:37,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-10-26 23:45:37,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:45:37,708 INFO L225 Difference]: With dead ends: 2725 [2020-10-26 23:45:37,708 INFO L226 Difference]: Without dead ends: 1706 [2020-10-26 23:45:37,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:45:37,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2020-10-26 23:45:37,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1663. [2020-10-26 23:45:37,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1663 states. [2020-10-26 23:45:37,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 2215 transitions. [2020-10-26 23:45:37,821 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 2215 transitions. Word has length 125 [2020-10-26 23:45:37,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:45:37,824 INFO L481 AbstractCegarLoop]: Abstraction has 1663 states and 2215 transitions. [2020-10-26 23:45:37,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:45:37,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 2215 transitions. [2020-10-26 23:45:37,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-26 23:45:37,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:45:37,831 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:45:37,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:45:37,831 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:45:37,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:45:37,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1199812347, now seen corresponding path program 1 times [2020-10-26 23:45:37,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:45:37,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087367856] [2020-10-26 23:45:37,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:45:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:37,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:38,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:39,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:39,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:45:39,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:45:39,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1749 [2020-10-26 23:45:39,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:39,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:45:39,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:45:39,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:45:39,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:39,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:39,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:39,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:39,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:39,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:39,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:45:39,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:39,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:39,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:39,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:45:39,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:39,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:45:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:40,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:40,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:40,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:45:40,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:40,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-26 23:45:40,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:40,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:40,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:40,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:45:40,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:45:40,551 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:45:40,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087367856] [2020-10-26 23:45:40,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:45:40,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:45:40,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682524558] [2020-10-26 23:45:40,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:45:40,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:45:40,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:45:40,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:45:40,557 INFO L87 Difference]: Start difference. First operand 1663 states and 2215 transitions. Second operand 7 states. [2020-10-26 23:45:51,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:45:51,998 INFO L93 Difference]: Finished difference Result 3057 states and 4143 transitions. [2020-10-26 23:45:52,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:45:52,004 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-10-26 23:45:52,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:45:52,015 INFO L225 Difference]: With dead ends: 3057 [2020-10-26 23:45:52,016 INFO L226 Difference]: Without dead ends: 1707 [2020-10-26 23:45:52,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:45:52,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2020-10-26 23:45:52,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1674. [2020-10-26 23:45:52,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1674 states. [2020-10-26 23:45:52,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2204 transitions. [2020-10-26 23:45:52,080 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2204 transitions. Word has length 133 [2020-10-26 23:45:52,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:45:52,081 INFO L481 AbstractCegarLoop]: Abstraction has 1674 states and 2204 transitions. [2020-10-26 23:45:52,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:45:52,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2204 transitions. [2020-10-26 23:45:52,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-26 23:45:52,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:45:52,085 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:45:52,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:45:52,086 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:45:52,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:45:52,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1790876743, now seen corresponding path program 1 times [2020-10-26 23:45:52,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:45:52,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210378343] [2020-10-26 23:45:52,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:45:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:52,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:52,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:52,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:53,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:57,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:57,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-26 23:45:57,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:45:57,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-26 23:45:57,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:57,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:45:57,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:45:57,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-26 23:45:57,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:57,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:57,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:57,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:57,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:57,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:57,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:45:57,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:57,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:57,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:57,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:45:57,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:57,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:45:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:57,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:57,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:57,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:57,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:45:57,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:45:57,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-26 23:45:57,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:57,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:57,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:57,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:45:57,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:45:57,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:45:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:57,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:58,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:58,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:45:58,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:58,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-26 23:45:58,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:58,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:58,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:58,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:45:58,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:58,524 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:45:58,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210378343] [2020-10-26 23:45:58,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:45:58,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:45:58,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104837571] [2020-10-26 23:45:58,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:45:58,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:45:58,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:45:58,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:45:58,529 INFO L87 Difference]: Start difference. First operand 1674 states and 2204 transitions. Second operand 9 states. [2020-10-26 23:46:13,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:46:13,478 INFO L93 Difference]: Finished difference Result 5638 states and 7883 transitions. [2020-10-26 23:46:13,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 23:46:13,480 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 228 [2020-10-26 23:46:13,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:46:13,508 INFO L225 Difference]: With dead ends: 5638 [2020-10-26 23:46:13,509 INFO L226 Difference]: Without dead ends: 4277 [2020-10-26 23:46:13,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-26 23:46:13,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2020-10-26 23:46:13,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 4247. [2020-10-26 23:46:13,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4247 states. [2020-10-26 23:46:13,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4247 states to 4247 states and 5347 transitions. [2020-10-26 23:46:13,654 INFO L78 Accepts]: Start accepts. Automaton has 4247 states and 5347 transitions. Word has length 228 [2020-10-26 23:46:13,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:46:13,655 INFO L481 AbstractCegarLoop]: Abstraction has 4247 states and 5347 transitions. [2020-10-26 23:46:13,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:46:13,655 INFO L276 IsEmpty]: Start isEmpty. Operand 4247 states and 5347 transitions. [2020-10-26 23:46:13,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-26 23:46:13,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:46:13,663 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:46:13,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:46:13,663 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:46:13,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:46:13,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1628102421, now seen corresponding path program 1 times [2020-10-26 23:46:13,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:46:13,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725915461] [2020-10-26 23:46:13,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:46:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:13,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:14,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:15,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:15,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-26 23:46:15,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:46:15,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2038 [2020-10-26 23:46:15,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:15,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:46:15,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:46:15,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 342 [2020-10-26 23:46:15,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:15,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:46:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:15,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:16,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:16,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:46:16,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:16,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:46:16,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:16,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:46:16,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:46:16,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:46:16,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:16,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:46:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:16,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:16,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:16,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:46:16,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:16,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-10-26 23:46:16,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:16,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:46:16,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:46:16,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-26 23:46:16,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:17,369 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:46:17,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725915461] [2020-10-26 23:46:17,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:46:17,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:46:17,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514827111] [2020-10-26 23:46:17,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:46:17,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:46:17,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:46:17,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:46:17,374 INFO L87 Difference]: Start difference. First operand 4247 states and 5347 transitions. Second operand 6 states. [2020-10-26 23:46:28,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:46:28,974 INFO L93 Difference]: Finished difference Result 10745 states and 13874 transitions. [2020-10-26 23:46:28,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:46:28,983 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 339 [2020-10-26 23:46:28,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:46:29,027 INFO L225 Difference]: With dead ends: 10745 [2020-10-26 23:46:29,028 INFO L226 Difference]: Without dead ends: 6811 [2020-10-26 23:46:29,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:46:29,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6811 states. [2020-10-26 23:46:29,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6811 to 6759. [2020-10-26 23:46:29,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6759 states. [2020-10-26 23:46:29,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6759 states to 6759 states and 8250 transitions. [2020-10-26 23:46:29,281 INFO L78 Accepts]: Start accepts. Automaton has 6759 states and 8250 transitions. Word has length 339 [2020-10-26 23:46:29,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:46:29,285 INFO L481 AbstractCegarLoop]: Abstraction has 6759 states and 8250 transitions. [2020-10-26 23:46:29,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:46:29,285 INFO L276 IsEmpty]: Start isEmpty. Operand 6759 states and 8250 transitions. [2020-10-26 23:46:29,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-10-26 23:46:29,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:46:29,294 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:46:29,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:46:29,294 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:46:29,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:46:29,295 INFO L82 PathProgramCache]: Analyzing trace with hash -780044874, now seen corresponding path program 1 times [2020-10-26 23:46:29,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:46:29,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862553836] [2020-10-26 23:46:29,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:46:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:29,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:29,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:29,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:30,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:31,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:34,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:34,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-26 23:46:34,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:46:34,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-26 23:46:34,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:34,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:46:34,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:46:34,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 353 [2020-10-26 23:46:34,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:34,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:46:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:34,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:34,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:34,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:46:34,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:34,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:46:34,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:34,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:46:34,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:46:34,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:46:34,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:34,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:46:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:34,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:34,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:34,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:34,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:46:34,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:46:34,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-26 23:46:34,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:46:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:46:34,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:46:34,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:46:35,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:46:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:35,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:35,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:36,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:36,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:46:36,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:46:36,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-10-26 23:46:36,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:36,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:46:36,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:46:36,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:46:36,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:36,513 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-10-26 23:46:36,668 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-10-26 23:46:36,801 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2020-10-26 23:46:37,608 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 35 proven. 146 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:46:37,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862553836] [2020-10-26 23:46:37,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:46:37,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:46:37,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19776530] [2020-10-26 23:46:37,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 23:46:37,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:46:37,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 23:46:37,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:46:37,611 INFO L87 Difference]: Start difference. First operand 6759 states and 8250 transitions. Second operand 12 states. [2020-10-26 23:46:39,342 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-10-26 23:46:39,751 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 84 [2020-10-26 23:46:39,982 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-10-26 23:46:42,751 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2020-10-26 23:46:43,299 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2020-10-26 23:46:43,554 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-10-26 23:46:45,131 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 75 [2020-10-26 23:46:46,105 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-10-26 23:46:49,939 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2020-10-26 23:46:55,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:46:55,617 INFO L93 Difference]: Finished difference Result 9595 states and 12476 transitions. [2020-10-26 23:46:55,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-26 23:46:55,620 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 348 [2020-10-26 23:46:55,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:46:55,673 INFO L225 Difference]: With dead ends: 9595 [2020-10-26 23:46:55,674 INFO L226 Difference]: Without dead ends: 9592 [2020-10-26 23:46:55,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=313, Invalid=877, Unknown=0, NotChecked=0, Total=1190 [2020-10-26 23:46:55,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9592 states. [2020-10-26 23:46:55,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9592 to 8454. [2020-10-26 23:46:55,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8454 states. [2020-10-26 23:46:55,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8454 states to 8454 states and 10809 transitions. [2020-10-26 23:46:55,975 INFO L78 Accepts]: Start accepts. Automaton has 8454 states and 10809 transitions. Word has length 348 [2020-10-26 23:46:55,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:46:55,976 INFO L481 AbstractCegarLoop]: Abstraction has 8454 states and 10809 transitions. [2020-10-26 23:46:55,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 23:46:55,976 INFO L276 IsEmpty]: Start isEmpty. Operand 8454 states and 10809 transitions. [2020-10-26 23:46:55,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2020-10-26 23:46:55,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:46:55,995 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:46:55,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:46:55,996 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:46:55,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:46:55,997 INFO L82 PathProgramCache]: Analyzing trace with hash 877176488, now seen corresponding path program 1 times [2020-10-26 23:46:55,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:46:55,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143915761] [2020-10-26 23:46:55,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:46:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:56,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:56,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:58,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:59,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:01,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:01,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 547 [2020-10-26 23:47:01,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:47:01,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-26 23:47:01,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:01,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:01,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:47:01,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 23:47:01,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:01,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:47:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:01,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:01,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:01,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:47:01,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:01,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:47:01,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:47:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:01,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:47:01,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:01,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:47:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:01,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:01,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:01,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:47:01,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:01,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-26 23:47:01,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:01,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:47:01,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:01,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:47:01,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:02,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:47:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:02,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:02,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:02,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:47:02,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:02,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-26 23:47:02,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:02,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:02,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:47:02,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:47:02,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:02,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-26 23:47:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:02,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:02,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:02,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-26 23:47:02,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:02,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:47:02,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:47:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-26 23:47:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:47:02,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 247 proven. 92 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-26 23:47:02,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143915761] [2020-10-26 23:47:02,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:47:02,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:47:02,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261124520] [2020-10-26 23:47:02,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:47:02,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:47:02,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:47:02,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:47:02,923 INFO L87 Difference]: Start difference. First operand 8454 states and 10809 transitions. Second operand 8 states. [2020-10-26 23:47:18,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:47:18,886 INFO L93 Difference]: Finished difference Result 18596 states and 23885 transitions. [2020-10-26 23:47:18,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:47:18,892 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 531 [2020-10-26 23:47:18,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:47:18,935 INFO L225 Difference]: With dead ends: 18596 [2020-10-26 23:47:18,935 INFO L226 Difference]: Without dead ends: 10455 [2020-10-26 23:47:18,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:47:18,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10455 states. [2020-10-26 23:47:19,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10455 to 10079. [2020-10-26 23:47:19,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10079 states. [2020-10-26 23:47:19,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10079 states to 10079 states and 12589 transitions. [2020-10-26 23:47:19,269 INFO L78 Accepts]: Start accepts. Automaton has 10079 states and 12589 transitions. Word has length 531 [2020-10-26 23:47:19,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:47:19,270 INFO L481 AbstractCegarLoop]: Abstraction has 10079 states and 12589 transitions. [2020-10-26 23:47:19,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:47:19,270 INFO L276 IsEmpty]: Start isEmpty. Operand 10079 states and 12589 transitions. [2020-10-26 23:47:19,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2020-10-26 23:47:19,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:47:19,293 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:47:19,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:47:19,293 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:47:19,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:47:19,294 INFO L82 PathProgramCache]: Analyzing trace with hash -2023809888, now seen corresponding path program 1 times [2020-10-26 23:47:19,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:47:19,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370476234] [2020-10-26 23:47:19,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:47:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:19,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:20,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:22,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:22,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:22,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 559 [2020-10-26 23:47:22,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:47:22,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2928 [2020-10-26 23:47:22,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:47:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:47:22,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:22,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:47:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:22,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:22,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:22,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:47:22,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:22,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:47:22,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:22,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:47:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:47:22,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:22,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:47:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:22,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:22,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:22,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:47:22,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:22,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:47:22,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:22,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:47:22,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:22,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:47:22,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:22,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:47:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:22,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:22,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:22,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:47:22,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:22,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 23:47:22,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:22,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:47:22,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:22,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:47:22,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:22,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:47:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:23,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:23,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:23,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-26 23:47:23,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:23,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-26 23:47:23,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:23,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:47:23,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-26 23:47:23,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:23,407 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 320 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:47:23,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370476234] [2020-10-26 23:47:23,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:47:23,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:47:23,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977455630] [2020-10-26 23:47:23,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:47:23,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:47:23,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:47:23,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:47:23,410 INFO L87 Difference]: Start difference. First operand 10079 states and 12589 transitions. Second operand 7 states. [2020-10-26 23:47:38,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:47:38,333 INFO L93 Difference]: Finished difference Result 22723 states and 29172 transitions. [2020-10-26 23:47:38,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:47:38,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 543 [2020-10-26 23:47:38,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:47:38,403 INFO L225 Difference]: With dead ends: 22723 [2020-10-26 23:47:38,403 INFO L226 Difference]: Without dead ends: 12957 [2020-10-26 23:47:38,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:47:38,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12957 states. [2020-10-26 23:47:38,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12957 to 11647. [2020-10-26 23:47:38,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11647 states. [2020-10-26 23:47:38,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11647 states to 11647 states and 14037 transitions. [2020-10-26 23:47:38,924 INFO L78 Accepts]: Start accepts. Automaton has 11647 states and 14037 transitions. Word has length 543 [2020-10-26 23:47:38,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:47:38,926 INFO L481 AbstractCegarLoop]: Abstraction has 11647 states and 14037 transitions. [2020-10-26 23:47:38,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:47:38,926 INFO L276 IsEmpty]: Start isEmpty. Operand 11647 states and 14037 transitions. [2020-10-26 23:47:38,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2020-10-26 23:47:38,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:47:38,955 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:47:38,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:47:38,955 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:47:38,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:47:38,956 INFO L82 PathProgramCache]: Analyzing trace with hash 197449916, now seen corresponding path program 1 times [2020-10-26 23:47:38,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:47:38,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521326399] [2020-10-26 23:47:38,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:47:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:39,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:39,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:40,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:42,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:43,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:43,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 594 [2020-10-26 23:47:43,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:47:43,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4435 [2020-10-26 23:47:43,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:43,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:47:43,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:47:43,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-26 23:47:43,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:43,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:47:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:43,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:43,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:43,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:47:43,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:43,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:47:43,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:43,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:47:43,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:43,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:47:43,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:43,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:47:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:43,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:43,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:43,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:47:43,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:43,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-26 23:47:43,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:43,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:47:43,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:43,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:47:43,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:44,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:47:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:44,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:44,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:44,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:47:44,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:44,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:47:44,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:44,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:47:44,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:44,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:47:44,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:44,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:47:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:44,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:44,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:44,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-26 23:47:44,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:44,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-26 23:47:44,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:44,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:44,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:47:44,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-26 23:47:44,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:44,634 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 323 proven. 46 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-26 23:47:44,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521326399] [2020-10-26 23:47:44,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:47:44,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:47:44,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979358673] [2020-10-26 23:47:44,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:47:44,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:47:44,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:47:44,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:47:44,638 INFO L87 Difference]: Start difference. First operand 11647 states and 14037 transitions. Second operand 6 states. [2020-10-26 23:47:58,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:47:58,324 INFO L93 Difference]: Finished difference Result 26042 states and 32345 transitions. [2020-10-26 23:47:58,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:47:58,327 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 578 [2020-10-26 23:47:58,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:47:58,402 INFO L225 Difference]: With dead ends: 26042 [2020-10-26 23:47:58,402 INFO L226 Difference]: Without dead ends: 14708 [2020-10-26 23:47:58,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:47:58,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14708 states. [2020-10-26 23:47:58,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14708 to 14263. [2020-10-26 23:47:58,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14263 states. [2020-10-26 23:47:58,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14263 states to 14263 states and 17494 transitions. [2020-10-26 23:47:58,917 INFO L78 Accepts]: Start accepts. Automaton has 14263 states and 17494 transitions. Word has length 578 [2020-10-26 23:47:58,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:47:58,918 INFO L481 AbstractCegarLoop]: Abstraction has 14263 states and 17494 transitions. [2020-10-26 23:47:58,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:47:58,919 INFO L276 IsEmpty]: Start isEmpty. Operand 14263 states and 17494 transitions. [2020-10-26 23:47:58,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2020-10-26 23:47:58,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:47:58,940 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:47:58,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:47:58,941 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:47:58,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:47:58,942 INFO L82 PathProgramCache]: Analyzing trace with hash 992328442, now seen corresponding path program 1 times [2020-10-26 23:47:58,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:47:58,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841905334] [2020-10-26 23:47:58,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:47:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:59,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:59,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:00,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:01,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:01,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:02,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:04,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:04,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 604 [2020-10-26 23:48:04,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:48:04,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-26 23:48:04,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:04,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:48:04,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-26 23:48:04,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-26 23:48:04,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:04,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:04,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:04,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:04,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:04,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:04,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:48:04,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:04,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:04,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:04,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:04,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:04,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:04,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:04,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:04,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:48:04,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:04,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-26 23:48:04,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:04,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:04,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:04,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-26 23:48:04,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:04,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:48:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:04,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:04,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:04,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 23:48:04,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:04,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-26 23:48:04,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:04,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:04,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:04,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 23:48:04,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:04,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2020-10-26 23:48:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:05,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:05,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:05,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-26 23:48:05,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:05,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 23:48:05,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:05,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:05,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:05,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-26 23:48:05,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 374 proven. 6 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-26 23:48:05,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841905334] [2020-10-26 23:48:05,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:48:05,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:48:05,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194075182] [2020-10-26 23:48:05,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:48:05,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:05,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:48:05,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:48:05,428 INFO L87 Difference]: Start difference. First operand 14263 states and 17494 transitions. Second operand 7 states. [2020-10-26 23:48:23,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:23,482 INFO L93 Difference]: Finished difference Result 33931 states and 42429 transitions. [2020-10-26 23:48:23,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:48:23,484 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 588 [2020-10-26 23:48:23,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:23,554 INFO L225 Difference]: With dead ends: 33931 [2020-10-26 23:48:23,554 INFO L226 Difference]: Without dead ends: 19981 [2020-10-26 23:48:23,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:48:23,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19981 states. [2020-10-26 23:48:24,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19981 to 19942. [2020-10-26 23:48:24,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19942 states. [2020-10-26 23:48:24,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19942 states to 19942 states and 24322 transitions. [2020-10-26 23:48:24,080 INFO L78 Accepts]: Start accepts. Automaton has 19942 states and 24322 transitions. Word has length 588 [2020-10-26 23:48:24,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:24,082 INFO L481 AbstractCegarLoop]: Abstraction has 19942 states and 24322 transitions. [2020-10-26 23:48:24,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:48:24,082 INFO L276 IsEmpty]: Start isEmpty. Operand 19942 states and 24322 transitions. [2020-10-26 23:48:24,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2020-10-26 23:48:24,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:24,101 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-26 23:48:24,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:48:24,102 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:24,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:24,102 INFO L82 PathProgramCache]: Analyzing trace with hash 220972175, now seen corresponding path program 1 times [2020-10-26 23:48:24,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:24,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807917621] [2020-10-26 23:48:24,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:24,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:24,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:24,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:24,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:26,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:29,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:29,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:29,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 615 [2020-10-26 23:48:29,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:48:29,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-26 23:48:29,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:29,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:29,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:48:29,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-26 23:48:29,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:29,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:29,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:29,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:29,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:29,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:29,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:48:29,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:29,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:29,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:29,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:29,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:29,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:29,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:29,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:29,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:48:29,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:29,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 23:48:29,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:29,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:29,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:29,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:48:29,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:29,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:48:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:29,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:29,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:29,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:48:29,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:29,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-26 23:48:29,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:29,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:48:29,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:30,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-26 23:48:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:30,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:30,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:30,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 23:48:30,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:30,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 23:48:30,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:30,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:30,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-26 23:48:30,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:30,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:30,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-10-26 23:48:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:30,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:30,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:30,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-26 23:48:30,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:30,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:48:30,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:30,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:30,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-26 23:48:30,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:30,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:30,658 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 280 proven. 241 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2020-10-26 23:48:30,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807917621] [2020-10-26 23:48:30,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:48:30,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:48:30,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718810986] [2020-10-26 23:48:30,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:48:30,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:30,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:48:30,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:48:30,660 INFO L87 Difference]: Start difference. First operand 19942 states and 24322 transitions. Second operand 7 states.