/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:41:06,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:41:06,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:41:06,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:41:06,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:41:06,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:41:06,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:41:06,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:41:06,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:41:06,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:41:06,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:41:06,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:41:06,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:41:06,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:41:06,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:41:06,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:41:06,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:41:06,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:41:06,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:41:06,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:41:06,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:41:06,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:41:06,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:41:06,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:41:06,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:41:06,550 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:41:06,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:41:06,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:41:06,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:41:06,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:41:06,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:41:06,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:41:06,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:41:06,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:41:06,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:41:06,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:41:06,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:41:06,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:41:06,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:41:06,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:41:06,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:41:06,571 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 [2020-10-29 08:41:06,630 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:41:06,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:41:06,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:41:06,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:41:06,632 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:41:06,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:41:06,633 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:41:06,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:41:06,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:41:06,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:41:06,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:41:06,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:41:06,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:41:06,634 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:41:06,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:41:06,634 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:41:06,635 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:41:06,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:41:06,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:41:06,635 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:41:06,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:41:06,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:41:06,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:41:06,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:41:06,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:41:06,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:41:06,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:41:06,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:41:06,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:41:06,637 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:41:07,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:41:07,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:41:07,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:41:07,064 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:41:07,065 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:41:07,066 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label58.c [2020-10-29 08:41:07,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d5b2da21/7d81a8c40f93467dac1842c295c364bd/FLAG2efe57b82 [2020-10-29 08:41:08,193 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:41:08,194 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label58.c [2020-10-29 08:41:08,225 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d5b2da21/7d81a8c40f93467dac1842c295c364bd/FLAG2efe57b82 [2020-10-29 08:41:08,713 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d5b2da21/7d81a8c40f93467dac1842c295c364bd [2020-10-29 08:41:08,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:41:08,726 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:41:08,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:41:08,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:41:08,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:41:08,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:41:08" (1/1) ... [2020-10-29 08:41:08,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2da179a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:41:08, skipping insertion in model container [2020-10-29 08:41:08,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:41:08" (1/1) ... [2020-10-29 08:41:08,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:41:08,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:41:09,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:41:09,983 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:41:10,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:41:10,561 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:41:10,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:41:10 WrapperNode [2020-10-29 08:41:10,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:41:10,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:41:10,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:41:10,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:41:10,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:41:10" (1/1) ... [2020-10-29 08:41:10,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:41:10" (1/1) ... [2020-10-29 08:41:10,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:41:10" (1/1) ... [2020-10-29 08:41:10,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:41:10" (1/1) ... [2020-10-29 08:41:10,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:41:10" (1/1) ... [2020-10-29 08:41:10,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:41:10" (1/1) ... [2020-10-29 08:41:10,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:41:10" (1/1) ... [2020-10-29 08:41:10,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:41:10,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:41:10,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:41:10,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:41:10,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:41:10" (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 [2020-10-29 08:41:10,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:41:10,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:41:10,987 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:41:10,987 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:41:10,987 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:41:10,987 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:41:10,988 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:41:10,988 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:41:10,988 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:41:10,988 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:41:10,990 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:41:10,990 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:41:10,991 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:41:10,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:41:10,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:41:10,993 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:41:10,993 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:41:10,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:41:10,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:41:10,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:41:10,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:41:10,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:41:10,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:41:15,230 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:41:15,231 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:41:15,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:41:15 BoogieIcfgContainer [2020-10-29 08:41:15,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:41:15,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:41:15,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:41:15,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:41:15,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:41:08" (1/3) ... [2020-10-29 08:41:15,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ff187b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:41:15, skipping insertion in model container [2020-10-29 08:41:15,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:41:10" (2/3) ... [2020-10-29 08:41:15,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ff187b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:41:15, skipping insertion in model container [2020-10-29 08:41:15,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:41:15" (3/3) ... [2020-10-29 08:41:15,248 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label58.c [2020-10-29 08:41:15,260 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:41:15,267 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:41:15,283 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:41:15,342 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:41:15,342 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:41:15,342 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:41:15,343 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:41:15,343 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:41:15,343 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:41:15,343 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:41:15,343 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:41:15,391 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-29 08:41:15,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 08:41:15,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:41:15,401 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] [2020-10-29 08:41:15,402 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:41:15,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:41:15,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1974208840, now seen corresponding path program 1 times [2020-10-29 08:41:15,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:41:15,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262202896] [2020-10-29 08:41:15,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:41:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:15,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:16,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:16,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 08:41:16,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:16,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-10-29 08:41:16,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:16,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:16,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:41:16,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:41:16,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 08:41:16,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-29 08:41:16,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:41:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:16,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:16,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:16,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:41:16,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:16,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 08:41:16,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:16,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:16,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:41:16,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:41:16,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:41:16,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:41:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:41:16,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262202896] [2020-10-29 08:41:16,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:41:16,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:41:16,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715562108] [2020-10-29 08:41:16,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:41:16,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:41:16,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:41:16,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:41:16,625 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-29 08:41:26,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:41:26,112 INFO L93 Difference]: Finished difference Result 2275 states and 4355 transitions. [2020-10-29 08:41:26,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:41:26,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-29 08:41:26,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:41:26,148 INFO L225 Difference]: With dead ends: 2275 [2020-10-29 08:41:26,150 INFO L226 Difference]: Without dead ends: 1433 [2020-10-29 08:41:26,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:41:26,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-29 08:41:26,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1426. [2020-10-29 08:41:26,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-10-29 08:41:26,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2230 transitions. [2020-10-29 08:41:26,316 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2230 transitions. Word has length 47 [2020-10-29 08:41:26,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:41:26,317 INFO L481 AbstractCegarLoop]: Abstraction has 1426 states and 2230 transitions. [2020-10-29 08:41:26,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:41:26,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2230 transitions. [2020-10-29 08:41:26,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-29 08:41:26,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:41:26,323 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:41:26,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:41:26,324 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:41:26,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:41:26,325 INFO L82 PathProgramCache]: Analyzing trace with hash 918546129, now seen corresponding path program 1 times [2020-10-29 08:41:26,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:41:26,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630154035] [2020-10-29 08:41:26,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:41:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:26,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:26,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:27,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:27,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 08:41:27,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:41:27,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 904 [2020-10-29 08:41:27,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:27,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:27,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:41:27,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:41:27,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:41:27,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:41:27,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:41:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:27,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:27,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:27,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:41:27,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:27,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:41:27,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:27,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:27,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:41:27,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:41:27,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:41:27,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:41:27,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:41:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:27,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:27,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:27,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:41:27,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:27,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-29 08:41:27,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:27,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:27,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:41:27,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:41:27,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 08:41:27,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:41:27,766 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:41:27,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630154035] [2020-10-29 08:41:27,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:41:27,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:41:27,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648934772] [2020-10-29 08:41:27,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:41:27,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:41:27,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:41:27,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:41:27,773 INFO L87 Difference]: Start difference. First operand 1426 states and 2230 transitions. Second operand 7 states. [2020-10-29 08:41:39,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:41:39,756 INFO L93 Difference]: Finished difference Result 4357 states and 6857 transitions. [2020-10-29 08:41:39,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:41:39,757 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2020-10-29 08:41:39,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:41:39,776 INFO L225 Difference]: With dead ends: 4357 [2020-10-29 08:41:39,777 INFO L226 Difference]: Without dead ends: 2937 [2020-10-29 08:41:39,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:41:39,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2020-10-29 08:41:39,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2887. [2020-10-29 08:41:39,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2887 states. [2020-10-29 08:41:39,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 3988 transitions. [2020-10-29 08:41:39,964 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 3988 transitions. Word has length 117 [2020-10-29 08:41:39,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:41:39,967 INFO L481 AbstractCegarLoop]: Abstraction has 2887 states and 3988 transitions. [2020-10-29 08:41:39,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:41:39,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 3988 transitions. [2020-10-29 08:41:39,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-29 08:41:39,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:41:39,981 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:41:39,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:41:39,981 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:41:39,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:41:39,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1439829965, now seen corresponding path program 1 times [2020-10-29 08:41:39,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:41:39,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235097565] [2020-10-29 08:41:39,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:41:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:40,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:40,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:41,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:41,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-29 08:41:41,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:41:41,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1364 [2020-10-29 08:41:41,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:41,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:41,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:41:41,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:41:41,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 08:41:41,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:41:41,606 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 08:41:41,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:41:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:41,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:41,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:41,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:41:41,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:41,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 08:41:41,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:41,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:41,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:41:41,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:41:41,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:41:41,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:41:41,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:41:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:41,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:41,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:41,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-29 08:41:41,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:41,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 08:41:41,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:41,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:41,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:41:41,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:41:41,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 08:41:41,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:41:42,039 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:41:42,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235097565] [2020-10-29 08:41:42,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:41:42,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:41:42,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917284454] [2020-10-29 08:41:42,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:41:42,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:41:42,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:41:42,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:41:42,045 INFO L87 Difference]: Start difference. First operand 2887 states and 3988 transitions. Second operand 7 states. [2020-10-29 08:41:54,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:41:54,200 INFO L93 Difference]: Finished difference Result 8872 states and 12449 transitions. [2020-10-29 08:41:54,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:41:54,201 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2020-10-29 08:41:54,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:41:54,244 INFO L225 Difference]: With dead ends: 8872 [2020-10-29 08:41:54,244 INFO L226 Difference]: Without dead ends: 5991 [2020-10-29 08:41:54,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:41:54,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5991 states. [2020-10-29 08:41:54,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5991 to 5851. [2020-10-29 08:41:54,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5851 states. [2020-10-29 08:41:54,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5851 states to 5851 states and 7291 transitions. [2020-10-29 08:41:54,481 INFO L78 Accepts]: Start accepts. Automaton has 5851 states and 7291 transitions. Word has length 179 [2020-10-29 08:41:54,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:41:54,483 INFO L481 AbstractCegarLoop]: Abstraction has 5851 states and 7291 transitions. [2020-10-29 08:41:54,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:41:54,488 INFO L276 IsEmpty]: Start isEmpty. Operand 5851 states and 7291 transitions. [2020-10-29 08:41:54,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-29 08:41:54,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:41:54,494 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:41:54,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:41:54,495 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:41:54,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:41:54,495 INFO L82 PathProgramCache]: Analyzing trace with hash 905188576, now seen corresponding path program 1 times [2020-10-29 08:41:54,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:41:54,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671388746] [2020-10-29 08:41:54,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:41:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:54,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:54,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:55,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:57,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:57,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-29 08:41:57,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:41:57,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3024 [2020-10-29 08:41:57,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:57,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:57,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:41:57,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:41:57,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 08:41:57,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:41:57,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:41:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:57,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:57,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:57,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:41:57,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:57,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:41:57,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:57,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:57,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:41:57,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:41:57,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:41:57,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:41:57,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:41:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:57,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:57,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:57,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:41:57,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:57,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-29 08:41:57,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:57,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:57,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:41:57,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:41:57,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 08:41:57,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 08:41:58,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-29 08:41:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:58,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:58,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:58,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:41:58,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:58,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 08:41:58,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:58,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:58,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:41:58,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 08:41:58,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:41:58,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:41:58,865 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 78 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 08:41:58,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671388746] [2020-10-29 08:41:58,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:41:58,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:41:58,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67988259] [2020-10-29 08:41:58,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:41:58,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:41:58,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:41:58,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:41:58,868 INFO L87 Difference]: Start difference. First operand 5851 states and 7291 transitions. Second operand 7 states. [2020-10-29 08:42:09,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:42:09,061 INFO L93 Difference]: Finished difference Result 12491 states and 15444 transitions. [2020-10-29 08:42:09,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 08:42:09,067 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-10-29 08:42:09,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:42:09,104 INFO L225 Difference]: With dead ends: 12491 [2020-10-29 08:42:09,104 INFO L226 Difference]: Without dead ends: 6646 [2020-10-29 08:42:09,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:42:09,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6646 states. [2020-10-29 08:42:09,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6646 to 6589. [2020-10-29 08:42:09,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6589 states. [2020-10-29 08:42:09,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6589 states to 6589 states and 8053 transitions. [2020-10-29 08:42:09,307 INFO L78 Accepts]: Start accepts. Automaton has 6589 states and 8053 transitions. Word has length 242 [2020-10-29 08:42:09,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:42:09,309 INFO L481 AbstractCegarLoop]: Abstraction has 6589 states and 8053 transitions. [2020-10-29 08:42:09,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:42:09,309 INFO L276 IsEmpty]: Start isEmpty. Operand 6589 states and 8053 transitions. [2020-10-29 08:42:09,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2020-10-29 08:42:09,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:42:09,319 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:42:09,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:42:09,319 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:42:09,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:42:09,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1219702079, now seen corresponding path program 1 times [2020-10-29 08:42:09,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:42:09,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202134042] [2020-10-29 08:42:09,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:42:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:09,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:09,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:09,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:12,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:14,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:14,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 444 [2020-10-29 08:42:14,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:42:14,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 08:42:14,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:14,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:14,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:42:14,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-29 08:42:14,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 08:42:14,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:42:14,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:42:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:14,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:14,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:14,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:42:14,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:14,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:42:14,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:14,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:14,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:42:14,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:42:14,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:42:14,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:42:14,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:42:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:14,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:14,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:14,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-29 08:42:14,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:14,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 08:42:14,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:14,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:14,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:42:14,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:42:14,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-29 08:42:14,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:42:14,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-29 08:42:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:14,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:15,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:15,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:42:15,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:15,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-29 08:42:15,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:15,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:15,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:42:15,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:42:15,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 08:42:15,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:42:15,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-29 08:42:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:15,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:15,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:15,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:42:15,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:15,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 08:42:15,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:15,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:15,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:42:15,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 08:42:15,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:42:15,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:42:15,830 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 240 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-29 08:42:15,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202134042] [2020-10-29 08:42:15,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:42:15,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:42:15,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635992077] [2020-10-29 08:42:15,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:42:15,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:42:15,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:42:15,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:42:15,834 INFO L87 Difference]: Start difference. First operand 6589 states and 8053 transitions. Second operand 7 states. [2020-10-29 08:42:29,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:42:29,205 INFO L93 Difference]: Finished difference Result 15606 states and 19818 transitions. [2020-10-29 08:42:29,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:42:29,210 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 428 [2020-10-29 08:42:29,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:42:29,251 INFO L225 Difference]: With dead ends: 15606 [2020-10-29 08:42:29,251 INFO L226 Difference]: Without dead ends: 8173 [2020-10-29 08:42:29,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:42:29,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8173 states. [2020-10-29 08:42:29,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8173 to 8062. [2020-10-29 08:42:29,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8062 states. [2020-10-29 08:42:29,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8062 states to 8062 states and 8902 transitions. [2020-10-29 08:42:29,458 INFO L78 Accepts]: Start accepts. Automaton has 8062 states and 8902 transitions. Word has length 428 [2020-10-29 08:42:29,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:42:29,459 INFO L481 AbstractCegarLoop]: Abstraction has 8062 states and 8902 transitions. [2020-10-29 08:42:29,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:42:29,459 INFO L276 IsEmpty]: Start isEmpty. Operand 8062 states and 8902 transitions. [2020-10-29 08:42:29,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2020-10-29 08:42:29,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:42:29,491 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:42:29,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:42:29,491 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:42:29,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:42:29,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1715501084, now seen corresponding path program 1 times [2020-10-29 08:42:29,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:42:29,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185569755] [2020-10-29 08:42:29,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:42:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:29,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:30,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:30,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:34,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:34,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 911 [2020-10-29 08:42:34,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:42:34,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 08:42:34,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:34,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:34,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 08:42:34,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:42:34,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 661 [2020-10-29 08:42:34,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:42:34,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:42:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:34,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:34,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:34,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:42:34,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:34,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:42:34,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:34,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:34,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:42:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:42:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:42:34,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 08:42:34,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:42:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:35,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:36,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:36,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:42:36,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:36,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1095 [2020-10-29 08:42:36,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:36,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:36,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:42:36,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:42:36,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 532 [2020-10-29 08:42:36,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:42:36,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:42:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:36,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:36,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:36,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:42:36,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:36,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-10-29 08:42:36,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:36,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:36,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:42:36,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:42:36,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-29 08:42:36,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:42:37,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:42:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:37,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:37,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:37,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:42:37,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:37,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 08:42:37,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:37,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:37,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:42:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:42:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 08:42:37,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:42:38,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:42:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:38,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:38,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:38,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:42:38,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:38,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 08:42:38,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:38,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:38,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:42:38,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:42:38,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 08:42:38,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:42:38,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-29 08:42:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:38,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:38,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:38,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 08:42:38,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:38,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 08:42:38,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:38,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:42:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 08:42:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:42:38,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:42:38,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2020-10-29 08:42:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:38,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:38,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:38,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:42:38,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:38,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 08:42:38,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:38,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:38,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:42:38,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 08:42:38,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:42:38,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:42:39,694 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 165 proven. 483 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-29 08:42:39,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185569755] [2020-10-29 08:42:39,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:42:39,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:42:39,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942680511] [2020-10-29 08:42:39,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:42:39,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:42:39,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:42:39,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:42:39,698 INFO L87 Difference]: Start difference. First operand 8062 states and 8902 transitions. Second operand 8 states. [2020-10-29 08:42:47,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:42:47,546 INFO L93 Difference]: Finished difference Result 16341 states and 18074 transitions. [2020-10-29 08:42:47,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 08:42:47,548 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 889 [2020-10-29 08:42:47,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:42:47,591 INFO L225 Difference]: With dead ends: 16341 [2020-10-29 08:42:47,591 INFO L226 Difference]: Without dead ends: 8987 [2020-10-29 08:42:47,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:42:47,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8987 states. [2020-10-29 08:42:47,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8987 to 8804. [2020-10-29 08:42:47,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8804 states. [2020-10-29 08:42:47,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8804 states to 8804 states and 9652 transitions. [2020-10-29 08:42:47,809 INFO L78 Accepts]: Start accepts. Automaton has 8804 states and 9652 transitions. Word has length 889 [2020-10-29 08:42:47,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:42:47,811 INFO L481 AbstractCegarLoop]: Abstraction has 8804 states and 9652 transitions. [2020-10-29 08:42:47,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:42:47,811 INFO L276 IsEmpty]: Start isEmpty. Operand 8804 states and 9652 transitions. [2020-10-29 08:42:47,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 972 [2020-10-29 08:42:47,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:42:47,853 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:42:47,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:42:47,853 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:42:47,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:42:47,854 INFO L82 PathProgramCache]: Analyzing trace with hash 270526183, now seen corresponding path program 1 times [2020-10-29 08:42:47,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:42:47,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284717836] [2020-10-29 08:42:47,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:42:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:48,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:48,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:53,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:53,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 993 [2020-10-29 08:42:53,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:42:53,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5111 [2020-10-29 08:42:53,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:53,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:53,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:42:53,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-29 08:42:53,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 08:42:53,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:42:53,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:42:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:53,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:53,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:53,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:42:53,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:53,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:42:53,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:53,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:53,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:42:53,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:42:53,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:42:53,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:42:53,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:42:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:53,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:53,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:53,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:42:53,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:53,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-29 08:42:53,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:53,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:53,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:42:53,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:42:53,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:42:53,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:42:53,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:42:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:53,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:53,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:53,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:42:53,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:53,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 08:42:53,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:53,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:53,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:42:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:42:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:42:53,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:42:54,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:42:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:54,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:54,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:54,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:42:54,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:54,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:42:54,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:54,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:54,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:42:54,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:42:54,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:42:54,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:42:54,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:42:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:54,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:54,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:54,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:42:54,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:54,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 08:42:54,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:54,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:54,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:42:54,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:42:54,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-29 08:42:54,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:42:54,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:42:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:54,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:54,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:54,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:42:54,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:54,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 08:42:54,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:54,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:54,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:42:54,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:42:54,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 08:42:54,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:42:54,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:42:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:54,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:54,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:54,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 08:42:54,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:54,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 08:42:54,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:54,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:54,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:42:54,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:42:54,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 08:42:54,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:42:55,233 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-29 08:42:55,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284717836] [2020-10-29 08:42:55,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:42:55,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:42:55,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217912332] [2020-10-29 08:42:55,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:42:55,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:42:55,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:42:55,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:42:55,237 INFO L87 Difference]: Start difference. First operand 8804 states and 9652 transitions. Second operand 7 states. [2020-10-29 08:43:03,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:43:03,867 INFO L93 Difference]: Finished difference Result 20020 states and 22661 transitions. [2020-10-29 08:43:03,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:43:03,868 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 971 [2020-10-29 08:43:03,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:43:03,909 INFO L225 Difference]: With dead ends: 20020 [2020-10-29 08:43:03,909 INFO L226 Difference]: Without dead ends: 12634 [2020-10-29 08:43:03,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:43:03,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12634 states. [2020-10-29 08:43:04,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12634 to 12519. [2020-10-29 08:43:04,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12519 states. [2020-10-29 08:43:04,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12519 states to 12519 states and 13963 transitions. [2020-10-29 08:43:04,189 INFO L78 Accepts]: Start accepts. Automaton has 12519 states and 13963 transitions. Word has length 971 [2020-10-29 08:43:04,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:43:04,191 INFO L481 AbstractCegarLoop]: Abstraction has 12519 states and 13963 transitions. [2020-10-29 08:43:04,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:43:04,191 INFO L276 IsEmpty]: Start isEmpty. Operand 12519 states and 13963 transitions. [2020-10-29 08:43:04,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1069 [2020-10-29 08:43:04,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:43:04,210 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:43:04,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:43:04,210 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:43:04,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:43:04,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1679048218, now seen corresponding path program 1 times [2020-10-29 08:43:04,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:43:04,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184507751] [2020-10-29 08:43:04,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:43:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:04,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:04,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:05,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:09,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:09,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1092 [2020-10-29 08:43:09,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:43:09,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-29 08:43:09,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:09,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:43:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 930 [2020-10-29 08:43:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 08:43:09,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:09,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:43:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:09,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:09,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:09,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:43:09,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:09,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:43:09,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:09,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:09,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:43:09,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:09,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:43:09,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:09,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:43:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:09,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:10,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:10,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:43:10,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:10,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-29 08:43:10,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:10,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:10,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:43:10,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:10,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:43:10,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:10,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:43:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:10,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:10,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:10,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:43:10,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:10,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 08:43:10,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:10,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:10,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:43:10,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:10,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:43:10,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:10,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:43:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:10,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:10,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:10,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:43:10,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:10,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:43:10,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:10,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:10,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:43:10,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:10,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:43:10,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:10,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:43:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:10,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:10,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:10,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:43:10,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:10,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 08:43:10,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:10,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:10,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:43:10,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:10,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:43:10,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:10,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:43:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:10,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:10,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:10,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:43:10,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:10,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:43:10,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:10,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:10,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:43:10,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:10,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:43:10,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:10,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:43:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:10,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:10,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:10,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 08:43:10,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:10,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 08:43:10,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:10,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:10,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:43:10,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:10,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 08:43:10,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:10,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-29 08:43:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:10,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:10,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:10,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 08:43:10,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:10,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-29 08:43:10,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:10,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:10,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:43:10,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:43:10,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 08:43:10,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:43:11,809 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 455 proven. 2 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2020-10-29 08:43:11,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184507751] [2020-10-29 08:43:11,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:43:11,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:43:11,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417159594] [2020-10-29 08:43:11,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:43:11,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:43:11,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:43:11,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:43:11,813 INFO L87 Difference]: Start difference. First operand 12519 states and 13963 transitions. Second operand 8 states. [2020-10-29 08:43:27,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:43:27,134 INFO L93 Difference]: Finished difference Result 30156 states and 34925 transitions. [2020-10-29 08:43:27,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 08:43:27,138 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1068 [2020-10-29 08:43:27,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:43:27,199 INFO L225 Difference]: With dead ends: 30156 [2020-10-29 08:43:27,199 INFO L226 Difference]: Without dead ends: 19055 [2020-10-29 08:43:27,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-29 08:43:27,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19055 states. [2020-10-29 08:43:27,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19055 to 18291. [2020-10-29 08:43:27,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18291 states. [2020-10-29 08:43:27,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18291 states to 18291 states and 20228 transitions. [2020-10-29 08:43:27,631 INFO L78 Accepts]: Start accepts. Automaton has 18291 states and 20228 transitions. Word has length 1068 [2020-10-29 08:43:27,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:43:27,633 INFO L481 AbstractCegarLoop]: Abstraction has 18291 states and 20228 transitions. [2020-10-29 08:43:27,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:43:27,633 INFO L276 IsEmpty]: Start isEmpty. Operand 18291 states and 20228 transitions. [2020-10-29 08:43:27,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1136 [2020-10-29 08:43:27,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:43:27,653 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:43:27,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:43:27,654 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:43:27,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:43:27,654 INFO L82 PathProgramCache]: Analyzing trace with hash 315833286, now seen corresponding path program 1 times [2020-10-29 08:43:27,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:43:27,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159792583] [2020-10-29 08:43:27,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:43:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:28,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:29,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:29,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1159 [2020-10-29 08:43:29,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:29,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1788 [2020-10-29 08:43:29,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:29,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:29,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:43:29,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-29 08:43:29,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 08:43:29,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:30,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:43:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:30,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:30,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:30,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:43:30,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:30,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:43:30,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:30,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:30,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:43:30,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:30,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:43:30,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:30,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:43:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:30,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:30,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:30,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:43:30,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:30,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 08:43:30,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:30,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:30,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:43:30,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:30,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:43:30,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:30,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:43:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:30,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:30,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:30,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:43:30,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:30,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 08:43:30,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:30,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:30,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:43:30,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:30,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:43:30,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:30,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:43:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:30,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:30,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:30,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:43:30,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:30,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:43:30,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:30,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:30,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:43:30,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:30,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:43:30,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:30,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:43:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:30,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:30,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:30,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:43:30,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:30,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 08:43:30,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:30,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:30,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:43:30,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:30,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:43:30,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:30,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:43:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:30,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:30,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:30,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:43:30,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:30,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 08:43:30,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:30,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:30,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:43:30,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:30,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:43:30,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:30,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:43:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:30,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:30,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:30,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 08:43:30,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:30,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 08:43:30,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:30,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:30,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:43:30,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:30,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:43:30,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:31,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-29 08:43:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:31,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:31,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:31,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 08:43:31,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:31,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 08:43:31,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:31,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:43:31,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:31,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 08:43:31,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:31,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 161 proven. 4 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2020-10-29 08:43:31,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159792583] [2020-10-29 08:43:31,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:43:31,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:43:31,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339378356] [2020-10-29 08:43:31,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:43:31,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:43:31,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:43:31,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:43:31,848 INFO L87 Difference]: Start difference. First operand 18291 states and 20228 transitions. Second operand 5 states. [2020-10-29 08:43:41,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:43:41,021 INFO L93 Difference]: Finished difference Result 49398 states and 55634 transitions. [2020-10-29 08:43:41,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:43:41,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1135 [2020-10-29 08:43:41,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:43:41,131 INFO L225 Difference]: With dead ends: 49398 [2020-10-29 08:43:41,131 INFO L226 Difference]: Without dead ends: 31815 [2020-10-29 08:43:41,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:43:41,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31815 states. [2020-10-29 08:43:41,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31815 to 31108. [2020-10-29 08:43:41,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31108 states. [2020-10-29 08:43:41,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31108 states to 31108 states and 34172 transitions. [2020-10-29 08:43:41,747 INFO L78 Accepts]: Start accepts. Automaton has 31108 states and 34172 transitions. Word has length 1135 [2020-10-29 08:43:41,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:43:41,749 INFO L481 AbstractCegarLoop]: Abstraction has 31108 states and 34172 transitions. [2020-10-29 08:43:41,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:43:41,749 INFO L276 IsEmpty]: Start isEmpty. Operand 31108 states and 34172 transitions. [2020-10-29 08:43:41,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1163 [2020-10-29 08:43:41,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:43:41,773 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:43:41,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:43:41,774 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:43:41,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:43:41,775 INFO L82 PathProgramCache]: Analyzing trace with hash -326569826, now seen corresponding path program 1 times [2020-10-29 08:43:41,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:43:41,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279128001] [2020-10-29 08:43:41,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:43:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:42,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:42,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:45,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:46,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:47,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:47,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1186 [2020-10-29 08:43:47,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:43:47,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 08:43:47,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:47,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:47,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:43:47,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 976 [2020-10-29 08:43:47,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-29 08:43:47,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:47,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:43:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:47,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:47,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:47,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:43:47,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:47,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:43:47,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:47,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:43:47,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:47,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:43:47,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:47,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:43:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:47,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:47,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:47,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:43:47,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:47,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 08:43:47,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:47,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:47,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:43:47,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:47,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:43:47,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:47,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:43:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:47,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:47,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:47,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:43:47,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:47,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 08:43:47,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:47,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:47,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:43:47,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:47,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:43:47,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:47,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:43:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:47,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:47,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:47,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:43:47,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:47,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:43:47,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:47,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:47,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:43:47,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:47,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:43:47,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:47,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:43:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:47,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:47,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:47,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:43:47,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:47,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 08:43:47,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:47,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:47,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:43:47,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:47,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:43:47,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:48,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:43:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:48,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:48,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:48,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:43:48,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:48,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 08:43:48,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:48,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:48,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:43:48,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:48,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:43:48,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:48,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:43:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:48,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:48,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:48,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:43:48,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:48,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 08:43:48,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:48,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:48,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:43:48,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:48,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 08:43:48,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:48,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-29 08:43:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:48,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:48,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:48,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 08:43:48,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:48,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 08:43:48,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:48,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:48,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:43:48,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:43:48,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-29 08:43:48,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:49,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 597 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2020-10-29 08:43:49,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279128001] [2020-10-29 08:43:49,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:43:49,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:43:49,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824178599] [2020-10-29 08:43:49,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:43:49,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:43:49,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:43:49,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:43:49,094 INFO L87 Difference]: Start difference. First operand 31108 states and 34172 transitions. Second operand 7 states. [2020-10-29 08:44:01,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:44:01,318 INFO L93 Difference]: Finished difference Result 74325 states and 83507 transitions. [2020-10-29 08:44:01,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:44:01,319 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1162 [2020-10-29 08:44:01,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:44:01,496 INFO L225 Difference]: With dead ends: 74325 [2020-10-29 08:44:01,496 INFO L226 Difference]: Without dead ends: 43933 [2020-10-29 08:44:01,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:44:01,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43933 states. [2020-10-29 08:44:02,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43933 to 43876. [2020-10-29 08:44:02,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43876 states. [2020-10-29 08:44:02,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43876 states to 43876 states and 48353 transitions. [2020-10-29 08:44:02,470 INFO L78 Accepts]: Start accepts. Automaton has 43876 states and 48353 transitions. Word has length 1162 [2020-10-29 08:44:02,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:44:02,471 INFO L481 AbstractCegarLoop]: Abstraction has 43876 states and 48353 transitions. [2020-10-29 08:44:02,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:44:02,472 INFO L276 IsEmpty]: Start isEmpty. Operand 43876 states and 48353 transitions. [2020-10-29 08:44:02,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1227 [2020-10-29 08:44:02,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:44:02,500 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:44:02,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 08:44:02,500 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:44:02,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:44:02,501 INFO L82 PathProgramCache]: Analyzing trace with hash -648574690, now seen corresponding path program 1 times [2020-10-29 08:44:02,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:44:02,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479782477] [2020-10-29 08:44:02,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:44:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:03,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:03,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:04,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:08,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:08,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1250 [2020-10-29 08:44:08,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:44:08,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-29 08:44:08,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:08,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:08,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:44:08,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 976 [2020-10-29 08:44:08,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-29 08:44:08,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:08,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:44:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:08,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:08,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:08,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:44:08,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:08,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:44:08,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:08,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:08,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:44:08,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:44:08,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:44:08,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:08,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:44:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:08,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:08,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:08,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:44:08,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:08,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 08:44:08,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:08,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:44:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:44:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:44:08,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:08,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:44:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:08,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:08,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:08,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:44:08,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:08,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 08:44:08,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:08,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:08,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:44:08,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:44:08,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:44:08,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:08,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:44:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:08,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:08,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:08,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:44:08,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:08,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:44:08,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:08,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:08,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:44:08,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:44:08,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:44:08,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:08,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:44:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:08,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:08,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:08,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:44:08,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:08,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 08:44:08,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:08,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:08,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:44:08,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:44:08,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:44:08,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:08,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:44:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:08,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:08,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:08,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:44:08,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:08,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:44:08,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:08,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:08,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:44:08,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:44:08,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:44:08,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:09,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:44:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:09,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:09,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:09,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:44:09,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:09,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 08:44:09,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:09,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:09,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:44:09,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:44:09,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 08:44:09,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:09,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-29 08:44:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:09,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:09,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:09,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 08:44:09,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:09,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-29 08:44:09,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:09,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:09,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:44:09,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:44:09,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-29 08:44:09,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:10,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 725 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2020-10-29 08:44:10,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479782477] [2020-10-29 08:44:10,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:44:10,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:44:10,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312872398] [2020-10-29 08:44:10,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:44:10,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:44:10,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:44:10,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:44:10,925 INFO L87 Difference]: Start difference. First operand 43876 states and 48353 transitions. Second operand 7 states. [2020-10-29 08:44:23,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:44:23,609 INFO L93 Difference]: Finished difference Result 87099 states and 96130 transitions. [2020-10-29 08:44:23,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 08:44:23,612 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1226 [2020-10-29 08:44:23,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:44:23,919 INFO L225 Difference]: With dead ends: 87099 [2020-10-29 08:44:23,919 INFO L226 Difference]: Without dead ends: 43939 [2020-10-29 08:44:23,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:44:24,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43939 states. [2020-10-29 08:44:24,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43939 to 43897. [2020-10-29 08:44:24,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43897 states. [2020-10-29 08:44:24,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43897 states to 43897 states and 48343 transitions. [2020-10-29 08:44:24,738 INFO L78 Accepts]: Start accepts. Automaton has 43897 states and 48343 transitions. Word has length 1226 [2020-10-29 08:44:24,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:44:24,740 INFO L481 AbstractCegarLoop]: Abstraction has 43897 states and 48343 transitions. [2020-10-29 08:44:24,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:44:24,740 INFO L276 IsEmpty]: Start isEmpty. Operand 43897 states and 48343 transitions. [2020-10-29 08:44:24,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1265 [2020-10-29 08:44:24,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:44:24,769 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:44:24,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 08:44:24,770 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:44:24,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:44:24,770 INFO L82 PathProgramCache]: Analyzing trace with hash 920745805, now seen corresponding path program 1 times [2020-10-29 08:44:24,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:44:24,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924636562] [2020-10-29 08:44:24,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:44:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:25,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:25,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:27,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:27,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:30,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:30,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1290 [2020-10-29 08:44:30,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:44:30,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-10-29 08:44:30,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:30,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:30,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:44:30,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-29 08:44:30,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 08:44:30,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:30,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:44:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:30,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:30,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:30,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:44:30,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:30,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:44:30,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:30,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:30,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:44:30,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:44:30,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:44:30,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:30,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:44:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:30,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:30,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:30,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:44:30,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:30,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 08:44:30,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:30,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:30,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:44:30,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:44:30,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:44:30,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:30,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:44:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:30,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:30,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:30,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:44:30,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:30,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 08:44:30,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:30,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:30,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:44:30,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:44:30,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:44:30,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:30,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:44:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:30,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:30,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:30,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:44:30,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:30,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:44:30,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:30,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:44:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:44:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:44:30,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:30,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:44:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:31,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:31,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:31,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:44:31,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:31,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-29 08:44:31,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:31,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:31,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:44:31,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:44:31,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-29 08:44:31,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:31,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:44:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:31,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:31,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:31,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:44:31,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:31,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 08:44:31,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:31,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:31,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:44:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:44:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 08:44:31,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:31,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:44:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:31,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:31,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:31,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:44:31,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:31,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 08:44:31,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:31,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:31,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:44:31,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:44:31,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 08:44:31,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:31,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-29 08:44:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:31,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:31,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:31,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 08:44:31,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:31,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 08:44:31,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:31,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:31,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:44:31,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-29 08:44:31,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:44:31,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:31,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1088 [2020-10-29 08:44:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:31,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:31,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:31,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 08:44:31,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:31,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 08:44:31,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:31,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:44:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-29 08:44:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:44:31,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:32,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1636 backedges. 457 proven. 240 refuted. 0 times theorem prover too weak. 939 trivial. 0 not checked. [2020-10-29 08:44:32,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924636562] [2020-10-29 08:44:32,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:44:32,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:44:32,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956171428] [2020-10-29 08:44:32,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:44:32,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:44:32,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:44:32,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:44:32,657 INFO L87 Difference]: Start difference. First operand 43897 states and 48343 transitions. Second operand 7 states.