/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/Problem15_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:54:17,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:54:17,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:54:17,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:54:17,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:54:17,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:54:17,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:54:17,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:54:17,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:54:17,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:54:17,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:54:17,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:54:17,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:54:17,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:54:17,520 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:54:17,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:54:17,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:54:17,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:54:17,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:54:17,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:54:17,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:54:17,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:54:17,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:54:17,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:54:17,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:54:17,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:54:17,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:54:17,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:54:17,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:54:17,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:54:17,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:54:17,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:54:17,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:54:17,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:54:17,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:54:17,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:54:17,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:54:17,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:54:17,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:54:17,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:54:17,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:54:17,575 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 07:54:17,631 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:54:17,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:54:17,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:54:17,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:54:17,634 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:54:17,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:54:17,634 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:54:17,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:54:17,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:54:17,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:54:17,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:54:17,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:54:17,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:54:17,635 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:54:17,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:54:17,636 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:54:17,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:54:17,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:54:17,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:54:17,638 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:54:17,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:54:17,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:54:17,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:54:17,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:54:17,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:54:17,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:54:17,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:54:17,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:54:17,640 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:54:17,640 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:54:18,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:54:18,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:54:18,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:54:18,104 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:54:18,110 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:54:18,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label57.c [2020-10-29 07:54:18,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5a289da9/8d0b22664ab645a9919c8e0e5ed75852/FLAGdfba2531e [2020-10-29 07:54:19,154 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:54:19,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label57.c [2020-10-29 07:54:19,183 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5a289da9/8d0b22664ab645a9919c8e0e5ed75852/FLAGdfba2531e [2020-10-29 07:54:19,268 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5a289da9/8d0b22664ab645a9919c8e0e5ed75852 [2020-10-29 07:54:19,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:54:19,280 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:54:19,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:54:19,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:54:19,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:54:19,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:54:19" (1/1) ... [2020-10-29 07:54:19,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a8f9fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:19, skipping insertion in model container [2020-10-29 07:54:19,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:54:19" (1/1) ... [2020-10-29 07:54:19,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:54:19,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:54:20,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:54:20,411 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:54:20,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:54:20,749 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:54:20,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:20 WrapperNode [2020-10-29 07:54:20,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:54:20,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:54:20,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:54:20,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:54:20,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:20" (1/1) ... [2020-10-29 07:54:20,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:20" (1/1) ... [2020-10-29 07:54:20,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:20" (1/1) ... [2020-10-29 07:54:20,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:20" (1/1) ... [2020-10-29 07:54:20,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:20" (1/1) ... [2020-10-29 07:54:20,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:20" (1/1) ... [2020-10-29 07:54:20,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:20" (1/1) ... [2020-10-29 07:54:20,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:54:20,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:54:20,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:54:20,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:54:20,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:20" (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 07:54:21,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:54:21,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:54:21,108 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:54:21,108 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:54:21,109 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:54:21,109 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:54:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:54:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:54:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:54:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:54:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:54:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:54:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:54:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:54:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:54:21,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:54:21,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:54:21,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:54:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:54:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:54:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:54:24,708 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:54:24,709 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:54:24,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:54:24 BoogieIcfgContainer [2020-10-29 07:54:24,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:54:24,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:54:24,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:54:24,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:54:24,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:54:19" (1/3) ... [2020-10-29 07:54:24,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a678a3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:54:24, skipping insertion in model container [2020-10-29 07:54:24,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:20" (2/3) ... [2020-10-29 07:54:24,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a678a3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:54:24, skipping insertion in model container [2020-10-29 07:54:24,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:54:24" (3/3) ... [2020-10-29 07:54:24,721 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label57.c [2020-10-29 07:54:24,733 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:54:24,739 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:54:24,752 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:54:24,783 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:54:24,783 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:54:24,783 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:54:24,783 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:54:24,784 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:54:24,784 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:54:24,784 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:54:24,784 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:54:24,812 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:54:24,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 07:54:24,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:54:24,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:54:24,849 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:54:24,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:54:24,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1849784143, now seen corresponding path program 1 times [2020-10-29 07:54:24,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:54:24,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858059806] [2020-10-29 07:54:24,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:54:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:25,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:25,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:25,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 07:54:25,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:25,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 542 [2020-10-29 07:54:25,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:25,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:54:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:54:25,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 07:54:25,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:54:25,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:54:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:25,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:25,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:25,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:54:25,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:25,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:54:25,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:25,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:25,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:54:25,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:25,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:54:25,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:54:25,822 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 07:54:25,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858059806] [2020-10-29 07:54:25,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:54:25,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:54:25,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193170181] [2020-10-29 07:54:25,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:54:25,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:54:25,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:54:25,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:54:25,850 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-29 07:54:33,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:54:33,647 INFO L93 Difference]: Finished difference Result 1204 states and 2170 transitions. [2020-10-29 07:54:33,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:54:33,652 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-29 07:54:33,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:54:33,673 INFO L225 Difference]: With dead ends: 1204 [2020-10-29 07:54:33,673 INFO L226 Difference]: Without dead ends: 698 [2020-10-29 07:54:33,687 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 07:54:33,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-29 07:54:33,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 692. [2020-10-29 07:54:33,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-29 07:54:33,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1013 transitions. [2020-10-29 07:54:33,792 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1013 transitions. Word has length 48 [2020-10-29 07:54:33,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:54:33,793 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1013 transitions. [2020-10-29 07:54:33,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:54:33,793 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1013 transitions. [2020-10-29 07:54:33,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-29 07:54:33,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:54:33,800 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:33,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:54:33,800 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:54:33,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:54:33,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1158629786, now seen corresponding path program 1 times [2020-10-29 07:54:33,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:54:33,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926191621] [2020-10-29 07:54:33,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:54:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:33,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:34,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:35,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:35,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 07:54:35,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:54:35,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1902 [2020-10-29 07:54:35,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:35,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:35,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:54:35,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:54:35,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:54:35,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:54:35,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:54:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:35,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:35,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:35,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:54:35,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:35,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:54:35,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:35,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:35,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:54:35,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:35,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:54:35,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:54:35,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:54:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:35,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:36,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:36,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:54:36,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:36,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-29 07:54:36,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:36,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:36,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:36,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:54:36,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:54:36,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:36,243 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:54:36,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926191621] [2020-10-29 07:54:36,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:54:36,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:54:36,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668121821] [2020-10-29 07:54:36,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:54:36,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:54:36,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:54:36,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:54:36,247 INFO L87 Difference]: Start difference. First operand 692 states and 1013 transitions. Second operand 7 states. [2020-10-29 07:54:45,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:54:45,704 INFO L93 Difference]: Finished difference Result 1712 states and 2419 transitions. [2020-10-29 07:54:45,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:54:45,706 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2020-10-29 07:54:45,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:54:45,713 INFO L225 Difference]: With dead ends: 1712 [2020-10-29 07:54:45,713 INFO L226 Difference]: Without dead ends: 1026 [2020-10-29 07:54:45,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:54:45,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-10-29 07:54:45,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1015. [2020-10-29 07:54:45,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-10-29 07:54:45,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1368 transitions. [2020-10-29 07:54:45,771 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1368 transitions. Word has length 117 [2020-10-29 07:54:45,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:54:45,772 INFO L481 AbstractCegarLoop]: Abstraction has 1015 states and 1368 transitions. [2020-10-29 07:54:45,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:54:45,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1368 transitions. [2020-10-29 07:54:45,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 07:54:45,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:54:45,775 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:45,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:54:45,775 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:54:45,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:54:45,776 INFO L82 PathProgramCache]: Analyzing trace with hash 50359650, now seen corresponding path program 1 times [2020-10-29 07:54:45,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:54:45,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857652358] [2020-10-29 07:54:45,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:54:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:45,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:46,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:46,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:46,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:46,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 07:54:46,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:54:46,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 986 [2020-10-29 07:54:46,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:46,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:46,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:54:46,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:54:46,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:54:46,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:46,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:54:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:46,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:46,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:46,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:54:46,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:46,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:54:46,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:46,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:46,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:54:46,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:46,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:54:46,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:47,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:54:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:47,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:47,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:47,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:54:47,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:47,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 07:54:47,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:47,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:47,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:47,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:54:47,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:54:47,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:54:47,249 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:54:47,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857652358] [2020-10-29 07:54:47,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:54:47,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:54:47,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026599626] [2020-10-29 07:54:47,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:54:47,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:54:47,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:54:47,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:54:47,255 INFO L87 Difference]: Start difference. First operand 1015 states and 1368 transitions. Second operand 7 states. [2020-10-29 07:54:57,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:54:57,434 INFO L93 Difference]: Finished difference Result 2395 states and 3404 transitions. [2020-10-29 07:54:57,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:54:57,440 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-29 07:54:57,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:54:57,450 INFO L225 Difference]: With dead ends: 2395 [2020-10-29 07:54:57,450 INFO L226 Difference]: Without dead ends: 1693 [2020-10-29 07:54:57,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:54:57,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2020-10-29 07:54:57,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1347. [2020-10-29 07:54:57,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1347 states. [2020-10-29 07:54:57,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 1744 transitions. [2020-10-29 07:54:57,513 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 1744 transitions. Word has length 122 [2020-10-29 07:54:57,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:54:57,514 INFO L481 AbstractCegarLoop]: Abstraction has 1347 states and 1744 transitions. [2020-10-29 07:54:57,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:54:57,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 1744 transitions. [2020-10-29 07:54:57,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-29 07:54:57,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:54:57,521 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:54:57,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:54:57,521 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:54:57,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:54:57,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1207014216, now seen corresponding path program 1 times [2020-10-29 07:54:57,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:54:57,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654460365] [2020-10-29 07:54:57,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:54:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:57,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:57,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:57,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:58,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:59,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:01,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:02,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:02,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-29 07:55:02,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:55:02,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 07:55:02,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:02,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:02,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:55:02,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:55:02,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:55:02,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:02,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:02,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:02,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:02,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:02,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:02,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:55:02,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:02,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:55:02,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:02,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:02,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:02,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:02,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:55:02,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:02,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-29 07:55:02,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:02,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:02,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:02,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:02,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:55:02,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:03,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:55:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:03,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:03,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:03,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:55:03,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:03,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-29 07:55:03,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:03,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:03,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:03,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:03,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:55:03,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:03,393 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-29 07:55:03,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654460365] [2020-10-29 07:55:03,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:55:03,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:55:03,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746353791] [2020-10-29 07:55:03,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:55:03,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:03,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:55:03,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:55:03,397 INFO L87 Difference]: Start difference. First operand 1347 states and 1744 transitions. Second operand 7 states. [2020-10-29 07:55:13,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:13,017 INFO L93 Difference]: Finished difference Result 3740 states and 4969 transitions. [2020-10-29 07:55:13,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:55:13,021 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-10-29 07:55:13,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:13,036 INFO L225 Difference]: With dead ends: 3740 [2020-10-29 07:55:13,036 INFO L226 Difference]: Without dead ends: 2399 [2020-10-29 07:55:13,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 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 07:55:13,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2020-10-29 07:55:13,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 2295. [2020-10-29 07:55:13,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2295 states. [2020-10-29 07:55:13,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 2825 transitions. [2020-10-29 07:55:13,137 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 2825 transitions. Word has length 222 [2020-10-29 07:55:13,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:13,139 INFO L481 AbstractCegarLoop]: Abstraction has 2295 states and 2825 transitions. [2020-10-29 07:55:13,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:55:13,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 2825 transitions. [2020-10-29 07:55:13,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-29 07:55:13,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:13,150 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:55:13,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:55:13,150 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:13,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:13,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1728480236, now seen corresponding path program 1 times [2020-10-29 07:55:13,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:13,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239901903] [2020-10-29 07:55:13,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:13,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:13,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:14,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:18,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:18,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-29 07:55:18,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:55:18,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 07:55:18,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:18,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:55:18,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:55:18,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:55:18,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:18,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:18,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:18,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:18,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:18,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:18,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:55:18,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:18,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:18,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:18,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:55:18,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:55:18,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:18,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:18,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:18,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:55:18,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:18,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-10-29 07:55:18,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:18,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:18,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:18,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:18,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:55:18,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 07:55:19,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 07:55:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:19,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:19,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:19,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:55:19,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:19,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 07:55:19,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:19,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:19,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:55:19,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:55:19,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:55:19,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:20,016 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 80 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:55:20,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239901903] [2020-10-29 07:55:20,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:55:20,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:55:20,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192866769] [2020-10-29 07:55:20,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:55:20,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:20,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:55:20,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:55:20,020 INFO L87 Difference]: Start difference. First operand 2295 states and 2825 transitions. Second operand 7 states. [2020-10-29 07:55:28,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:28,061 INFO L93 Difference]: Finished difference Result 4949 states and 6040 transitions. [2020-10-29 07:55:28,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:55:28,064 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 328 [2020-10-29 07:55:28,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:28,078 INFO L225 Difference]: With dead ends: 4949 [2020-10-29 07:55:28,078 INFO L226 Difference]: Without dead ends: 2660 [2020-10-29 07:55:28,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:55:28,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2020-10-29 07:55:28,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2606. [2020-10-29 07:55:28,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2606 states. [2020-10-29 07:55:28,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2606 states to 2606 states and 3148 transitions. [2020-10-29 07:55:28,159 INFO L78 Accepts]: Start accepts. Automaton has 2606 states and 3148 transitions. Word has length 328 [2020-10-29 07:55:28,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:28,160 INFO L481 AbstractCegarLoop]: Abstraction has 2606 states and 3148 transitions. [2020-10-29 07:55:28,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:55:28,161 INFO L276 IsEmpty]: Start isEmpty. Operand 2606 states and 3148 transitions. [2020-10-29 07:55:28,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-29 07:55:28,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:28,169 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:55:28,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:55:28,169 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:28,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:28,170 INFO L82 PathProgramCache]: Analyzing trace with hash -2052151942, now seen corresponding path program 1 times [2020-10-29 07:55:28,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:28,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728246716] [2020-10-29 07:55:28,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:28,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:28,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:28,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:28,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:31,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:33,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:33,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-10-29 07:55:33,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:55:33,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 07:55:33,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:33,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:33,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:55:33,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:55:33,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-29 07:55:33,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:33,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:33,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:33,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:33,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:33,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:33,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:55:33,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:33,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:33,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:55:33,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:33,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:55:33,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:33,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:33,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:33,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:33,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:55:33,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:33,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 07:55:33,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:33,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:33,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:33,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:33,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:55:33,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:33,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:55:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:33,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:33,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:34,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:34,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:55:34,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:55:34,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 711 [2020-10-29 07:55:34,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:34,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:34,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:34,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:34,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:55:34,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:34,763 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 130 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:55:34,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728246716] [2020-10-29 07:55:34,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:55:34,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:55:34,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168892907] [2020-10-29 07:55:34,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:55:34,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:34,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:55:34,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:55:34,768 INFO L87 Difference]: Start difference. First operand 2606 states and 3148 transitions. Second operand 7 states. [2020-10-29 07:55:46,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:46,262 INFO L93 Difference]: Finished difference Result 6234 states and 7850 transitions. [2020-10-29 07:55:46,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:55:46,265 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 343 [2020-10-29 07:55:46,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:46,288 INFO L225 Difference]: With dead ends: 6234 [2020-10-29 07:55:46,288 INFO L226 Difference]: Without dead ends: 3301 [2020-10-29 07:55:46,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:55:46,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3301 states. [2020-10-29 07:55:46,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3301 to 3254. [2020-10-29 07:55:46,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3254 states. [2020-10-29 07:55:46,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3254 states to 3254 states and 3729 transitions. [2020-10-29 07:55:46,427 INFO L78 Accepts]: Start accepts. Automaton has 3254 states and 3729 transitions. Word has length 343 [2020-10-29 07:55:46,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:46,427 INFO L481 AbstractCegarLoop]: Abstraction has 3254 states and 3729 transitions. [2020-10-29 07:55:46,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:55:46,428 INFO L276 IsEmpty]: Start isEmpty. Operand 3254 states and 3729 transitions. [2020-10-29 07:55:46,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-10-29 07:55:46,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:46,440 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:55:46,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:55:46,440 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:46,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:46,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1847907918, now seen corresponding path program 1 times [2020-10-29 07:55:46,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:46,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234339578] [2020-10-29 07:55:46,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:46,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:47,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:48,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:48,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-10-29 07:55:48,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:55:48,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1607 [2020-10-29 07:55:48,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:48,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:48,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:48,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:55:48,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:55:48,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:48,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:48,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:48,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:48,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:48,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:48,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:55:48,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:48,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:48,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:55:48,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:48,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:55:48,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:55:48,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:48,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:48,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:48,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:55:48,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:48,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-29 07:55:48,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:48,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:48,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:48,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:48,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:55:48,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:48,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:55:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:48,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:49,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:49,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:55:49,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:49,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 07:55:49,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:49,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:49,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:49,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:49,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:55:49,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:49,373 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:55:49,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234339578] [2020-10-29 07:55:49,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:55:49,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:55:49,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746100603] [2020-10-29 07:55:49,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:55:49,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:49,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:55:49,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:55:49,375 INFO L87 Difference]: Start difference. First operand 3254 states and 3729 transitions. Second operand 7 states. [2020-10-29 07:55:57,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:57,723 INFO L93 Difference]: Finished difference Result 7882 states and 9340 transitions. [2020-10-29 07:55:57,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:55:57,725 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 407 [2020-10-29 07:55:57,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:57,747 INFO L225 Difference]: With dead ends: 7882 [2020-10-29 07:55:57,747 INFO L226 Difference]: Without dead ends: 4941 [2020-10-29 07:55:57,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 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 07:55:57,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4941 states. [2020-10-29 07:55:57,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4941 to 4871. [2020-10-29 07:55:57,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4871 states. [2020-10-29 07:55:57,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4871 states to 4871 states and 5492 transitions. [2020-10-29 07:55:57,875 INFO L78 Accepts]: Start accepts. Automaton has 4871 states and 5492 transitions. Word has length 407 [2020-10-29 07:55:57,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:57,876 INFO L481 AbstractCegarLoop]: Abstraction has 4871 states and 5492 transitions. [2020-10-29 07:55:57,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:55:57,876 INFO L276 IsEmpty]: Start isEmpty. Operand 4871 states and 5492 transitions. [2020-10-29 07:55:57,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-10-29 07:55:57,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:57,885 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:55:57,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:55:57,885 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:57,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:57,886 INFO L82 PathProgramCache]: Analyzing trace with hash 83959088, now seen corresponding path program 1 times [2020-10-29 07:55:57,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:57,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251541447] [2020-10-29 07:55:57,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:58,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:58,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:00,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:00,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 447 [2020-10-29 07:56:00,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:56:00,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2544 [2020-10-29 07:56:00,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:00,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:00,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:56:00,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:56:00,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:00,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:56:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:00,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:00,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:00,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:56:00,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:00,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:56:00,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:00,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:00,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:00,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:00,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:00,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:00,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:56:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:00,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:00,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:00,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:56:00,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:00,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-29 07:56:00,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:00,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:00,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:56:00,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:00,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:56:00,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:01,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:56:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:01,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:01,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:01,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:56:01,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:01,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 07:56:01,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:01,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:01,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:01,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:56:01,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:56:01,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:01,661 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:56:01,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251541447] [2020-10-29 07:56:01,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:56:01,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:56:01,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112811934] [2020-10-29 07:56:01,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:56:01,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:56:01,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:56:01,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:56:01,664 INFO L87 Difference]: Start difference. First operand 4871 states and 5492 transitions. Second operand 7 states. [2020-10-29 07:56:11,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:56:11,492 INFO L93 Difference]: Finished difference Result 11688 states and 13174 transitions. [2020-10-29 07:56:11,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:56:11,494 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 433 [2020-10-29 07:56:11,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:56:11,526 INFO L225 Difference]: With dead ends: 11688 [2020-10-29 07:56:11,526 INFO L226 Difference]: Without dead ends: 7130 [2020-10-29 07:56:11,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:56:11,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7130 states. [2020-10-29 07:56:11,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7130 to 6758. [2020-10-29 07:56:11,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6758 states. [2020-10-29 07:56:11,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6758 states to 6758 states and 7487 transitions. [2020-10-29 07:56:11,704 INFO L78 Accepts]: Start accepts. Automaton has 6758 states and 7487 transitions. Word has length 433 [2020-10-29 07:56:11,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:56:11,705 INFO L481 AbstractCegarLoop]: Abstraction has 6758 states and 7487 transitions. [2020-10-29 07:56:11,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:56:11,705 INFO L276 IsEmpty]: Start isEmpty. Operand 6758 states and 7487 transitions. [2020-10-29 07:56:11,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2020-10-29 07:56:11,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:56:11,716 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:56:11,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:56:11,716 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:56:11,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:56:11,717 INFO L82 PathProgramCache]: Analyzing trace with hash -81913176, now seen corresponding path program 1 times [2020-10-29 07:56:11,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:56:11,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464340139] [2020-10-29 07:56:11,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:56:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:11,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:12,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:12,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 459 [2020-10-29 07:56:12,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:12,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 695 [2020-10-29 07:56:12,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:12,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:12,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:12,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:56:12,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 07:56:12,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:12,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:56:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:12,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:12,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:12,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:56:12,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:12,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:56:12,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:12,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:12,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:12,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:12,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:12,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:12,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:56:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:12,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:12,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:12,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:56:12,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:12,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 07:56:12,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:12,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:12,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:12,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:56:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:12,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:13,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:13,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:56:13,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:13,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 07:56:13,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:13,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:13,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:56:13,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:13,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:56:13,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:13,198 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-29 07:56:13,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464340139] [2020-10-29 07:56:13,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:56:13,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:56:13,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661036038] [2020-10-29 07:56:13,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:56:13,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:56:13,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:56:13,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:56:13,201 INFO L87 Difference]: Start difference. First operand 6758 states and 7487 transitions. Second operand 5 states. [2020-10-29 07:56:20,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:56:20,846 INFO L93 Difference]: Finished difference Result 14774 states and 16785 transitions. [2020-10-29 07:56:20,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:56:20,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 445 [2020-10-29 07:56:20,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:56:20,882 INFO L225 Difference]: With dead ends: 14774 [2020-10-29 07:56:20,883 INFO L226 Difference]: Without dead ends: 8329 [2020-10-29 07:56:20,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 07:56:20,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8329 states. [2020-10-29 07:56:21,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8329 to 8323. [2020-10-29 07:56:21,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8323 states. [2020-10-29 07:56:21,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8323 states to 8323 states and 9389 transitions. [2020-10-29 07:56:21,085 INFO L78 Accepts]: Start accepts. Automaton has 8323 states and 9389 transitions. Word has length 445 [2020-10-29 07:56:21,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:56:21,087 INFO L481 AbstractCegarLoop]: Abstraction has 8323 states and 9389 transitions. [2020-10-29 07:56:21,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:56:21,087 INFO L276 IsEmpty]: Start isEmpty. Operand 8323 states and 9389 transitions. [2020-10-29 07:56:21,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-10-29 07:56:21,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:56:21,095 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:21,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:56:21,095 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:56:21,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:56:21,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1778479788, now seen corresponding path program 1 times [2020-10-29 07:56:21,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:56:21,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136756207] [2020-10-29 07:56:21,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:56:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:21,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:21,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:23,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:23,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:23,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 540 [2020-10-29 07:56:23,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:56:23,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1873 [2020-10-29 07:56:23,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:23,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:23,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:56:23,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:56:23,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 07:56:23,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:23,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:56:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:23,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:23,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:23,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:56:23,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:23,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:56:23,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:23,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:23,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:23,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:23,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:23,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:23,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:56:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:23,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:23,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:23,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:56:23,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:23,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 07:56:23,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:23,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:23,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:23,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:23,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:23,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:23,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:56:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:23,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:23,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:23,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:56:23,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:23,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 07:56:23,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:23,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:23,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:56:23,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:23,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:56:23,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:23,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:56:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:23,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:23,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:23,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:56:23,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:23,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 07:56:23,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:23,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:23,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:23,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:56:23,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:56:23,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:24,076 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 234 proven. 41 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-29 07:56:24,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136756207] [2020-10-29 07:56:24,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:56:24,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:56:24,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491087217] [2020-10-29 07:56:24,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:56:24,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:56:24,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:56:24,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:56:24,079 INFO L87 Difference]: Start difference. First operand 8323 states and 9389 transitions. Second operand 6 states. [2020-10-29 07:56:32,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:56:32,540 INFO L93 Difference]: Finished difference Result 18983 states and 21939 transitions. [2020-10-29 07:56:32,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:56:32,542 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 524 [2020-10-29 07:56:32,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:56:32,575 INFO L225 Difference]: With dead ends: 18983 [2020-10-29 07:56:32,576 INFO L226 Difference]: Without dead ends: 10973 [2020-10-29 07:56:32,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:56:32,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10973 states. [2020-10-29 07:56:32,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10973 to 10910. [2020-10-29 07:56:32,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10910 states. [2020-10-29 07:56:32,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10910 states to 10910 states and 12545 transitions. [2020-10-29 07:56:32,931 INFO L78 Accepts]: Start accepts. Automaton has 10910 states and 12545 transitions. Word has length 524 [2020-10-29 07:56:32,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:56:32,932 INFO L481 AbstractCegarLoop]: Abstraction has 10910 states and 12545 transitions. [2020-10-29 07:56:32,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:56:32,933 INFO L276 IsEmpty]: Start isEmpty. Operand 10910 states and 12545 transitions. [2020-10-29 07:56:32,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2020-10-29 07:56:32,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:56:32,945 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:32,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:56:32,945 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:56:32,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:56:32,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1798819622, now seen corresponding path program 1 times [2020-10-29 07:56:32,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:56:32,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335199470] [2020-10-29 07:56:32,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:56:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:33,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:33,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:34,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:34,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:36,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:36,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 562 [2020-10-29 07:56:36,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:56:36,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3689 [2020-10-29 07:56:36,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:36,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:36,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:56:36,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:56:36,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 07:56:36,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:36,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:56:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:36,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:36,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:36,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:56:36,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:36,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:56:36,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:36,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:36,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:36,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:36,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:36,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:36,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:56:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:36,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:37,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:37,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:56:37,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:37,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 07:56:37,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:37,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:37,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:37,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:37,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:37,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:37,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:56:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:37,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:37,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:37,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:56:37,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:37,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 07:56:37,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:37,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:37,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:56:37,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:37,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:56:37,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:37,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:56:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:37,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:37,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:37,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:37,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 07:56:37,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:56:37,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 07:56:37,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:37,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:37,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:37,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:56:37,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 07:56:37,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:37,753 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 278 proven. 41 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-29 07:56:37,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335199470] [2020-10-29 07:56:37,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:56:37,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:56:37,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715475066] [2020-10-29 07:56:37,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:56:37,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:56:37,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:56:37,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:56:37,756 INFO L87 Difference]: Start difference. First operand 10910 states and 12545 transitions. Second operand 6 states. [2020-10-29 07:56:46,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:56:46,876 INFO L93 Difference]: Finished difference Result 25361 states and 29952 transitions. [2020-10-29 07:56:46,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:56:46,878 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 546 [2020-10-29 07:56:46,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:56:46,933 INFO L225 Difference]: With dead ends: 25361 [2020-10-29 07:56:46,934 INFO L226 Difference]: Without dead ends: 13821 [2020-10-29 07:56:46,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:56:46,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13821 states. [2020-10-29 07:56:47,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13821 to 13775. [2020-10-29 07:56:47,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13775 states. [2020-10-29 07:56:47,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13775 states to 13775 states and 15859 transitions. [2020-10-29 07:56:47,345 INFO L78 Accepts]: Start accepts. Automaton has 13775 states and 15859 transitions. Word has length 546 [2020-10-29 07:56:47,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:56:47,346 INFO L481 AbstractCegarLoop]: Abstraction has 13775 states and 15859 transitions. [2020-10-29 07:56:47,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:56:47,347 INFO L276 IsEmpty]: Start isEmpty. Operand 13775 states and 15859 transitions. [2020-10-29 07:56:47,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2020-10-29 07:56:47,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:56:47,357 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:47,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:56:47,358 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:56:47,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:56:47,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1216692726, now seen corresponding path program 1 times [2020-10-29 07:56:47,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:56:47,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410444495] [2020-10-29 07:56:47,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:56:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:47,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:47,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:49,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:51,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:51,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 589 [2020-10-29 07:56:51,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:56:51,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4089 [2020-10-29 07:56:51,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:51,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:51,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:51,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:56:51,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 07:56:51,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:51,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:56:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:51,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:51,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:51,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:56:51,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:51,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:56:51,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:51,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:51,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:51,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:51,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:51,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:51,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:56:51,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:51,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:51,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:51,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:56:51,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:51,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 07:56:51,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:51,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:51,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:51,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:51,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:51,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:51,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:56:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:51,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:52,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:52,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:56:52,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:52,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 07:56:52,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:52,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:52,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:56:52,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:52,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:56:52,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:52,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:56:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:52,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:52,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:52,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 07:56:52,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:52,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-29 07:56:52,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:52,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:52,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:52,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:56:52,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 07:56:52,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:52,708 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 358 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:56:52,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410444495] [2020-10-29 07:56:52,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:56:52,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:56:52,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602296829] [2020-10-29 07:56:52,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:56:52,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:56:52,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:56:52,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:56:52,710 INFO L87 Difference]: Start difference. First operand 13775 states and 15859 transitions. Second operand 7 states. [2020-10-29 07:57:02,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:57:02,897 INFO L93 Difference]: Finished difference Result 33456 states and 39436 transitions. [2020-10-29 07:57:02,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:57:02,899 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 573 [2020-10-29 07:57:02,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:57:02,960 INFO L225 Difference]: With dead ends: 33456 [2020-10-29 07:57:02,960 INFO L226 Difference]: Without dead ends: 19994 [2020-10-29 07:57:02,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 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 07:57:03,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19994 states. [2020-10-29 07:57:03,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19994 to 18114. [2020-10-29 07:57:03,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18114 states. [2020-10-29 07:57:03,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18114 states to 18114 states and 21230 transitions. [2020-10-29 07:57:03,352 INFO L78 Accepts]: Start accepts. Automaton has 18114 states and 21230 transitions. Word has length 573 [2020-10-29 07:57:03,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:57:03,353 INFO L481 AbstractCegarLoop]: Abstraction has 18114 states and 21230 transitions. [2020-10-29 07:57:03,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:57:03,353 INFO L276 IsEmpty]: Start isEmpty. Operand 18114 states and 21230 transitions. [2020-10-29 07:57:03,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2020-10-29 07:57:03,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:57:03,363 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:03,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:57:03,364 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:57:03,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:57:03,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1626469420, now seen corresponding path program 1 times [2020-10-29 07:57:03,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:57:03,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894181369] [2020-10-29 07:57:03,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:57:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:03,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:03,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:06,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:07,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:07,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 610 [2020-10-29 07:57:07,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:57:07,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4321 [2020-10-29 07:57:07,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:07,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:07,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:57:07,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-29 07:57:07,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-29 07:57:07,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:08,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:57:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:08,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:08,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:08,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:57:08,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:08,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:57:08,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:08,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:08,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:08,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:08,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:08,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:57:08,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:57:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:08,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:08,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:08,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:57:08,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:08,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-29 07:57:08,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:08,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:08,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:57:08,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:08,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:57:08,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:08,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:57:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:08,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:08,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:08,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:57:08,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:08,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 07:57:08,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:08,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:08,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:57:08,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:57:08,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:57:08,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:08,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:57:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:08,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:08,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:08,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:57:08,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:08,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-29 07:57:08,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:08,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:08,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:08,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:57:08,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-29 07:57:08,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:09,386 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 378 proven. 110 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:57:09,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894181369] [2020-10-29 07:57:09,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:57:09,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 07:57:09,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090254897] [2020-10-29 07:57:09,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 07:57:09,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:57:09,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 07:57:09,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:57:09,389 INFO L87 Difference]: Start difference. First operand 18114 states and 21230 transitions. Second operand 10 states. [2020-10-29 07:57:15,390 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-10-29 07:57:26,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:57:26,695 INFO L93 Difference]: Finished difference Result 46301 states and 55193 transitions. [2020-10-29 07:57:26,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 07:57:26,698 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 594 [2020-10-29 07:57:26,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:57:26,782 INFO L225 Difference]: With dead ends: 46301 [2020-10-29 07:57:26,782 INFO L226 Difference]: Without dead ends: 28187 [2020-10-29 07:57:26,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2020-10-29 07:57:26,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28187 states. [2020-10-29 07:57:27,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28187 to 27517. [2020-10-29 07:57:27,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27517 states. [2020-10-29 07:57:27,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27517 states to 27517 states and 31927 transitions. [2020-10-29 07:57:27,318 INFO L78 Accepts]: Start accepts. Automaton has 27517 states and 31927 transitions. Word has length 594 [2020-10-29 07:57:27,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:57:27,319 INFO L481 AbstractCegarLoop]: Abstraction has 27517 states and 31927 transitions. [2020-10-29 07:57:27,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 07:57:27,319 INFO L276 IsEmpty]: Start isEmpty. Operand 27517 states and 31927 transitions. [2020-10-29 07:57:27,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2020-10-29 07:57:27,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:57:27,335 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:27,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 07:57:27,335 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:57:27,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:57:27,336 INFO L82 PathProgramCache]: Analyzing trace with hash 403819617, now seen corresponding path program 1 times [2020-10-29 07:57:27,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:57:27,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207426322] [2020-10-29 07:57:27,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:57:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:27,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:27,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:27,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:28,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:32,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:32,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 694 [2020-10-29 07:57:32,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:57:32,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 07:57:32,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:32,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:32,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:32,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-29 07:57:32,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-29 07:57:32,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:32,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:57:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:32,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:32,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:32,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:57:32,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:32,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:57:32,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:32,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:32,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:32,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:32,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:32,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:32,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:57:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:32,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:32,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:32,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 07:57:32,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:32,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-29 07:57:32,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:32,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:32,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:57:32,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:32,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-29 07:57:32,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:33,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-29 07:57:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:33,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:33,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:33,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:57:33,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:33,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-29 07:57:33,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:33,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:33,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:33,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:57:33,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:57:33,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:33,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-10-29 07:57:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:33,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:33,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:33,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 07:57:33,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:33,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 07:57:33,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:33,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:33,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:33,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-10-29 07:57:33,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:33,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:34,075 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 321 proven. 192 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2020-10-29 07:57:34,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207426322] [2020-10-29 07:57:34,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:57:34,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:57:34,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117433358] [2020-10-29 07:57:34,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:57:34,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:57:34,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:57:34,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:57:34,077 INFO L87 Difference]: Start difference. First operand 27517 states and 31927 transitions. Second operand 7 states. [2020-10-29 07:57:43,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:57:43,353 INFO L93 Difference]: Finished difference Result 57548 states and 66642 transitions. [2020-10-29 07:57:43,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:57:43,354 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 678 [2020-10-29 07:57:43,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:57:43,442 INFO L225 Difference]: With dead ends: 57548 [2020-10-29 07:57:43,442 INFO L226 Difference]: Without dead ends: 29722 [2020-10-29 07:57:43,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:57:43,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29722 states. [2020-10-29 07:57:43,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29722 to 29070. [2020-10-29 07:57:43,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29070 states. [2020-10-29 07:57:44,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29070 states to 29070 states and 33531 transitions. [2020-10-29 07:57:44,030 INFO L78 Accepts]: Start accepts. Automaton has 29070 states and 33531 transitions. Word has length 678 [2020-10-29 07:57:44,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:57:44,031 INFO L481 AbstractCegarLoop]: Abstraction has 29070 states and 33531 transitions. [2020-10-29 07:57:44,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:57:44,031 INFO L276 IsEmpty]: Start isEmpty. Operand 29070 states and 33531 transitions. [2020-10-29 07:57:44,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2020-10-29 07:57:44,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:57:44,047 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:44,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 07:57:44,047 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:57:44,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:57:44,048 INFO L82 PathProgramCache]: Analyzing trace with hash 982053529, now seen corresponding path program 1 times [2020-10-29 07:57:44,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:57:44,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584380460] [2020-10-29 07:57:44,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:57:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:44,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:44,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:46,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:47,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:48,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:48,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 740 [2020-10-29 07:57:48,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:57:48,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4711 [2020-10-29 07:57:48,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:48,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:48,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:57:48,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 573 [2020-10-29 07:57:48,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-29 07:57:48,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:49,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:57:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:49,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:49,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:49,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:57:49,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:49,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:57:49,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:49,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:49,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:49,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:49,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:49,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:49,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:57:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:49,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:49,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:49,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:57:49,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:49,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 07:57:49,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:49,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:49,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:49,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:49,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:49,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:49,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:57:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:49,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:49,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:49,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 07:57:49,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:49,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 07:57:49,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:49,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:49,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:49,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:49,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:49,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:49,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-29 07:57:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:49,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:49,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:49,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:57:49,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:49,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 07:57:49,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:49,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:57:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:57:49,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:49,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-10-29 07:57:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:49,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:49,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:49,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:49,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 07:57:49,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:57:49,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-29 07:57:49,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:49,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:49,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:57:49,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:49,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 07:57:49,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:49,973 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 174 proven. 4 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2020-10-29 07:57:49,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584380460] [2020-10-29 07:57:49,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:57:49,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:57:49,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270886847] [2020-10-29 07:57:49,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:57:49,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:57:49,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:57:49,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:57:49,976 INFO L87 Difference]: Start difference. First operand 29070 states and 33531 transitions. Second operand 5 states.