/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:31:20,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:31:20,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:31:20,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:31:20,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:31:20,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:31:20,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:31:20,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:31:20,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:31:20,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:31:20,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:31:20,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:31:20,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:31:20,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:31:20,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:31:20,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:31:20,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:31:20,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:31:20,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:31:20,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:31:20,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:31:20,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:31:20,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:31:20,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:31:20,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:31:20,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:31:20,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:31:20,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:31:20,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:31:20,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:31:20,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:31:20,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:31:20,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:31:20,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:31:20,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:31:20,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:31:20,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:31:20,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:31:20,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:31:20,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:31:20,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:31:20,239 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 08:31:20,290 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:31:20,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:31:20,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:31:20,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:31:20,295 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:31:20,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:31:20,295 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:31:20,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:31:20,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:31:20,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:31:20,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:31:20,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:31:20,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:31:20,298 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:31:20,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:31:20,299 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:31:20,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:31:20,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:31:20,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:31:20,300 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:31:20,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:31:20,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:31:20,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:31:20,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:31:20,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:31:20,301 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:31:20,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:31:20,302 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:31:20,302 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:31:20,302 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:31:20,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:31:20,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:31:20,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:31:20,747 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:31:20,754 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:31:20,756 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label19.c [2020-10-29 08:31:20,842 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a529e9d29/886451af6b834ed394b177d829c2fe32/FLAGb1a9e33f4 [2020-10-29 08:31:21,769 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:31:21,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label19.c [2020-10-29 08:31:21,806 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a529e9d29/886451af6b834ed394b177d829c2fe32/FLAGb1a9e33f4 [2020-10-29 08:31:22,292 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a529e9d29/886451af6b834ed394b177d829c2fe32 [2020-10-29 08:31:22,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:31:22,304 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:31:22,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:31:22,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:31:22,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:31:22,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:31:22" (1/1) ... [2020-10-29 08:31:22,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63e85d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:31:22, skipping insertion in model container [2020-10-29 08:31:22,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:31:22" (1/1) ... [2020-10-29 08:31:22,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:31:22,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:31:23,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:31:23,699 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:31:24,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:31:24,262 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:31:24,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:31:24 WrapperNode [2020-10-29 08:31:24,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:31:24,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:31:24,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:31:24,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:31:24,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:31:24" (1/1) ... [2020-10-29 08:31:24,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:31:24" (1/1) ... [2020-10-29 08:31:24,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:31:24" (1/1) ... [2020-10-29 08:31:24,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:31:24" (1/1) ... [2020-10-29 08:31:24,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:31:24" (1/1) ... [2020-10-29 08:31:24,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:31:24" (1/1) ... [2020-10-29 08:31:24,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:31:24" (1/1) ... [2020-10-29 08:31:24,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:31:24,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:31:24,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:31:24,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:31:24,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:31:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:31:24,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:31:24,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:31:24,710 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:31:24,710 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:31:24,710 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:31:24,710 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:31:24,710 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:31:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:31:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:31:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:31:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:31:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:31:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:31:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:31:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:31:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:31:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:31:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:31:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:31:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:31:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:31:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:31:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:31:28,786 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:31:28,787 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:31:28,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:31:28 BoogieIcfgContainer [2020-10-29 08:31:28,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:31:28,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:31:28,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:31:28,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:31:28,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:31:22" (1/3) ... [2020-10-29 08:31:28,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649d6f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:31:28, skipping insertion in model container [2020-10-29 08:31:28,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:31:24" (2/3) ... [2020-10-29 08:31:28,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649d6f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:31:28, skipping insertion in model container [2020-10-29 08:31:28,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:31:28" (3/3) ... [2020-10-29 08:31:28,803 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label19.c [2020-10-29 08:31:28,816 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:31:28,821 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:31:28,835 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:31:28,868 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:31:28,868 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:31:28,869 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:31:28,869 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:31:28,869 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:31:28,869 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:31:28,869 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:31:28,869 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:31:28,903 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-29 08:31:28,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-29 08:31:28,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:31:28,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:31:28,910 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:31:28,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:31:28,916 INFO L82 PathProgramCache]: Analyzing trace with hash 710293960, now seen corresponding path program 1 times [2020-10-29 08:31:28,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:31:28,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253106748] [2020-10-29 08:31:28,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:31:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:29,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:29,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:29,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 08:31:29,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:29,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-10-29 08:31:29,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:29,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:29,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:31:29,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:31:29,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 08:31:29,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:31:29,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:31:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:29,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:29,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:29,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:31:29,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:29,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 08:31:29,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:29,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:29,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:31:29,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:29,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:31:29,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:31:29,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:31:29,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253106748] [2020-10-29 08:31:29,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:31:29,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 08:31:29,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871138578] [2020-10-29 08:31:29,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:31:29,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:31:29,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:31:29,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:31:29,736 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-29 08:31:41,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:31:41,273 INFO L93 Difference]: Finished difference Result 2989 states and 5775 transitions. [2020-10-29 08:31:41,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:31:41,275 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-29 08:31:41,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:31:41,308 INFO L225 Difference]: With dead ends: 2989 [2020-10-29 08:31:41,308 INFO L226 Difference]: Without dead ends: 2143 [2020-10-29 08:31:41,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:31:41,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-29 08:31:41,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-29 08:31:41,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-29 08:31:41,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3572 transitions. [2020-10-29 08:31:41,539 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3572 transitions. Word has length 16 [2020-10-29 08:31:41,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:31:41,540 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3572 transitions. [2020-10-29 08:31:41,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:31:41,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3572 transitions. [2020-10-29 08:31:41,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 08:31:41,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:31:41,546 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 08:31:41,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:31:41,547 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:31:41,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:31:41,549 INFO L82 PathProgramCache]: Analyzing trace with hash -72286686, now seen corresponding path program 1 times [2020-10-29 08:31:41,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:31:41,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505953244] [2020-10-29 08:31:41,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:31:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:41,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:41,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:42,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:42,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 08:31:42,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:31:42,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 855 [2020-10-29 08:31:42,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:42,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:42,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:31:42,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:31:42,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 08:31:42,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:31:42,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:31:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:42,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:42,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:42,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:31:42,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:42,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 08:31:42,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:42,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:42,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:31:42,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:42,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:31:42,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 08:31:42,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:31:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:42,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:42,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:42,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:31:42,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:42,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 08:31:42,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:42,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:42,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:31:42,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:31:42,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:31:42,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:42,875 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:31:42,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505953244] [2020-10-29 08:31:42,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:31:42,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 08:31:42,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446167912] [2020-10-29 08:31:42,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:31:42,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:31:42,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:31:42,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:31:42,882 INFO L87 Difference]: Start difference. First operand 2136 states and 3572 transitions. Second operand 8 states. [2020-10-29 08:31:51,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:31:51,732 INFO L93 Difference]: Finished difference Result 5047 states and 8287 transitions. [2020-10-29 08:31:51,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 08:31:51,735 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-10-29 08:31:51,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:31:51,759 INFO L225 Difference]: With dead ends: 5047 [2020-10-29 08:31:51,759 INFO L226 Difference]: Without dead ends: 2917 [2020-10-29 08:31:51,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:31:51,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2020-10-29 08:31:51,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2880. [2020-10-29 08:31:51,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2020-10-29 08:31:51,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 4329 transitions. [2020-10-29 08:31:51,878 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 4329 transitions. Word has length 87 [2020-10-29 08:31:51,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:31:51,878 INFO L481 AbstractCegarLoop]: Abstraction has 2880 states and 4329 transitions. [2020-10-29 08:31:51,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:31:51,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 4329 transitions. [2020-10-29 08:31:51,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-29 08:31:51,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:31:51,896 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 08:31:51,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:31:51,896 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:31:51,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:31:51,897 INFO L82 PathProgramCache]: Analyzing trace with hash -894980336, now seen corresponding path program 1 times [2020-10-29 08:31:51,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:31:51,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401445735] [2020-10-29 08:31:51,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:31:51,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:52,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:52,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:53,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:53,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 08:31:53,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:31:53,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1222 [2020-10-29 08:31:53,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:53,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:53,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:31:53,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:31:53,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-29 08:31:53,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:31:53,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:31:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:53,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:53,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:53,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:31:53,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:53,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:31:53,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:53,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:53,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:31:53,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:53,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:31:53,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:53,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:31:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:53,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:53,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:53,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 08:31:53,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:53,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-29 08:31:53,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:53,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:53,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:31:53,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:31:53,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-29 08:31:53,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:53,913 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:31:53,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401445735] [2020-10-29 08:31:53,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:31:53,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:31:53,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176901518] [2020-10-29 08:31:53,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:31:53,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:31:53,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:31:53,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:31:53,916 INFO L87 Difference]: Start difference. First operand 2880 states and 4329 transitions. Second operand 7 states. [2020-10-29 08:32:02,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:32:02,694 INFO L93 Difference]: Finished difference Result 8757 states and 13284 transitions. [2020-10-29 08:32:02,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:32:02,698 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-10-29 08:32:02,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:32:02,727 INFO L225 Difference]: With dead ends: 8757 [2020-10-29 08:32:02,727 INFO L226 Difference]: Without dead ends: 5883 [2020-10-29 08:32:02,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:32:02,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5883 states. [2020-10-29 08:32:02,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5883 to 5091. [2020-10-29 08:32:02,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5091 states. [2020-10-29 08:32:02,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5091 states to 5091 states and 6833 transitions. [2020-10-29 08:32:02,878 INFO L78 Accepts]: Start accepts. Automaton has 5091 states and 6833 transitions. Word has length 166 [2020-10-29 08:32:02,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:32:02,879 INFO L481 AbstractCegarLoop]: Abstraction has 5091 states and 6833 transitions. [2020-10-29 08:32:02,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:32:02,879 INFO L276 IsEmpty]: Start isEmpty. Operand 5091 states and 6833 transitions. [2020-10-29 08:32:02,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-29 08:32:02,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:32:02,882 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:32:02,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:32:02,882 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:32:02,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:32:02,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1939123938, now seen corresponding path program 1 times [2020-10-29 08:32:02,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:32:02,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12950805] [2020-10-29 08:32:02,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:32:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:02,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:03,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:04,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:04,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-29 08:32:04,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:32:04,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1194 [2020-10-29 08:32:04,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:04,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:04,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:32:04,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:32:04,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 08:32:04,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:04,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:32:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:04,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:04,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:04,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:32:04,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:04,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 08:32:04,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:04,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:04,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:04,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:04,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:32:04,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:04,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:32:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:04,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:04,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:04,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 08:32:04,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:04,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-29 08:32:04,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:04,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:04,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:04,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:32:04,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 08:32:04,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:32:04,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-29 08:32:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:04,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:04,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:04,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:32:04,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:04,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 08:32:04,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:04,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:04,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:04,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 08:32:04,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:04,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:32:04,591 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 08:32:04,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12950805] [2020-10-29 08:32:04,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:32:04,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:32:04,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005324255] [2020-10-29 08:32:04,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:32:04,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:32:04,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:32:04,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:32:04,595 INFO L87 Difference]: Start difference. First operand 5091 states and 6833 transitions. Second operand 7 states. [2020-10-29 08:32:13,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:32:13,116 INFO L93 Difference]: Finished difference Result 11245 states and 15549 transitions. [2020-10-29 08:32:13,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:32:13,117 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 177 [2020-10-29 08:32:13,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:32:13,161 INFO L225 Difference]: With dead ends: 11245 [2020-10-29 08:32:13,161 INFO L226 Difference]: Without dead ends: 6160 [2020-10-29 08:32:13,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:32:13,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6160 states. [2020-10-29 08:32:13,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6160 to 5846. [2020-10-29 08:32:13,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5846 states. [2020-10-29 08:32:13,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5846 states to 5846 states and 7646 transitions. [2020-10-29 08:32:13,385 INFO L78 Accepts]: Start accepts. Automaton has 5846 states and 7646 transitions. Word has length 177 [2020-10-29 08:32:13,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:32:13,387 INFO L481 AbstractCegarLoop]: Abstraction has 5846 states and 7646 transitions. [2020-10-29 08:32:13,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:32:13,387 INFO L276 IsEmpty]: Start isEmpty. Operand 5846 states and 7646 transitions. [2020-10-29 08:32:13,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-29 08:32:13,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:32:13,393 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:32:13,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:32:13,393 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:32:13,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:32:13,394 INFO L82 PathProgramCache]: Analyzing trace with hash 2045959552, now seen corresponding path program 1 times [2020-10-29 08:32:13,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:32:13,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124616009] [2020-10-29 08:32:13,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:32:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:13,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:13,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:14,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:16,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:16,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-29 08:32:16,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:32:16,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3137 [2020-10-29 08:32:16,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:16,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:16,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:16,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-29 08:32:16,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 08:32:16,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:16,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:32:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:16,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:16,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:16,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:32:16,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:16,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:32:16,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:16,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:16,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:16,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:16,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:16,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:32:16,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:32:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:16,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:16,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:16,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:32:16,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:16,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 08:32:16,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:16,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:16,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:16,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:16,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 08:32:16,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:32:16,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-29 08:32:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:16,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:17,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:17,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 08:32:17,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:17,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-29 08:32:17,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:17,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:17,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:17,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:32:17,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 08:32:17,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:17,308 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:32:17,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124616009] [2020-10-29 08:32:17,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:32:17,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:32:17,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847328881] [2020-10-29 08:32:17,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:32:17,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:32:17,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:32:17,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:32:17,310 INFO L87 Difference]: Start difference. First operand 5846 states and 7646 transitions. Second operand 8 states. [2020-10-29 08:32:30,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:32:30,995 INFO L93 Difference]: Finished difference Result 21985 states and 30300 transitions. [2020-10-29 08:32:30,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 08:32:30,996 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 232 [2020-10-29 08:32:30,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:32:31,076 INFO L225 Difference]: With dead ends: 21985 [2020-10-29 08:32:31,076 INFO L226 Difference]: Without dead ends: 16849 [2020-10-29 08:32:31,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 08:32:31,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16849 states. [2020-10-29 08:32:31,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16849 to 16766. [2020-10-29 08:32:31,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16766 states. [2020-10-29 08:32:31,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16766 states to 16766 states and 22537 transitions. [2020-10-29 08:32:31,563 INFO L78 Accepts]: Start accepts. Automaton has 16766 states and 22537 transitions. Word has length 232 [2020-10-29 08:32:31,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:32:31,564 INFO L481 AbstractCegarLoop]: Abstraction has 16766 states and 22537 transitions. [2020-10-29 08:32:31,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:32:31,564 INFO L276 IsEmpty]: Start isEmpty. Operand 16766 states and 22537 transitions. [2020-10-29 08:32:31,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-29 08:32:31,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:32:31,570 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:32:31,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:32:31,570 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:32:31,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:32:31,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1467126638, now seen corresponding path program 1 times [2020-10-29 08:32:31,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:32:31,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591498839] [2020-10-29 08:32:31,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:32:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:31,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:31,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:32,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:32,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:35,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:35,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-29 08:32:35,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:32:35,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3853 [2020-10-29 08:32:35,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:35,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:35,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:35,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-29 08:32:35,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 08:32:35,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:35,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:32:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:35,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:35,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:35,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:32:35,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:35,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:32:35,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:35,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:35,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:35,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:35,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:35,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:35,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:32:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:35,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:35,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:35,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:32:35,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:35,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 08:32:35,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:35,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:35,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:35,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:35,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 08:32:35,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:35,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-29 08:32:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:35,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:35,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:35,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:32:35,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:35,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 08:32:35,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:35,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:35,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:35,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:32:35,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-29 08:32:35,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:36,086 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:32:36,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591498839] [2020-10-29 08:32:36,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:32:36,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:32:36,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945590318] [2020-10-29 08:32:36,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:32:36,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:32:36,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:32:36,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:32:36,090 INFO L87 Difference]: Start difference. First operand 16766 states and 22537 transitions. Second operand 7 states. [2020-10-29 08:32:45,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:32:45,446 INFO L93 Difference]: Finished difference Result 38689 states and 55143 transitions. [2020-10-29 08:32:45,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:32:45,447 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 267 [2020-10-29 08:32:45,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:32:45,604 INFO L225 Difference]: With dead ends: 38689 [2020-10-29 08:32:45,605 INFO L226 Difference]: Without dead ends: 23351 [2020-10-29 08:32:45,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 08:32:45,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23351 states. [2020-10-29 08:32:46,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23351 to 23297. [2020-10-29 08:32:46,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23297 states. [2020-10-29 08:32:46,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23297 states to 23297 states and 32019 transitions. [2020-10-29 08:32:46,181 INFO L78 Accepts]: Start accepts. Automaton has 23297 states and 32019 transitions. Word has length 267 [2020-10-29 08:32:46,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:32:46,182 INFO L481 AbstractCegarLoop]: Abstraction has 23297 states and 32019 transitions. [2020-10-29 08:32:46,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:32:46,183 INFO L276 IsEmpty]: Start isEmpty. Operand 23297 states and 32019 transitions. [2020-10-29 08:32:46,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-29 08:32:46,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:32:46,189 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-29 08:32:46,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:32:46,190 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:32:46,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:32:46,191 INFO L82 PathProgramCache]: Analyzing trace with hash 931353276, now seen corresponding path program 1 times [2020-10-29 08:32:46,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:32:46,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975603641] [2020-10-29 08:32:46,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:32:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:46,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:46,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:46,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:48,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:51,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:51,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-29 08:32:51,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:32:51,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 08:32:51,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:51,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:51,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:51,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-29 08:32:51,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 08:32:51,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:51,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:32:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:51,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:51,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:51,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:32:51,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:51,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:32:51,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:51,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:51,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:51,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:51,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:51,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:51,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:32:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:51,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:51,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:51,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 08:32:51,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:51,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 08:32:51,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:51,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:51,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:51,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:51,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 08:32:51,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:51,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-29 08:32:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:51,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:51,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:51,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 08:32:51,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:51,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 08:32:51,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:51,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:51,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:51,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:32:51,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 08:32:51,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:51,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-29 08:32:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:51,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:51,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:51,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:32:51,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:51,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 08:32:51,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:51,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:51,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:51,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 08:32:51,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:51,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:32:51,826 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 115 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-29 08:32:51,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975603641] [2020-10-29 08:32:51,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:32:51,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:32:51,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791682832] [2020-10-29 08:32:51,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:32:51,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:32:51,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:32:51,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:32:51,831 INFO L87 Difference]: Start difference. First operand 23297 states and 32019 transitions. Second operand 7 states. [2020-10-29 08:33:01,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:33:01,956 INFO L93 Difference]: Finished difference Result 53858 states and 75165 transitions. [2020-10-29 08:33:01,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:33:01,957 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 274 [2020-10-29 08:33:01,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:33:02,047 INFO L225 Difference]: With dead ends: 53858 [2020-10-29 08:33:02,047 INFO L226 Difference]: Without dead ends: 27592 [2020-10-29 08:33:02,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:33:02,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27592 states. [2020-10-29 08:33:02,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27592 to 27545. [2020-10-29 08:33:02,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27545 states. [2020-10-29 08:33:02,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27545 states to 27545 states and 33228 transitions. [2020-10-29 08:33:02,740 INFO L78 Accepts]: Start accepts. Automaton has 27545 states and 33228 transitions. Word has length 274 [2020-10-29 08:33:02,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:33:02,742 INFO L481 AbstractCegarLoop]: Abstraction has 27545 states and 33228 transitions. [2020-10-29 08:33:02,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:33:02,742 INFO L276 IsEmpty]: Start isEmpty. Operand 27545 states and 33228 transitions. [2020-10-29 08:33:02,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-29 08:33:02,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:33:02,750 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:33:02,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:33:02,750 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:33:02,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:33:02,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1407052046, now seen corresponding path program 1 times [2020-10-29 08:33:02,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:33:02,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869802620] [2020-10-29 08:33:02,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:33:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:02,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:02,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:03,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:07,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:07,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-29 08:33:07,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:33:07,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 08:33:07,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:07,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:07,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:33:07,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-29 08:33:07,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-29 08:33:07,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:07,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:33:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:07,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:07,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:07,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:33:07,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:07,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:33:07,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:07,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:07,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:07,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:07,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:07,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:07,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:33:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:08,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:08,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:08,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:33:08,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:08,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 08:33:08,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:08,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:33:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 08:33:08,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:08,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-29 08:33:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:08,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:08,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:08,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 08:33:08,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:08,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-29 08:33:08,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:08,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:08,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:33:08,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:33:08,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-29 08:33:08,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:09,030 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:33:09,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869802620] [2020-10-29 08:33:09,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:33:09,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:33:09,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611242501] [2020-10-29 08:33:09,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:33:09,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:33:09,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:33:09,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:33:09,033 INFO L87 Difference]: Start difference. First operand 27545 states and 33228 transitions. Second operand 7 states. [2020-10-29 08:33:17,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:33:17,980 INFO L93 Difference]: Finished difference Result 65100 states and 80628 transitions. [2020-10-29 08:33:17,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:33:17,982 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 361 [2020-10-29 08:33:17,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:33:18,110 INFO L225 Difference]: With dead ends: 65100 [2020-10-29 08:33:18,111 INFO L226 Difference]: Without dead ends: 38975 [2020-10-29 08:33:18,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:33:18,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38975 states. [2020-10-29 08:33:18,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38975 to 38937. [2020-10-29 08:33:18,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38937 states. [2020-10-29 08:33:18,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38937 states to 38937 states and 45646 transitions. [2020-10-29 08:33:18,963 INFO L78 Accepts]: Start accepts. Automaton has 38937 states and 45646 transitions. Word has length 361 [2020-10-29 08:33:18,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:33:18,964 INFO L481 AbstractCegarLoop]: Abstraction has 38937 states and 45646 transitions. [2020-10-29 08:33:18,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:33:18,964 INFO L276 IsEmpty]: Start isEmpty. Operand 38937 states and 45646 transitions. [2020-10-29 08:33:18,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2020-10-29 08:33:18,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:33:18,977 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:33:18,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:33:18,977 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:33:18,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:33:18,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1806937294, now seen corresponding path program 1 times [2020-10-29 08:33:18,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:33:18,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920650708] [2020-10-29 08:33:18,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:33:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:19,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:19,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:19,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:24,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:24,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-29 08:33:24,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:33:24,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 08:33:24,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:24,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:24,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:33:24,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:33:24,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-29 08:33:24,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:24,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:33:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:24,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:24,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:24,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:33:24,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:24,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 08:33:24,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:24,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:24,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:33:24,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:24,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:33:24,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:24,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:33:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:24,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:25,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:25,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:33:25,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:25,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-10-29 08:33:25,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:25,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:25,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:33:25,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:33:25,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-29 08:33:25,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:25,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:33:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:25,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:25,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:25,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:33:25,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:25,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 08:33:25,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:25,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:25,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:33:25,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:33:25,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 08:33:25,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:25,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-29 08:33:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:25,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:25,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:25,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 08:33:25,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:25,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 08:33:25,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:25,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:25,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:25,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-29 08:33:25,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:25,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:25,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 08:33:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:25,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:25,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:25,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:33:25,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:25,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 08:33:25,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:25,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 08:33:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:25,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:25,885 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 24 proven. 151 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-29 08:33:25,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920650708] [2020-10-29 08:33:25,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:33:25,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:33:25,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622176174] [2020-10-29 08:33:25,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:33:25,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:33:25,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:33:25,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:33:25,889 INFO L87 Difference]: Start difference. First operand 38937 states and 45646 transitions. Second operand 8 states. [2020-10-29 08:33:33,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:33:33,826 INFO L93 Difference]: Finished difference Result 85166 states and 101357 transitions. [2020-10-29 08:33:33,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:33:33,827 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 484 [2020-10-29 08:33:33,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:33:34,096 INFO L225 Difference]: With dead ends: 85166 [2020-10-29 08:33:34,096 INFO L226 Difference]: Without dead ends: 47649 [2020-10-29 08:33:34,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:33:34,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47649 states. [2020-10-29 08:33:34,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47649 to 47607. [2020-10-29 08:33:34,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47607 states. [2020-10-29 08:33:34,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47607 states to 47607 states and 56456 transitions. [2020-10-29 08:33:34,997 INFO L78 Accepts]: Start accepts. Automaton has 47607 states and 56456 transitions. Word has length 484 [2020-10-29 08:33:34,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:33:34,998 INFO L481 AbstractCegarLoop]: Abstraction has 47607 states and 56456 transitions. [2020-10-29 08:33:34,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:33:34,998 INFO L276 IsEmpty]: Start isEmpty. Operand 47607 states and 56456 transitions. [2020-10-29 08:33:35,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2020-10-29 08:33:35,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:33:35,017 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-29 08:33:35,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:33:35,018 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:33:35,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:33:35,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1358679202, now seen corresponding path program 1 times [2020-10-29 08:33:35,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:33:35,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574849613] [2020-10-29 08:33:35,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:33:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:35,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:35,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:35,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:37,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:40,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:40,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 597 [2020-10-29 08:33:40,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:33:40,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 08:33:40,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:40,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:33:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-29 08:33:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 283 [2020-10-29 08:33:40,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:40,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:33:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:40,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:40,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:40,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:33:40,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:40,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:33:40,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:40,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:40,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:40,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:40,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:40,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:40,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:33:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:40,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:40,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:40,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:33:40,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:40,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 08:33:40,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:40,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:40,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:33:40,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:40,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 08:33:40,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:40,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-29 08:33:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:40,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:40,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:40,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-29 08:33:40,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:40,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-29 08:33:40,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:40,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:40,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:33:40,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:33:40,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 08:33:40,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:41,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-29 08:33:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:41,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:41,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:41,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 08:33:41,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:41,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 08:33:41,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:41,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:41,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:41,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-29 08:33:41,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:41,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:41,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2020-10-29 08:33:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:41,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:41,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:41,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:33:41,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:41,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:33:41,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:41,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:41,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:41,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 08:33:41,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:41,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:41,624 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 159 proven. 157 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-29 08:33:41,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574849613] [2020-10-29 08:33:41,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:33:41,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:33:41,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620978271] [2020-10-29 08:33:41,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:33:41,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:33:41,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:33:41,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:33:41,627 INFO L87 Difference]: Start difference. First operand 47607 states and 56456 transitions. Second operand 8 states. [2020-10-29 08:33:53,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:33:53,096 INFO L93 Difference]: Finished difference Result 103021 states and 122628 transitions. [2020-10-29 08:33:53,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 08:33:53,098 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 579 [2020-10-29 08:33:53,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:33:53,238 INFO L225 Difference]: With dead ends: 103021 [2020-10-29 08:33:53,238 INFO L226 Difference]: Without dead ends: 56834 [2020-10-29 08:33:53,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-29 08:33:53,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56834 states. [2020-10-29 08:33:54,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56834 to 56110. [2020-10-29 08:33:54,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56110 states. [2020-10-29 08:33:54,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56110 states to 56110 states and 65530 transitions. [2020-10-29 08:33:54,530 INFO L78 Accepts]: Start accepts. Automaton has 56110 states and 65530 transitions. Word has length 579 [2020-10-29 08:33:54,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:33:54,532 INFO L481 AbstractCegarLoop]: Abstraction has 56110 states and 65530 transitions. [2020-10-29 08:33:54,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:33:54,532 INFO L276 IsEmpty]: Start isEmpty. Operand 56110 states and 65530 transitions. [2020-10-29 08:33:54,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2020-10-29 08:33:54,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:33:54,544 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:33:54,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 08:33:54,544 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:33:54,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:33:54,545 INFO L82 PathProgramCache]: Analyzing trace with hash -531448931, now seen corresponding path program 1 times [2020-10-29 08:33:54,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:33:54,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109805685] [2020-10-29 08:33:54,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:33:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:54,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:55,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:55,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:59,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:59,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 682 [2020-10-29 08:33:59,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:33:59,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 08:33:59,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:59,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:59,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:33:59,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 565 [2020-10-29 08:33:59,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 08:33:59,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:00,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:34:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:00,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:00,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:00,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:34:00,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:00,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:34:00,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:00,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:00,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:34:00,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:00,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:34:00,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:00,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:34:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:00,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:00,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:00,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:34:00,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:00,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 08:34:00,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:00,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:34:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:34:00,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:00,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-29 08:34:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:00,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:00,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:00,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 435 [2020-10-29 08:34:00,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:00,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-29 08:34:00,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:00,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:34:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:00,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 426 [2020-10-29 08:34:00,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:00,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:34:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:00,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:00,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:00,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-29 08:34:00,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:00,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 08:34:00,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:00,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:00,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:34:00,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:00,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 08:34:00,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:00,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2020-10-29 08:34:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:00,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:00,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:00,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 08:34:00,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:00,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 08:34:00,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:00,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:00,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:34:00,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:34:00,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 08:34:00,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:01,329 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-29 08:34:01,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109805685] [2020-10-29 08:34:01,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:34:01,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:34:01,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055597243] [2020-10-29 08:34:01,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:34:01,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:34:01,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:34:01,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:34:01,332 INFO L87 Difference]: Start difference. First operand 56110 states and 65530 transitions. Second operand 7 states. [2020-10-29 08:34:14,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:34:14,158 INFO L93 Difference]: Finished difference Result 136718 states and 168855 transitions. [2020-10-29 08:34:14,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:34:14,159 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 664 [2020-10-29 08:34:14,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:34:14,468 INFO L225 Difference]: With dead ends: 136718 [2020-10-29 08:34:14,468 INFO L226 Difference]: Without dead ends: 82028 [2020-10-29 08:34:14,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:34:14,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82028 states. [2020-10-29 08:34:16,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82028 to 75226. [2020-10-29 08:34:16,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75226 states. [2020-10-29 08:34:17,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75226 states to 75226 states and 88169 transitions. [2020-10-29 08:34:17,276 INFO L78 Accepts]: Start accepts. Automaton has 75226 states and 88169 transitions. Word has length 664 [2020-10-29 08:34:17,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:34:17,277 INFO L481 AbstractCegarLoop]: Abstraction has 75226 states and 88169 transitions. [2020-10-29 08:34:17,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:34:17,277 INFO L276 IsEmpty]: Start isEmpty. Operand 75226 states and 88169 transitions. [2020-10-29 08:34:17,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2020-10-29 08:34:17,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:34:17,293 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:34:17,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 08:34:17,293 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:34:17,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:34:17,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1517088622, now seen corresponding path program 1 times [2020-10-29 08:34:17,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:34:17,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862755309] [2020-10-29 08:34:17,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:34:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:17,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:17,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:18,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:22,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:22,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:22,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 706 [2020-10-29 08:34:22,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:34:22,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 08:34:22,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:22,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:22,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:34:22,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-29 08:34:22,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 484 [2020-10-29 08:34:22,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:22,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:34:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:22,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:22,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:22,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:34:22,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:22,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:34:22,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:22,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:22,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:34:22,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:22,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:34:22,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:22,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:34:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:22,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:22,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:22,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:34:22,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:22,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 08:34:22,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:22,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:22,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:34:22,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:22,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 08:34:22,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:22,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-29 08:34:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:22,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:22,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:23,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:23,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-29 08:34:23,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:34:23,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 651 [2020-10-29 08:34:23,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:23,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:23,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:34:23,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:23,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 381 [2020-10-29 08:34:23,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:23,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:34:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:23,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:23,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:23,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 08:34:23,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:23,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 08:34:23,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:23,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:23,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:34:23,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:23,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 08:34:23,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:23,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-29 08:34:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:23,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:23,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:23,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 08:34:23,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:23,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 08:34:23,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:23,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:23,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:34:23,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:34:23,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 08:34:23,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:23,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-29 08:34:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:23,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:23,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:23,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:34:23,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:23,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 08:34:23,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:23,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:23,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:34:23,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 08:34:23,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:34:23,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:24,058 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 214 proven. 74 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2020-10-29 08:34:24,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862755309] [2020-10-29 08:34:24,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:34:24,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:34:24,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640508252] [2020-10-29 08:34:24,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:34:24,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:34:24,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:34:24,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:34:24,060 INFO L87 Difference]: Start difference. First operand 75226 states and 88169 transitions. Second operand 7 states. [2020-10-29 08:34:33,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:34:33,483 INFO L93 Difference]: Finished difference Result 149105 states and 175254 transitions. [2020-10-29 08:34:33,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:34:33,484 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 686 [2020-10-29 08:34:33,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:34:33,667 INFO L225 Difference]: With dead ends: 149105 [2020-10-29 08:34:33,668 INFO L226 Difference]: Without dead ends: 75301 [2020-10-29 08:34:33,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:34:33,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75301 states. [2020-10-29 08:34:35,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75301 to 75226. [2020-10-29 08:34:35,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75226 states. [2020-10-29 08:34:35,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75226 states to 75226 states and 87230 transitions. [2020-10-29 08:34:35,362 INFO L78 Accepts]: Start accepts. Automaton has 75226 states and 87230 transitions. Word has length 686 [2020-10-29 08:34:35,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:34:35,363 INFO L481 AbstractCegarLoop]: Abstraction has 75226 states and 87230 transitions. [2020-10-29 08:34:35,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:34:35,363 INFO L276 IsEmpty]: Start isEmpty. Operand 75226 states and 87230 transitions. [2020-10-29 08:34:35,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2020-10-29 08:34:35,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:34:35,373 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:34:35,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 08:34:35,374 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:34:35,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:34:35,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1998797776, now seen corresponding path program 1 times [2020-10-29 08:34:35,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:34:35,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274139582] [2020-10-29 08:34:35,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:34:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:35,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:35,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:37,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:38,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:40,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:40,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 717 [2020-10-29 08:34:40,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:34:40,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 08:34:40,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:40,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:40,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 08:34:40,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-29 08:34:40,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 581 [2020-10-29 08:34:40,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:40,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:34:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:40,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:40,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:40,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:34:40,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:40,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:34:40,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:40,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:40,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:34:40,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:40,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:34:40,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:40,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:34:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:40,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:40,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:40,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:34:40,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:40,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 08:34:40,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:40,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:34:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:40,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 08:34:40,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:41,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-29 08:34:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:41,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:41,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:41,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-29 08:34:41,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:41,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-10-29 08:34:41,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:41,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:41,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 08:34:41,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:34:41,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 390 [2020-10-29 08:34:41,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:41,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:34:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:41,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:41,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:41,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 08:34:41,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:41,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-29 08:34:41,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:41,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:41,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:34:41,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:34:41,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 08:34:41,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:41,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-29 08:34:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:42,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:42,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:42,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:42,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-29 08:34:42,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:34:42,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-29 08:34:42,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:42,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:42,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:34:42,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:34:42,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-29 08:34:42,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 251 proven. 17 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2020-10-29 08:34:42,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274139582] [2020-10-29 08:34:42,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:34:42,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:34:42,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200882275] [2020-10-29 08:34:42,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 08:34:42,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:34:42,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 08:34:42,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 08:34:42,624 INFO L87 Difference]: Start difference. First operand 75226 states and 87230 transitions. Second operand 9 states.