/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:33:28,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:33:28,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:33:28,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:33:28,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:33:28,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:33:28,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:33:28,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:33:28,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:33:28,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:33:28,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:33:28,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:33:28,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:33:28,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:33:28,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:33:28,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:33:28,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:33:28,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:33:28,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:33:28,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:33:28,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:33:28,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:33:28,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:33:28,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:33:28,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:33:28,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:33:28,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:33:28,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:33:28,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:33:28,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:33:28,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:33:28,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:33:28,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:33:28,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:33:28,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:33:28,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:33:28,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:33:28,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:33:28,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:33:28,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:33:28,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:33:28,861 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 23:33:28,911 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:33:28,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:33:28,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:33:28,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:33:28,916 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:33:28,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:33:28,917 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:33:28,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:33:28,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:33:28,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:33:28,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:33:28,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:33:28,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:33:28,919 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:33:28,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:33:28,920 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:33:28,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:33:28,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:33:28,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:33:28,921 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:33:28,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:33:28,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:33:28,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:33:28,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:33:28,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:33:28,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:33:28,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:33:28,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:33:28,923 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:33:28,923 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:33:29,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:33:29,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:33:29,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:33:29,436 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:33:29,436 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:33:29,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label57.c [2020-10-26 23:33:29,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c4977ed1/91e44635cf444394a6eeaf4d51435b5e/FLAGf2452d6ef [2020-10-26 23:33:30,306 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:33:30,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label57.c [2020-10-26 23:33:30,327 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c4977ed1/91e44635cf444394a6eeaf4d51435b5e/FLAGf2452d6ef [2020-10-26 23:33:30,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c4977ed1/91e44635cf444394a6eeaf4d51435b5e [2020-10-26 23:33:30,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:33:30,526 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:33:30,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:33:30,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:33:30,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:33:30,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:33:30" (1/1) ... [2020-10-26 23:33:30,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61fb5842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:33:30, skipping insertion in model container [2020-10-26 23:33:30,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:33:30" (1/1) ... [2020-10-26 23:33:30,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:33:30,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:33:31,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:33:31,111 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:33:31,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:33:31,350 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:33:31,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:33:31 WrapperNode [2020-10-26 23:33:31,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:33:31,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:33:31,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:33:31,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:33:31,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:33:31" (1/1) ... [2020-10-26 23:33:31,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:33:31" (1/1) ... [2020-10-26 23:33:31,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:33:31" (1/1) ... [2020-10-26 23:33:31,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:33:31" (1/1) ... [2020-10-26 23:33:31,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:33:31" (1/1) ... [2020-10-26 23:33:31,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:33:31" (1/1) ... [2020-10-26 23:33:31,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:33:31" (1/1) ... [2020-10-26 23:33:31,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:33:31,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:33:31,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:33:31,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:33:31,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:33:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:33:31,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:33:31,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:33:31,611 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:33:31,612 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:33:31,612 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:33:31,613 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:33:31,613 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:33:31,613 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:33:31,614 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:33:31,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:33:31,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:33:31,616 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:33:31,616 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:33:31,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:33:31,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:33:31,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:33:31,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:33:31,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:33:31,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:33:33,197 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:33:33,198 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:33:33,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:33:33 BoogieIcfgContainer [2020-10-26 23:33:33,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:33:33,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:33:33,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:33:33,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:33:33,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:33:30" (1/3) ... [2020-10-26 23:33:33,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a7ef36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:33:33, skipping insertion in model container [2020-10-26 23:33:33,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:33:31" (2/3) ... [2020-10-26 23:33:33,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a7ef36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:33:33, skipping insertion in model container [2020-10-26 23:33:33,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:33:33" (3/3) ... [2020-10-26 23:33:33,210 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label57.c [2020-10-26 23:33:33,223 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:33:33,229 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:33:33,243 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:33:33,295 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:33:33,295 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:33:33,295 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:33:33,295 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:33:33,296 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:33:33,296 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:33:33,296 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:33:33,296 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:33:33,324 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:33:33,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-26 23:33:33,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:33,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:33:33,335 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:33,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:33,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1387754510, now seen corresponding path program 1 times [2020-10-26 23:33:33,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:33,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592708420] [2020-10-26 23:33:33,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:33,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:34,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:34,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-26 23:33:34,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:34,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 625 [2020-10-26 23:33:34,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:34,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:33:34,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:33:34,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 23:33:34,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:33:34,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:34,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:34,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:34,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:34,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:34,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:33:34,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:34,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:33:34,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:34,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:33:34,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592708420] [2020-10-26 23:33:34,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:33:34,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 23:33:34,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353400624] [2020-10-26 23:33:34,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:33:34,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:34,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:33:34,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:33:34,387 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 5 states. [2020-10-26 23:33:37,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:37,956 INFO L93 Difference]: Finished difference Result 891 states and 1618 transitions. [2020-10-26 23:33:37,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:33:37,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-26 23:33:37,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:37,980 INFO L225 Difference]: With dead ends: 891 [2020-10-26 23:33:37,980 INFO L226 Difference]: Without dead ends: 565 [2020-10-26 23:33:38,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:33:38,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-26 23:33:38,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 561. [2020-10-26 23:33:38,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-10-26 23:33:38,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 856 transitions. [2020-10-26 23:33:38,116 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 856 transitions. Word has length 37 [2020-10-26 23:33:38,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:38,117 INFO L481 AbstractCegarLoop]: Abstraction has 561 states and 856 transitions. [2020-10-26 23:33:38,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:33:38,117 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 856 transitions. [2020-10-26 23:33:38,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-26 23:33:38,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:38,123 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:33:38,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:33:38,123 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:38,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:38,124 INFO L82 PathProgramCache]: Analyzing trace with hash 798347105, now seen corresponding path program 1 times [2020-10-26 23:33:38,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:38,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965612904] [2020-10-26 23:33:38,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:38,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:38,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:39,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:39,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:33:39,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:39,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 961 [2020-10-26 23:33:39,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:39,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:33:39,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:33:39,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:33:39,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:33:39,295 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:33:39,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:39,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:39,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:39,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:39,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:39,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:33:39,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:39,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:39,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:39,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:33:39,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:39,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:39,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:39,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:39,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:33:39,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:39,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-26 23:33:39,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:39,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:39,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:39,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:33:39,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:39,548 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:33:39,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965612904] [2020-10-26 23:33:39,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:33:39,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:33:39,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430665199] [2020-10-26 23:33:39,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:33:39,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:39,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:33:39,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:33:39,553 INFO L87 Difference]: Start difference. First operand 561 states and 856 transitions. Second operand 7 states. [2020-10-26 23:33:42,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:42,266 INFO L93 Difference]: Finished difference Result 1690 states and 2613 transitions. [2020-10-26 23:33:42,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:33:42,268 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2020-10-26 23:33:42,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:42,277 INFO L225 Difference]: With dead ends: 1690 [2020-10-26 23:33:42,279 INFO L226 Difference]: Without dead ends: 1135 [2020-10-26 23:33:42,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:33:42,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2020-10-26 23:33:42,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 939. [2020-10-26 23:33:42,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 939 states. [2020-10-26 23:33:42,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1301 transitions. [2020-10-26 23:33:42,380 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1301 transitions. Word has length 106 [2020-10-26 23:33:42,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:42,381 INFO L481 AbstractCegarLoop]: Abstraction has 939 states and 1301 transitions. [2020-10-26 23:33:42,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:33:42,381 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1301 transitions. [2020-10-26 23:33:42,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-26 23:33:42,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:42,392 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:33:42,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:33:42,393 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:42,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:42,394 INFO L82 PathProgramCache]: Analyzing trace with hash 964642537, now seen corresponding path program 1 times [2020-10-26 23:33:42,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:42,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493581510] [2020-10-26 23:33:42,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:42,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:42,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:43,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:43,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-26 23:33:43,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:43,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1355 [2020-10-26 23:33:43,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:43,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:33:43,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:33:43,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:33:43,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:43,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:43,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:43,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:43,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:43,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:43,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:33:43,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:43,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:43,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:43,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:33:43,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:43,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:44,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:44,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:44,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:33:44,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:44,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-26 23:33:44,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:44,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:44,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:44,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:33:44,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:44,314 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:33:44,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493581510] [2020-10-26 23:33:44,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:33:44,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:33:44,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661735533] [2020-10-26 23:33:44,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:33:44,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:44,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:33:44,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:33:44,321 INFO L87 Difference]: Start difference. First operand 939 states and 1301 transitions. Second operand 7 states. [2020-10-26 23:33:46,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:46,583 INFO L93 Difference]: Finished difference Result 1706 states and 2408 transitions. [2020-10-26 23:33:46,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:33:46,585 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-10-26 23:33:46,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:46,593 INFO L225 Difference]: With dead ends: 1706 [2020-10-26 23:33:46,594 INFO L226 Difference]: Without dead ends: 1141 [2020-10-26 23:33:46,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:33:46,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2020-10-26 23:33:46,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1123. [2020-10-26 23:33:46,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-10-26 23:33:46,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1503 transitions. [2020-10-26 23:33:46,642 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1503 transitions. Word has length 110 [2020-10-26 23:33:46,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:46,643 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1503 transitions. [2020-10-26 23:33:46,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:33:46,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1503 transitions. [2020-10-26 23:33:46,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-26 23:33:46,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:46,647 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:33:46,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:33:46,648 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:46,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:46,648 INFO L82 PathProgramCache]: Analyzing trace with hash 665850228, now seen corresponding path program 1 times [2020-10-26 23:33:46,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:46,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838462015] [2020-10-26 23:33:46,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:46,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:46,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:47,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:47,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:47,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-26 23:33:47,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:33:47,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-10-26 23:33:47,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:47,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:47,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:33:47,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 23:33:47,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-26 23:33:47,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:47,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:47,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:47,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:47,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:47,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:33:47,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:47,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:47,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:47,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:47,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:47,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:47,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:47,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:47,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:33:47,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:47,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 23:33:47,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:47,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:47,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:47,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:33:47,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:33:47,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:33:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:48,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:48,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:48,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:48,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:33:48,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:48,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-26 23:33:48,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:48,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:48,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:48,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:33:48,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 23:33:48,462 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:33:48,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838462015] [2020-10-26 23:33:48,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:48,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:33:48,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641450036] [2020-10-26 23:33:48,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:33:48,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:48,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:33:48,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:33:48,465 INFO L87 Difference]: Start difference. First operand 1123 states and 1503 transitions. Second operand 7 states. [2020-10-26 23:33:50,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:50,639 INFO L93 Difference]: Finished difference Result 1778 states and 2497 transitions. [2020-10-26 23:33:50,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:33:50,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2020-10-26 23:33:50,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:50,645 INFO L225 Difference]: With dead ends: 1778 [2020-10-26 23:33:50,645 INFO L226 Difference]: Without dead ends: 773 [2020-10-26 23:33:50,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:33:50,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-10-26 23:33:50,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 749. [2020-10-26 23:33:50,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2020-10-26 23:33:50,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 894 transitions. [2020-10-26 23:33:50,680 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 894 transitions. Word has length 194 [2020-10-26 23:33:50,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:50,681 INFO L481 AbstractCegarLoop]: Abstraction has 749 states and 894 transitions. [2020-10-26 23:33:50,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:33:50,681 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 894 transitions. [2020-10-26 23:33:50,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-26 23:33:50,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:50,685 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:33:50,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:33:50,685 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:50,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:50,686 INFO L82 PathProgramCache]: Analyzing trace with hash -388096090, now seen corresponding path program 1 times [2020-10-26 23:33:50,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:50,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466563976] [2020-10-26 23:33:50,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:50,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:50,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:50,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:55,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:55,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-26 23:33:55,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:33:55,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4813 [2020-10-26 23:33:55,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:55,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:33:55,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:33:55,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:33:55,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:55,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:55,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:55,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:55,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:55,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:55,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:33:55,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:55,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:33:55,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:55,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:55,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:55,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:55,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:55,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:55,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-26 23:33:55,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:55,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:55,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:55,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:33:55,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:55,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 23:33:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:55,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:55,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:55,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:33:55,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:55,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:33:55,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:55,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:55,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:33:55,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:55,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:56,100 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 58 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:33:56,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466563976] [2020-10-26 23:33:56,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:56,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:33:56,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695152924] [2020-10-26 23:33:56,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:33:56,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:56,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:33:56,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:33:56,103 INFO L87 Difference]: Start difference. First operand 749 states and 894 transitions. Second operand 7 states. [2020-10-26 23:33:58,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:58,212 INFO L93 Difference]: Finished difference Result 2068 states and 2544 transitions. [2020-10-26 23:33:58,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:33:58,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 219 [2020-10-26 23:33:58,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:58,221 INFO L225 Difference]: With dead ends: 2068 [2020-10-26 23:33:58,221 INFO L226 Difference]: Without dead ends: 1507 [2020-10-26 23:33:58,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:33:58,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2020-10-26 23:33:58,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1313. [2020-10-26 23:33:58,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1313 states. [2020-10-26 23:33:58,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1523 transitions. [2020-10-26 23:33:58,269 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1523 transitions. Word has length 219 [2020-10-26 23:33:58,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:58,269 INFO L481 AbstractCegarLoop]: Abstraction has 1313 states and 1523 transitions. [2020-10-26 23:33:58,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:33:58,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1523 transitions. [2020-10-26 23:33:58,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-10-26 23:33:58,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:58,279 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 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] [2020-10-26 23:33:58,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:33:58,280 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:58,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:58,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1643485124, now seen corresponding path program 1 times [2020-10-26 23:33:58,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:58,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364326986] [2020-10-26 23:33:58,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:58,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:58,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:00,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:00,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:02,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:03,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:03,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-10-26 23:34:03,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:34:03,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-26 23:34:03,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:03,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:03,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:34:03,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:34:03,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:34:03,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:34:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:03,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:03,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:03,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:34:03,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:03,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:34:03,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:03,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:03,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:03,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:03,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:34:03,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:34:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:03,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:03,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:03,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:34:03,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:03,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:34:03,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:03,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:03,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:03,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:03,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:34:03,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:34:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:03,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:03,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:03,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:34:03,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:03,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-26 23:34:03,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:03,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:34:03,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:03,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:34:03,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:34:03,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:34:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:03,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:04,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:04,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:34:04,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:04,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-26 23:34:04,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:04,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:04,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:04,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:34:04,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:04,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-10-26 23:34:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:04,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:04,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:04,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:34:04,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:04,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:34:04,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:04,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:04,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:34:04,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:04,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:04,418 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 269 proven. 72 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-26 23:34:04,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364326986] [2020-10-26 23:34:04,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:34:04,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:34:04,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11058971] [2020-10-26 23:34:04,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:34:04,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:34:04,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:34:04,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:34:04,421 INFO L87 Difference]: Start difference. First operand 1313 states and 1523 transitions. Second operand 7 states. [2020-10-26 23:34:06,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:34:06,160 INFO L93 Difference]: Finished difference Result 2456 states and 2898 transitions. [2020-10-26 23:34:06,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:34:06,162 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 412 [2020-10-26 23:34:06,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:34:06,170 INFO L225 Difference]: With dead ends: 2456 [2020-10-26 23:34:06,170 INFO L226 Difference]: Without dead ends: 1515 [2020-10-26 23:34:06,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:34:06,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2020-10-26 23:34:06,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1495. [2020-10-26 23:34:06,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1495 states. [2020-10-26 23:34:06,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 1712 transitions. [2020-10-26 23:34:06,220 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 1712 transitions. Word has length 412 [2020-10-26 23:34:06,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:34:06,222 INFO L481 AbstractCegarLoop]: Abstraction has 1495 states and 1712 transitions. [2020-10-26 23:34:06,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:34:06,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 1712 transitions. [2020-10-26 23:34:06,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2020-10-26 23:34:06,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:34:06,235 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:34:06,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:34:06,236 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:34:06,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:34:06,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1532660805, now seen corresponding path program 2 times [2020-10-26 23:34:06,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:34:06,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242163923] [2020-10-26 23:34:06,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:34:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:06,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:06,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:06,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:07,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:11,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:11,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 542 [2020-10-26 23:34:11,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:34:11,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-26 23:34:11,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:34:11,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 23:34:11,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:11,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:34:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:11,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:11,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:11,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:34:11,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:11,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:34:11,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:11,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:11,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:11,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:11,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:11,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:34:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:11,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:11,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:11,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:34:11,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:11,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:34:11,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:11,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:11,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:34:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:11,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:11,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:11,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:34:11,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:11,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-26 23:34:11,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:11,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:34:11,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:11,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:34:11,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:34:11,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:34:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:11,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:12,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:12,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:34:12,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:12,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-26 23:34:12,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:12,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:12,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:12,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:34:12,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:34:12,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:34:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:12,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:12,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:12,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:34:12,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:12,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:34:12,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:12,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:12,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:34:12,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:12,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:12,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-26 23:34:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:12,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:12,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:12,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:34:12,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:12,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:34:12,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:12,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:12,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:34:12,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:12,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:12,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1014 backedges. 379 proven. 152 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2020-10-26 23:34:12,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242163923] [2020-10-26 23:34:12,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:34:12,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:34:12,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513500432] [2020-10-26 23:34:12,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:34:12,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:34:12,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:34:12,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:34:12,738 INFO L87 Difference]: Start difference. First operand 1495 states and 1712 transitions. Second operand 7 states. [2020-10-26 23:34:15,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:34:15,151 INFO L93 Difference]: Finished difference Result 3386 states and 4096 transitions. [2020-10-26 23:34:15,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:34:15,153 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 522 [2020-10-26 23:34:15,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:34:15,165 INFO L225 Difference]: With dead ends: 3386 [2020-10-26 23:34:15,166 INFO L226 Difference]: Without dead ends: 2263 [2020-10-26 23:34:15,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:34:15,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2020-10-26 23:34:15,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 2249. [2020-10-26 23:34:15,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2249 states. [2020-10-26 23:34:15,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 2696 transitions. [2020-10-26 23:34:15,242 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 2696 transitions. Word has length 522 [2020-10-26 23:34:15,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:34:15,243 INFO L481 AbstractCegarLoop]: Abstraction has 2249 states and 2696 transitions. [2020-10-26 23:34:15,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:34:15,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 2696 transitions. [2020-10-26 23:34:15,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2020-10-26 23:34:15,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:34:15,261 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:34:15,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:34:15,261 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:34:15,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:34:15,262 INFO L82 PathProgramCache]: Analyzing trace with hash -519300805, now seen corresponding path program 1 times [2020-10-26 23:34:15,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:34:15,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578273959] [2020-10-26 23:34:15,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:34:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:15,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:15,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:15,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:19,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:20,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:20,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 549 [2020-10-26 23:34:20,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:34:20,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-26 23:34:20,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:20,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:34:20,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:34:20,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-26 23:34:20,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:20,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:34:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:20,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:20,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:20,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:34:20,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:20,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:34:20,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:20,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:20,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:20,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:20,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:20,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:34:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:20,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:20,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:20,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:34:20,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:20,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:34:20,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:20,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:20,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:20,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:20,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:20,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:34:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:20,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:20,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:20,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:34:20,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:20,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-26 23:34:20,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:20,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:34:20,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:20,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:34:20,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:20,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:34:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:20,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:20,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:20,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:34:20,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:20,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-26 23:34:20,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:20,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:20,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:20,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:34:20,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:21,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:34:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:21,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:21,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:21,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:34:21,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:21,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:34:21,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:21,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:21,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:21,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:34:21,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:21,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-10-26 23:34:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:21,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:21,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:21,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:34:21,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:21,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:34:21,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:21,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:21,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:34:21,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:21,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1014 backedges. 583 proven. 154 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2020-10-26 23:34:21,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578273959] [2020-10-26 23:34:21,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:34:21,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:34:21,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642438276] [2020-10-26 23:34:21,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:34:21,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:34:21,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:34:21,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:34:21,651 INFO L87 Difference]: Start difference. First operand 2249 states and 2696 transitions. Second operand 8 states. [2020-10-26 23:34:23,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:34:23,670 INFO L93 Difference]: Finished difference Result 4512 states and 5487 transitions. [2020-10-26 23:34:23,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:34:23,673 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 529 [2020-10-26 23:34:23,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:34:23,687 INFO L225 Difference]: With dead ends: 4512 [2020-10-26 23:34:23,687 INFO L226 Difference]: Without dead ends: 2635 [2020-10-26 23:34:23,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:34:23,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635 states. [2020-10-26 23:34:23,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635 to 2619. [2020-10-26 23:34:23,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2619 states. [2020-10-26 23:34:23,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 3083 transitions. [2020-10-26 23:34:23,772 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 3083 transitions. Word has length 529 [2020-10-26 23:34:23,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:34:23,774 INFO L481 AbstractCegarLoop]: Abstraction has 2619 states and 3083 transitions. [2020-10-26 23:34:23,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:34:23,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 3083 transitions. [2020-10-26 23:34:23,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2020-10-26 23:34:23,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:34:23,782 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:34:23,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:34:23,783 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:34:23,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:34:23,783 INFO L82 PathProgramCache]: Analyzing trace with hash 104554992, now seen corresponding path program 1 times [2020-10-26 23:34:23,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:34:23,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944795502] [2020-10-26 23:34:23,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:34:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:23,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:24,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:25,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:26,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:27,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:28,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:28,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 710 [2020-10-26 23:34:28,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:34:28,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-26 23:34:28,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:28,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:28,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:34:28,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:34:28,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:29,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:34:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:29,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:29,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:29,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:34:29,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:29,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:34:29,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:29,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:29,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:29,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:29,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:29,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:34:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:29,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:29,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:29,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:34:29,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:29,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:34:29,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:29,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:29,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:29,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:29,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:29,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:34:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:29,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:29,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:29,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:34:29,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:29,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:34:29,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:29,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:29,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:29,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:29,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:29,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:34:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:29,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:29,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:29,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:34:29,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:29,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-26 23:34:29,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:29,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:29,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:29,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:29,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:29,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:34:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:29,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:29,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:29,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:34:29,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:29,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-26 23:34:29,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:29,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:34:29,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:29,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:34:29,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:29,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:34:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:29,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:29,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:29,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:34:29,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:29,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:34:29,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:29,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:29,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:29,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:34:29,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:29,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2020-10-26 23:34:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:29,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:29,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:29,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:34:29,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:29,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:34:29,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:29,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:29,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:34:29,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:29,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:30,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1535 backedges. 485 proven. 72 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2020-10-26 23:34:30,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944795502] [2020-10-26 23:34:30,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:34:30,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:34:30,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831209527] [2020-10-26 23:34:30,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:34:30,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:34:30,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:34:30,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:34:30,248 INFO L87 Difference]: Start difference. First operand 2619 states and 3083 transitions. Second operand 7 states. [2020-10-26 23:34:32,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:34:32,284 INFO L93 Difference]: Finished difference Result 5060 states and 6017 transitions. [2020-10-26 23:34:32,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:34:32,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 688 [2020-10-26 23:34:32,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:34:32,299 INFO L225 Difference]: With dead ends: 5060 [2020-10-26 23:34:32,299 INFO L226 Difference]: Without dead ends: 2813 [2020-10-26 23:34:32,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:34:32,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2020-10-26 23:34:32,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 2805. [2020-10-26 23:34:32,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2805 states. [2020-10-26 23:34:32,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 3286 transitions. [2020-10-26 23:34:32,390 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 3286 transitions. Word has length 688 [2020-10-26 23:34:32,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:34:32,391 INFO L481 AbstractCegarLoop]: Abstraction has 2805 states and 3286 transitions. [2020-10-26 23:34:32,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:34:32,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 3286 transitions. [2020-10-26 23:34:32,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 707 [2020-10-26 23:34:32,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:34:32,401 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:34:32,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:34:32,401 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:34:32,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:34:32,402 INFO L82 PathProgramCache]: Analyzing trace with hash 439251476, now seen corresponding path program 1 times [2020-10-26 23:34:32,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:34:32,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688519684] [2020-10-26 23:34:32,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:34:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:32,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:32,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:33,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:35,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:37,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:37,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 728 [2020-10-26 23:34:37,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:34:37,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-26 23:34:37,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:34:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-26 23:34:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-26 23:34:37,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:37,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:34:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:37,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:37,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:37,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:34:37,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:37,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:34:37,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:37,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:37,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:34:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:37,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:37,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:37,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:34:37,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:37,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:34:37,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:37,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:37,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:37,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:37,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:37,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:34:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:37,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:37,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:37,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:34:37,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:37,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:34:37,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:37,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:37,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:37,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:37,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:37,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:34:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:37,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:37,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:37,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:34:37,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:37,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 23:34:37,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:37,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:34:37,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:37,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:34:37,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:37,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:34:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:38,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:38,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:38,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:38,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:34:38,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:34:38,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 635 [2020-10-26 23:34:38,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:38,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:34:38,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:38,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 23:34:38,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:39,549 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2020-10-26 23:34:39,882 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2020-10-26 23:34:40,229 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 78 [2020-10-26 23:34:40,611 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 82 [2020-10-26 23:34:41,019 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 85 [2020-10-26 23:34:41,434 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 89 [2020-10-26 23:34:42,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-26 23:34:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:42,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:42,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:42,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:34:42,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:42,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:34:42,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:42,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:42,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:34:42,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:42,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:42,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2020-10-26 23:34:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:42,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:42,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:42,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:34:42,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:42,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:34:42,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:42,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:42,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:34:42,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:42,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:44,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1535 backedges. 535 proven. 152 refuted. 0 times theorem prover too weak. 848 trivial. 0 not checked. [2020-10-26 23:34:44,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688519684] [2020-10-26 23:34:44,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:34:44,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 23:34:44,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751584339] [2020-10-26 23:34:44,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 23:34:44,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:34:44,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 23:34:44,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:34:44,861 INFO L87 Difference]: Start difference. First operand 2805 states and 3286 transitions. Second operand 13 states. [2020-10-26 23:34:45,104 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 71 [2020-10-26 23:34:45,976 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 93 [2020-10-26 23:34:46,610 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 102 [2020-10-26 23:34:47,231 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 97 [2020-10-26 23:34:47,735 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 100 [2020-10-26 23:34:48,203 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 104 [2020-10-26 23:34:48,670 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 108 [2020-10-26 23:34:49,170 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 127 [2020-10-26 23:34:49,635 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 63 [2020-10-26 23:34:50,002 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 82 [2020-10-26 23:34:50,864 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 85 [2020-10-26 23:34:51,675 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 90 [2020-10-26 23:34:52,201 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 93 [2020-10-26 23:34:52,651 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 96 [2020-10-26 23:34:53,141 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 100 [2020-10-26 23:34:53,668 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 106 [2020-10-26 23:34:54,301 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 92 [2020-10-26 23:34:54,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:34:54,873 INFO L93 Difference]: Finished difference Result 5988 states and 7053 transitions. [2020-10-26 23:34:54,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-26 23:34:54,881 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 706 [2020-10-26 23:34:54,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:34:54,903 INFO L225 Difference]: With dead ends: 5988 [2020-10-26 23:34:54,903 INFO L226 Difference]: Without dead ends: 3455 [2020-10-26 23:34:54,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=265, Invalid=665, Unknown=0, NotChecked=0, Total=930 [2020-10-26 23:34:54,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3455 states. [2020-10-26 23:34:55,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3455 to 3207. [2020-10-26 23:34:55,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3207 states. [2020-10-26 23:34:55,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 3705 transitions. [2020-10-26 23:34:55,049 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 3705 transitions. Word has length 706 [2020-10-26 23:34:55,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:34:55,050 INFO L481 AbstractCegarLoop]: Abstraction has 3207 states and 3705 transitions. [2020-10-26 23:34:55,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 23:34:55,050 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 3705 transitions. [2020-10-26 23:34:55,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2020-10-26 23:34:55,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:34:55,062 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:34:55,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:34:55,062 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:34:55,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:34:55,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1599333282, now seen corresponding path program 1 times [2020-10-26 23:34:55,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:34:55,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253275652] [2020-10-26 23:34:55,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:34:55,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:55,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:55,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:57,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:58,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:59,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:00,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:00,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 751 [2020-10-26 23:35:00,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:35:00,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-26 23:35:00,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:00,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:35:00,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:35:00,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 23:35:00,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:00,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:35:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:00,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:00,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:00,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:35:00,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:00,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:35:00,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:00,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:00,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:35:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:00,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:00,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:00,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:35:00,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:00,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:35:00,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:00,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:00,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:00,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:00,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:00,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:35:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:00,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:00,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:00,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:35:00,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:00,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:35:00,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:00,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:00,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:00,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:00,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:00,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:35:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:00,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:00,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:00,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:35:00,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:00,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:35:00,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:00,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:00,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:00,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:00,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:00,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:35:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:00,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:00,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:00,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:35:00,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:00,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:35:00,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:00,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:35:00,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:00,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:35:00,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:00,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:35:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:00,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:00,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:00,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:35:00,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:00,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-26 23:35:00,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:00,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:35:00,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:00,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:35:00,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:00,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 617 [2020-10-26 23:35:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:00,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:00,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:00,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:35:00,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:00,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:35:00,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:00,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:00,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:35:00,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:00,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1700 backedges. 640 proven. 82 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2020-10-26 23:35:01,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253275652] [2020-10-26 23:35:01,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:35:01,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:35:01,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518669064] [2020-10-26 23:35:01,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:35:01,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:35:01,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:35:01,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:35:01,216 INFO L87 Difference]: Start difference. First operand 3207 states and 3705 transitions. Second operand 7 states. [2020-10-26 23:35:03,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:35:03,436 INFO L93 Difference]: Finished difference Result 7530 states and 9066 transitions. [2020-10-26 23:35:03,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:35:03,437 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 729 [2020-10-26 23:35:03,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:35:03,464 INFO L225 Difference]: With dead ends: 7530 [2020-10-26 23:35:03,464 INFO L226 Difference]: Without dead ends: 4695 [2020-10-26 23:35:03,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:35:03,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4695 states. [2020-10-26 23:35:03,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4695 to 4319. [2020-10-26 23:35:03,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4319 states. [2020-10-26 23:35:03,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4319 states to 4319 states and 5065 transitions. [2020-10-26 23:35:03,598 INFO L78 Accepts]: Start accepts. Automaton has 4319 states and 5065 transitions. Word has length 729 [2020-10-26 23:35:03,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:35:03,600 INFO L481 AbstractCegarLoop]: Abstraction has 4319 states and 5065 transitions. [2020-10-26 23:35:03,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:35:03,600 INFO L276 IsEmpty]: Start isEmpty. Operand 4319 states and 5065 transitions. [2020-10-26 23:35:03,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2020-10-26 23:35:03,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:35:03,615 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:35:03,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:35:03,615 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:35:03,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:35:03,616 INFO L82 PathProgramCache]: Analyzing trace with hash -867486679, now seen corresponding path program 1 times [2020-10-26 23:35:03,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:35:03,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237657136] [2020-10-26 23:35:03,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:35:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:03,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:04,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:06,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:06,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:07,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:08,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:08,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 862 [2020-10-26 23:35:08,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:35:08,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-26 23:35:08,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:08,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:35:08,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:35:08,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:35:08,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:08,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:35:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:08,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:08,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:08,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:35:08,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:08,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:35:08,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:08,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:08,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:08,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:08,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:08,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:35:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:08,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:09,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:09,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:35:09,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:09,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:35:09,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:09,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:09,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:09,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:09,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:09,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:35:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:09,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:09,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:09,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:35:09,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:09,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:35:09,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:09,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:09,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:09,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:09,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:09,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:35:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:09,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:09,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:09,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:35:09,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:09,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:35:09,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:09,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:09,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:09,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:09,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:09,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:35:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:09,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:09,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:09,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:35:09,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:09,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:35:09,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:09,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:09,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:09,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:09,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:09,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:35:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:09,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:09,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:09,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:35:09,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:09,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-26 23:35:09,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:09,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:35:09,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:09,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:35:09,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:09,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:35:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:09,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:09,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:09,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:35:09,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:09,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:35:09,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:09,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:35:09,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:09,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:35:09,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:09,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2020-10-26 23:35:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:09,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:09,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:09,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-26 23:35:09,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:09,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:35:09,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:09,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:09,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-26 23:35:09,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:09,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2180 backedges. 593 proven. 72 refuted. 0 times theorem prover too weak. 1515 trivial. 0 not checked. [2020-10-26 23:35:09,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237657136] [2020-10-26 23:35:09,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:35:09,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:35:09,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290247144] [2020-10-26 23:35:09,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:35:09,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:35:09,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:35:09,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:35:09,947 INFO L87 Difference]: Start difference. First operand 4319 states and 5065 transitions. Second operand 7 states. [2020-10-26 23:35:13,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:35:13,284 INFO L93 Difference]: Finished difference Result 8805 states and 10410 transitions. [2020-10-26 23:35:13,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:35:13,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 838 [2020-10-26 23:35:13,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:35:13,310 INFO L225 Difference]: With dead ends: 8805 [2020-10-26 23:35:13,310 INFO L226 Difference]: Without dead ends: 4858 [2020-10-26 23:35:13,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:35:13,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4858 states. [2020-10-26 23:35:13,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4858 to 4772. [2020-10-26 23:35:13,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4772 states. [2020-10-26 23:35:13,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4772 states to 4772 states and 5590 transitions. [2020-10-26 23:35:13,455 INFO L78 Accepts]: Start accepts. Automaton has 4772 states and 5590 transitions. Word has length 838 [2020-10-26 23:35:13,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:35:13,457 INFO L481 AbstractCegarLoop]: Abstraction has 4772 states and 5590 transitions. [2020-10-26 23:35:13,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:35:13,457 INFO L276 IsEmpty]: Start isEmpty. Operand 4772 states and 5590 transitions. [2020-10-26 23:35:13,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2020-10-26 23:35:13,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:35:13,474 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:35:13,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:35:13,475 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:35:13,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:35:13,475 INFO L82 PathProgramCache]: Analyzing trace with hash 2060888045, now seen corresponding path program 1 times [2020-10-26 23:35:13,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:35:13,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577951415] [2020-10-26 23:35:13,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:35:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:13,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:13,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:16,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:16,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:18,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:18,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 888 [2020-10-26 23:35:18,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:35:18,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-26 23:35:18,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:18,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:35:18,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-26 23:35:18,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:35:18,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:18,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:35:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:18,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:18,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:18,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:35:18,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:18,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:35:18,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:18,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:18,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:18,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:18,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:18,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:35:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:18,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:18,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:18,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:35:18,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:18,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:35:18,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:18,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:18,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:18,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:18,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:18,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:35:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:18,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:19,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:19,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:35:19,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:19,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:35:19,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:19,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:19,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:35:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:19,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:19,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:19,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:35:19,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:19,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:35:19,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:19,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:19,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:19,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:19,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:19,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:35:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:19,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:19,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:19,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:35:19,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:19,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:35:19,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:19,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:19,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:19,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:19,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:19,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:35:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:19,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:19,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:19,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:35:19,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:19,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-26 23:35:19,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:19,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:35:19,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:19,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-26 23:35:19,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:19,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:35:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:19,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:19,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:19,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:35:19,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:19,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 23:35:19,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:19,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:35:19,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:19,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:35:19,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:19,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 749 [2020-10-26 23:35:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:19,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:19,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:19,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:35:19,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:19,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:35:19,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:19,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:19,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:35:19,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:19,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:20,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2230 backedges. 593 proven. 72 refuted. 0 times theorem prover too weak. 1565 trivial. 0 not checked. [2020-10-26 23:35:20,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577951415] [2020-10-26 23:35:20,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:35:20,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:35:20,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158973413] [2020-10-26 23:35:20,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:35:20,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:35:20,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:35:20,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:35:20,203 INFO L87 Difference]: Start difference. First operand 4772 states and 5590 transitions. Second operand 8 states. [2020-10-26 23:35:24,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:35:24,079 INFO L93 Difference]: Finished difference Result 9751 states and 11642 transitions. [2020-10-26 23:35:24,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:35:24,080 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 864 [2020-10-26 23:35:24,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:35:24,114 INFO L225 Difference]: With dead ends: 9751 [2020-10-26 23:35:24,115 INFO L226 Difference]: Without dead ends: 5351 [2020-10-26 23:35:24,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:35:24,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5351 states. [2020-10-26 23:35:24,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5351 to 5328. [2020-10-26 23:35:24,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5328 states. [2020-10-26 23:35:24,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5328 states to 5328 states and 6239 transitions. [2020-10-26 23:35:24,267 INFO L78 Accepts]: Start accepts. Automaton has 5328 states and 6239 transitions. Word has length 864 [2020-10-26 23:35:24,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:35:24,268 INFO L481 AbstractCegarLoop]: Abstraction has 5328 states and 6239 transitions. [2020-10-26 23:35:24,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:35:24,268 INFO L276 IsEmpty]: Start isEmpty. Operand 5328 states and 6239 transitions. [2020-10-26 23:35:24,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 908 [2020-10-26 23:35:24,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:35:24,285 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:35:24,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:35:24,285 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:35:24,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:35:24,286 INFO L82 PathProgramCache]: Analyzing trace with hash -755487274, now seen corresponding path program 1 times [2020-10-26 23:35:24,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:35:24,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68211862] [2020-10-26 23:35:24,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:35:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:24,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:25,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:27,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:29,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:29,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:29,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 933 [2020-10-26 23:35:29,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:35:29,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-26 23:35:29,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:29,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:35:29,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:35:29,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:35:29,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:29,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:35:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:29,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:29,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:29,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:35:29,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:29,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:35:29,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:29,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:29,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:29,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:29,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:29,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:35:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:29,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:29,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:29,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:35:29,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:29,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:35:29,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:29,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:29,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:29,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:29,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:29,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:35:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:29,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:29,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:29,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:35:29,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:29,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:35:29,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:29,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:29,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:29,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:29,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:29,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:35:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:29,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:29,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:29,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:35:29,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:29,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:35:29,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:29,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:29,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:29,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:29,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:29,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:35:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:29,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:29,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:29,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:35:29,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:29,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:35:29,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:29,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:29,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:29,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:29,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:29,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:35:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:29,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:29,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:29,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:35:29,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:29,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:35:29,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:29,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:29,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:29,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:29,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:29,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:35:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:29,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:29,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:29,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:35:29,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:29,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:35:29,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:29,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:35:29,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:29,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:35:29,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:29,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:35:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:29,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:30,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:30,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:35:30,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:30,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 23:35:30,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:30,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:35:30,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:30,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:35:30,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:30,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-10-26 23:35:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:30,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:30,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:30,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:30,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:35:30,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:35:30,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-26 23:35:30,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:30,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:35:30,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:30,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:35:30,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:31,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2791 backedges. 1366 proven. 59 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:35:31,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68211862] [2020-10-26 23:35:31,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:35:31,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:35:31,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454041048] [2020-10-26 23:35:31,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:35:31,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:35:31,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:35:31,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:35:31,367 INFO L87 Difference]: Start difference. First operand 5328 states and 6239 transitions. Second operand 9 states. [2020-10-26 23:35:31,820 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-26 23:35:33,285 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-26 23:35:35,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:35:35,210 INFO L93 Difference]: Finished difference Result 11682 states and 14103 transitions. [2020-10-26 23:35:35,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 23:35:35,211 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 907 [2020-10-26 23:35:35,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:35:35,242 INFO L225 Difference]: With dead ends: 11682 [2020-10-26 23:35:35,242 INFO L226 Difference]: Without dead ends: 6691 [2020-10-26 23:35:35,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-10-26 23:35:35,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6691 states. [2020-10-26 23:35:35,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6691 to 6638. [2020-10-26 23:35:35,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6638 states. [2020-10-26 23:35:35,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6638 states to 6638 states and 8080 transitions. [2020-10-26 23:35:35,437 INFO L78 Accepts]: Start accepts. Automaton has 6638 states and 8080 transitions. Word has length 907 [2020-10-26 23:35:35,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:35:35,438 INFO L481 AbstractCegarLoop]: Abstraction has 6638 states and 8080 transitions. [2020-10-26 23:35:35,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:35:35,438 INFO L276 IsEmpty]: Start isEmpty. Operand 6638 states and 8080 transitions. [2020-10-26 23:35:35,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 938 [2020-10-26 23:35:35,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:35:35,457 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-26 23:35:35,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:35:35,457 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:35:35,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:35:35,458 INFO L82 PathProgramCache]: Analyzing trace with hash 196251164, now seen corresponding path program 1 times [2020-10-26 23:35:35,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:35:35,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085444299] [2020-10-26 23:35:35,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:35:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:35,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:35,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:36,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:36,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:36,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:38,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:40,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:40,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 963 [2020-10-26 23:35:40,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:35:40,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 23:35:40,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:40,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:35:40,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:35:40,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-26 23:35:40,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:40,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:35:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:40,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:40,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:40,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:35:40,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:40,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:35:40,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:40,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:40,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:40,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:40,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:40,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:35:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:40,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:40,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:40,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:35:40,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:40,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:35:40,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:40,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:40,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:40,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:40,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:40,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:35:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:40,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:40,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:40,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:35:40,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:40,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:35:40,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:40,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:40,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:40,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:40,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:40,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:35:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:40,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:40,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:40,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:35:40,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:40,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:35:40,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:40,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:40,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:40,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:35:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:41,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:41,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:41,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:35:41,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:41,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 23:35:41,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:41,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:35:41,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:41,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:35:41,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:41,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:35:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:41,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:41,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:41,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:41,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:35:41,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:35:41,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-26 23:35:41,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:41,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:35:41,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:41,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:35:41,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:41,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2020-10-26 23:35:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:41,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:41,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:41,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:35:41,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:41,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:35:41,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:41,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:35:41,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:41,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:35:41,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:41,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2020-10-26 23:35:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:41,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:41,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:41,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:35:41,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:41,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:35:41,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:41,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:41,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:35:41,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:41,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:41,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 774 [2020-10-26 23:35:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:41,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:41,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:41,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-26 23:35:41,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:41,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:35:41,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:41,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:41,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-26 23:35:41,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:41,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:42,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2933 backedges. 1046 proven. 334 refuted. 0 times theorem prover too weak. 1553 trivial. 0 not checked. [2020-10-26 23:35:42,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085444299] [2020-10-26 23:35:42,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:35:42,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:35:42,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244971775] [2020-10-26 23:35:42,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:35:42,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:35:42,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:35:42,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:35:42,331 INFO L87 Difference]: Start difference. First operand 6638 states and 8080 transitions. Second operand 7 states. [2020-10-26 23:35:45,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:35:45,181 INFO L93 Difference]: Finished difference Result 13664 states and 16771 transitions. [2020-10-26 23:35:45,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:35:45,182 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 937 [2020-10-26 23:35:45,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:35:45,213 INFO L225 Difference]: With dead ends: 13664 [2020-10-26 23:35:45,213 INFO L226 Difference]: Without dead ends: 7398 [2020-10-26 23:35:45,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:35:45,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7398 states. [2020-10-26 23:35:45,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7398 to 7374. [2020-10-26 23:35:45,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7374 states. [2020-10-26 23:35:45,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7374 states to 7374 states and 8894 transitions. [2020-10-26 23:35:45,442 INFO L78 Accepts]: Start accepts. Automaton has 7374 states and 8894 transitions. Word has length 937 [2020-10-26 23:35:45,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:35:45,443 INFO L481 AbstractCegarLoop]: Abstraction has 7374 states and 8894 transitions. [2020-10-26 23:35:45,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:35:45,443 INFO L276 IsEmpty]: Start isEmpty. Operand 7374 states and 8894 transitions. [2020-10-26 23:35:45,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 941 [2020-10-26 23:35:45,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:35:45,461 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:35:45,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:35:45,461 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:35:45,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:35:45,462 INFO L82 PathProgramCache]: Analyzing trace with hash 406409848, now seen corresponding path program 1 times [2020-10-26 23:35:45,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:35:45,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452872956] [2020-10-26 23:35:45,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:35:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:45,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:46,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:47,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:48,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:50,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:50,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 966 [2020-10-26 23:35:50,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:35:50,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-26 23:35:50,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:50,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:35:50,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:35:50,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-26 23:35:50,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:50,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:35:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:50,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:50,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:50,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:35:50,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:50,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:35:50,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:50,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:50,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:50,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:50,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:50,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:35:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:50,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:50,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:50,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:35:50,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:50,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:35:50,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:50,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:50,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:50,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:50,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:50,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:35:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:50,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:50,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:50,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:35:50,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:50,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:35:50,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:50,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:50,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:50,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:50,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:50,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:35:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:51,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:51,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:51,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:35:51,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:51,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:35:51,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:51,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:51,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:51,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:51,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:51,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:35:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:51,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:51,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:51,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:35:51,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:51,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:35:51,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:51,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:51,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:51,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:51,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:51,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:35:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:51,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:51,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:51,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:35:51,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:51,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:35:51,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:51,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:51,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:51,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:51,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:51,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:35:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:51,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:51,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:51,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:35:51,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:51,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:35:51,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:51,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:35:51,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:51,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:35:51,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:51,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:35:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:51,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:51,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:51,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 23:35:51,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:51,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-26 23:35:51,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:51,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:35:51,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:51,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-26 23:35:51,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:51,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 825 [2020-10-26 23:35:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:51,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:51,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:51,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:51,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:35:51,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:35:51,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-26 23:35:51,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:51,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:35:51,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:51,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:35:51,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:52,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2827 backedges. 1402 proven. 59 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:35:52,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452872956] [2020-10-26 23:35:52,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:35:52,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:35:52,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223030784] [2020-10-26 23:35:52,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:35:52,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:35:52,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:35:52,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:35:52,854 INFO L87 Difference]: Start difference. First operand 7374 states and 8894 transitions. Second operand 9 states. [2020-10-26 23:35:54,697 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-26 23:35:56,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:35:56,539 INFO L93 Difference]: Finished difference Result 14456 states and 17538 transitions. [2020-10-26 23:35:56,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 23:35:56,540 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 940 [2020-10-26 23:35:56,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:35:56,566 INFO L225 Difference]: With dead ends: 14456 [2020-10-26 23:35:56,567 INFO L226 Difference]: Without dead ends: 7421 [2020-10-26 23:35:56,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-26 23:35:56,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7421 states. [2020-10-26 23:35:56,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7421 to 7374. [2020-10-26 23:35:56,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7374 states. [2020-10-26 23:35:56,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7374 states to 7374 states and 8888 transitions. [2020-10-26 23:35:56,767 INFO L78 Accepts]: Start accepts. Automaton has 7374 states and 8888 transitions. Word has length 940 [2020-10-26 23:35:56,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:35:56,768 INFO L481 AbstractCegarLoop]: Abstraction has 7374 states and 8888 transitions. [2020-10-26 23:35:56,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:35:56,769 INFO L276 IsEmpty]: Start isEmpty. Operand 7374 states and 8888 transitions. [2020-10-26 23:35:56,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 942 [2020-10-26 23:35:56,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:35:56,786 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:35:56,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:35:56,786 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:35:56,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:35:56,787 INFO L82 PathProgramCache]: Analyzing trace with hash -245677478, now seen corresponding path program 1 times [2020-10-26 23:35:56,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:35:56,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997043122] [2020-10-26 23:35:56,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:35:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:57,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:57,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:01,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:02,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:02,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:02,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 967 [2020-10-26 23:36:02,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:36:02,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5126 [2020-10-26 23:36:02,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:02,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:36:02,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:36:02,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-26 23:36:02,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:02,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:36:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:02,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:02,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:02,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:36:02,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:02,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:36:02,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:02,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:02,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:02,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:02,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:36:02,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:36:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:02,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:02,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:02,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:36:02,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:02,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:36:02,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:02,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:02,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:02,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:02,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:02,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:36:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:02,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:02,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:02,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:36:02,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:02,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:36:02,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:02,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:02,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:02,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:02,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:02,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:36:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:02,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:02,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:02,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:36:02,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:02,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:36:02,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:02,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:02,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:02,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:02,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:02,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:36:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:02,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:02,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:02,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:36:02,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:02,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:36:02,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:02,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:02,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:02,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:02,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:02,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:36:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:02,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:02,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:02,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:36:02,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:02,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:36:02,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:02,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:02,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:02,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:02,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:02,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:36:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:02,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:02,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:02,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:36:02,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:02,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:36:02,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:02,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:36:02,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:02,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:36:02,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:02,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:36:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:02,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:03,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:03,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 23:36:03,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:03,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-26 23:36:03,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:03,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:36:03,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:36:03,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:36:03,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:03,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 826 [2020-10-26 23:36:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:03,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:03,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:03,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:03,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:36:03,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:36:03,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-26 23:36:03,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:03,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:36:03,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:36:03,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:36:03,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:04,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2828 backedges. 1377 proven. 6 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2020-10-26 23:36:04,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997043122] [2020-10-26 23:36:04,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:36:04,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:36:04,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846532864] [2020-10-26 23:36:04,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:36:04,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:36:04,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:36:04,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:36:04,233 INFO L87 Difference]: Start difference. First operand 7374 states and 8888 transitions. Second operand 9 states. [2020-10-26 23:36:07,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:36:07,848 INFO L93 Difference]: Finished difference Result 14469 states and 17561 transitions. [2020-10-26 23:36:07,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 23:36:07,849 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 941 [2020-10-26 23:36:07,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:36:07,888 INFO L225 Difference]: With dead ends: 14469 [2020-10-26 23:36:07,888 INFO L226 Difference]: Without dead ends: 7395 [2020-10-26 23:36:07,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-26 23:36:07,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7395 states. [2020-10-26 23:36:08,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7395 to 7378. [2020-10-26 23:36:08,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7378 states. [2020-10-26 23:36:08,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7378 states to 7378 states and 8857 transitions. [2020-10-26 23:36:08,086 INFO L78 Accepts]: Start accepts. Automaton has 7378 states and 8857 transitions. Word has length 941 [2020-10-26 23:36:08,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:36:08,087 INFO L481 AbstractCegarLoop]: Abstraction has 7378 states and 8857 transitions. [2020-10-26 23:36:08,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:36:08,087 INFO L276 IsEmpty]: Start isEmpty. Operand 7378 states and 8857 transitions. [2020-10-26 23:36:08,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2020-10-26 23:36:08,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:36:08,104 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:36:08,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:36:08,105 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:36:08,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:36:08,105 INFO L82 PathProgramCache]: Analyzing trace with hash -246651656, now seen corresponding path program 1 times [2020-10-26 23:36:08,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:36:08,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188934836] [2020-10-26 23:36:08,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:36:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:08,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:08,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:09,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:11,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:13,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:13,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 978 [2020-10-26 23:36:13,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:36:13,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-26 23:36:13,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:13,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:36:13,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:36:13,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-26 23:36:13,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:13,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:36:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:13,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:13,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:13,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:36:13,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:13,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:36:13,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:13,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:13,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:13,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:13,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:13,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:36:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:13,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:13,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:13,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:36:13,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:13,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:36:13,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:13,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:13,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:13,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:13,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:13,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:36:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:13,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:13,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:13,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:36:13,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:13,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:36:13,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:13,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:13,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:36:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:13,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:13,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:13,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:36:13,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:13,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:36:13,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:13,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:13,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:36:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:13,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:13,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:13,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:36:13,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:13,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:36:13,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:13,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:13,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:13,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:13,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:13,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:36:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:13,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:13,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:13,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:36:13,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:13,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-26 23:36:13,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:13,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:36:13,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:13,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:36:13,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:13,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:36:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:13,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:13,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:13,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:36:13,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:13,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-26 23:36:13,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:13,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:36:13,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:36:13,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:36:13,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:14,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2020-10-26 23:36:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:14,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:14,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:14,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:36:14,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:14,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:36:14,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:14,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:14,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:36:14,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:14,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:14,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 837 [2020-10-26 23:36:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:14,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:14,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:14,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:36:14,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:14,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:36:14,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:14,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:14,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:36:14,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:14,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:14,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 856 proven. 155 refuted. 0 times theorem prover too weak. 1810 trivial. 0 not checked. [2020-10-26 23:36:14,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188934836] [2020-10-26 23:36:14,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:36:14,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:36:14,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291832883] [2020-10-26 23:36:14,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:36:14,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:36:14,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:36:14,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:36:14,909 INFO L87 Difference]: Start difference. First operand 7378 states and 8857 transitions. Second operand 7 states. [2020-10-26 23:36:17,077 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 23:36:17,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:36:17,545 INFO L93 Difference]: Finished difference Result 14960 states and 18138 transitions. [2020-10-26 23:36:17,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:36:17,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 952 [2020-10-26 23:36:17,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:36:17,573 INFO L225 Difference]: With dead ends: 14960 [2020-10-26 23:36:17,573 INFO L226 Difference]: Without dead ends: 7954 [2020-10-26 23:36:17,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:36:17,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7954 states. [2020-10-26 23:36:17,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7954 to 7936. [2020-10-26 23:36:17,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7936 states. [2020-10-26 23:36:17,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7936 states to 7936 states and 9531 transitions. [2020-10-26 23:36:17,788 INFO L78 Accepts]: Start accepts. Automaton has 7936 states and 9531 transitions. Word has length 952 [2020-10-26 23:36:17,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:36:17,790 INFO L481 AbstractCegarLoop]: Abstraction has 7936 states and 9531 transitions. [2020-10-26 23:36:17,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:36:17,790 INFO L276 IsEmpty]: Start isEmpty. Operand 7936 states and 9531 transitions. [2020-10-26 23:36:17,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 973 [2020-10-26 23:36:17,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:36:17,808 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:36:17,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:36:17,809 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:36:17,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:36:17,810 INFO L82 PathProgramCache]: Analyzing trace with hash 602494648, now seen corresponding path program 1 times [2020-10-26 23:36:17,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:36:17,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270910792] [2020-10-26 23:36:17,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:36:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:18,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:18,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:23,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:23,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 998 [2020-10-26 23:36:23,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:36:23,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-26 23:36:23,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:23,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:36:23,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:36:23,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-26 23:36:23,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:23,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:36:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:23,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:23,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:23,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:36:23,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:23,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:36:23,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:23,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:23,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:23,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:23,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:23,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:36:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:23,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:23,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:23,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:36:23,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:23,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:36:23,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:23,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:23,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:23,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:23,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:23,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:36:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:23,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:23,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:23,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:36:23,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:23,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-26 23:36:23,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:23,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:23,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:23,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:23,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:23,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:36:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:23,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:23,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:23,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:36:23,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:23,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:36:23,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:23,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:23,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:36:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:23,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:23,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:23,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:36:23,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:23,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:36:23,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:23,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:23,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:23,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:23,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:23,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:36:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:23,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:23,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:23,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:36:23,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:23,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:36:23,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:23,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:23,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:23,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:36:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:23,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:23,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:23,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:36:23,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:23,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:36:23,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:23,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:36:23,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:23,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:36:23,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:23,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:36:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:23,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:24,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:24,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:36:24,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:24,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-26 23:36:24,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:24,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:36:24,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:36:24,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:36:24,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:24,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:36:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:24,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:24,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:24,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:36:24,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:24,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:36:24,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:24,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:36:24,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:36:24,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:36:24,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:24,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2857 backedges. 1406 proven. 6 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2020-10-26 23:36:24,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270910792] [2020-10-26 23:36:24,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:36:24,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:36:24,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664648585] [2020-10-26 23:36:24,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:36:24,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:36:24,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:36:24,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:36:24,801 INFO L87 Difference]: Start difference. First operand 7936 states and 9531 transitions. Second operand 9 states. [2020-10-26 23:36:29,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:36:29,084 INFO L93 Difference]: Finished difference Result 15889 states and 19161 transitions. [2020-10-26 23:36:29,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 23:36:29,092 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 972 [2020-10-26 23:36:29,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:36:29,114 INFO L225 Difference]: With dead ends: 15889 [2020-10-26 23:36:29,114 INFO L226 Difference]: Without dead ends: 8325 [2020-10-26 23:36:29,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-26 23:36:29,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8325 states. [2020-10-26 23:36:29,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8325 to 8304. [2020-10-26 23:36:29,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8304 states. [2020-10-26 23:36:29,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8304 states to 8304 states and 9854 transitions. [2020-10-26 23:36:29,309 INFO L78 Accepts]: Start accepts. Automaton has 8304 states and 9854 transitions. Word has length 972 [2020-10-26 23:36:29,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:36:29,310 INFO L481 AbstractCegarLoop]: Abstraction has 8304 states and 9854 transitions. [2020-10-26 23:36:29,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:36:29,311 INFO L276 IsEmpty]: Start isEmpty. Operand 8304 states and 9854 transitions. [2020-10-26 23:36:29,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2020-10-26 23:36:29,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:36:29,327 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 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] [2020-10-26 23:36:29,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:36:29,328 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:36:29,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:36:29,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1758427620, now seen corresponding path program 1 times [2020-10-26 23:36:29,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:36:29,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480900229] [2020-10-26 23:36:29,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:36:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:29,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:29,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:36,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:36,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1052 [2020-10-26 23:36:36,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:36:36,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7376 [2020-10-26 23:36:36,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:36,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:36:36,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:36:36,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:36:36,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:36:37,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:36:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:37,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:37,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:37,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:36:37,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:37,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:36:37,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:37,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:37,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:36:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:37,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:37,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:37,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:36:37,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:37,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:36:37,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:37,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:37,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:37,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:37,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:37,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:36:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:37,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:37,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:37,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:36:37,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:37,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:36:37,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:37,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:37,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:37,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:37,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:37,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:36:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:37,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:37,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:37,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:36:37,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:37,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:36:37,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:37,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:37,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:37,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:37,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:37,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:36:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:37,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:37,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:37,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:36:37,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:37,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:36:37,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:37,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:37,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:37,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:37,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:37,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:36:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:37,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:37,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:37,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:36:37,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:37,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:36:37,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:37,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:37,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:37,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:37,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:37,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:36:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:37,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:37,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:37,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:36:37,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:37,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-26 23:36:37,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:37,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:36:37,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:37,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:36:37,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:37,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:36:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:37,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:37,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:37,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:36:37,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:37,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 23:36:37,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:37,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:36:37,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:36:37,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:36:37,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:37,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 911 [2020-10-26 23:36:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:38,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:38,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:38,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:38,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:36:38,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:36:38,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-26 23:36:38,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:38,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:36:38,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:36:38,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:36:38,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:38,447 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-10-26 23:36:39,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3075 backedges. 1185 proven. 76 refuted. 0 times theorem prover too weak. 1814 trivial. 0 not checked. [2020-10-26 23:36:39,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480900229] [2020-10-26 23:36:39,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:36:39,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:36:39,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198618077] [2020-10-26 23:36:39,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:36:39,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:36:39,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:36:39,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:36:39,775 INFO L87 Difference]: Start difference. First operand 8304 states and 9854 transitions. Second operand 10 states. [2020-10-26 23:36:41,833 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2020-10-26 23:36:42,340 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 38 [2020-10-26 23:36:42,558 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-26 23:36:43,829 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2020-10-26 23:36:44,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:36:44,581 INFO L93 Difference]: Finished difference Result 16513 states and 19684 transitions. [2020-10-26 23:36:44,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 23:36:44,583 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1026 [2020-10-26 23:36:44,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:36:44,608 INFO L225 Difference]: With dead ends: 16513 [2020-10-26 23:36:44,608 INFO L226 Difference]: Without dead ends: 8546 [2020-10-26 23:36:44,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2020-10-26 23:36:44,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8546 states. [2020-10-26 23:36:44,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8546 to 8488. [2020-10-26 23:36:44,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8488 states. [2020-10-26 23:36:44,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8488 states to 8488 states and 10050 transitions. [2020-10-26 23:36:44,838 INFO L78 Accepts]: Start accepts. Automaton has 8488 states and 10050 transitions. Word has length 1026 [2020-10-26 23:36:44,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:36:44,840 INFO L481 AbstractCegarLoop]: Abstraction has 8488 states and 10050 transitions. [2020-10-26 23:36:44,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:36:44,840 INFO L276 IsEmpty]: Start isEmpty. Operand 8488 states and 10050 transitions. [2020-10-26 23:36:44,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1046 [2020-10-26 23:36:44,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:36:44,859 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:36:44,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 23:36:44,859 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:36:44,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:36:44,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1311446831, now seen corresponding path program 1 times [2020-10-26 23:36:44,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:36:44,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895604318] [2020-10-26 23:36:44,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:36:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:45,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:45,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:48,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:49,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:50,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:50,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1073 [2020-10-26 23:36:50,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:36:50,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 23:36:50,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:50,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:36:50,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-26 23:36:50,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:36:50,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:50,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:36:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:50,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:50,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:50,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:36:50,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:50,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:36:50,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:50,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:50,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:50,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:50,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:50,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:36:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:50,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:50,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:50,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:36:50,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:50,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:36:50,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:50,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:50,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:50,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:50,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:50,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:36:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:50,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:50,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:50,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:36:50,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:50,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:36:50,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:50,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:50,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:50,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:50,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:50,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:36:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:50,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:50,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:50,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:36:50,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:50,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:36:50,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:50,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:50,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:50,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:50,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:50,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:36:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:50,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:50,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:50,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:36:50,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:50,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:36:50,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:50,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:50,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:50,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:50,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:50,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:36:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:50,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:50,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:50,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:36:50,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:50,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:36:50,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:50,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:50,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:50,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:50,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:50,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:36:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:50,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:50,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:50,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:36:50,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:50,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:36:50,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:50,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:50,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:36:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:50,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:50,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:50,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:36:50,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:50,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-26 23:36:50,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:50,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:36:50,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:50,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-26 23:36:50,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:50,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:36:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:50,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:50,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:50,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:36:50,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:50,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 23:36:50,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:50,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:36:50,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:36:50,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:36:50,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:50,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 930 [2020-10-26 23:36:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:50,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:50,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:50,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:36:50,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:50,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:36:50,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:50,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:50,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:36:50,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:50,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:51,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3470 backedges. 809 proven. 72 refuted. 0 times theorem prover too weak. 2589 trivial. 0 not checked. [2020-10-26 23:36:51,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895604318] [2020-10-26 23:36:51,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:36:51,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:36:51,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366733780] [2020-10-26 23:36:51,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:36:51,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:36:51,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:36:51,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:36:51,550 INFO L87 Difference]: Start difference. First operand 8488 states and 10050 transitions. Second operand 7 states.