/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:02:38,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:02:38,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:02:38,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:02:38,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:02:38,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:02:38,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:02:38,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:02:38,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:02:38,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:02:38,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:02:38,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:02:38,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:02:38,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:02:38,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:02:38,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:02:38,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:02:38,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:02:38,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:02:38,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:02:38,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:02:38,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:02:38,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:02:38,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:02:38,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:02:38,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:02:38,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:02:38,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:02:38,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:02:38,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:02:38,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:02:38,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:02:38,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:02:38,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:02:38,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:02:38,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:02:38,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:02:38,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:02:38,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:02:38,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:02:38,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:02:38,897 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 [2020-10-28 13:02:38,950 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:02:38,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:02:38,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:02:38,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:02:38,953 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:02:38,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:02:38,954 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:02:38,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:02:38,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:02:38,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:02:38,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:02:38,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:02:38,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:02:38,955 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:02:38,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:02:38,956 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:02:38,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:02:38,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:02:38,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:02:38,957 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:02:38,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:02:38,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:02:38,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:02:38,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:02:38,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:02:38,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:02:38,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:02:38,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:02:38,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:02:38,959 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:02:39,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:02:39,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:02:39,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:02:39,485 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:02:39,487 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:02:39,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label14.c [2020-10-28 13:02:39,588 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39311de76/ab25db81b7bf49d2a544c2cf792c4bca/FLAG26370ae83 [2020-10-28 13:02:40,612 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:02:40,613 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label14.c [2020-10-28 13:02:40,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39311de76/ab25db81b7bf49d2a544c2cf792c4bca/FLAG26370ae83 [2020-10-28 13:02:40,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39311de76/ab25db81b7bf49d2a544c2cf792c4bca [2020-10-28 13:02:40,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:02:40,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:02:40,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:02:40,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:02:40,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:02:40,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:02:40" (1/1) ... [2020-10-28 13:02:40,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fec80b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:02:40, skipping insertion in model container [2020-10-28 13:02:40,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:02:40" (1/1) ... [2020-10-28 13:02:40,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:02:40,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:02:41,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:02:41,754 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:02:42,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:02:42,117 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:02:42,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:02:42 WrapperNode [2020-10-28 13:02:42,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:02:42,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:02:42,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:02:42,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:02:42,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:02:42" (1/1) ... [2020-10-28 13:02:42,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:02:42" (1/1) ... [2020-10-28 13:02:42,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:02:42" (1/1) ... [2020-10-28 13:02:42,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:02:42" (1/1) ... [2020-10-28 13:02:42,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:02:42" (1/1) ... [2020-10-28 13:02:42,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:02:42" (1/1) ... [2020-10-28 13:02:42,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:02:42" (1/1) ... [2020-10-28 13:02:42,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:02:42,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:02:42,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:02:42,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:02:42,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:02:42" (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 [2020-10-28 13:02:42,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:02:42,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:02:42,508 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:02:42,508 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:02:42,508 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:02:42,508 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:02:42,508 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:02:42,509 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:02:42,509 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:02:42,509 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:02:42,509 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:02:42,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:02:42,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:02:42,510 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:02:42,510 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:02:42,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:02:42,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:02:42,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:02:42,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:02:42,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:02:42,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:02:46,309 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:02:46,309 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:02:46,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:02:46 BoogieIcfgContainer [2020-10-28 13:02:46,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:02:46,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:02:46,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:02:46,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:02:46,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:02:40" (1/3) ... [2020-10-28 13:02:46,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5f4760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:02:46, skipping insertion in model container [2020-10-28 13:02:46,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:02:42" (2/3) ... [2020-10-28 13:02:46,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5f4760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:02:46, skipping insertion in model container [2020-10-28 13:02:46,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:02:46" (3/3) ... [2020-10-28 13:02:46,324 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label14.c [2020-10-28 13:02:46,340 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:02:46,349 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:02:46,365 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:02:46,402 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:02:46,403 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:02:46,403 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:02:46,403 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:02:46,403 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:02:46,403 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:02:46,404 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:02:46,404 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:02:46,435 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-28 13:02:46,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 13:02:46,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:02:46,444 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] [2020-10-28 13:02:46,445 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:02:46,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:02:46,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1871102583, now seen corresponding path program 1 times [2020-10-28 13:02:46,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:02:46,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973918364] [2020-10-28 13:02:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:02:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:46,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:47,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:47,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 13:02:47,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:47,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 677 [2020-10-28 13:02:47,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:47,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:47,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:02:47,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:02:47,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 13:02:47,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 13:02:47,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:02:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:47,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:47,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:47,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:02:47,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:47,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:02:47,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:47,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:47,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:02:47,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:47,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:02:47,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:02:47,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:02:47,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973918364] [2020-10-28 13:02:47,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:02:47,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:02:47,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071279778] [2020-10-28 13:02:47,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:02:47,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:02:47,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:02:47,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:02:47,670 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-28 13:02:53,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:02:53,899 INFO L93 Difference]: Finished difference Result 1208 states and 2172 transitions. [2020-10-28 13:02:53,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:02:53,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-28 13:02:53,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:02:53,925 INFO L225 Difference]: With dead ends: 1208 [2020-10-28 13:02:53,926 INFO L226 Difference]: Without dead ends: 703 [2020-10-28 13:02:53,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:02:53,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-28 13:02:54,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 697. [2020-10-28 13:02:54,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-10-28 13:02:54,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1016 transitions. [2020-10-28 13:02:54,090 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1016 transitions. Word has length 22 [2020-10-28 13:02:54,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:02:54,091 INFO L481 AbstractCegarLoop]: Abstraction has 697 states and 1016 transitions. [2020-10-28 13:02:54,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:02:54,092 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1016 transitions. [2020-10-28 13:02:54,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 13:02:54,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:02:54,104 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:02:54,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:02:54,104 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:02:54,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:02:54,108 INFO L82 PathProgramCache]: Analyzing trace with hash 137838371, now seen corresponding path program 1 times [2020-10-28 13:02:54,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:02:54,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033503687] [2020-10-28 13:02:54,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:02:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:54,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:54,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:55,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:55,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:55,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:02:55,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:02:55,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1368 [2020-10-28 13:02:55,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:55,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:55,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:02:55,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:02:55,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 13:02:55,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:02:55,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:02:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:55,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:55,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:55,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:02:55,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:55,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:02:55,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:55,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:55,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:02:55,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:55,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:02:55,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 13:02:55,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:02:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:55,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:56,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:56,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 13:02:56,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:56,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-28 13:02:56,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:56,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:56,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:56,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:02:56,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:02:56,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:56,174 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:02:56,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033503687] [2020-10-28 13:02:56,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:02:56,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:02:56,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649211888] [2020-10-28 13:02:56,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:02:56,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:02:56,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:02:56,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:02:56,184 INFO L87 Difference]: Start difference. First operand 697 states and 1016 transitions. Second operand 7 states. [2020-10-28 13:03:03,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:03:03,848 INFO L93 Difference]: Finished difference Result 2057 states and 3021 transitions. [2020-10-28 13:03:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:03:03,849 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2020-10-28 13:03:03,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:03:03,862 INFO L225 Difference]: With dead ends: 2057 [2020-10-28 13:03:03,862 INFO L226 Difference]: Without dead ends: 1366 [2020-10-28 13:03:03,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:03:03,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2020-10-28 13:03:03,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1338. [2020-10-28 13:03:03,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1338 states. [2020-10-28 13:03:03,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1730 transitions. [2020-10-28 13:03:03,953 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1730 transitions. Word has length 101 [2020-10-28 13:03:03,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:03:03,954 INFO L481 AbstractCegarLoop]: Abstraction has 1338 states and 1730 transitions. [2020-10-28 13:03:03,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:03:03,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1730 transitions. [2020-10-28 13:03:03,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-28 13:03:03,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:03,965 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:03:03,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:03:03,965 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:03,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:03,966 INFO L82 PathProgramCache]: Analyzing trace with hash 2004092959, now seen corresponding path program 1 times [2020-10-28 13:03:03,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:03,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175195809] [2020-10-28 13:03:03,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:04,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:04,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:05,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:06,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:06,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-28 13:03:06,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:03:06,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2446 [2020-10-28 13:03:06,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:06,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:06,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:03:06,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:03:06,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 13:03:06,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:03:06,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:06,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:06,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:06,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:06,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:06,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:03:06,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:06,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:03:06,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:03:06,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:03:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:06,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:07,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:07,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:03:07,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:07,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-10-28 13:03:07,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:07,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:07,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:07,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:03:07,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:03:07,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:03:07,802 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:03:07,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175195809] [2020-10-28 13:03:07,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:03:07,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 13:03:07,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536988706] [2020-10-28 13:03:07,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:03:07,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:07,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:03:07,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:03:07,809 INFO L87 Difference]: Start difference. First operand 1338 states and 1730 transitions. Second operand 8 states. [2020-10-28 13:03:15,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:03:15,914 INFO L93 Difference]: Finished difference Result 3010 states and 3818 transitions. [2020-10-28 13:03:15,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:03:15,918 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 222 [2020-10-28 13:03:15,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:03:15,927 INFO L225 Difference]: With dead ends: 3010 [2020-10-28 13:03:15,928 INFO L226 Difference]: Without dead ends: 1678 [2020-10-28 13:03:15,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:03:15,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2020-10-28 13:03:15,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1651. [2020-10-28 13:03:15,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1651 states. [2020-10-28 13:03:15,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2053 transitions. [2020-10-28 13:03:15,994 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2053 transitions. Word has length 222 [2020-10-28 13:03:15,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:03:15,996 INFO L481 AbstractCegarLoop]: Abstraction has 1651 states and 2053 transitions. [2020-10-28 13:03:15,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:03:15,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2053 transitions. [2020-10-28 13:03:16,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-28 13:03:16,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:16,002 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:03:16,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:03:16,003 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:16,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:16,003 INFO L82 PathProgramCache]: Analyzing trace with hash -364225162, now seen corresponding path program 1 times [2020-10-28 13:03:16,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:16,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975044120] [2020-10-28 13:03:16,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:16,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:16,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:17,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:17,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-28 13:03:17,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:03:17,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1557 [2020-10-28 13:03:17,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:17,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:17,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:17,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:03:17,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 13:03:17,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:17,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:17,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:17,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:17,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:17,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:17,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:03:17,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:17,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:17,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:17,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:17,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:17,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:17,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:03:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:18,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:18,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:18,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:03:18,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:18,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-28 13:03:18,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:18,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:18,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:18,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:03:18,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:03:18,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975044120] [2020-10-28 13:03:18,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:03:18,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:03:18,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054263645] [2020-10-28 13:03:18,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:03:18,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:18,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:03:18,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:03:18,599 INFO L87 Difference]: Start difference. First operand 1651 states and 2053 transitions. Second operand 5 states. [2020-10-28 13:03:28,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:03:28,293 INFO L93 Difference]: Finished difference Result 3921 states and 5052 transitions. [2020-10-28 13:03:28,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:03:28,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 296 [2020-10-28 13:03:28,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:03:28,309 INFO L225 Difference]: With dead ends: 3921 [2020-10-28 13:03:28,309 INFO L226 Difference]: Without dead ends: 2583 [2020-10-28 13:03:28,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:03:28,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2583 states. [2020-10-28 13:03:28,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2583 to 2274. [2020-10-28 13:03:28,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2274 states. [2020-10-28 13:03:28,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2274 states to 2274 states and 2804 transitions. [2020-10-28 13:03:28,396 INFO L78 Accepts]: Start accepts. Automaton has 2274 states and 2804 transitions. Word has length 296 [2020-10-28 13:03:28,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:03:28,397 INFO L481 AbstractCegarLoop]: Abstraction has 2274 states and 2804 transitions. [2020-10-28 13:03:28,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:03:28,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2274 states and 2804 transitions. [2020-10-28 13:03:28,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-28 13:03:28,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:28,405 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:03:28,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:03:28,406 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:28,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:28,406 INFO L82 PathProgramCache]: Analyzing trace with hash -553090917, now seen corresponding path program 1 times [2020-10-28 13:03:28,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:28,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724473320] [2020-10-28 13:03:28,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:28,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:28,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:31,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:31,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-28 13:03:31,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:03:31,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2682 [2020-10-28 13:03:31,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:31,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:03:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:03:31,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:31,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:31,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:31,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:31,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:31,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:31,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:03:31,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:31,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:31,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:31,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:31,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:31,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:31,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:03:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:31,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:31,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:31,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:03:31,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:31,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-28 13:03:31,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:31,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:31,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:31,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:31,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:03:31,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:32,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:03:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:32,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:32,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:32,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:03:32,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:32,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 13:03:32,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:32,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:03:32,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:03:32,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:32,346 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:03:32,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724473320] [2020-10-28 13:03:32,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:03:32,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:03:32,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495286335] [2020-10-28 13:03:32,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:03:32,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:32,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:03:32,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:03:32,349 INFO L87 Difference]: Start difference. First operand 2274 states and 2804 transitions. Second operand 7 states. [2020-10-28 13:03:44,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:03:44,547 INFO L93 Difference]: Finished difference Result 5576 states and 7150 transitions. [2020-10-28 13:03:44,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:03:44,548 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 376 [2020-10-28 13:03:44,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:03:44,567 INFO L225 Difference]: With dead ends: 5576 [2020-10-28 13:03:44,568 INFO L226 Difference]: Without dead ends: 3615 [2020-10-28 13:03:44,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:03:44,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3615 states. [2020-10-28 13:03:44,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3615 to 3260. [2020-10-28 13:03:44,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3260 states. [2020-10-28 13:03:44,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3260 states to 3260 states and 3970 transitions. [2020-10-28 13:03:44,677 INFO L78 Accepts]: Start accepts. Automaton has 3260 states and 3970 transitions. Word has length 376 [2020-10-28 13:03:44,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:03:44,678 INFO L481 AbstractCegarLoop]: Abstraction has 3260 states and 3970 transitions. [2020-10-28 13:03:44,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:03:44,678 INFO L276 IsEmpty]: Start isEmpty. Operand 3260 states and 3970 transitions. [2020-10-28 13:03:44,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-10-28 13:03:44,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:44,689 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:03:44,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:03:44,689 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:44,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:44,690 INFO L82 PathProgramCache]: Analyzing trace with hash 511279799, now seen corresponding path program 1 times [2020-10-28 13:03:44,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:44,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704548333] [2020-10-28 13:03:44,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:44,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:45,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:45,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:45,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:49,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:49,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:49,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-28 13:03:49,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:03:49,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 13:03:49,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:49,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:49,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:03:49,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:03:49,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-28 13:03:49,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:49,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:49,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:49,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:49,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:49,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:49,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:03:49,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:49,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:49,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:49,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:49,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:49,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:50,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:03:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:50,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:50,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:50,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:03:50,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:50,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 13:03:50,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:50,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:50,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:50,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:50,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:03:50,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:50,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:03:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:50,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:50,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:50,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:50,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:03:50,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:03:50,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 704 [2020-10-28 13:03:50,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:50,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:50,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:50,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:03:50,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:03:50,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:51,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-28 13:03:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:51,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:51,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:51,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:03:51,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:51,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 13:03:51,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:51,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:03:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:03:51,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:51,629 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 284 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 13:03:51,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704548333] [2020-10-28 13:03:51,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:03:51,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:03:51,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75588537] [2020-10-28 13:03:51,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:03:51,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:51,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:03:51,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:03:51,633 INFO L87 Difference]: Start difference. First operand 3260 states and 3970 transitions. Second operand 8 states. [2020-10-28 13:04:06,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:04:06,616 INFO L93 Difference]: Finished difference Result 8837 states and 11252 transitions. [2020-10-28 13:04:06,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 13:04:06,617 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 397 [2020-10-28 13:04:06,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:04:06,646 INFO L225 Difference]: With dead ends: 8837 [2020-10-28 13:04:06,646 INFO L226 Difference]: Without dead ends: 5250 [2020-10-28 13:04:06,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-28 13:04:06,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5250 states. [2020-10-28 13:04:06,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5250 to 4553. [2020-10-28 13:04:06,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4553 states. [2020-10-28 13:04:06,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4553 states to 4553 states and 5270 transitions. [2020-10-28 13:04:06,810 INFO L78 Accepts]: Start accepts. Automaton has 4553 states and 5270 transitions. Word has length 397 [2020-10-28 13:04:06,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:04:06,811 INFO L481 AbstractCegarLoop]: Abstraction has 4553 states and 5270 transitions. [2020-10-28 13:04:06,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:04:06,811 INFO L276 IsEmpty]: Start isEmpty. Operand 4553 states and 5270 transitions. [2020-10-28 13:04:06,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-10-28 13:04:06,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:04:06,819 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:04:06,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:04:06,819 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:04:06,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:04:06,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1475423752, now seen corresponding path program 1 times [2020-10-28 13:04:06,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:04:06,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690940315] [2020-10-28 13:04:06,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:04:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:07,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:07,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:09,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:09,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-10-28 13:04:09,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:04:09,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2638 [2020-10-28 13:04:09,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:09,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:09,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:09,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:04:09,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:04:09,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:09,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:04:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:09,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:09,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:09,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:04:09,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:09,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:04:09,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:09,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:09,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:09,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:09,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:09,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:09,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:04:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:09,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:10,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:10,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:04:10,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:10,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-28 13:04:10,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:10,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:10,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:04:10,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:10,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:04:10,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:10,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:04:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:10,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:10,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:10,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:04:10,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:10,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-28 13:04:10,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:10,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:10,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:10,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:04:10,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:04:10,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:10,961 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:04:10,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690940315] [2020-10-28 13:04:10,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:04:10,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:04:10,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862230486] [2020-10-28 13:04:10,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:04:10,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:04:10,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:04:10,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:04:10,964 INFO L87 Difference]: Start difference. First operand 4553 states and 5270 transitions. Second operand 8 states. [2020-10-28 13:04:20,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:04:20,434 INFO L93 Difference]: Finished difference Result 10452 states and 12097 transitions. [2020-10-28 13:04:20,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:04:20,436 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 407 [2020-10-28 13:04:20,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:04:20,464 INFO L225 Difference]: With dead ends: 10452 [2020-10-28 13:04:20,465 INFO L226 Difference]: Without dead ends: 6212 [2020-10-28 13:04:20,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:04:20,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6212 states. [2020-10-28 13:04:20,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6212 to 5827. [2020-10-28 13:04:20,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5827 states. [2020-10-28 13:04:20,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5827 states to 5827 states and 6658 transitions. [2020-10-28 13:04:20,667 INFO L78 Accepts]: Start accepts. Automaton has 5827 states and 6658 transitions. Word has length 407 [2020-10-28 13:04:20,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:04:20,668 INFO L481 AbstractCegarLoop]: Abstraction has 5827 states and 6658 transitions. [2020-10-28 13:04:20,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:04:20,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5827 states and 6658 transitions. [2020-10-28 13:04:20,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-10-28 13:04:20,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:04:20,679 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:04:20,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:04:20,679 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:04:20,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:04:20,680 INFO L82 PathProgramCache]: Analyzing trace with hash -560815744, now seen corresponding path program 1 times [2020-10-28 13:04:20,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:04:20,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795946706] [2020-10-28 13:04:20,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:04:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:20,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:21,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:21,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-28 13:04:21,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:21,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 806 [2020-10-28 13:04:21,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:21,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:21,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:21,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:04:21,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 13:04:21,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:21,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:04:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:21,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:21,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:21,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:04:21,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:21,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:04:21,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:21,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:21,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:21,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:21,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:21,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:21,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:04:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:21,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:21,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:21,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:04:21,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:21,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-28 13:04:21,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:21,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:21,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:21,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:21,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:21,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:22,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:04:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:22,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:22,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:22,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:04:22,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:22,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 13:04:22,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:22,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:22,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:04:22,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:22,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:04:22,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:22,410 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-28 13:04:22,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795946706] [2020-10-28 13:04:22,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:04:22,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:04:22,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630025948] [2020-10-28 13:04:22,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:04:22,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:04:22,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:04:22,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:04:22,413 INFO L87 Difference]: Start difference. First operand 5827 states and 6658 transitions. Second operand 5 states. [2020-10-28 13:04:33,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:04:33,115 INFO L93 Difference]: Finished difference Result 13317 states and 15599 transitions. [2020-10-28 13:04:33,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:04:33,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 419 [2020-10-28 13:04:33,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:04:33,230 INFO L225 Difference]: With dead ends: 13317 [2020-10-28 13:04:33,230 INFO L226 Difference]: Without dead ends: 7803 [2020-10-28 13:04:33,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:04:33,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7803 states. [2020-10-28 13:04:33,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7803 to 7785. [2020-10-28 13:04:33,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7785 states. [2020-10-28 13:04:33,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7785 states to 7785 states and 9105 transitions. [2020-10-28 13:04:33,436 INFO L78 Accepts]: Start accepts. Automaton has 7785 states and 9105 transitions. Word has length 419 [2020-10-28 13:04:33,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:04:33,437 INFO L481 AbstractCegarLoop]: Abstraction has 7785 states and 9105 transitions. [2020-10-28 13:04:33,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:04:33,437 INFO L276 IsEmpty]: Start isEmpty. Operand 7785 states and 9105 transitions. [2020-10-28 13:04:33,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2020-10-28 13:04:33,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:04:33,451 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:04:33,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:04:33,452 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:04:33,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:04:33,452 INFO L82 PathProgramCache]: Analyzing trace with hash 670885101, now seen corresponding path program 1 times [2020-10-28 13:04:33,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:04:33,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233388474] [2020-10-28 13:04:33,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:04:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:33,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:33,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:36,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:38,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:38,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 511 [2020-10-28 13:04:38,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:04:38,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4477 [2020-10-28 13:04:38,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:38,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:38,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:38,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:04:38,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 13:04:38,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:38,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:04:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:38,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:38,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:38,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:04:38,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:38,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:04:38,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:38,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:38,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:38,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:38,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:38,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:38,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:04:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:38,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:38,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:38,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:04:38,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:38,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 13:04:38,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:38,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:38,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:38,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:38,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:38,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:38,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:04:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:38,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:38,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:38,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:04:38,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:38,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 13:04:38,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:38,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:38,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:04:38,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:38,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:04:38,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:38,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:04:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:38,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:38,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:38,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:04:38,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:38,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 13:04:38,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:38,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:38,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:38,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:04:38,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:04:38,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:39,099 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:04:39,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233388474] [2020-10-28 13:04:39,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:04:39,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:04:39,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360918735] [2020-10-28 13:04:39,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:04:39,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:04:39,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:04:39,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:04:39,102 INFO L87 Difference]: Start difference. First operand 7785 states and 9105 transitions. Second operand 7 states. [2020-10-28 13:04:51,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:04:51,085 INFO L93 Difference]: Finished difference Result 18412 states and 22123 transitions. [2020-10-28 13:04:51,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:04:51,092 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 495 [2020-10-28 13:04:51,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:04:51,131 INFO L225 Difference]: With dead ends: 18412 [2020-10-28 13:04:51,131 INFO L226 Difference]: Without dead ends: 10940 [2020-10-28 13:04:51,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:04:51,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10940 states. [2020-10-28 13:04:51,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10940 to 9656. [2020-10-28 13:04:51,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9656 states. [2020-10-28 13:04:51,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9656 states to 9656 states and 11605 transitions. [2020-10-28 13:04:51,411 INFO L78 Accepts]: Start accepts. Automaton has 9656 states and 11605 transitions. Word has length 495 [2020-10-28 13:04:51,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:04:51,412 INFO L481 AbstractCegarLoop]: Abstraction has 9656 states and 11605 transitions. [2020-10-28 13:04:51,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:04:51,413 INFO L276 IsEmpty]: Start isEmpty. Operand 9656 states and 11605 transitions. [2020-10-28 13:04:51,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-10-28 13:04:51,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:04:51,420 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:04:51,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:04:51,421 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:04:51,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:04:51,421 INFO L82 PathProgramCache]: Analyzing trace with hash 710328961, now seen corresponding path program 1 times [2020-10-28 13:04:51,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:04:51,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493535638] [2020-10-28 13:04:51,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:04:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:51,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:52,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:52,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:55,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:55,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 517 [2020-10-28 13:04:55,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:04:55,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3511 [2020-10-28 13:04:55,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:55,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:55,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:55,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:04:55,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 13:04:55,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:55,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:04:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:55,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:55,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:55,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:04:55,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:55,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:04:55,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:55,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:55,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:55,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:55,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:55,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:55,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:04:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:55,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:55,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:55,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:04:55,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:55,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 13:04:55,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:55,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:55,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:55,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:55,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:55,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:55,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:04:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:55,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:55,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:55,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:04:55,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:55,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 13:04:55,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:55,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:55,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:04:55,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:55,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:04:55,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:55,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:04:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:55,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:55,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:55,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 13:04:55,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:55,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 13:04:55,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:55,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:55,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:55,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:04:55,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:04:55,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:56,020 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:04:56,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493535638] [2020-10-28 13:04:56,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:04:56,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:04:56,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992666063] [2020-10-28 13:04:56,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:04:56,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:04:56,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:04:56,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:04:56,023 INFO L87 Difference]: Start difference. First operand 9656 states and 11605 transitions. Second operand 7 states. [2020-10-28 13:04:58,467 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:05:06,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:05:06,879 INFO L93 Difference]: Finished difference Result 19084 states and 23098 transitions. [2020-10-28 13:05:06,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:05:06,881 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 501 [2020-10-28 13:05:06,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:05:06,916 INFO L225 Difference]: With dead ends: 19084 [2020-10-28 13:05:06,916 INFO L226 Difference]: Without dead ends: 9741 [2020-10-28 13:05:06,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:05:06,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9741 states. [2020-10-28 13:05:07,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9741 to 9677. [2020-10-28 13:05:07,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9677 states. [2020-10-28 13:05:07,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9677 states to 9677 states and 11209 transitions. [2020-10-28 13:05:07,208 INFO L78 Accepts]: Start accepts. Automaton has 9677 states and 11209 transitions. Word has length 501 [2020-10-28 13:05:07,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:05:07,209 INFO L481 AbstractCegarLoop]: Abstraction has 9677 states and 11209 transitions. [2020-10-28 13:05:07,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:05:07,209 INFO L276 IsEmpty]: Start isEmpty. Operand 9677 states and 11209 transitions. [2020-10-28 13:05:07,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2020-10-28 13:05:07,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:05:07,217 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:05:07,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:05:07,218 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:05:07,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:05:07,218 INFO L82 PathProgramCache]: Analyzing trace with hash -17274878, now seen corresponding path program 1 times [2020-10-28 13:05:07,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:05:07,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265867980] [2020-10-28 13:05:07,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:05:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:07,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:08,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:08,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:09,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:09,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 529 [2020-10-28 13:05:09,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:05:09,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2345 [2020-10-28 13:05:09,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:09,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:09,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:09,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:05:09,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 13:05:09,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:09,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:05:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:09,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:09,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:09,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:05:09,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:09,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:05:09,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:09,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:09,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:09,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:09,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:09,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:09,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:05:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:09,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:09,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:09,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:05:09,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:09,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 13:05:09,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:09,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:09,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:09,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:09,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:09,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:10,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:05:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:10,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:10,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:10,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:05:10,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:10,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 13:05:10,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:10,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:10,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:05:10,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:10,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:05:10,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:10,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:05:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:10,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:10,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:10,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 13:05:10,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:10,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 13:05:10,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:10,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:10,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:10,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:05:10,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:05:10,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:05:10,702 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 229 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:05:10,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265867980] [2020-10-28 13:05:10,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:05:10,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:05:10,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116726243] [2020-10-28 13:05:10,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:05:10,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:05:10,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:05:10,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:05:10,717 INFO L87 Difference]: Start difference. First operand 9677 states and 11209 transitions. Second operand 8 states. [2020-10-28 13:05:26,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:05:26,823 INFO L93 Difference]: Finished difference Result 25345 states and 30438 transitions. [2020-10-28 13:05:26,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 13:05:26,826 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 513 [2020-10-28 13:05:26,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:05:26,881 INFO L225 Difference]: With dead ends: 25345 [2020-10-28 13:05:26,881 INFO L226 Difference]: Without dead ends: 15331 [2020-10-28 13:05:26,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 13:05:26,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15331 states. [2020-10-28 13:05:27,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15331 to 14697. [2020-10-28 13:05:27,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14697 states. [2020-10-28 13:05:27,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14697 states to 14697 states and 17202 transitions. [2020-10-28 13:05:27,288 INFO L78 Accepts]: Start accepts. Automaton has 14697 states and 17202 transitions. Word has length 513 [2020-10-28 13:05:27,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:05:27,289 INFO L481 AbstractCegarLoop]: Abstraction has 14697 states and 17202 transitions. [2020-10-28 13:05:27,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:05:27,290 INFO L276 IsEmpty]: Start isEmpty. Operand 14697 states and 17202 transitions. [2020-10-28 13:05:27,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2020-10-28 13:05:27,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:05:27,302 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:05:27,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:05:27,302 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:05:27,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:05:27,303 INFO L82 PathProgramCache]: Analyzing trace with hash 153833381, now seen corresponding path program 1 times [2020-10-28 13:05:27,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:05:27,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613678378] [2020-10-28 13:05:27,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:05:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:27,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:27,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:31,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:31,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 597 [2020-10-28 13:05:31,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:05:31,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3977 [2020-10-28 13:05:31,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:31,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:31,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:31,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-28 13:05:31,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:05:31,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:31,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:05:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:31,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:31,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:31,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:05:31,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:31,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:05:31,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:31,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:31,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:31,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:31,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:31,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:31,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:05:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:31,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:31,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:31,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:05:31,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:31,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 13:05:31,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:31,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:31,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:31,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:31,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:31,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:32,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:05:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:32,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:32,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:32,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 13:05:32,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:32,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 13:05:32,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:32,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:32,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:05:32,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:32,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-28 13:05:32,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:32,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-28 13:05:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:32,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:32,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:32,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:05:32,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:32,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 13:05:32,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:32,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:32,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:32,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:05:32,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:05:32,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:32,682 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-28 13:05:32,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613678378] [2020-10-28 13:05:32,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:05:32,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:05:32,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283060328] [2020-10-28 13:05:32,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:05:32,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:05:32,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:05:32,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:05:32,689 INFO L87 Difference]: Start difference. First operand 14697 states and 17202 transitions. Second operand 7 states. [2020-10-28 13:05:36,347 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:05:43,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:05:43,714 INFO L93 Difference]: Finished difference Result 31901 states and 37829 transitions. [2020-10-28 13:05:43,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:05:43,717 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 581 [2020-10-28 13:05:43,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:05:43,772 INFO L225 Difference]: With dead ends: 31901 [2020-10-28 13:05:43,772 INFO L226 Difference]: Without dead ends: 17208 [2020-10-28 13:05:43,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:05:43,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17208 states. [2020-10-28 13:05:44,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17208 to 16879. [2020-10-28 13:05:44,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16879 states. [2020-10-28 13:05:44,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16879 states to 16879 states and 19601 transitions. [2020-10-28 13:05:44,228 INFO L78 Accepts]: Start accepts. Automaton has 16879 states and 19601 transitions. Word has length 581 [2020-10-28 13:05:44,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:05:44,229 INFO L481 AbstractCegarLoop]: Abstraction has 16879 states and 19601 transitions. [2020-10-28 13:05:44,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:05:44,229 INFO L276 IsEmpty]: Start isEmpty. Operand 16879 states and 19601 transitions. [2020-10-28 13:05:44,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2020-10-28 13:05:44,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:05:44,244 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:05:44,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:05:44,245 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:05:44,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:05:44,246 INFO L82 PathProgramCache]: Analyzing trace with hash 904778370, now seen corresponding path program 1 times [2020-10-28 13:05:44,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:05:44,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578120554] [2020-10-28 13:05:44,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:05:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:44,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:44,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:45,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:48,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:49,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:49,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 682 [2020-10-28 13:05:49,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:05:49,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 13:05:49,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:49,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:49,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:05:49,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:05:49,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:05:49,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:49,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:05:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:49,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:49,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:49,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:05:49,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:49,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:05:49,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:49,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:49,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:49,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:49,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:49,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:49,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:05:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:49,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:49,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:49,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:05:49,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:49,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:05:49,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:49,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:49,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:49,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:49,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:49,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:49,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:05:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:49,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:50,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:50,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:05:50,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:50,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 13:05:50,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:50,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:50,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:05:50,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:50,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:05:50,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:50,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:05:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:50,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:50,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:50,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 13:05:50,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:50,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-28 13:05:50,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:50,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:50,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:50,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:05:50,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:05:50,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:50,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2020-10-28 13:05:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:50,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:50,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:50,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:05:50,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:50,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-28 13:05:50,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:50,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:50,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:50,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:05:50,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:05:50,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:51,103 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 487 proven. 6 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-28 13:05:51,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578120554] [2020-10-28 13:05:51,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:05:51,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:05:51,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151239116] [2020-10-28 13:05:51,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:05:51,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:05:51,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:05:51,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:05:51,106 INFO L87 Difference]: Start difference. First operand 16879 states and 19601 transitions. Second operand 7 states. [2020-10-28 13:05:53,771 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:05:55,003 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:06:04,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:06:04,008 INFO L93 Difference]: Finished difference Result 42456 states and 49898 transitions. [2020-10-28 13:06:04,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:06:04,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 664 [2020-10-28 13:06:04,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:06:04,101 INFO L225 Difference]: With dead ends: 42456 [2020-10-28 13:06:04,101 INFO L226 Difference]: Without dead ends: 24012 [2020-10-28 13:06:04,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:06:04,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24012 states. [2020-10-28 13:06:04,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24012 to 22471. [2020-10-28 13:06:04,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22471 states. [2020-10-28 13:06:04,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22471 states to 22471 states and 25693 transitions. [2020-10-28 13:06:04,670 INFO L78 Accepts]: Start accepts. Automaton has 22471 states and 25693 transitions. Word has length 664 [2020-10-28 13:06:04,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:06:04,671 INFO L481 AbstractCegarLoop]: Abstraction has 22471 states and 25693 transitions. [2020-10-28 13:06:04,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:06:04,672 INFO L276 IsEmpty]: Start isEmpty. Operand 22471 states and 25693 transitions. [2020-10-28 13:06:04,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2020-10-28 13:06:04,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:06:04,686 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:06:04,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:06:04,686 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:06:04,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:06:04,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1592825007, now seen corresponding path program 1 times [2020-10-28 13:06:04,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:06:04,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903245867] [2020-10-28 13:06:04,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:06:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:05,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:05,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:08,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:08,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 683 [2020-10-28 13:06:08,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:06:08,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3344 [2020-10-28 13:06:08,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:08,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:08,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:06:08,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 576 [2020-10-28 13:06:08,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 13:06:08,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:08,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:06:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:08,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:08,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:08,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:06:08,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:08,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:06:08,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:08,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:08,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:08,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:08,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:08,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:08,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:06:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:08,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:08,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:08,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:06:08,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:08,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 13:06:08,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:08,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:08,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:08,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:08,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:08,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:08,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:06:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:08,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:09,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:09,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-28 13:06:09,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:09,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-28 13:06:09,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:09,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:09,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:06:09,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:09,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 273 [2020-10-28 13:06:09,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:09,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-28 13:06:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:09,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:09,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:09,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:06:09,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:09,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 13:06:09,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:09,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:09,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:06:09,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:06:09,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:06:09,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:09,658 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-10-28 13:06:09,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903245867] [2020-10-28 13:06:09,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:06:09,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:06:09,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214882172] [2020-10-28 13:06:09,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:06:09,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:06:09,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:06:09,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:06:09,661 INFO L87 Difference]: Start difference. First operand 22471 states and 25693 transitions. Second operand 7 states. [2020-10-28 13:06:13,318 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 13:06:15,115 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:06:23,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:06:23,984 INFO L93 Difference]: Finished difference Result 52691 states and 60511 transitions. [2020-10-28 13:06:23,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:06:23,989 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 667 [2020-10-28 13:06:23,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:06:24,084 INFO L225 Difference]: With dead ends: 52691 [2020-10-28 13:06:24,085 INFO L226 Difference]: Without dead ends: 30533 [2020-10-28 13:06:24,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:06:24,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30533 states.