/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:45:46,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:45:46,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:45:47,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:45:47,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:45:47,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:45:47,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:45:47,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:45:47,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:45:47,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:45:47,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:45:47,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:45:47,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:45:47,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:45:47,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:45:47,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:45:47,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:45:47,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:45:47,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:45:47,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:45:47,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:45:47,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:45:47,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:45:47,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:45:47,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:45:47,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:45:47,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:45:47,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:45:47,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:45:47,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:45:47,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:45:47,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:45:47,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:45:47,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:45:47,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:45:47,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:45:47,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:45:47,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:45:47,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:45:47,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:45:47,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:45:47,104 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:45:47,170 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:45:47,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:45:47,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:45:47,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:45:47,177 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:45:47,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:45:47,178 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:45:47,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:45:47,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:45:47,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:45:47,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:45:47,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:45:47,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:45:47,180 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:45:47,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:45:47,181 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:45:47,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:45:47,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:45:47,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:45:47,182 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:45:47,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:45:47,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:45:47,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:45:47,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:45:47,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:45:47,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:45:47,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:45:47,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:45:47,184 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:45:47,184 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:45:47,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:45:47,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:45:47,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:45:47,714 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:45:47,714 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:45:47,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label27.c [2020-10-29 07:45:47,823 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70bff6e69/5f4511943bec46899a5bc6b62e41780a/FLAG0c390d92d [2020-10-29 07:45:48,811 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:45:48,812 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label27.c [2020-10-29 07:45:48,840 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70bff6e69/5f4511943bec46899a5bc6b62e41780a/FLAG0c390d92d [2020-10-29 07:45:49,354 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70bff6e69/5f4511943bec46899a5bc6b62e41780a [2020-10-29 07:45:49,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:45:49,364 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:45:49,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:45:49,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:45:49,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:45:49,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:45:49" (1/1) ... [2020-10-29 07:45:49,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@447682be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:49, skipping insertion in model container [2020-10-29 07:45:49,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:45:49" (1/1) ... [2020-10-29 07:45:49,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:45:49,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:45:50,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:45:50,439 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:45:50,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:45:50,774 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:45:50,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:50 WrapperNode [2020-10-29 07:45:50,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:45:50,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:45:50,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:45:50,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:45:50,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:50" (1/1) ... [2020-10-29 07:45:50,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:50" (1/1) ... [2020-10-29 07:45:50,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:50" (1/1) ... [2020-10-29 07:45:50,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:50" (1/1) ... [2020-10-29 07:45:50,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:50" (1/1) ... [2020-10-29 07:45:50,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:50" (1/1) ... [2020-10-29 07:45:51,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:50" (1/1) ... [2020-10-29 07:45:51,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:45:51,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:45:51,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:45:51,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:45:51,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:45:51,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:45:51,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:45:51,183 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:45:51,183 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:45:51,184 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:45:51,185 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:45:51,185 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:45:51,186 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:45:51,186 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:45:51,187 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:45:51,188 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:45:51,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:45:51,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:45:51,189 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:45:51,190 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:45:51,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:45:51,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:45:51,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:45:51,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:45:51,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:45:51,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:45:55,330 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:45:55,331 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:45:55,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:45:55 BoogieIcfgContainer [2020-10-29 07:45:55,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:45:55,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:45:55,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:45:55,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:45:55,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:45:49" (1/3) ... [2020-10-29 07:45:55,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3683df80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:45:55, skipping insertion in model container [2020-10-29 07:45:55,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:50" (2/3) ... [2020-10-29 07:45:55,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3683df80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:45:55, skipping insertion in model container [2020-10-29 07:45:55,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:45:55" (3/3) ... [2020-10-29 07:45:55,350 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label27.c [2020-10-29 07:45:55,369 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:45:55,377 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:45:55,397 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:45:55,444 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:45:55,445 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:45:55,445 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:45:55,445 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:45:55,445 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:45:55,445 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:45:55,446 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:45:55,446 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:45:55,485 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:45:55,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 07:45:55,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:55,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:45:55,500 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:55,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:55,510 INFO L82 PathProgramCache]: Analyzing trace with hash -133206751, now seen corresponding path program 1 times [2020-10-29 07:45:55,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:55,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497925451] [2020-10-29 07:45:55,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:55,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:56,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:56,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 07:45:56,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:56,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 778 [2020-10-29 07:45:56,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:56,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:56,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:45:56,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:45:56,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 07:45:56,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:45:56,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:56,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:56,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:56,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:56,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:56,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 07:45:56,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:56,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:56,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:56,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:56,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:45:56,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:45:56,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:45:56,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497925451] [2020-10-29 07:45:56,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:45:56,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:45:56,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010219168] [2020-10-29 07:45:56,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:45:56,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:56,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:45:56,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:45:56,935 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-29 07:46:03,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:03,898 INFO L93 Difference]: Finished difference Result 1204 states and 2170 transitions. [2020-10-29 07:46:03,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:46:03,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-29 07:46:03,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:03,922 INFO L225 Difference]: With dead ends: 1204 [2020-10-29 07:46:03,922 INFO L226 Difference]: Without dead ends: 698 [2020-10-29 07:46:03,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:46:03,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-29 07:46:04,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 692. [2020-10-29 07:46:04,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-29 07:46:04,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1013 transitions. [2020-10-29 07:46:04,055 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1013 transitions. Word has length 44 [2020-10-29 07:46:04,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:04,055 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1013 transitions. [2020-10-29 07:46:04,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:46:04,056 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1013 transitions. [2020-10-29 07:46:04,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-29 07:46:04,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:04,065 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:46:04,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:46:04,066 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:04,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:04,067 INFO L82 PathProgramCache]: Analyzing trace with hash 371660182, now seen corresponding path program 1 times [2020-10-29 07:46:04,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:04,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701803406] [2020-10-29 07:46:04,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:04,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:04,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:06,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:06,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 07:46:06,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:46:06,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2277 [2020-10-29 07:46:06,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:06,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:06,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:46:06,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:46:06,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:46:06,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:46:06,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:06,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:06,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:06,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:06,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:06,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:46:06,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:06,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:06,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:06,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:06,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:46:06,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:46:06,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:06,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:06,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:06,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:46:06,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:06,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-29 07:46:06,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:06,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:06,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:06,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:06,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:46:06,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:46:06,999 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:46:07,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701803406] [2020-10-29 07:46:07,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:46:07,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:46:07,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613780370] [2020-10-29 07:46:07,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:46:07,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:07,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:46:07,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:46:07,010 INFO L87 Difference]: Start difference. First operand 692 states and 1013 transitions. Second operand 7 states. [2020-10-29 07:46:14,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:14,565 INFO L93 Difference]: Finished difference Result 1712 states and 2419 transitions. [2020-10-29 07:46:14,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:46:14,572 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2020-10-29 07:46:14,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:14,582 INFO L225 Difference]: With dead ends: 1712 [2020-10-29 07:46:14,582 INFO L226 Difference]: Without dead ends: 1026 [2020-10-29 07:46:14,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:46:14,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-10-29 07:46:14,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1015. [2020-10-29 07:46:14,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-10-29 07:46:14,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1368 transitions. [2020-10-29 07:46:14,693 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1368 transitions. Word has length 113 [2020-10-29 07:46:14,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:14,695 INFO L481 AbstractCegarLoop]: Abstraction has 1015 states and 1368 transitions. [2020-10-29 07:46:14,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:46:14,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1368 transitions. [2020-10-29 07:46:14,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 07:46:14,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:14,710 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:46:14,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:46:14,711 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:14,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:14,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1994513902, now seen corresponding path program 1 times [2020-10-29 07:46:14,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:14,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490076081] [2020-10-29 07:46:14,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:14,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:15,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:15,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:16,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:16,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:46:16,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:46:16,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1236 [2020-10-29 07:46:16,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:16,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:16,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:46:16,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:46:16,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:46:16,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:46:16,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:16,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:16,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:16,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:16,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:16,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:46:16,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:16,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:16,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:16,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:16,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:46:16,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:16,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:16,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:16,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:16,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:46:16,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:16,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-29 07:46:16,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:16,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:16,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:16,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:16,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:46:16,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:16,505 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:46:16,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490076081] [2020-10-29 07:46:16,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:46:16,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:46:16,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146740550] [2020-10-29 07:46:16,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:46:16,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:16,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:46:16,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:46:16,512 INFO L87 Difference]: Start difference. First operand 1015 states and 1368 transitions. Second operand 7 states. [2020-10-29 07:46:27,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:27,011 INFO L93 Difference]: Finished difference Result 2394 states and 3405 transitions. [2020-10-29 07:46:27,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:46:27,018 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-29 07:46:27,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:27,030 INFO L225 Difference]: With dead ends: 2394 [2020-10-29 07:46:27,031 INFO L226 Difference]: Without dead ends: 1692 [2020-10-29 07:46:27,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:46:27,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2020-10-29 07:46:27,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1347. [2020-10-29 07:46:27,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1347 states. [2020-10-29 07:46:27,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 1744 transitions. [2020-10-29 07:46:27,102 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 1744 transitions. Word has length 118 [2020-10-29 07:46:27,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:27,103 INFO L481 AbstractCegarLoop]: Abstraction has 1347 states and 1744 transitions. [2020-10-29 07:46:27,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:46:27,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 1744 transitions. [2020-10-29 07:46:27,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-29 07:46:27,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:27,107 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:46:27,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:46:27,108 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:27,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:27,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1487313752, now seen corresponding path program 1 times [2020-10-29 07:46:27,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:27,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701750437] [2020-10-29 07:46:27,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:27,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:27,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:28,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:28,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:28,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:30,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:32,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:32,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-29 07:46:32,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:46:32,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 07:46:32,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:32,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:32,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:46:32,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:46:32,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:46:32,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:46:32,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:32,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:32,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:32,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:32,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:32,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:46:32,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:32,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:32,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:32,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:32,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:46:32,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:46:32,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:32,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:32,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:32,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:46:32,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:32,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-29 07:46:32,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:32,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:32,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:32,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:32,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:46:32,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 07:46:32,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:46:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:32,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:32,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:32,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:46:32,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:32,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-29 07:46:32,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:32,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:32,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:32,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:32,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:46:32,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:46:33,107 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-29 07:46:33,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701750437] [2020-10-29 07:46:33,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:46:33,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:46:33,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990585795] [2020-10-29 07:46:33,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:46:33,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:33,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:46:33,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:46:33,112 INFO L87 Difference]: Start difference. First operand 1347 states and 1744 transitions. Second operand 7 states. [2020-10-29 07:46:43,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:43,620 INFO L93 Difference]: Finished difference Result 4013 states and 5211 transitions. [2020-10-29 07:46:43,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:46:43,621 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 218 [2020-10-29 07:46:43,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:43,636 INFO L225 Difference]: With dead ends: 4013 [2020-10-29 07:46:43,637 INFO L226 Difference]: Without dead ends: 2672 [2020-10-29 07:46:43,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:46:43,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2020-10-29 07:46:43,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 2585. [2020-10-29 07:46:43,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2585 states. [2020-10-29 07:46:43,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2585 states to 2585 states and 3126 transitions. [2020-10-29 07:46:43,730 INFO L78 Accepts]: Start accepts. Automaton has 2585 states and 3126 transitions. Word has length 218 [2020-10-29 07:46:43,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:43,731 INFO L481 AbstractCegarLoop]: Abstraction has 2585 states and 3126 transitions. [2020-10-29 07:46:43,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:46:43,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2585 states and 3126 transitions. [2020-10-29 07:46:43,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-29 07:46:43,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:43,740 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:46:43,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:46:43,741 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:43,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:43,741 INFO L82 PathProgramCache]: Analyzing trace with hash 175275356, now seen corresponding path program 1 times [2020-10-29 07:46:43,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:43,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937644136] [2020-10-29 07:46:43,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:43,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:44,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:44,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:48,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:48,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-29 07:46:48,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:46:48,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-29 07:46:48,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:48,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:48,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:46:48,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:46:48,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:46:48,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:46:49,168 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:46:49,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:49,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:49,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:49,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:49,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:49,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:49,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 07:46:49,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:49,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:49,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:49,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:49,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:46:49,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:49,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:49,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:49,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:49,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:46:49,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:49,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-29 07:46:49,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:49,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:49,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:49,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:46:49,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:46:50,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 07:46:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:50,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:50,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:50,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:46:50,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:50,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 07:46:50,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:50,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:50,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:50,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:46:50,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:50,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:46:50,529 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 72 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:46:50,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937644136] [2020-10-29 07:46:50,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:46:50,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:46:50,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199539027] [2020-10-29 07:46:50,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:46:50,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:50,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:46:50,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:46:50,533 INFO L87 Difference]: Start difference. First operand 2585 states and 3126 transitions. Second operand 7 states. [2020-10-29 07:47:02,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:02,786 INFO L93 Difference]: Finished difference Result 4930 states and 6017 transitions. [2020-10-29 07:47:02,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:47:02,789 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 324 [2020-10-29 07:47:02,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:02,804 INFO L225 Difference]: With dead ends: 4930 [2020-10-29 07:47:02,805 INFO L226 Difference]: Without dead ends: 2658 [2020-10-29 07:47:02,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:47:02,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2658 states. [2020-10-29 07:47:02,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2658 to 2587. [2020-10-29 07:47:02,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2587 states. [2020-10-29 07:47:02,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2587 states to 2587 states and 3124 transitions. [2020-10-29 07:47:02,902 INFO L78 Accepts]: Start accepts. Automaton has 2587 states and 3124 transitions. Word has length 324 [2020-10-29 07:47:02,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:02,903 INFO L481 AbstractCegarLoop]: Abstraction has 2587 states and 3124 transitions. [2020-10-29 07:47:02,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:47:02,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2587 states and 3124 transitions. [2020-10-29 07:47:02,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-29 07:47:02,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:02,911 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:47:02,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:47:02,912 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:02,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:02,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1234346390, now seen corresponding path program 1 times [2020-10-29 07:47:02,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:02,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894769494] [2020-10-29 07:47:02,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:03,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:03,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:03,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:04,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:05,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:08,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:08,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-29 07:47:08,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:47:08,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 07:47:08,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:08,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:08,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:47:08,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:47:08,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-29 07:47:08,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:08,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:47:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:08,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:08,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:08,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:47:08,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:08,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:47:08,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:08,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:08,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:08,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:08,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:08,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:08,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:47:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:08,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:08,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:08,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:47:08,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:08,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 07:47:08,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:08,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:08,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:47:08,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:08,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:47:08,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:47:08,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:47:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:08,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:08,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:09,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:09,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:47:09,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:47:09,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-10-29 07:47:09,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:09,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:09,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:09,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:47:09,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:47:09,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:09,424 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 126 proven. 36 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:47:09,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894769494] [2020-10-29 07:47:09,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:47:09,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:47:09,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780934663] [2020-10-29 07:47:09,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:47:09,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:47:09,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:47:09,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:47:09,428 INFO L87 Difference]: Start difference. First operand 2587 states and 3124 transitions. Second operand 6 states. [2020-10-29 07:47:23,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:23,641 INFO L93 Difference]: Finished difference Result 5543 states and 6907 transitions. [2020-10-29 07:47:23,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:47:23,643 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 339 [2020-10-29 07:47:23,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:23,662 INFO L225 Difference]: With dead ends: 5543 [2020-10-29 07:47:23,663 INFO L226 Difference]: Without dead ends: 3264 [2020-10-29 07:47:23,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:47:23,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3264 states. [2020-10-29 07:47:23,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3264 to 3249. [2020-10-29 07:47:23,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3249 states. [2020-10-29 07:47:23,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3249 states to 3249 states and 3825 transitions. [2020-10-29 07:47:23,768 INFO L78 Accepts]: Start accepts. Automaton has 3249 states and 3825 transitions. Word has length 339 [2020-10-29 07:47:23,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:23,768 INFO L481 AbstractCegarLoop]: Abstraction has 3249 states and 3825 transitions. [2020-10-29 07:47:23,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:47:23,769 INFO L276 IsEmpty]: Start isEmpty. Operand 3249 states and 3825 transitions. [2020-10-29 07:47:23,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2020-10-29 07:47:23,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:23,777 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:47:23,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:47:23,778 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:23,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:23,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1586026274, now seen corresponding path program 1 times [2020-10-29 07:47:23,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:23,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689277365] [2020-10-29 07:47:23,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:23,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:24,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:26,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:26,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 417 [2020-10-29 07:47:26,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:47:26,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2340 [2020-10-29 07:47:26,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:26,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:26,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:26,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:47:26,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:47:26,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:26,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:47:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:26,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:26,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:26,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:47:26,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:26,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:47:26,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:26,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:26,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:26,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:26,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:26,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:47:26,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:47:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:26,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:26,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:26,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:47:26,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:26,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-29 07:47:26,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:26,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:26,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:47:26,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:26,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:47:26,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:26,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:47:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:27,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:27,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:27,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:47:27,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:27,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 07:47:27,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:27,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:27,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:27,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:47:27,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:47:27,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:47:27,441 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:47:27,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689277365] [2020-10-29 07:47:27,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:47:27,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:47:27,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960186203] [2020-10-29 07:47:27,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:47:27,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:47:27,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:47:27,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:47:27,446 INFO L87 Difference]: Start difference. First operand 3249 states and 3825 transitions. Second operand 7 states. [2020-10-29 07:47:39,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:39,330 INFO L93 Difference]: Finished difference Result 7849 states and 9573 transitions. [2020-10-29 07:47:39,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:47:39,331 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 403 [2020-10-29 07:47:39,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:39,361 INFO L225 Difference]: With dead ends: 7849 [2020-10-29 07:47:39,361 INFO L226 Difference]: Without dead ends: 4913 [2020-10-29 07:47:39,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:47:39,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4913 states. [2020-10-29 07:47:39,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4913 to 4848. [2020-10-29 07:47:39,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4848 states. [2020-10-29 07:47:39,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4848 states to 4848 states and 5665 transitions. [2020-10-29 07:47:39,553 INFO L78 Accepts]: Start accepts. Automaton has 4848 states and 5665 transitions. Word has length 403 [2020-10-29 07:47:39,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:39,554 INFO L481 AbstractCegarLoop]: Abstraction has 4848 states and 5665 transitions. [2020-10-29 07:47:39,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:47:39,554 INFO L276 IsEmpty]: Start isEmpty. Operand 4848 states and 5665 transitions. [2020-10-29 07:47:39,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-10-29 07:47:39,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:39,565 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:47:39,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:47:39,566 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:39,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:39,566 INFO L82 PathProgramCache]: Analyzing trace with hash 56662432, now seen corresponding path program 1 times [2020-10-29 07:47:39,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:39,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083786473] [2020-10-29 07:47:39,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:39,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:39,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:42,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:42,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 443 [2020-10-29 07:47:42,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:47:42,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2776 [2020-10-29 07:47:42,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:42,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:42,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:42,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:47:42,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:47:42,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:42,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:47:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:42,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:42,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:42,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:47:42,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:42,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:47:42,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:42,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:42,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:42,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:42,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:42,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:42,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:47:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:42,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:43,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:43,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:47:43,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:43,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-29 07:47:43,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:43,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:43,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:47:43,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:43,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:47:43,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:43,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:47:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:43,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:43,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:43,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:47:43,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:43,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-29 07:47:43,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:43,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:47:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:47:43,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:47:43,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083786473] [2020-10-29 07:47:43,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:47:43,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:47:43,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540147654] [2020-10-29 07:47:43,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:47:43,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:47:43,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:47:43,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:47:43,793 INFO L87 Difference]: Start difference. First operand 4848 states and 5665 transitions. Second operand 7 states. [2020-10-29 07:47:56,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:56,902 INFO L93 Difference]: Finished difference Result 11684 states and 13725 transitions. [2020-10-29 07:47:56,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:47:56,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 429 [2020-10-29 07:47:56,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:56,945 INFO L225 Difference]: With dead ends: 11684 [2020-10-29 07:47:56,945 INFO L226 Difference]: Without dead ends: 7149 [2020-10-29 07:47:56,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:47:56,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7149 states. [2020-10-29 07:47:57,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7149 to 6757. [2020-10-29 07:47:57,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6757 states. [2020-10-29 07:47:57,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6757 states to 6757 states and 7772 transitions. [2020-10-29 07:47:57,158 INFO L78 Accepts]: Start accepts. Automaton has 6757 states and 7772 transitions. Word has length 429 [2020-10-29 07:47:57,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:57,159 INFO L481 AbstractCegarLoop]: Abstraction has 6757 states and 7772 transitions. [2020-10-29 07:47:57,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:47:57,159 INFO L276 IsEmpty]: Start isEmpty. Operand 6757 states and 7772 transitions. [2020-10-29 07:47:57,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2020-10-29 07:47:57,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:57,171 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:47:57,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:47:57,171 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:57,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:57,172 INFO L82 PathProgramCache]: Analyzing trace with hash 177517336, now seen corresponding path program 1 times [2020-10-29 07:47:57,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:57,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072104575] [2020-10-29 07:47:57,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:57,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:58,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:58,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 455 [2020-10-29 07:47:58,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:58,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 779 [2020-10-29 07:47:58,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:58,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:58,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:58,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:47:58,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 07:47:58,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:47:58,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:47:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:58,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:58,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:58,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:47:58,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:58,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:47:58,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:58,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:58,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:58,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:47:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:58,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:58,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:58,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:47:58,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:58,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-29 07:47:58,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:58,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:58,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:58,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:58,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:58,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:58,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:47:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:58,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:58,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:58,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:47:58,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:58,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 07:47:58,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:58,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:58,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:47:58,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:58,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:47:58,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:59,041 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-29 07:47:59,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072104575] [2020-10-29 07:47:59,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:47:59,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:47:59,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883633033] [2020-10-29 07:47:59,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:47:59,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:47:59,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:47:59,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:47:59,051 INFO L87 Difference]: Start difference. First operand 6757 states and 7772 transitions. Second operand 5 states. [2020-10-29 07:48:08,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:48:08,079 INFO L93 Difference]: Finished difference Result 12994 states and 15638 transitions. [2020-10-29 07:48:08,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:48:08,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 441 [2020-10-29 07:48:08,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:48:08,120 INFO L225 Difference]: With dead ends: 12994 [2020-10-29 07:48:08,120 INFO L226 Difference]: Without dead ends: 8733 [2020-10-29 07:48:08,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:48:08,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8733 states. [2020-10-29 07:48:08,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8733 to 8714. [2020-10-29 07:48:08,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8714 states. [2020-10-29 07:48:08,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8714 states to 8714 states and 10343 transitions. [2020-10-29 07:48:08,354 INFO L78 Accepts]: Start accepts. Automaton has 8714 states and 10343 transitions. Word has length 441 [2020-10-29 07:48:08,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:48:08,355 INFO L481 AbstractCegarLoop]: Abstraction has 8714 states and 10343 transitions. [2020-10-29 07:48:08,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:48:08,355 INFO L276 IsEmpty]: Start isEmpty. Operand 8714 states and 10343 transitions. [2020-10-29 07:48:08,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-10-29 07:48:08,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:08,361 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:48:08,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:48:08,362 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:08,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:08,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1195879965, now seen corresponding path program 1 times [2020-10-29 07:48:08,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:08,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632146403] [2020-10-29 07:48:08,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:08,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:08,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:09,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:09,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:13,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:13,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 495 [2020-10-29 07:48:13,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:48:13,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 07:48:13,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:13,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:13,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:13,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-29 07:48:13,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-29 07:48:13,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:13,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:13,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:13,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:13,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:13,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:13,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:48:13,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:13,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:13,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:48:13,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:13,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:48:13,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:13,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:48:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:13,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:14,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:14,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 07:48:14,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:14,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-29 07:48:14,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:14,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:14,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:14,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:14,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-29 07:48:14,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:14,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-29 07:48:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:14,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:14,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:14,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:48:14,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:14,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-29 07:48:14,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:14,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:14,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:14,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:48:14,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:48:14,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:14,883 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 269 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:48:14,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632146403] [2020-10-29 07:48:14,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:48:14,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:48:14,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167681512] [2020-10-29 07:48:14,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:48:14,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:14,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:48:14,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:48:14,886 INFO L87 Difference]: Start difference. First operand 8714 states and 10343 transitions. Second operand 7 states. [2020-10-29 07:48:26,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:48:26,116 INFO L93 Difference]: Finished difference Result 18140 states and 21665 transitions. [2020-10-29 07:48:26,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:48:26,119 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 481 [2020-10-29 07:48:26,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:48:26,154 INFO L225 Difference]: With dead ends: 18140 [2020-10-29 07:48:26,154 INFO L226 Difference]: Without dead ends: 10054 [2020-10-29 07:48:26,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:48:26,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10054 states. [2020-10-29 07:48:26,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10054 to 9351. [2020-10-29 07:48:26,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9351 states. [2020-10-29 07:48:26,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9351 states to 9351 states and 11022 transitions. [2020-10-29 07:48:26,545 INFO L78 Accepts]: Start accepts. Automaton has 9351 states and 11022 transitions. Word has length 481 [2020-10-29 07:48:26,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:48:26,546 INFO L481 AbstractCegarLoop]: Abstraction has 9351 states and 11022 transitions. [2020-10-29 07:48:26,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:48:26,546 INFO L276 IsEmpty]: Start isEmpty. Operand 9351 states and 11022 transitions. [2020-10-29 07:48:26,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2020-10-29 07:48:26,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:26,556 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 07:48:26,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:48:26,556 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:26,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:26,557 INFO L82 PathProgramCache]: Analyzing trace with hash -332280795, now seen corresponding path program 1 times [2020-10-29 07:48:26,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:26,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333578861] [2020-10-29 07:48:26,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:26,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:27,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:28,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:29,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:29,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 533 [2020-10-29 07:48:29,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:48:29,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2533 [2020-10-29 07:48:29,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:29,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:29,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:29,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:48:29,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 07:48:29,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:29,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:29,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:29,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:29,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:29,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:29,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:48:29,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:29,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:29,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:48:29,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:29,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:48:29,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:48:29,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:48:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:29,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:29,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:29,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:48:29,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:29,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 07:48:29,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:29,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:48:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:48:29,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:29,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:48:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:29,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:29,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:29,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:48:29,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:29,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 07:48:29,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:29,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:29,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:29,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:29,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:48:29,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:29,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:48:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:29,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:29,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:29,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:48:29,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:29,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 07:48:29,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:29,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:29,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:29,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:48:29,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 07:48:29,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:30,113 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 259 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:48:30,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333578861] [2020-10-29 07:48:30,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:48:30,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:48:30,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511775570] [2020-10-29 07:48:30,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:48:30,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:30,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:48:30,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:48:30,116 INFO L87 Difference]: Start difference. First operand 9351 states and 11022 transitions. Second operand 7 states. [2020-10-29 07:48:43,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:48:43,868 INFO L93 Difference]: Finished difference Result 19042 states and 23523 transitions. [2020-10-29 07:48:43,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:48:43,870 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 517 [2020-10-29 07:48:43,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:48:43,922 INFO L225 Difference]: With dead ends: 19042 [2020-10-29 07:48:43,923 INFO L226 Difference]: Without dead ends: 12183 [2020-10-29 07:48:43,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:48:43,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12183 states. [2020-10-29 07:48:44,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12183 to 11531. [2020-10-29 07:48:44,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11531 states. [2020-10-29 07:48:44,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11531 states to 11531 states and 13963 transitions. [2020-10-29 07:48:44,217 INFO L78 Accepts]: Start accepts. Automaton has 11531 states and 13963 transitions. Word has length 517 [2020-10-29 07:48:44,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:48:44,218 INFO L481 AbstractCegarLoop]: Abstraction has 11531 states and 13963 transitions. [2020-10-29 07:48:44,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:48:44,219 INFO L276 IsEmpty]: Start isEmpty. Operand 11531 states and 13963 transitions. [2020-10-29 07:48:44,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-10-29 07:48:44,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:44,227 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:48:44,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:48:44,227 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:44,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:44,228 INFO L82 PathProgramCache]: Analyzing trace with hash 341462401, now seen corresponding path program 1 times [2020-10-29 07:48:44,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:44,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590208344] [2020-10-29 07:48:44,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:44,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:45,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:46,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:46,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 550 [2020-10-29 07:48:46,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:48:46,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1921 [2020-10-29 07:48:46,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:46,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:46,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:46,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:48:46,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:48:46,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:46,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:46,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:46,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:46,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:46,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:46,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:48:46,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:46,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:48:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:48:46,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:48:46,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:48:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:46,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:46,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:46,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:48:46,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:46,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 07:48:46,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:46,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:46,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:48:46,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:46,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:48:46,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:46,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:48:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:46,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:47,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:47,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:48:47,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:47,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 07:48:47,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:47,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:47,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:47,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:47,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:48:47,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:47,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:48:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:47,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:47,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:47,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:48:47,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:47,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 07:48:47,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:47,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:47,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:47,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:48:47,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 07:48:47,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:47,404 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 293 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:48:47,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590208344] [2020-10-29 07:48:47,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:48:47,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:48:47,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224664216] [2020-10-29 07:48:47,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:48:47,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:47,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:48:47,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:48:47,407 INFO L87 Difference]: Start difference. First operand 11531 states and 13963 transitions. Second operand 7 states. [2020-10-29 07:49:01,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:49:01,039 INFO L93 Difference]: Finished difference Result 25748 states and 33267 transitions. [2020-10-29 07:49:01,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:49:01,042 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 534 [2020-10-29 07:49:01,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:49:01,099 INFO L225 Difference]: With dead ends: 25748 [2020-10-29 07:49:01,100 INFO L226 Difference]: Without dead ends: 14530 [2020-10-29 07:49:01,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:49:01,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14530 states. [2020-10-29 07:49:01,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14530 to 14404. [2020-10-29 07:49:01,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14404 states. [2020-10-29 07:49:01,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14404 states to 14404 states and 17392 transitions. [2020-10-29 07:49:01,498 INFO L78 Accepts]: Start accepts. Automaton has 14404 states and 17392 transitions. Word has length 534 [2020-10-29 07:49:01,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:49:01,499 INFO L481 AbstractCegarLoop]: Abstraction has 14404 states and 17392 transitions. [2020-10-29 07:49:01,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:49:01,499 INFO L276 IsEmpty]: Start isEmpty. Operand 14404 states and 17392 transitions. [2020-10-29 07:49:01,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2020-10-29 07:49:01,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:01,506 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:49:01,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:49:01,506 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:01,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:01,507 INFO L82 PathProgramCache]: Analyzing trace with hash -473753206, now seen corresponding path program 1 times [2020-10-29 07:49:01,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:01,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599046487] [2020-10-29 07:49:01,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:49:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:01,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:01,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:03,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:04,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:04,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 558 [2020-10-29 07:49:04,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:49:04,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2690 [2020-10-29 07:49:04,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:04,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:04,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:04,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:49:04,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 07:49:04,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:04,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:49:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:04,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:04,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:04,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:49:04,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:04,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:49:04,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:04,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:04,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:49:04,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:04,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:49:04,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:04,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:49:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:04,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:04,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:04,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:49:04,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:04,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 07:49:04,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:04,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:49:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:49:04,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:04,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:49:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:04,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:04,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:04,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:49:04,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:04,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 07:49:04,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:04,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:04,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:04,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:04,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:49:04,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:04,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:49:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:04,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:04,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:04,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 07:49:04,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:04,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 07:49:04,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:04,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:04,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 07:49:04,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:05,230 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 309 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:49:05,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599046487] [2020-10-29 07:49:05,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:49:05,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:49:05,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335634541] [2020-10-29 07:49:05,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:49:05,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:05,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:49:05,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:49:05,233 INFO L87 Difference]: Start difference. First operand 14404 states and 17392 transitions. Second operand 7 states. [2020-10-29 07:49:08,813 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 07:49:22,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:49:22,497 INFO L93 Difference]: Finished difference Result 31383 states and 39820 transitions. [2020-10-29 07:49:22,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:49:22,500 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 542 [2020-10-29 07:49:22,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:49:22,567 INFO L225 Difference]: With dead ends: 31383 [2020-10-29 07:49:22,567 INFO L226 Difference]: Without dead ends: 20097 [2020-10-29 07:49:22,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:49:22,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20097 states. [2020-10-29 07:49:23,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20097 to 20068. [2020-10-29 07:49:23,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20068 states. [2020-10-29 07:49:23,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20068 states to 20068 states and 24402 transitions. [2020-10-29 07:49:23,161 INFO L78 Accepts]: Start accepts. Automaton has 20068 states and 24402 transitions. Word has length 542 [2020-10-29 07:49:23,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:49:23,163 INFO L481 AbstractCegarLoop]: Abstraction has 20068 states and 24402 transitions. [2020-10-29 07:49:23,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:49:23,163 INFO L276 IsEmpty]: Start isEmpty. Operand 20068 states and 24402 transitions. [2020-10-29 07:49:23,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2020-10-29 07:49:23,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:23,172 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:49:23,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 07:49:23,172 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:23,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:23,173 INFO L82 PathProgramCache]: Analyzing trace with hash -917449252, now seen corresponding path program 1 times [2020-10-29 07:49:23,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:23,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979548693] [2020-10-29 07:49:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:49:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:23,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:23,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking...