/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/loops/insertion_sort-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:58:39,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:58:39,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:58:39,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:58:39,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:58:39,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:58:39,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:58:39,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:58:39,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:58:39,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:58:39,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:58:39,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:58:39,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:58:39,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:58:39,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:58:39,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:58:39,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:58:39,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:58:39,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:58:39,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:58:39,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:58:39,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:58:39,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:58:39,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:58:39,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:58:39,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:58:39,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:58:39,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:58:39,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:58:39,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:58:39,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:58:39,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:58:39,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:58:39,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:58:39,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:58:39,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:58:39,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:58:39,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:58:39,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:58:39,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:58:39,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:58:39,197 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 09:58:39,223 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:58:39,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:58:39,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:58:39,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:58:39,226 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:58:39,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:58:39,226 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:58:39,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:58:39,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:58:39,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:58:39,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:58:39,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:58:39,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:58:39,228 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:58:39,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:58:39,228 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:58:39,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:58:39,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:58:39,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:58:39,229 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:58:39,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:58:39,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:58:39,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:58:39,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:58:39,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:58:39,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:58:39,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:58:39,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:58:39,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:58:39,231 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:58:39,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:58:39,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:58:39,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:58:39,637 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:58:39,639 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:58:39,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/insertion_sort-2.c [2020-10-29 09:58:39,734 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81fa7431f/dc03a11a641d40ab8f23bc7da387bdd6/FLAGfa7d86a35 [2020-10-29 09:58:40,331 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:58:40,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/insertion_sort-2.c [2020-10-29 09:58:40,339 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81fa7431f/dc03a11a641d40ab8f23bc7da387bdd6/FLAGfa7d86a35 [2020-10-29 09:58:40,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81fa7431f/dc03a11a641d40ab8f23bc7da387bdd6 [2020-10-29 09:58:40,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:58:40,709 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:58:40,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:58:40,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:58:40,719 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:58:40,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:58:40" (1/1) ... [2020-10-29 09:58:40,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad199fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:58:40, skipping insertion in model container [2020-10-29 09:58:40,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:58:40" (1/1) ... [2020-10-29 09:58:40,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:58:40,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:58:41,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:58:41,014 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:58:41,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:58:41,050 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:58:41,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:58:41 WrapperNode [2020-10-29 09:58:41,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:58:41,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:58:41,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:58:41,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:58:41,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:58:41" (1/1) ... [2020-10-29 09:58:41,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:58:41" (1/1) ... [2020-10-29 09:58:41,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:58:41" (1/1) ... [2020-10-29 09:58:41,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:58:41" (1/1) ... [2020-10-29 09:58:41,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:58:41" (1/1) ... [2020-10-29 09:58:41,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:58:41" (1/1) ... [2020-10-29 09:58:41,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:58:41" (1/1) ... [2020-10-29 09:58:41,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:58:41,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:58:41,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:58:41,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:58:41,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:58:41" (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 09:58:41,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:58:41,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:58:41,178 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:58:41,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 09:58:41,178 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:58:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:58:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:58:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:58:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:58:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:58:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-29 09:58:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:58:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:58:41,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:58:41,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:58:41,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:58:41,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:58:41,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:58:41,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:58:41,526 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:58:41,527 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-29 09:58:41,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:58:41 BoogieIcfgContainer [2020-10-29 09:58:41,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:58:41,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:58:41,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:58:41,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:58:41,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:58:40" (1/3) ... [2020-10-29 09:58:41,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3525ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:58:41, skipping insertion in model container [2020-10-29 09:58:41,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:58:41" (2/3) ... [2020-10-29 09:58:41,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3525ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:58:41, skipping insertion in model container [2020-10-29 09:58:41,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:58:41" (3/3) ... [2020-10-29 09:58:41,545 INFO L111 eAbstractionObserver]: Analyzing ICFG insertion_sort-2.c [2020-10-29 09:58:41,562 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:58:41,570 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:58:41,588 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:58:41,644 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:58:41,644 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:58:41,644 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:58:41,645 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:58:41,645 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:58:41,645 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:58:41,645 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:58:41,645 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:58:41,668 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-29 09:58:41,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-29 09:58:41,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:41,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:41,677 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:41,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:41,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1592384457, now seen corresponding path program 1 times [2020-10-29 09:58:41,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:41,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920918117] [2020-10-29 09:58:41,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:41,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:42,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:42,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:42,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 09:58:42,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:58:42,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 503 [2020-10-29 09:58:42,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:42,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:42,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:58:42,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:58:42,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:42,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:58:42,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:42,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:42,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:42,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:42,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:42,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 09:58:42,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:42,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:42,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:58:42,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:42,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:58:42,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:58:42,660 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 09:58:42,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920918117] [2020-10-29 09:58:42,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:58:42,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 09:58:42,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450300947] [2020-10-29 09:58:42,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:58:42,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:42,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:58:42,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:58:42,699 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 5 states. [2020-10-29 09:58:42,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:42,947 INFO L93 Difference]: Finished difference Result 68 states and 92 transitions. [2020-10-29 09:58:42,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:58:42,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-29 09:58:42,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:42,958 INFO L225 Difference]: With dead ends: 68 [2020-10-29 09:58:42,958 INFO L226 Difference]: Without dead ends: 29 [2020-10-29 09:58:42,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:58:42,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-29 09:58:43,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-29 09:58:43,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-29 09:58:43,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-29 09:58:43,027 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-10-29 09:58:43,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:43,029 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-29 09:58:43,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:58:43,029 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-29 09:58:43,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 09:58:43,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:43,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:43,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:58:43,032 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:43,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:43,033 INFO L82 PathProgramCache]: Analyzing trace with hash -672049741, now seen corresponding path program 1 times [2020-10-29 09:58:43,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:43,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042066110] [2020-10-29 09:58:43,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:43,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:43,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:43,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:43,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 09:58:43,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:58:43,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-10-29 09:58:43,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:43,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:43,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:58:43,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:58:43,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:58:43,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:43,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:43,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:43,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:43,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:43,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:43,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:58:43,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:43,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:43,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:58:43,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:43,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:58:43,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:58:43,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:58:43,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042066110] [2020-10-29 09:58:43,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:43,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 09:58:43,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205044487] [2020-10-29 09:58:43,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:58:43,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:43,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:58:43,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:58:43,864 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-10-29 09:58:44,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:44,049 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2020-10-29 09:58:44,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:58:44,063 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-29 09:58:44,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:44,064 INFO L225 Difference]: With dead ends: 57 [2020-10-29 09:58:44,065 INFO L226 Difference]: Without dead ends: 37 [2020-10-29 09:58:44,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:58:44,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-29 09:58:44,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2020-10-29 09:58:44,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 09:58:44,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-29 09:58:44,081 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 18 [2020-10-29 09:58:44,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:44,083 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-29 09:58:44,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:58:44,083 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-29 09:58:44,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 09:58:44,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:44,085 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:44,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:58:44,086 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:44,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:44,086 INFO L82 PathProgramCache]: Analyzing trace with hash -973587454, now seen corresponding path program 1 times [2020-10-29 09:58:44,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:44,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629353716] [2020-10-29 09:58:44,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:44,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:44,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:44,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 09:58:44,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:44,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 496 [2020-10-29 09:58:44,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:44,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:44,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:58:44,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 09:58:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:58:44,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:44,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:44,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:44,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:44,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:44,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:44,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:58:44,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:44,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:44,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:58:44,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:58:44,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:44,845 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 09:58:44,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629353716] [2020-10-29 09:58:44,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:44,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:58:44,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380727522] [2020-10-29 09:58:44,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:58:44,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:44,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:58:44,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:58:44,848 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 12 states. [2020-10-29 09:58:45,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:45,383 INFO L93 Difference]: Finished difference Result 67 states and 82 transitions. [2020-10-29 09:58:45,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 09:58:45,383 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-10-29 09:58:45,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:45,386 INFO L225 Difference]: With dead ends: 67 [2020-10-29 09:58:45,386 INFO L226 Difference]: Without dead ends: 64 [2020-10-29 09:58:45,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:58:45,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-29 09:58:45,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 44. [2020-10-29 09:58:45,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-29 09:58:45,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-10-29 09:58:45,401 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 26 [2020-10-29 09:58:45,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:45,402 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-10-29 09:58:45,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:58:45,402 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-10-29 09:58:45,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 09:58:45,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:45,403 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:58:45,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:58:45,404 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:45,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:45,404 INFO L82 PathProgramCache]: Analyzing trace with hash -371033344, now seen corresponding path program 1 times [2020-10-29 09:58:45,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:45,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360400847] [2020-10-29 09:58:45,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:45,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:45,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:46,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:46,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:58:46,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:58:46,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 890 [2020-10-29 09:58:46,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:46,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:46,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:58:46,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 09:58:46,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:58:46,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:46,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:46,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:46,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:46,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:46,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:46,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:58:46,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:46,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:46,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:58:46,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:46,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:58:46,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:58:46,536 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 09:58:46,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360400847] [2020-10-29 09:58:46,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:46,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:58:46,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466210498] [2020-10-29 09:58:46,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:58:46,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:46,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:58:46,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:58:46,539 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 12 states. [2020-10-29 09:58:47,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:47,175 INFO L93 Difference]: Finished difference Result 89 states and 107 transitions. [2020-10-29 09:58:47,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 09:58:47,176 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2020-10-29 09:58:47,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:47,179 INFO L225 Difference]: With dead ends: 89 [2020-10-29 09:58:47,179 INFO L226 Difference]: Without dead ends: 71 [2020-10-29 09:58:47,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:58:47,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-29 09:58:47,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 47. [2020-10-29 09:58:47,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 09:58:47,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-10-29 09:58:47,192 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 29 [2020-10-29 09:58:47,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:47,192 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-10-29 09:58:47,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:58:47,193 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-10-29 09:58:47,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 09:58:47,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:47,194 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:47,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:58:47,194 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:47,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:47,195 INFO L82 PathProgramCache]: Analyzing trace with hash -994677521, now seen corresponding path program 2 times [2020-10-29 09:58:47,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:47,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256926056] [2020-10-29 09:58:47,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:47,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:47,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:47,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:52,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:52,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 09:58:52,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:58:52,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4802 [2020-10-29 09:58:52,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:52,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:52,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:58:52,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 09:58:52,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:58:52,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:52,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:52,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:52,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:52,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:52,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:52,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:58:52,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:52,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:52,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:58:52,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:52,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:58:52,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:52,237 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 09:58:52,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256926056] [2020-10-29 09:58:52,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:52,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:58:52,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432096775] [2020-10-29 09:58:52,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:58:52,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:52,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:58:52,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:58:52,239 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 13 states. [2020-10-29 09:58:52,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:52,876 INFO L93 Difference]: Finished difference Result 86 states and 100 transitions. [2020-10-29 09:58:52,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:58:52,877 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-10-29 09:58:52,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:52,879 INFO L225 Difference]: With dead ends: 86 [2020-10-29 09:58:52,879 INFO L226 Difference]: Without dead ends: 83 [2020-10-29 09:58:52,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2020-10-29 09:58:52,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-29 09:58:52,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 53. [2020-10-29 09:58:52,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 09:58:52,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2020-10-29 09:58:52,890 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 32 [2020-10-29 09:58:52,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:52,891 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2020-10-29 09:58:52,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:58:52,891 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2020-10-29 09:58:52,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 09:58:52,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:52,893 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:58:52,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:58:52,894 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:52,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:52,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1194943896, now seen corresponding path program 1 times [2020-10-29 09:58:52,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:52,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141745207] [2020-10-29 09:58:52,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:52,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:52,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:53,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:53,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 09:58:53,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:58:53,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 978 [2020-10-29 09:58:53,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:53,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:58:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 09:58:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:58:53,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:58:54,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:54,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:54,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:54,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:54,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:54,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:58:54,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:54,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:54,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:58:54,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:54,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:58:54,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:58:54,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 09:58:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:54,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:54,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:54,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:54,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:54,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:58:54,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:54,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:54,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:54,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:54,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:54,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:54,030 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 09:58:54,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141745207] [2020-10-29 09:58:54,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:54,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:58:54,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055008538] [2020-10-29 09:58:54,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:58:54,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:54,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:58:54,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:58:54,033 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand 8 states. [2020-10-29 09:58:54,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:54,249 INFO L93 Difference]: Finished difference Result 83 states and 99 transitions. [2020-10-29 09:58:54,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:58:54,250 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-10-29 09:58:54,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:54,251 INFO L225 Difference]: With dead ends: 83 [2020-10-29 09:58:54,251 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 09:58:54,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:58:54,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 09:58:54,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 56. [2020-10-29 09:58:54,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 09:58:54,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2020-10-29 09:58:54,261 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 34 [2020-10-29 09:58:54,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:54,261 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2020-10-29 09:58:54,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:58:54,262 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2020-10-29 09:58:54,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 09:58:54,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:54,263 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:54,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:58:54,263 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:54,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:54,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1599994125, now seen corresponding path program 2 times [2020-10-29 09:58:54,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:54,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661930973] [2020-10-29 09:58:54,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:54,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:54,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:54,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:55,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:58,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:59,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:59,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:59,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 09:58:59,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:58:59,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 09:58:59,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:59,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:59,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:58:59,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 09:58:59,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 09:58:59,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:59,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:59,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:59,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:59,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:59,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:59,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:58:59,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:59,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:58:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:59,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:58:59,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:59,527 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 09:58:59,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661930973] [2020-10-29 09:58:59,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:59,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:58:59,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025813444] [2020-10-29 09:58:59,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:58:59,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:59,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:58:59,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:58:59,530 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand 14 states. [2020-10-29 09:59:00,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:00,524 INFO L93 Difference]: Finished difference Result 132 states and 166 transitions. [2020-10-29 09:59:00,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 09:59:00,525 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-10-29 09:59:00,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:00,526 INFO L225 Difference]: With dead ends: 132 [2020-10-29 09:59:00,526 INFO L226 Difference]: Without dead ends: 129 [2020-10-29 09:59:00,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=184, Invalid=1148, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 09:59:00,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-29 09:59:00,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 68. [2020-10-29 09:59:00,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-29 09:59:00,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2020-10-29 09:59:00,558 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 84 transitions. Word has length 35 [2020-10-29 09:59:00,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:00,558 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 84 transitions. [2020-10-29 09:59:00,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:59:00,558 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 84 transitions. [2020-10-29 09:59:00,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 09:59:00,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:00,560 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:00,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:59:00,560 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:00,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:00,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1727219285, now seen corresponding path program 1 times [2020-10-29 09:59:00,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:00,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693335959] [2020-10-29 09:59:00,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:00,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:00,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:00,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:00,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:01,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:01,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:02,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:03,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:04,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:04,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:05,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:05,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 09:59:05,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 09:59:05,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 09:59:05,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:05,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:05,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:59:05,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 09:59:05,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 09:59:05,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:05,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:05,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:05,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:05,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:05,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:05,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:59:05,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:05,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:05,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:05,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:05,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:05,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:05,828 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 09:59:05,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693335959] [2020-10-29 09:59:05,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:05,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:59:05,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633048413] [2020-10-29 09:59:05,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:59:05,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:05,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:59:05,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:59:05,831 INFO L87 Difference]: Start difference. First operand 68 states and 84 transitions. Second operand 13 states. [2020-10-29 09:59:06,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:06,339 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2020-10-29 09:59:06,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 09:59:06,340 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2020-10-29 09:59:06,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:06,341 INFO L225 Difference]: With dead ends: 90 [2020-10-29 09:59:06,341 INFO L226 Difference]: Without dead ends: 87 [2020-10-29 09:59:06,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:59:06,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-29 09:59:06,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 62. [2020-10-29 09:59:06,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-29 09:59:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2020-10-29 09:59:06,359 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 35 [2020-10-29 09:59:06,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:06,361 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2020-10-29 09:59:06,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:59:06,362 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2020-10-29 09:59:06,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 09:59:06,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:06,364 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:06,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:59:06,364 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:06,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:06,367 INFO L82 PathProgramCache]: Analyzing trace with hash -19267985, now seen corresponding path program 3 times [2020-10-29 09:59:06,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:06,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699600122] [2020-10-29 09:59:06,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:06,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:06,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:06,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:07,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:07,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:08,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:10,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:10,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:10,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:11,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:11,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:11,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 09:59:11,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 09:59:11,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 09:59:11,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:11,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:11,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:59:11,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 09:59:11,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:59:11,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:11,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:11,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:11,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:11,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:11,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:11,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:59:11,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:11,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:11,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:11,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:11,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:11,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:11,618 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 09:59:11,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699600122] [2020-10-29 09:59:11,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:11,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:59:11,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000275762] [2020-10-29 09:59:11,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:59:11,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:11,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:59:11,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:59:11,627 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand 14 states. [2020-10-29 09:59:12,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:12,890 INFO L93 Difference]: Finished difference Result 140 states and 175 transitions. [2020-10-29 09:59:12,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 09:59:12,890 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-10-29 09:59:12,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:12,892 INFO L225 Difference]: With dead ends: 140 [2020-10-29 09:59:12,892 INFO L226 Difference]: Without dead ends: 137 [2020-10-29 09:59:12,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 09:59:12,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-29 09:59:12,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 65. [2020-10-29 09:59:12,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 09:59:12,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 81 transitions. [2020-10-29 09:59:12,919 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 81 transitions. Word has length 38 [2020-10-29 09:59:12,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:12,920 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 81 transitions. [2020-10-29 09:59:12,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:59:12,920 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 81 transitions. [2020-10-29 09:59:12,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 09:59:12,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:12,925 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:12,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:59:12,926 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:12,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:12,926 INFO L82 PathProgramCache]: Analyzing trace with hash 833588821, now seen corresponding path program 2 times [2020-10-29 09:59:12,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:12,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665518844] [2020-10-29 09:59:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:12,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:13,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:14,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:15,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:15,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 09:59:15,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:59:15,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2204 [2020-10-29 09:59:15,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:15,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:59:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:59:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 09:59:15,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:15,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:15,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:15,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:15,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:15,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:15,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:59:15,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:15,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:15,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:15,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:15,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:15,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:15,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 09:59:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:15,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:15,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:15,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:15,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:15,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:59:15,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:15,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:15,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:15,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:15,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:15,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:15,349 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 09:59:15,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665518844] [2020-10-29 09:59:15,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:15,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:59:15,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870326068] [2020-10-29 09:59:15,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:59:15,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:15,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:59:15,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:59:15,351 INFO L87 Difference]: Start difference. First operand 65 states and 81 transitions. Second operand 9 states. [2020-10-29 09:59:15,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:15,610 INFO L93 Difference]: Finished difference Result 137 states and 175 transitions. [2020-10-29 09:59:15,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:59:15,611 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-29 09:59:15,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:15,613 INFO L225 Difference]: With dead ends: 137 [2020-10-29 09:59:15,613 INFO L226 Difference]: Without dead ends: 120 [2020-10-29 09:59:15,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:59:15,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-29 09:59:15,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 105. [2020-10-29 09:59:15,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-29 09:59:15,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 135 transitions. [2020-10-29 09:59:15,629 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 135 transitions. Word has length 40 [2020-10-29 09:59:15,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:15,630 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 135 transitions. [2020-10-29 09:59:15,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:59:15,630 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 135 transitions. [2020-10-29 09:59:15,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 09:59:15,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:15,631 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:15,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 09:59:15,632 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:15,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:15,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1154977958, now seen corresponding path program 4 times [2020-10-29 09:59:15,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:15,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140790753] [2020-10-29 09:59:15,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:15,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:15,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:16,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:16,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:17,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:17,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:18,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:18,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:20,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:20,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:20,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 09:59:20,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 09:59:20,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 09:59:20,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:20,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:20,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 09:59:20,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 09:59:20,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 09:59:20,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:21,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:21,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:21,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:21,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:21,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:21,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:59:21,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:21,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:21,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:21,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:21,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:21,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:21,114 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 09:59:21,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140790753] [2020-10-29 09:59:21,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:21,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:59:21,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126294203] [2020-10-29 09:59:21,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:59:21,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:21,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:59:21,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:59:21,116 INFO L87 Difference]: Start difference. First operand 105 states and 135 transitions. Second operand 16 states. [2020-10-29 09:59:22,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:22,001 INFO L93 Difference]: Finished difference Result 232 states and 314 transitions. [2020-10-29 09:59:22,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 09:59:22,002 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2020-10-29 09:59:22,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:22,004 INFO L225 Difference]: With dead ends: 232 [2020-10-29 09:59:22,005 INFO L226 Difference]: Without dead ends: 226 [2020-10-29 09:59:22,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=185, Invalid=807, Unknown=0, NotChecked=0, Total=992 [2020-10-29 09:59:22,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-29 09:59:22,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 153. [2020-10-29 09:59:22,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-29 09:59:22,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 210 transitions. [2020-10-29 09:59:22,029 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 210 transitions. Word has length 41 [2020-10-29 09:59:22,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:22,031 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 210 transitions. [2020-10-29 09:59:22,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 09:59:22,031 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 210 transitions. [2020-10-29 09:59:22,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 09:59:22,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:22,033 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:22,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 09:59:22,035 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:22,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:22,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1413143396, now seen corresponding path program 2 times [2020-10-29 09:59:22,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:22,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018319592] [2020-10-29 09:59:22,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:22,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:22,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:22,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:22,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:22,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:23,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:23,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:23,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:27,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:27,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 09:59:27,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:59:27,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 09:59:27,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:27,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:27,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:59:27,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 09:59:27,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:59:27,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:27,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:27,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:27,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:27,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:27,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:27,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:59:27,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:27,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:27,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:27,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:27,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:27,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:27,321 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 09:59:27,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018319592] [2020-10-29 09:59:27,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:27,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:59:27,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759728467] [2020-10-29 09:59:27,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:59:27,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:27,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:59:27,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:59:27,324 INFO L87 Difference]: Start difference. First operand 153 states and 210 transitions. Second operand 13 states. [2020-10-29 09:59:29,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:29,242 INFO L93 Difference]: Finished difference Result 374 states and 498 transitions. [2020-10-29 09:59:29,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 09:59:29,243 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-29 09:59:29,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:29,248 INFO L225 Difference]: With dead ends: 374 [2020-10-29 09:59:29,248 INFO L226 Difference]: Without dead ends: 352 [2020-10-29 09:59:29,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=359, Invalid=1201, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 09:59:29,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-10-29 09:59:29,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 184. [2020-10-29 09:59:29,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-29 09:59:29,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 255 transitions. [2020-10-29 09:59:29,295 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 255 transitions. Word has length 41 [2020-10-29 09:59:29,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:29,297 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 255 transitions. [2020-10-29 09:59:29,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:59:29,297 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 255 transitions. [2020-10-29 09:59:29,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 09:59:29,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:29,298 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:29,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 09:59:29,299 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:29,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:29,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1629900849, now seen corresponding path program 3 times [2020-10-29 09:59:29,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:29,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553065670] [2020-10-29 09:59:29,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:29,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:29,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:29,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:29,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:29,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:30,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:30,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:30,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:30,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:30,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:32,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:32,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:34,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:34,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 09:59:34,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 09:59:34,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 09:59:34,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:34,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:34,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:59:34,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:59:34,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:59:34,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:34,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:34,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:34,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:34,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:34,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:34,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:34,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:34,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:34,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:34,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:34,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:34,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:34,527 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:59:34,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553065670] [2020-10-29 09:59:34,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:34,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:59:34,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445884416] [2020-10-29 09:59:34,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:59:34,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:34,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:59:34,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:59:34,529 INFO L87 Difference]: Start difference. First operand 184 states and 255 transitions. Second operand 14 states. [2020-10-29 09:59:36,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:36,268 INFO L93 Difference]: Finished difference Result 529 states and 733 transitions. [2020-10-29 09:59:36,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-29 09:59:36,269 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 41 [2020-10-29 09:59:36,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:36,272 INFO L225 Difference]: With dead ends: 529 [2020-10-29 09:59:36,272 INFO L226 Difference]: Without dead ends: 390 [2020-10-29 09:59:36,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=554, Invalid=2868, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 09:59:36,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-10-29 09:59:36,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 216. [2020-10-29 09:59:36,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-29 09:59:36,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 294 transitions. [2020-10-29 09:59:36,308 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 294 transitions. Word has length 41 [2020-10-29 09:59:36,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:36,308 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 294 transitions. [2020-10-29 09:59:36,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:59:36,309 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 294 transitions. [2020-10-29 09:59:36,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 09:59:36,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:36,310 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:36,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 09:59:36,310 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:36,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:36,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1027752798, now seen corresponding path program 4 times [2020-10-29 09:59:36,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:36,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129650156] [2020-10-29 09:59:36,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:36,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:36,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:36,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:36,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:36,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:36,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:38,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:38,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:38,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:38,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:38,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:40,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:40,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:40,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:40,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:41,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:41,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:41,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 09:59:41,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 09:59:41,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 09:59:41,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:41,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:41,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 09:59:41,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:59:41,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 09:59:41,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:42,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:42,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:42,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:42,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:42,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:42,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:59:42,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:42,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:42,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:42,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:42,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:42,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:42,312 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 09:59:42,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129650156] [2020-10-29 09:59:42,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:42,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 09:59:42,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890415172] [2020-10-29 09:59:42,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 09:59:42,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:42,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 09:59:42,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:59:42,315 INFO L87 Difference]: Start difference. First operand 216 states and 294 transitions. Second operand 21 states. [2020-10-29 09:59:43,228 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-29 09:59:43,819 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-29 09:59:44,694 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-29 09:59:45,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:45,562 INFO L93 Difference]: Finished difference Result 311 states and 418 transitions. [2020-10-29 09:59:45,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 09:59:45,563 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 41 [2020-10-29 09:59:45,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:45,566 INFO L225 Difference]: With dead ends: 311 [2020-10-29 09:59:45,567 INFO L226 Difference]: Without dead ends: 298 [2020-10-29 09:59:45,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=419, Invalid=2233, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 09:59:45,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-29 09:59:45,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 243. [2020-10-29 09:59:45,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-29 09:59:45,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 334 transitions. [2020-10-29 09:59:45,607 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 334 transitions. Word has length 41 [2020-10-29 09:59:45,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:45,608 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 334 transitions. [2020-10-29 09:59:45,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 09:59:45,608 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 334 transitions. [2020-10-29 09:59:45,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 09:59:45,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:45,610 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:45,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 09:59:45,610 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:45,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:45,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1653835895, now seen corresponding path program 3 times [2020-10-29 09:59:45,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:45,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348580593] [2020-10-29 09:59:45,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:45,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:46,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:46,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 09:59:46,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:46,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-10-29 09:59:46,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:46,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:46,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:59:46,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 09:59:46,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 09:59:46,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:46,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:46,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:46,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:46,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:46,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:46,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:59:46,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:46,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:46,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:46,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:46,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:46,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:46,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 09:59:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:46,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:46,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:46,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:46,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:46,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:46,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:46,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:46,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:46,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:46,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:46,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:46,297 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 09:59:46,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348580593] [2020-10-29 09:59:46,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:46,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:59:46,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271456884] [2020-10-29 09:59:46,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:59:46,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:46,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:59:46,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:59:46,299 INFO L87 Difference]: Start difference. First operand 243 states and 334 transitions. Second operand 14 states. [2020-10-29 09:59:47,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:47,059 INFO L93 Difference]: Finished difference Result 379 states and 514 transitions. [2020-10-29 09:59:47,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:59:47,060 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2020-10-29 09:59:47,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:47,063 INFO L225 Difference]: With dead ends: 379 [2020-10-29 09:59:47,063 INFO L226 Difference]: Without dead ends: 376 [2020-10-29 09:59:47,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2020-10-29 09:59:47,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-10-29 09:59:47,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 260. [2020-10-29 09:59:47,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-29 09:59:47,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 354 transitions. [2020-10-29 09:59:47,105 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 354 transitions. Word has length 42 [2020-10-29 09:59:47,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:47,106 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 354 transitions. [2020-10-29 09:59:47,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:59:47,106 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 354 transitions. [2020-10-29 09:59:47,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 09:59:47,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:47,110 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:47,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 09:59:47,110 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:47,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:47,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1287756367, now seen corresponding path program 5 times [2020-10-29 09:59:47,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:47,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251812153] [2020-10-29 09:59:47,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:47,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:47,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:47,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:48,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:48,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:49,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:52,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:52,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 09:59:52,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:59:52,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 09:59:52,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:52,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:52,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:59:52,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:59:52,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:59:52,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:52,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:52,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:52,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:52,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:52,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:52,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:52,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:52,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:52,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:52,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:52,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:52,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:52,343 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:59:52,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251812153] [2020-10-29 09:59:52,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:52,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 09:59:52,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139490126] [2020-10-29 09:59:52,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 09:59:52,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:52,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 09:59:52,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:59:52,345 INFO L87 Difference]: Start difference. First operand 260 states and 354 transitions. Second operand 15 states. [2020-10-29 09:59:54,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:54,934 INFO L93 Difference]: Finished difference Result 753 states and 1004 transitions. [2020-10-29 09:59:54,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-29 09:59:54,935 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2020-10-29 09:59:54,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:54,938 INFO L225 Difference]: With dead ends: 753 [2020-10-29 09:59:54,938 INFO L226 Difference]: Without dead ends: 484 [2020-10-29 09:59:54,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1572 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=556, Invalid=4414, Unknown=0, NotChecked=0, Total=4970 [2020-10-29 09:59:54,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-10-29 09:59:54,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 254. [2020-10-29 09:59:54,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-29 09:59:54,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 323 transitions. [2020-10-29 09:59:54,976 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 323 transitions. Word has length 43 [2020-10-29 09:59:54,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:54,976 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 323 transitions. [2020-10-29 09:59:54,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 09:59:54,977 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 323 transitions. [2020-10-29 09:59:54,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 09:59:54,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:54,978 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:54,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 09:59:54,978 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:54,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:54,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1127368019, now seen corresponding path program 6 times [2020-10-29 09:59:54,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:54,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135691481] [2020-10-29 09:59:54,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:55,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:55,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:55,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:55,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:55,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:55,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:55,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:55,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:55,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:57,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:57,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:57,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:57,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:00,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:00,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 10:00:00,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 10:00:00,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 10:00:00,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:00,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:00,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 10:00:00,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 10:00:00,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 10:00:00,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:00,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:00,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:00,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:00,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:00,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:00,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:00:00,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:00,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:00,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:00,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:00,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:00,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:00:00,230 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 10:00:00,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135691481] [2020-10-29 10:00:00,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:00,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 10:00:00,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097282983] [2020-10-29 10:00:00,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 10:00:00,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:00,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 10:00:00,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-29 10:00:00,233 INFO L87 Difference]: Start difference. First operand 254 states and 323 transitions. Second operand 15 states. [2020-10-29 10:00:01,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:01,755 INFO L93 Difference]: Finished difference Result 386 states and 484 transitions. [2020-10-29 10:00:01,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-29 10:00:01,756 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-10-29 10:00:01,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:01,758 INFO L225 Difference]: With dead ends: 386 [2020-10-29 10:00:01,758 INFO L226 Difference]: Without dead ends: 364 [2020-10-29 10:00:01,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=339, Invalid=1823, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 10:00:01,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-29 10:00:01,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 260. [2020-10-29 10:00:01,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-29 10:00:01,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 330 transitions. [2020-10-29 10:00:01,792 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 330 transitions. Word has length 44 [2020-10-29 10:00:01,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:01,792 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 330 transitions. [2020-10-29 10:00:01,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 10:00:01,793 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 330 transitions. [2020-10-29 10:00:01,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 10:00:01,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:01,794 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:01,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 10:00:01,794 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:01,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:01,794 INFO L82 PathProgramCache]: Analyzing trace with hash 833702967, now seen corresponding path program 7 times [2020-10-29 10:00:01,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:01,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316621199] [2020-10-29 10:00:01,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:01,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:01,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:01,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:02,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:02,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:02,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:02,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:02,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:02,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:02,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:02,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:06,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:06,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 10:00:06,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 10:00:06,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 10:00:06,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:06,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:00:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 10:00:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 10:00:06,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:06,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:06,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:06,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:06,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:06,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:06,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:00:06,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:06,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:06,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:06,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:06,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:06,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:06,888 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 19 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 10:00:06,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316621199] [2020-10-29 10:00:06,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:06,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 10:00:06,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38406910] [2020-10-29 10:00:06,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 10:00:06,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:06,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 10:00:06,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 10:00:06,890 INFO L87 Difference]: Start difference. First operand 260 states and 330 transitions. Second operand 9 states. [2020-10-29 10:00:07,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:07,350 INFO L93 Difference]: Finished difference Result 347 states and 441 transitions. [2020-10-29 10:00:07,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 10:00:07,350 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-10-29 10:00:07,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:07,352 INFO L225 Difference]: With dead ends: 347 [2020-10-29 10:00:07,352 INFO L226 Difference]: Without dead ends: 198 [2020-10-29 10:00:07,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-10-29 10:00:07,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-29 10:00:07,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 153. [2020-10-29 10:00:07,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-29 10:00:07,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 188 transitions. [2020-10-29 10:00:07,383 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 188 transitions. Word has length 44 [2020-10-29 10:00:07,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:07,383 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 188 transitions. [2020-10-29 10:00:07,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 10:00:07,383 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 188 transitions. [2020-10-29 10:00:07,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 10:00:07,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:07,385 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:07,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 10:00:07,385 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:07,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:07,386 INFO L82 PathProgramCache]: Analyzing trace with hash -530309385, now seen corresponding path program 1 times [2020-10-29 10:00:07,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:07,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966728506] [2020-10-29 10:00:07,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:07,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:08,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:08,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 10:00:08,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:08,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 605 [2020-10-29 10:00:08,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:08,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 10:00:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 10:00:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 10:00:08,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:08,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:08,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:08,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:08,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:08,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:08,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:00:08,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:08,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:08,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:08,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:08,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:08,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:08,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 10:00:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:08,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:08,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:08,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:00:08,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:08,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:00:08,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:08,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:08,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:00:08,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:08,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:00:08,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:08,280 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 10:00:08,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966728506] [2020-10-29 10:00:08,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:08,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 10:00:08,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918116444] [2020-10-29 10:00:08,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 10:00:08,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:08,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 10:00:08,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-29 10:00:08,283 INFO L87 Difference]: Start difference. First operand 153 states and 188 transitions. Second operand 14 states. [2020-10-29 10:00:09,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:09,024 INFO L93 Difference]: Finished difference Result 200 states and 244 transitions. [2020-10-29 10:00:09,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 10:00:09,025 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2020-10-29 10:00:09,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:09,027 INFO L225 Difference]: With dead ends: 200 [2020-10-29 10:00:09,027 INFO L226 Difference]: Without dead ends: 197 [2020-10-29 10:00:09,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2020-10-29 10:00:09,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-29 10:00:09,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 156. [2020-10-29 10:00:09,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-29 10:00:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 192 transitions. [2020-10-29 10:00:09,058 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 192 transitions. Word has length 45 [2020-10-29 10:00:09,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:09,058 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 192 transitions. [2020-10-29 10:00:09,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 10:00:09,058 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 192 transitions. [2020-10-29 10:00:09,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 10:00:09,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:09,061 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:09,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 10:00:09,061 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:09,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:09,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1697724390, now seen corresponding path program 8 times [2020-10-29 10:00:09,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:09,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773336348] [2020-10-29 10:00:09,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:09,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:09,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:09,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:09,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:09,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:09,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:09,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:10,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:10,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:14,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:14,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 10:00:14,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 10:00:14,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 10:00:14,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:14,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:14,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 10:00:14,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 10:00:14,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 10:00:14,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:14,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:14,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:14,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:14,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:14,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:14,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:00:14,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:14,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:14,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:14,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:14,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:14,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:14,552 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 14 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 10:00:14,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773336348] [2020-10-29 10:00:14,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:14,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 10:00:14,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265307215] [2020-10-29 10:00:14,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 10:00:14,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:14,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 10:00:14,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-29 10:00:14,554 INFO L87 Difference]: Start difference. First operand 156 states and 192 transitions. Second operand 16 states. [2020-10-29 10:00:17,207 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2020-10-29 10:00:18,620 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-29 10:00:21,008 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-29 10:00:21,470 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-29 10:00:21,933 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2020-10-29 10:00:22,392 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-10-29 10:00:23,194 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-29 10:00:23,495 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-10-29 10:00:25,682 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 42 [2020-10-29 10:00:25,937 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-10-29 10:00:27,653 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification that was a NOOP. DAG size: 46 [2020-10-29 10:00:27,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:27,887 INFO L93 Difference]: Finished difference Result 316 states and 400 transitions. [2020-10-29 10:00:27,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-29 10:00:27,888 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-10-29 10:00:27,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:27,890 INFO L225 Difference]: With dead ends: 316 [2020-10-29 10:00:27,890 INFO L226 Difference]: Without dead ends: 286 [2020-10-29 10:00:27,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=681, Invalid=1768, Unknown=1, NotChecked=0, Total=2450 [2020-10-29 10:00:27,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-29 10:00:27,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 181. [2020-10-29 10:00:27,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-29 10:00:27,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 229 transitions. [2020-10-29 10:00:27,934 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 229 transitions. Word has length 45 [2020-10-29 10:00:27,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:27,934 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 229 transitions. [2020-10-29 10:00:27,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 10:00:27,934 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 229 transitions. [2020-10-29 10:00:27,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 10:00:27,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:27,935 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:27,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 10:00:27,935 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:27,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:27,936 INFO L82 PathProgramCache]: Analyzing trace with hash -465459915, now seen corresponding path program 1 times [2020-10-29 10:00:27,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:27,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216602633] [2020-10-29 10:00:27,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:27,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:28,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:28,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:28,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:29,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:30,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:30,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:31,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:31,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:31,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:32,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:32,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:32,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 10:00:32,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 10:00:32,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 10:00:32,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:32,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 10:00:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 10:00:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 10:00:32,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:33,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:33,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:33,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:33,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:33,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:33,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:00:33,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:33,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:33,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:33,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:33,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:33,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:33,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 10:00:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:33,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:33,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:33,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:00:33,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:33,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:00:33,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:33,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:33,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:00:33,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:33,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:00:33,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:33,438 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 10:00:33,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216602633] [2020-10-29 10:00:33,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:33,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 10:00:33,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133155372] [2020-10-29 10:00:33,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 10:00:33,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:33,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 10:00:33,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2020-10-29 10:00:33,440 INFO L87 Difference]: Start difference. First operand 181 states and 229 transitions. Second operand 18 states. [2020-10-29 10:00:34,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:34,706 INFO L93 Difference]: Finished difference Result 275 states and 334 transitions. [2020-10-29 10:00:34,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 10:00:34,707 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 48 [2020-10-29 10:00:34,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:34,710 INFO L225 Difference]: With dead ends: 275 [2020-10-29 10:00:34,710 INFO L226 Difference]: Without dead ends: 272 [2020-10-29 10:00:34,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2020-10-29 10:00:34,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-29 10:00:34,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 204. [2020-10-29 10:00:34,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-29 10:00:34,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 254 transitions. [2020-10-29 10:00:34,749 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 254 transitions. Word has length 48 [2020-10-29 10:00:34,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:34,749 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 254 transitions. [2020-10-29 10:00:34,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 10:00:34,750 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 254 transitions. [2020-10-29 10:00:34,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 10:00:34,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:34,751 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:34,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 10:00:34,751 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:34,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:34,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1633902115, now seen corresponding path program 4 times [2020-10-29 10:00:34,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:34,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924641067] [2020-10-29 10:00:34,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:34,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:34,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:36,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:36,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 10:00:36,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:00:36,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1534 [2020-10-29 10:00:36,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:36,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:36,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:00:36,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 10:00:36,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 10:00:36,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:36,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:36,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:36,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:36,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:36,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:36,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:00:36,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:36,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:36,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:36,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:36,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:36,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:36,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 10:00:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:36,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:36,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:36,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:00:36,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:36,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:00:36,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:36,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:36,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:00:36,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:36,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:00:36,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:36,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 10:00:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:36,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:36,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:36,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:00:36,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:36,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:00:36,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:36,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:36,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:00:36,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:36,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:00:36,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:36,478 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 10:00:36,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924641067] [2020-10-29 10:00:36,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:36,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 10:00:36,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411789562] [2020-10-29 10:00:36,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 10:00:36,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:36,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 10:00:36,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 10:00:36,480 INFO L87 Difference]: Start difference. First operand 204 states and 254 transitions. Second operand 10 states. [2020-10-29 10:00:36,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:36,969 INFO L93 Difference]: Finished difference Result 312 states and 388 transitions. [2020-10-29 10:00:36,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 10:00:36,973 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-10-29 10:00:36,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:36,974 INFO L225 Difference]: With dead ends: 312 [2020-10-29 10:00:36,974 INFO L226 Difference]: Without dead ends: 261 [2020-10-29 10:00:36,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-10-29 10:00:36,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-29 10:00:37,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 174. [2020-10-29 10:00:37,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-29 10:00:37,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 218 transitions. [2020-10-29 10:00:37,004 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 218 transitions. Word has length 50 [2020-10-29 10:00:37,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:37,004 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 218 transitions. [2020-10-29 10:00:37,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 10:00:37,005 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 218 transitions. [2020-10-29 10:00:37,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 10:00:37,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:37,005 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:37,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 10:00:37,006 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:37,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:37,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1546981282, now seen corresponding path program 9 times [2020-10-29 10:00:37,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:37,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263165331] [2020-10-29 10:00:37,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:37,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:37,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:37,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:37,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:37,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:38,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:38,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:38,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:38,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:39,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:39,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:39,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:39,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:39,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:39,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:42,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:42,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 10:00:42,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 10:00:42,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 10:00:42,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:42,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:42,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 10:00:42,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 10:00:42,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 10:00:42,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:42,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:42,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:42,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:42,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:42,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:42,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:00:42,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:42,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:42,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:42,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:42,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:42,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:42,541 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 44 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 10:00:42,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263165331] [2020-10-29 10:00:42,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:42,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 10:00:42,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575671606] [2020-10-29 10:00:42,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 10:00:42,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:42,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 10:00:42,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-29 10:00:42,543 INFO L87 Difference]: Start difference. First operand 174 states and 218 transitions. Second operand 16 states. [2020-10-29 10:00:47,246 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-10-29 10:00:51,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:51,842 INFO L93 Difference]: Finished difference Result 398 states and 501 transitions. [2020-10-29 10:00:51,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-29 10:00:51,843 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2020-10-29 10:00:51,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:51,846 INFO L225 Difference]: With dead ends: 398 [2020-10-29 10:00:51,846 INFO L226 Difference]: Without dead ends: 379 [2020-10-29 10:00:51,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=939, Invalid=2842, Unknown=1, NotChecked=0, Total=3782 [2020-10-29 10:00:51,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-10-29 10:00:51,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 198. [2020-10-29 10:00:51,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-29 10:00:51,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 250 transitions. [2020-10-29 10:00:51,896 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 250 transitions. Word has length 48 [2020-10-29 10:00:51,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:51,896 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 250 transitions. [2020-10-29 10:00:51,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 10:00:51,896 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 250 transitions. [2020-10-29 10:00:51,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 10:00:51,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:51,897 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:51,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 10:00:51,897 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:51,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:51,898 INFO L82 PathProgramCache]: Analyzing trace with hash -63692898, now seen corresponding path program 10 times [2020-10-29 10:00:51,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:51,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336599989] [2020-10-29 10:00:51,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:51,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:51,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:52,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:52,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:52,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:52,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:53,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:53,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:53,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:54,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:55,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:55,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:56,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:56,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:56,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:57,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:57,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 10:00:57,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 10:00:57,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5112 [2020-10-29 10:00:57,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:57,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:57,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 10:00:57,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 10:00:57,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 10:00:57,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:57,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:57,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:57,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:57,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:57,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:57,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:00:57,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:57,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:57,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:57,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:57,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:57,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:57,364 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 10:00:57,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336599989] [2020-10-29 10:00:57,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:57,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 10:00:57,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464514449] [2020-10-29 10:00:57,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 10:00:57,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:57,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 10:00:57,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-29 10:00:57,366 INFO L87 Difference]: Start difference. First operand 198 states and 250 transitions. Second operand 15 states. [2020-10-29 10:00:58,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:58,835 INFO L93 Difference]: Finished difference Result 267 states and 325 transitions. [2020-10-29 10:00:58,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 10:00:58,837 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-10-29 10:00:58,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:58,840 INFO L225 Difference]: With dead ends: 267 [2020-10-29 10:00:58,840 INFO L226 Difference]: Without dead ends: 264 [2020-10-29 10:00:58,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 10:00:58,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-29 10:00:58,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 222. [2020-10-29 10:00:58,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-29 10:00:58,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 279 transitions. [2020-10-29 10:00:58,877 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 279 transitions. Word has length 48 [2020-10-29 10:00:58,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:58,877 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 279 transitions. [2020-10-29 10:00:58,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 10:00:58,878 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 279 transitions. [2020-10-29 10:00:58,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 10:00:58,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:58,878 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:58,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 10:00:58,879 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:58,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:58,879 INFO L82 PathProgramCache]: Analyzing trace with hash -2012198610, now seen corresponding path program 11 times [2020-10-29 10:00:58,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:58,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671541746] [2020-10-29 10:00:58,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:58,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:59,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:59,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:59,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:00,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:00,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:00,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:00,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:01,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:01,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:01,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:01,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:01,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:03,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:03,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 10:01:03,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 10:01:03,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 10:01:03,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:03,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:03,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 10:01:03,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 10:01:03,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 10:01:03,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:04,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:01:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:04,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:04,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:04,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:01:04,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:04,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:01:04,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:04,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:04,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:01:04,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:04,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:01:04,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 10:01:04,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671541746] [2020-10-29 10:01:04,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:01:04,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 10:01:04,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214322893] [2020-10-29 10:01:04,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 10:01:04,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:01:04,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 10:01:04,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-10-29 10:01:04,407 INFO L87 Difference]: Start difference. First operand 222 states and 279 transitions. Second operand 18 states. [2020-10-29 10:01:05,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:01:05,963 INFO L93 Difference]: Finished difference Result 310 states and 384 transitions. [2020-10-29 10:01:05,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 10:01:05,965 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 48 [2020-10-29 10:01:05,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:01:05,967 INFO L225 Difference]: With dead ends: 310 [2020-10-29 10:01:05,967 INFO L226 Difference]: Without dead ends: 307 [2020-10-29 10:01:05,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2020-10-29 10:01:05,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-29 10:01:06,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 234. [2020-10-29 10:01:06,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-29 10:01:06,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 296 transitions. [2020-10-29 10:01:06,012 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 296 transitions. Word has length 48 [2020-10-29 10:01:06,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:01:06,012 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 296 transitions. [2020-10-29 10:01:06,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 10:01:06,012 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 296 transitions. [2020-10-29 10:01:06,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 10:01:06,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:01:06,013 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:01:06,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 10:01:06,014 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:01:06,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:01:06,014 INFO L82 PathProgramCache]: Analyzing trace with hash -145279064, now seen corresponding path program 12 times [2020-10-29 10:01:06,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:01:06,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530101446] [2020-10-29 10:01:06,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:01:06,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:06,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:06,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:06,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:07,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:07,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:07,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:07,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:08,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:08,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:09,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:09,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:09,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:09,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:10,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:10,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:10,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:11,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:11,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:11,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 10:01:11,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-29 10:01:11,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 10:01:11,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:11,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:11,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 10:01:11,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 10:01:11,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 10:01:11,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:11,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:01:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:11,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:11,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:11,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:01:11,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:11,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:01:11,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:11,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:11,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:01:11,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:11,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:01:11,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:11,371 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 10:01:11,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530101446] [2020-10-29 10:01:11,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:01:11,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 10:01:11,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632159318] [2020-10-29 10:01:11,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 10:01:11,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:01:11,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 10:01:11,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-29 10:01:11,373 INFO L87 Difference]: Start difference. First operand 234 states and 296 transitions. Second operand 15 states. [2020-10-29 10:01:12,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:01:12,714 INFO L93 Difference]: Finished difference Result 317 states and 390 transitions. [2020-10-29 10:01:12,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 10:01:12,716 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-10-29 10:01:12,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:01:12,718 INFO L225 Difference]: With dead ends: 317 [2020-10-29 10:01:12,718 INFO L226 Difference]: Without dead ends: 314 [2020-10-29 10:01:12,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=180, Invalid=1080, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 10:01:12,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-29 10:01:12,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 234. [2020-10-29 10:01:12,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-29 10:01:12,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 296 transitions. [2020-10-29 10:01:12,764 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 296 transitions. Word has length 48 [2020-10-29 10:01:12,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:01:12,765 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 296 transitions. [2020-10-29 10:01:12,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 10:01:12,765 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 296 transitions. [2020-10-29 10:01:12,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 10:01:12,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:01:12,766 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:01:12,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 10:01:12,766 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:01:12,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:01:12,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1703924410, now seen corresponding path program 5 times [2020-10-29 10:01:12,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:01:12,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788715638] [2020-10-29 10:01:12,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:01:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:12,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:13,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:13,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 10:01:13,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:13,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 489 [2020-10-29 10:01:13,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:13,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:13,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 10:01:13,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 10:01:13,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 10:01:13,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:13,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:01:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:13,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:13,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:13,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:01:13,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:13,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:01:13,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:13,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:13,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:01:13,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:13,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:01:13,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:13,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 10:01:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:13,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:13,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:13,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:13,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:13,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:01:13,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:13,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:13,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:13,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:13,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:13,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:13,594 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 10:01:13,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788715638] [2020-10-29 10:01:13,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:01:13,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 10:01:13,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232484912] [2020-10-29 10:01:13,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 10:01:13,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:01:13,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 10:01:13,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-29 10:01:13,595 INFO L87 Difference]: Start difference. First operand 234 states and 296 transitions. Second operand 15 states. [2020-10-29 10:01:14,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:01:14,500 INFO L93 Difference]: Finished difference Result 308 states and 382 transitions. [2020-10-29 10:01:14,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 10:01:14,501 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 50 [2020-10-29 10:01:14,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:01:14,504 INFO L225 Difference]: With dead ends: 308 [2020-10-29 10:01:14,504 INFO L226 Difference]: Without dead ends: 305 [2020-10-29 10:01:14,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2020-10-29 10:01:14,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-10-29 10:01:14,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 277. [2020-10-29 10:01:14,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-29 10:01:14,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 350 transitions. [2020-10-29 10:01:14,560 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 350 transitions. Word has length 50 [2020-10-29 10:01:14,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:01:14,560 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 350 transitions. [2020-10-29 10:01:14,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 10:01:14,560 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 350 transitions. [2020-10-29 10:01:14,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 10:01:14,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:01:14,561 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:01:14,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 10:01:14,561 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:01:14,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:01:14,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1013378157, now seen corresponding path program 2 times [2020-10-29 10:01:14,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:01:14,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652334604] [2020-10-29 10:01:14,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:01:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:14,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:14,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:14,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:15,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:15,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:15,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:16,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:19,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:19,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:19,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:19,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:19,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 10:01:19,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 10:01:19,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5102 [2020-10-29 10:01:19,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:19,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:19,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 10:01:19,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 10:01:19,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 10:01:19,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:20,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:01:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:20,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:20,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:20,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:01:20,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:20,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:01:20,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:20,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:20,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:01:20,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:20,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:01:20,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:20,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 10:01:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:20,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:20,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:20,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:20,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:20,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:01:20,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:20,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:20,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:20,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:20,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:20,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:20,234 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 10:01:20,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652334604] [2020-10-29 10:01:20,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:01:20,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 10:01:20,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288375899] [2020-10-29 10:01:20,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 10:01:20,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:01:20,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 10:01:20,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-29 10:01:20,236 INFO L87 Difference]: Start difference. First operand 277 states and 350 transitions. Second operand 18 states. [2020-10-29 10:01:21,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:01:21,457 INFO L93 Difference]: Finished difference Result 310 states and 384 transitions. [2020-10-29 10:01:21,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 10:01:21,458 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 51 [2020-10-29 10:01:21,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:01:21,460 INFO L225 Difference]: With dead ends: 310 [2020-10-29 10:01:21,460 INFO L226 Difference]: Without dead ends: 269 [2020-10-29 10:01:21,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2020-10-29 10:01:21,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-29 10:01:21,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 243. [2020-10-29 10:01:21,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-29 10:01:21,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 315 transitions. [2020-10-29 10:01:21,496 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 315 transitions. Word has length 51 [2020-10-29 10:01:21,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:01:21,496 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 315 transitions. [2020-10-29 10:01:21,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 10:01:21,497 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 315 transitions. [2020-10-29 10:01:21,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 10:01:21,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:01:21,498 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:01:21,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 10:01:21,498 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:01:21,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:01:21,499 INFO L82 PathProgramCache]: Analyzing trace with hash 276402016, now seen corresponding path program 13 times [2020-10-29 10:01:21,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:01:21,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341254128] [2020-10-29 10:01:21,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:01:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:21,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:21,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:21,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:22,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:24,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:24,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:24,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:25,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:26,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:26,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:26,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:26,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 10:01:26,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 10:01:26,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5180 [2020-10-29 10:01:26,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:26,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:26,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 10:01:26,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 10:01:26,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 10:01:26,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:26,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:01:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:26,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:26,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:26,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:01:26,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:26,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:01:26,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:26,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:01:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:01:26,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:27,006 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 10:01:27,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341254128] [2020-10-29 10:01:27,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:01:27,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 10:01:27,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909476151] [2020-10-29 10:01:27,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 10:01:27,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:01:27,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 10:01:27,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-29 10:01:27,008 INFO L87 Difference]: Start difference. First operand 243 states and 315 transitions. Second operand 16 states. [2020-10-29 10:01:29,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:01:29,658 INFO L93 Difference]: Finished difference Result 625 states and 806 transitions. [2020-10-29 10:01:29,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-29 10:01:29,659 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 51 [2020-10-29 10:01:29,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:01:29,663 INFO L225 Difference]: With dead ends: 625 [2020-10-29 10:01:29,663 INFO L226 Difference]: Without dead ends: 622 [2020-10-29 10:01:29,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=220, Invalid=2132, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 10:01:29,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2020-10-29 10:01:29,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 304. [2020-10-29 10:01:29,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-10-29 10:01:29,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 403 transitions. [2020-10-29 10:01:29,732 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 403 transitions. Word has length 51 [2020-10-29 10:01:29,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:01:29,732 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 403 transitions. [2020-10-29 10:01:29,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 10:01:29,732 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 403 transitions. [2020-10-29 10:01:29,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 10:01:29,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:01:29,733 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:01:29,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 10:01:29,734 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:01:29,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:01:29,734 INFO L82 PathProgramCache]: Analyzing trace with hash -691581356, now seen corresponding path program 14 times [2020-10-29 10:01:29,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:01:29,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280217509] [2020-10-29 10:01:29,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:01:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:29,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:29,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:30,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:30,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:30,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:31,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:31,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:32,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:33,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:34,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:34,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:34,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:34,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 10:01:34,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 10:01:34,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 10:01:34,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:34,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:34,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 10:01:34,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 10:01:34,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 10:01:34,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:35,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:01:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:35,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:35,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:35,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:01:35,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:35,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:01:35,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:35,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:35,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:01:35,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:35,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:01:35,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:01:35,135 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-29 10:01:35,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280217509] [2020-10-29 10:01:35,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:01:35,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 10:01:35,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156299085] [2020-10-29 10:01:35,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 10:01:35,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:01:35,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 10:01:35,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-29 10:01:35,137 INFO L87 Difference]: Start difference. First operand 304 states and 403 transitions. Second operand 16 states. [2020-10-29 10:01:38,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:01:38,110 INFO L93 Difference]: Finished difference Result 703 states and 918 transitions. [2020-10-29 10:01:38,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-29 10:01:38,112 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 51 [2020-10-29 10:01:38,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:01:38,114 INFO L225 Difference]: With dead ends: 703 [2020-10-29 10:01:38,114 INFO L226 Difference]: Without dead ends: 505 [2020-10-29 10:01:38,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=333, Invalid=3089, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 10:01:38,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2020-10-29 10:01:38,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 304. [2020-10-29 10:01:38,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-10-29 10:01:38,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 391 transitions. [2020-10-29 10:01:38,185 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 391 transitions. Word has length 51 [2020-10-29 10:01:38,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:01:38,185 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 391 transitions. [2020-10-29 10:01:38,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 10:01:38,185 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 391 transitions. [2020-10-29 10:01:38,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 10:01:38,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:01:38,187 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:01:38,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 10:01:38,187 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:01:38,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:01:38,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1779231800, now seen corresponding path program 2 times [2020-10-29 10:01:38,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:01:38,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952454121] [2020-10-29 10:01:38,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:01:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:38,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:38,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:38,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:39,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:39,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:40,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:43,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:43,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 10:01:43,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 10:01:43,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4833 [2020-10-29 10:01:43,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:43,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:43,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 10:01:43,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 10:01:43,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 10:01:43,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:43,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:01:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:43,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:43,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:43,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:01:43,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:43,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:01:43,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:43,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:43,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:01:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:01:43,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:43,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 10:01:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:43,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:43,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:43,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:43,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:43,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:01:43,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:43,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:43,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:43,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:43,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:43,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:43,330 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 32 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 10:01:43,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952454121] [2020-10-29 10:01:43,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:01:43,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 10:01:43,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132873531] [2020-10-29 10:01:43,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 10:01:43,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:01:43,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 10:01:43,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-29 10:01:43,331 INFO L87 Difference]: Start difference. First operand 304 states and 391 transitions. Second operand 16 states. [2020-10-29 10:01:45,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:01:45,085 INFO L93 Difference]: Finished difference Result 442 states and 563 transitions. [2020-10-29 10:01:45,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 10:01:45,087 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-10-29 10:01:45,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:01:45,089 INFO L225 Difference]: With dead ends: 442 [2020-10-29 10:01:45,089 INFO L226 Difference]: Without dead ends: 439 [2020-10-29 10:01:45,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=202, Invalid=1438, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 10:01:45,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-10-29 10:01:45,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 330. [2020-10-29 10:01:45,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-10-29 10:01:45,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 423 transitions. [2020-10-29 10:01:45,168 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 423 transitions. Word has length 53 [2020-10-29 10:01:45,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:01:45,169 INFO L481 AbstractCegarLoop]: Abstraction has 330 states and 423 transitions. [2020-10-29 10:01:45,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 10:01:45,169 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 423 transitions. [2020-10-29 10:01:45,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 10:01:45,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:01:45,170 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:01:45,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 10:01:45,171 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:01:45,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:01:45,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1492588478, now seen corresponding path program 3 times [2020-10-29 10:01:45,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:01:45,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690045988] [2020-10-29 10:01:45,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:01:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:45,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:45,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:45,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 10:01:45,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:45,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-10-29 10:01:45,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:45,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:45,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 10:01:45,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 10:01:45,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 10:01:45,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:46,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:01:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:46,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:46,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:46,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:01:46,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:46,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:01:46,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:46,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:46,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:01:46,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:46,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:01:46,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:46,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 10:01:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:46,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:46,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:46,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:46,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:46,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:01:46,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:46,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:46,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:46,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:46,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:46,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:46,047 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 10:01:46,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690045988] [2020-10-29 10:01:46,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:01:46,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 10:01:46,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965511898] [2020-10-29 10:01:46,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 10:01:46,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:01:46,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 10:01:46,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-29 10:01:46,048 INFO L87 Difference]: Start difference. First operand 330 states and 423 transitions. Second operand 15 states. [2020-10-29 10:01:47,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:01:47,157 INFO L93 Difference]: Finished difference Result 388 states and 494 transitions. [2020-10-29 10:01:47,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 10:01:47,158 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2020-10-29 10:01:47,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:01:47,162 INFO L225 Difference]: With dead ends: 388 [2020-10-29 10:01:47,162 INFO L226 Difference]: Without dead ends: 385 [2020-10-29 10:01:47,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2020-10-29 10:01:47,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-10-29 10:01:47,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 368. [2020-10-29 10:01:47,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-10-29 10:01:47,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 472 transitions. [2020-10-29 10:01:47,243 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 472 transitions. Word has length 53 [2020-10-29 10:01:47,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:01:47,243 INFO L481 AbstractCegarLoop]: Abstraction has 368 states and 472 transitions. [2020-10-29 10:01:47,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 10:01:47,243 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 472 transitions. [2020-10-29 10:01:47,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 10:01:47,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:01:47,245 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:01:47,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 10:01:47,245 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:01:47,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:01:47,247 INFO L82 PathProgramCache]: Analyzing trace with hash -2058127074, now seen corresponding path program 15 times [2020-10-29 10:01:47,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:01:47,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660249744] [2020-10-29 10:01:47,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:01:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:47,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:47,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:47,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:49,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:49,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:49,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:50,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:52,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:52,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 10:01:52,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 10:01:52,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 10:01:52,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:52,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 10:01:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 10:01:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 10:01:52,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:52,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:01:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:52,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:52,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:52,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:01:52,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:52,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:01:52,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:52,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:52,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:01:52,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:52,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:01:52,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:52,647 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 7 proven. 76 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 10:01:52,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660249744] [2020-10-29 10:01:52,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:01:52,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 10:01:52,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107947631] [2020-10-29 10:01:52,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 10:01:52,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:01:52,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 10:01:52,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2020-10-29 10:01:52,649 INFO L87 Difference]: Start difference. First operand 368 states and 472 transitions. Second operand 17 states. [2020-10-29 10:01:58,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:01:58,556 INFO L93 Difference]: Finished difference Result 1413 states and 1834 transitions. [2020-10-29 10:01:58,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-10-29 10:01:58,557 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2020-10-29 10:01:58,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:01:58,562 INFO L225 Difference]: With dead ends: 1413 [2020-10-29 10:01:58,562 INFO L226 Difference]: Without dead ends: 1356 [2020-10-29 10:01:58,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3406 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=992, Invalid=8710, Unknown=0, NotChecked=0, Total=9702 [2020-10-29 10:01:58,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2020-10-29 10:01:58,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 722. [2020-10-29 10:01:58,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2020-10-29 10:01:58,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 949 transitions. [2020-10-29 10:01:58,745 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 949 transitions. Word has length 54 [2020-10-29 10:01:58,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:01:58,748 INFO L481 AbstractCegarLoop]: Abstraction has 722 states and 949 transitions. [2020-10-29 10:01:58,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 10:01:58,748 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 949 transitions. [2020-10-29 10:01:58,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 10:01:58,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:01:58,750 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:01:58,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 10:01:58,750 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:01:58,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:01:58,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1634692171, now seen corresponding path program 16 times [2020-10-29 10:01:58,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:01:58,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608339797] [2020-10-29 10:01:58,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:01:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:58,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:58,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:59,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:59,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:59,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:59,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:59,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:00,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:00,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:00,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:01,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:01,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:03,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:03,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:03,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:03,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 10:02:03,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 10:02:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 10:02:03,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:03,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 10:02:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 10:02:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 10:02:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:04,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:02:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:04,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:04,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:04,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:02:04,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:02:04,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:02:04,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:04,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:04,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:02:04,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:02:04,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:02:04,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:04,077 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 25 proven. 49 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 10:02:04,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608339797] [2020-10-29 10:02:04,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:02:04,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 10:02:04,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683138108] [2020-10-29 10:02:04,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 10:02:04,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:02:04,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 10:02:04,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-29 10:02:04,078 INFO L87 Difference]: Start difference. First operand 722 states and 949 transitions. Second operand 13 states. [2020-10-29 10:02:04,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:02:04,702 INFO L93 Difference]: Finished difference Result 974 states and 1267 transitions. [2020-10-29 10:02:04,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 10:02:04,703 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-10-29 10:02:04,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:02:04,706 INFO L225 Difference]: With dead ends: 974 [2020-10-29 10:02:04,706 INFO L226 Difference]: Without dead ends: 671 [2020-10-29 10:02:04,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-10-29 10:02:04,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2020-10-29 10:02:04,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 486. [2020-10-29 10:02:04,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-10-29 10:02:04,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 620 transitions. [2020-10-29 10:02:04,824 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 620 transitions. Word has length 54 [2020-10-29 10:02:04,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:02:04,824 INFO L481 AbstractCegarLoop]: Abstraction has 486 states and 620 transitions. [2020-10-29 10:02:04,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 10:02:04,824 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 620 transitions. [2020-10-29 10:02:04,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 10:02:04,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:02:04,826 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:02:04,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 10:02:04,826 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:02:04,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:02:04,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1006208518, now seen corresponding path program 4 times [2020-10-29 10:02:04,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:02:04,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546326536] [2020-10-29 10:02:04,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:02:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:04,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:05,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:05,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:05,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:05,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:06,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:07,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:07,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:08,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:09,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:09,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 10:02:09,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 10:02:09,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 10:02:09,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:09,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:09,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 10:02:09,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 10:02:09,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 10:02:09,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:10,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:02:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:10,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:10,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:10,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:02:10,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:02:10,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:02:10,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:10,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:10,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:02:10,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:02:10,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:02:10,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:10,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 10:02:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:10,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:10,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:10,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:02:10,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:02:10,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:02:10,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:10,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:02:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:02:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:02:10,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:10,304 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 10:02:10,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546326536] [2020-10-29 10:02:10,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:02:10,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 10:02:10,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352784853] [2020-10-29 10:02:10,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 10:02:10,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:02:10,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 10:02:10,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-29 10:02:10,307 INFO L87 Difference]: Start difference. First operand 486 states and 620 transitions. Second operand 16 states. [2020-10-29 10:02:12,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:02:12,504 INFO L93 Difference]: Finished difference Result 666 states and 838 transitions. [2020-10-29 10:02:12,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 10:02:12,505 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 56 [2020-10-29 10:02:12,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:02:12,509 INFO L225 Difference]: With dead ends: 666 [2020-10-29 10:02:12,509 INFO L226 Difference]: Without dead ends: 663 [2020-10-29 10:02:12,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=161, Invalid=1321, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 10:02:12,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2020-10-29 10:02:12,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 492. [2020-10-29 10:02:12,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2020-10-29 10:02:12,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 628 transitions. [2020-10-29 10:02:12,632 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 628 transitions. Word has length 56 [2020-10-29 10:02:12,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:02:12,633 INFO L481 AbstractCegarLoop]: Abstraction has 492 states and 628 transitions. [2020-10-29 10:02:12,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 10:02:12,633 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 628 transitions. [2020-10-29 10:02:12,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 10:02:12,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:02:12,638 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:02:12,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 10:02:12,638 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:02:12,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:02:12,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1943854588, now seen corresponding path program 3 times [2020-10-29 10:02:12,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:02:12,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180706876] [2020-10-29 10:02:12,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:02:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:12,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:12,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:13,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:13,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:13,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:13,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:14,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:15,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:15,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:15,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:16,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking...