/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:48:32,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:48:32,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:48:32,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:48:32,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:48:32,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:48:32,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:48:32,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:48:32,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:48:32,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:48:32,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:48:32,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:48:32,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:48:32,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:48:32,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:48:32,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:48:32,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:48:32,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:48:32,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:48:32,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:48:32,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:48:32,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:48:32,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:48:32,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:48:32,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:48:32,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:48:32,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:48:32,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:48:32,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:48:32,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:48:32,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:48:32,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:48:32,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:48:32,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:48:32,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:48:32,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:48:32,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:48:32,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:48:32,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:48:32,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:48:32,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:48:32,253 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:48:32,280 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:48:32,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:48:32,282 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:48:32,282 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:48:32,282 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:48:32,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:48:32,283 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:48:32,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:48:32,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:48:32,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:48:32,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:48:32,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:48:32,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:48:32,285 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:48:32,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:48:32,285 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:48:32,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:48:32,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:48:32,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:48:32,286 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:48:32,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:48:32,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:48:32,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:48:32,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:48:32,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:48:32,288 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:48:32,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:48:32,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:48:32,288 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:48:32,289 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:48:32,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:48:32,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:48:32,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:48:32,674 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:48:32,675 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:48:32,678 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label36.c [2020-10-29 07:48:32,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/428f511f6/5b751be09f41401e9a1f703c4c28ad82/FLAGf3a66fe1d [2020-10-29 07:48:33,680 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:48:33,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label36.c [2020-10-29 07:48:33,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/428f511f6/5b751be09f41401e9a1f703c4c28ad82/FLAGf3a66fe1d [2020-10-29 07:48:33,806 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/428f511f6/5b751be09f41401e9a1f703c4c28ad82 [2020-10-29 07:48:33,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:48:33,820 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:48:33,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:48:33,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:48:33,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:48:33,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:48:33" (1/1) ... [2020-10-29 07:48:33,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79ca7241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:33, skipping insertion in model container [2020-10-29 07:48:33,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:48:33" (1/1) ... [2020-10-29 07:48:33,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:48:33,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:48:35,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:48:35,026 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:48:35,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:48:35,411 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:48:35,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:35 WrapperNode [2020-10-29 07:48:35,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:48:35,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:48:35,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:48:35,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:48:35,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:35" (1/1) ... [2020-10-29 07:48:35,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:35" (1/1) ... [2020-10-29 07:48:35,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:35" (1/1) ... [2020-10-29 07:48:35,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:35" (1/1) ... [2020-10-29 07:48:35,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:35" (1/1) ... [2020-10-29 07:48:35,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:35" (1/1) ... [2020-10-29 07:48:35,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:35" (1/1) ... [2020-10-29 07:48:35,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:48:35,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:48:35,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:48:35,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:48:35,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:48:35,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:48:35,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:48:35,762 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:48:35,763 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:48:35,763 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:48:35,764 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:48:35,764 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:48:35,765 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:48:35,765 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:48:35,765 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:48:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:48:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:48:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:48:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:48:35,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:48:35,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:48:35,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:48:35,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:48:35,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:48:35,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:48:35,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:48:39,103 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:48:39,104 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:48:39,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:48:39 BoogieIcfgContainer [2020-10-29 07:48:39,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:48:39,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:48:39,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:48:39,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:48:39,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:48:33" (1/3) ... [2020-10-29 07:48:39,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f88aa68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:48:39, skipping insertion in model container [2020-10-29 07:48:39,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:35" (2/3) ... [2020-10-29 07:48:39,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f88aa68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:48:39, skipping insertion in model container [2020-10-29 07:48:39,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:48:39" (3/3) ... [2020-10-29 07:48:39,116 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label36.c [2020-10-29 07:48:39,130 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:48:39,136 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:48:39,151 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:48:39,183 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:48:39,183 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:48:39,183 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:48:39,184 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:48:39,184 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:48:39,184 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:48:39,184 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:48:39,184 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:48:39,212 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:48:39,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 07:48:39,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:39,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:48:39,224 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:39,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:39,232 INFO L82 PathProgramCache]: Analyzing trace with hash -2103356799, now seen corresponding path program 1 times [2020-10-29 07:48:39,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:39,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852606775] [2020-10-29 07:48:39,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:39,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:40,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:40,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 07:48:40,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:40,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-10-29 07:48:40,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:40,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:40,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:48:40,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:48:40,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 07:48:40,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:48:40,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:40,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:40,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:40,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:40,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:40,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:48:40,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:40,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:40,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:40,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:40,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:48:40,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:48:40,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:48:40,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852606775] [2020-10-29 07:48:40,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:48:40,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 07:48:40,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190750719] [2020-10-29 07:48:40,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:48:40,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:40,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:48:40,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:48:40,339 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 5 states. [2020-10-29 07:48:52,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:48:52,736 INFO L93 Difference]: Finished difference Result 1534 states and 2807 transitions. [2020-10-29 07:48:52,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:48:52,739 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-29 07:48:52,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:48:52,780 INFO L225 Difference]: With dead ends: 1534 [2020-10-29 07:48:52,781 INFO L226 Difference]: Without dead ends: 1025 [2020-10-29 07:48:52,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:48:52,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-10-29 07:48:52,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 1019. [2020-10-29 07:48:52,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1019 states. [2020-10-29 07:48:52,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1534 transitions. [2020-10-29 07:48:52,939 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1534 transitions. Word has length 68 [2020-10-29 07:48:52,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:48:52,940 INFO L481 AbstractCegarLoop]: Abstraction has 1019 states and 1534 transitions. [2020-10-29 07:48:52,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:48:52,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1534 transitions. [2020-10-29 07:48:52,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-29 07:48:52,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:52,958 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:48:52,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:48:52,958 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:52,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:52,960 INFO L82 PathProgramCache]: Analyzing trace with hash -619187269, now seen corresponding path program 1 times [2020-10-29 07:48:52,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:52,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874581866] [2020-10-29 07:48:52,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:53,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:53,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:54,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:54,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:54,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-29 07:48:54,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:48:54,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1738 [2020-10-29 07:48:54,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:54,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:54,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:48:54,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:48:54,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-29 07:48:54,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:48:54,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:54,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:54,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:54,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:54,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:54,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:48:54,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:54,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:54,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:54,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:54,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:48:54,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-29 07:48:54,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:48:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:55,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:55,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:55,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:55,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:48:55,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:48:55,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-29 07:48:55,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:55,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:55,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:55,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:48:55,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:48:55,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:48:55,432 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:48:55,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874581866] [2020-10-29 07:48:55,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:48:55,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:48:55,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987600718] [2020-10-29 07:48:55,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:48:55,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:55,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:48:55,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:48:55,443 INFO L87 Difference]: Start difference. First operand 1019 states and 1534 transitions. Second operand 7 states. [2020-10-29 07:49:05,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:49:05,397 INFO L93 Difference]: Finished difference Result 2995 states and 4551 transitions. [2020-10-29 07:49:05,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:49:05,398 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2020-10-29 07:49:05,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:49:05,418 INFO L225 Difference]: With dead ends: 2995 [2020-10-29 07:49:05,418 INFO L226 Difference]: Without dead ends: 1982 [2020-10-29 07:49:05,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:49:05,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2020-10-29 07:49:05,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1961. [2020-10-29 07:49:05,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1961 states. [2020-10-29 07:49:05,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2599 transitions. [2020-10-29 07:49:05,520 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2599 transitions. Word has length 147 [2020-10-29 07:49:05,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:49:05,523 INFO L481 AbstractCegarLoop]: Abstraction has 1961 states and 2599 transitions. [2020-10-29 07:49:05,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:49:05,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2599 transitions. [2020-10-29 07:49:05,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-29 07:49:05,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:05,536 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:49:05,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:49:05,536 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:05,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:05,537 INFO L82 PathProgramCache]: Analyzing trace with hash -474671864, now seen corresponding path program 1 times [2020-10-29 07:49:05,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:05,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115773481] [2020-10-29 07:49:05,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:49:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:05,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:05,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:06,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:06,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:06,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:08,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:10,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:10,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-29 07:49:10,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:49:10,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 07:49:10,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:10,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:10,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:49:10,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:49:10,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:49:10,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:10,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:49:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:10,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:10,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:10,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:49:10,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:10,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:49:10,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:10,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:10,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:10,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:10,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:49:10,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:10,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:49:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:10,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:11,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:11,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:49:11,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:11,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 07:49:11,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:11,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:49:11,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:11,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:49:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:11,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:11,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:11,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:49:11,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:11,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-29 07:49:11,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:11,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:11,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:11,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:11,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:49:11,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:49:11,794 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:49:11,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115773481] [2020-10-29 07:49:11,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:49:11,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:49:11,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088427263] [2020-10-29 07:49:11,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:49:11,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:11,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:49:11,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:49:11,806 INFO L87 Difference]: Start difference. First operand 1961 states and 2599 transitions. Second operand 8 states. [2020-10-29 07:49:22,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:49:22,672 INFO L93 Difference]: Finished difference Result 3948 states and 5630 transitions. [2020-10-29 07:49:22,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:49:22,675 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 242 [2020-10-29 07:49:22,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:49:22,694 INFO L225 Difference]: With dead ends: 3948 [2020-10-29 07:49:22,695 INFO L226 Difference]: Without dead ends: 2920 [2020-10-29 07:49:22,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:49:22,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-10-29 07:49:22,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 2896. [2020-10-29 07:49:22,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2896 states. [2020-10-29 07:49:22,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 3660 transitions. [2020-10-29 07:49:22,802 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 3660 transitions. Word has length 242 [2020-10-29 07:49:22,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:49:22,804 INFO L481 AbstractCegarLoop]: Abstraction has 2896 states and 3660 transitions. [2020-10-29 07:49:22,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:49:22,804 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 3660 transitions. [2020-10-29 07:49:22,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-10-29 07:49:22,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:22,817 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:49:22,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:49:22,817 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:22,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:22,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1572594656, now seen corresponding path program 1 times [2020-10-29 07:49:22,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:22,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998873997] [2020-10-29 07:49:22,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:49:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:23,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:23,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:23,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:27,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:27,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 443 [2020-10-29 07:49:27,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:49:27,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-29 07:49:27,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:27,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:27,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:49:27,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:49:27,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:49:27,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:49:28,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:49:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:28,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:28,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:28,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:49:28,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:28,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:49:28,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:28,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:28,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:28,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:28,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:49:28,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:49:28,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:49:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:28,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:28,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:28,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:49:28,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:28,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-10-29 07:49:28,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:28,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:28,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:28,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:28,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:49:28,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:49:29,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 07:49:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:29,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:29,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:29,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:49:29,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:29,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 07:49:29,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:29,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:29,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:49:29,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:49:29,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:49:29,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:29,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-29 07:49:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:29,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:29,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:29,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:49:29,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:29,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 07:49:29,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:29,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:29,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:49:29,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-29 07:49:29,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:49:29,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:30,097 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 180 proven. 149 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-29 07:49:30,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998873997] [2020-10-29 07:49:30,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:49:30,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:49:30,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792248320] [2020-10-29 07:49:30,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:49:30,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:30,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:49:30,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:49:30,101 INFO L87 Difference]: Start difference. First operand 2896 states and 3660 transitions. Second operand 7 states. [2020-10-29 07:49:42,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:49:42,613 INFO L93 Difference]: Finished difference Result 5553 states and 7181 transitions. [2020-10-29 07:49:42,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:49:42,614 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 427 [2020-10-29 07:49:42,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:49:42,634 INFO L225 Difference]: With dead ends: 5553 [2020-10-29 07:49:42,634 INFO L226 Difference]: Without dead ends: 2970 [2020-10-29 07:49:42,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:49:42,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-10-29 07:49:42,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 2910. [2020-10-29 07:49:42,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2910 states. [2020-10-29 07:49:42,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 3675 transitions. [2020-10-29 07:49:42,732 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 3675 transitions. Word has length 427 [2020-10-29 07:49:42,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:49:42,733 INFO L481 AbstractCegarLoop]: Abstraction has 2910 states and 3675 transitions. [2020-10-29 07:49:42,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:49:42,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 3675 transitions. [2020-10-29 07:49:42,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-10-29 07:49:42,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:42,749 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:49:42,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:49:42,750 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:42,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:42,751 INFO L82 PathProgramCache]: Analyzing trace with hash -71947223, now seen corresponding path program 1 times [2020-10-29 07:49:42,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:42,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715354938] [2020-10-29 07:49:42,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:49:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:43,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:43,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:44,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:47,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:47,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 517 [2020-10-29 07:49:47,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:49:47,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 07:49:47,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:47,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:47,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:47,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 366 [2020-10-29 07:49:47,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 07:49:47,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:48,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:49:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:48,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:48,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:48,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:49:48,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:48,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:49:48,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:48,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:48,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:49:48,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:48,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:49:48,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:48,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:49:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:48,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:48,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:48,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:49:48,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:48,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 07:49:48,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:48,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:48,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:49:48,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:48,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:49:48,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:48,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:49:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:48,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:48,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:48,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:49:48,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:48,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 07:49:48,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:48,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:48,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:48,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:48,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:49:48,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:49:48,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-29 07:49:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:48,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:48,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:48,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:49:48,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:48,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-29 07:49:48,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:48,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:48,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:48,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:48,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:49:48,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:49,255 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 337 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-29 07:49:49,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715354938] [2020-10-29 07:49:49,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:49:49,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:49:49,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596275940] [2020-10-29 07:49:49,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:49:49,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:49,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:49:49,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:49:49,258 INFO L87 Difference]: Start difference. First operand 2910 states and 3675 transitions. Second operand 7 states. [2020-10-29 07:50:02,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:50:02,910 INFO L93 Difference]: Finished difference Result 7089 states and 9242 transitions. [2020-10-29 07:50:02,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:50:02,914 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 501 [2020-10-29 07:50:02,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:50:02,935 INFO L225 Difference]: With dead ends: 7089 [2020-10-29 07:50:02,936 INFO L226 Difference]: Without dead ends: 4492 [2020-10-29 07:50:02,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:50:02,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4492 states. [2020-10-29 07:50:03,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4492 to 4475. [2020-10-29 07:50:03,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4475 states. [2020-10-29 07:50:03,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4475 states to 4475 states and 5417 transitions. [2020-10-29 07:50:03,052 INFO L78 Accepts]: Start accepts. Automaton has 4475 states and 5417 transitions. Word has length 501 [2020-10-29 07:50:03,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:50:03,053 INFO L481 AbstractCegarLoop]: Abstraction has 4475 states and 5417 transitions. [2020-10-29 07:50:03,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:50:03,053 INFO L276 IsEmpty]: Start isEmpty. Operand 4475 states and 5417 transitions. [2020-10-29 07:50:03,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2020-10-29 07:50:03,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:03,061 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:50:03,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:50:03,062 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:03,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:03,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1066292117, now seen corresponding path program 1 times [2020-10-29 07:50:03,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:03,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19691344] [2020-10-29 07:50:03,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:03,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:03,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:03,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:04,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:06,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:08,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:08,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 523 [2020-10-29 07:50:08,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:50:08,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-29 07:50:08,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:08,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:08,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:08,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:50:08,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:50:08,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:08,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:50:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:08,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:08,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:08,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:50:08,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:08,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:50:08,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:08,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:08,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:08,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:08,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:08,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:08,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:50:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:08,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:08,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:08,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:50:08,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:08,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-29 07:50:08,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:08,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:08,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:50:08,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:08,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:50:08,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:50:09,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:50:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:09,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:09,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:09,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:09,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:50:09,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:50:09,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-29 07:50:09,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:09,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:50:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 07:50:09,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:09,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-10-29 07:50:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:09,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:09,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:09,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:50:09,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:09,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 07:50:09,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:09,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:09,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:09,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-29 07:50:09,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:09,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:09,516 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 265 proven. 78 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-29 07:50:09,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19691344] [2020-10-29 07:50:09,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:50:09,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:50:09,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826387717] [2020-10-29 07:50:09,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:50:09,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:50:09,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:50:09,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:50:09,519 INFO L87 Difference]: Start difference. First operand 4475 states and 5417 transitions. Second operand 7 states. [2020-10-29 07:50:19,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:50:19,588 INFO L93 Difference]: Finished difference Result 9683 states and 12189 transitions. [2020-10-29 07:50:19,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:50:19,594 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 507 [2020-10-29 07:50:19,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:50:19,627 INFO L225 Difference]: With dead ends: 9683 [2020-10-29 07:50:19,627 INFO L226 Difference]: Without dead ends: 6759 [2020-10-29 07:50:19,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:50:19,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6759 states. [2020-10-29 07:50:19,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6759 to 6407. [2020-10-29 07:50:19,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6407 states. [2020-10-29 07:50:19,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6407 states to 6407 states and 7963 transitions. [2020-10-29 07:50:19,802 INFO L78 Accepts]: Start accepts. Automaton has 6407 states and 7963 transitions. Word has length 507 [2020-10-29 07:50:19,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:50:19,803 INFO L481 AbstractCegarLoop]: Abstraction has 6407 states and 7963 transitions. [2020-10-29 07:50:19,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:50:19,803 INFO L276 IsEmpty]: Start isEmpty. Operand 6407 states and 7963 transitions. [2020-10-29 07:50:19,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2020-10-29 07:50:19,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:19,813 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:50:19,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:50:19,813 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:19,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:19,814 INFO L82 PathProgramCache]: Analyzing trace with hash -256886829, now seen corresponding path program 1 times [2020-10-29 07:50:19,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:19,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921218754] [2020-10-29 07:50:19,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:19,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:20,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:21,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:21,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:24,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:24,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 523 [2020-10-29 07:50:24,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:50:24,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-29 07:50:24,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:24,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:24,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:50:24,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 371 [2020-10-29 07:50:24,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 07:50:24,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:25,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:50:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:25,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:25,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:25,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:50:25,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:25,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:50:25,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:25,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:25,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:25,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:25,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:25,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:25,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:50:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:25,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:25,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:25,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:50:25,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:25,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 07:50:25,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:25,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:25,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:25,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:25,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:25,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:25,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:50:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:25,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:25,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:25,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:50:25,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:25,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 07:50:25,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:25,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:50:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:50:25,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:25,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-10-29 07:50:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:25,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:25,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:25,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:50:25,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:25,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 07:50:25,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:25,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:25,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:25,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:50:25,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:50:25,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:25,852 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 274 proven. 61 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-29 07:50:25,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921218754] [2020-10-29 07:50:25,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:50:25,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:50:25,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151269215] [2020-10-29 07:50:25,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:50:25,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:50:25,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:50:25,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:50:25,857 INFO L87 Difference]: Start difference. First operand 6407 states and 7963 transitions. Second operand 6 states. [2020-10-29 07:50:38,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:50:38,287 INFO L93 Difference]: Finished difference Result 12103 states and 16649 transitions. [2020-10-29 07:50:38,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:50:38,289 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 507 [2020-10-29 07:50:38,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:50:38,340 INFO L225 Difference]: With dead ends: 12103 [2020-10-29 07:50:38,340 INFO L226 Difference]: Without dead ends: 9124 [2020-10-29 07:50:38,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:50:38,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9124 states. [2020-10-29 07:50:38,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9124 to 9039. [2020-10-29 07:50:38,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9039 states. [2020-10-29 07:50:38,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9039 states to 9039 states and 11521 transitions. [2020-10-29 07:50:38,638 INFO L78 Accepts]: Start accepts. Automaton has 9039 states and 11521 transitions. Word has length 507 [2020-10-29 07:50:38,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:50:38,640 INFO L481 AbstractCegarLoop]: Abstraction has 9039 states and 11521 transitions. [2020-10-29 07:50:38,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:50:38,640 INFO L276 IsEmpty]: Start isEmpty. Operand 9039 states and 11521 transitions. [2020-10-29 07:50:38,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2020-10-29 07:50:38,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:38,652 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:50:38,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:50:38,652 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:38,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:38,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1285282486, now seen corresponding path program 1 times [2020-10-29 07:50:38,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:38,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889065103] [2020-10-29 07:50:38,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:38,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:39,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:39,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:43,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:43,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 526 [2020-10-29 07:50:43,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:50:43,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-29 07:50:43,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:43,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:43,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:43,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:50:43,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 07:50:43,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:44,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:50:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:44,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:44,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:44,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:50:44,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:44,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:50:44,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:44,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:44,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:44,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:44,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:44,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:44,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:50:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:44,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:44,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:44,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:50:44,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:44,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-29 07:50:44,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:44,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:44,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:50:44,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:44,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:50:44,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:44,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:50:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:44,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:44,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:44,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:50:44,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:44,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 07:50:44,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:44,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:44,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:44,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:50:44,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 07:50:44,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:44,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-10-29 07:50:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:44,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:44,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:44,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 07:50:44,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:44,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 07:50:44,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:44,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:44,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:44,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-29 07:50:44,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:44,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:44,859 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 265 proven. 81 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-29 07:50:44,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889065103] [2020-10-29 07:50:44,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:50:44,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:50:44,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877141508] [2020-10-29 07:50:44,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:50:44,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:50:44,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:50:44,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:50:44,862 INFO L87 Difference]: Start difference. First operand 9039 states and 11521 transitions. Second operand 7 states. [2020-10-29 07:50:55,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:50:55,699 INFO L93 Difference]: Finished difference Result 19757 states and 26089 transitions. [2020-10-29 07:50:55,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:50:55,707 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 510 [2020-10-29 07:50:55,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:50:55,755 INFO L225 Difference]: With dead ends: 19757 [2020-10-29 07:50:55,755 INFO L226 Difference]: Without dead ends: 11338 [2020-10-29 07:50:55,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:50:55,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11338 states. [2020-10-29 07:50:56,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11338 to 11288. [2020-10-29 07:50:56,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11288 states. [2020-10-29 07:50:56,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11288 states to 11288 states and 14479 transitions. [2020-10-29 07:50:56,142 INFO L78 Accepts]: Start accepts. Automaton has 11288 states and 14479 transitions. Word has length 510 [2020-10-29 07:50:56,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:50:56,143 INFO L481 AbstractCegarLoop]: Abstraction has 11288 states and 14479 transitions. [2020-10-29 07:50:56,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:50:56,144 INFO L276 IsEmpty]: Start isEmpty. Operand 11288 states and 14479 transitions. [2020-10-29 07:50:56,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2020-10-29 07:50:56,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:56,158 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:50:56,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:50:56,158 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:56,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:56,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1259867268, now seen corresponding path program 1 times [2020-10-29 07:50:56,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:56,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447307212] [2020-10-29 07:50:56,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:56,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:56,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:56,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:56,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:58,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:58,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:01,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:01,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 549 [2020-10-29 07:51:01,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:51:01,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-29 07:51:01,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:01,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:01,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:01,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:51:01,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-29 07:51:01,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:01,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:01,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:01,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:01,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:01,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:01,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:51:01,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:01,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:01,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:01,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:01,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:01,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:01,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:01,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:01,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:01,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:51:01,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:01,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 07:51:01,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:01,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:01,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:01,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:01,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:51:01,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:01,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:51:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:01,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:02,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:02,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:51:02,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:02,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-29 07:51:02,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:02,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:02,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:02,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:02,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:51:02,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:02,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-29 07:51:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:02,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:02,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:02,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:02,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:51:02,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:51:02,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-29 07:51:02,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:02,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:02,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:02,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 07:51:02,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:51:02,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:02,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-10-29 07:51:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:02,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:02,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:02,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 07:51:02,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:02,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 07:51:02,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:02,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:02,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:02,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-29 07:51:02,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:02,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:03,027 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 344 proven. 160 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-10-29 07:51:03,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447307212] [2020-10-29 07:51:03,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:51:03,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:51:03,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608065074] [2020-10-29 07:51:03,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:51:03,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:03,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:51:03,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:51:03,040 INFO L87 Difference]: Start difference. First operand 11288 states and 14479 transitions. Second operand 8 states. [2020-10-29 07:51:30,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:30,747 INFO L93 Difference]: Finished difference Result 36744 states and 51519 transitions. [2020-10-29 07:51:30,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 07:51:30,749 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 531 [2020-10-29 07:51:30,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:30,976 INFO L225 Difference]: With dead ends: 36744 [2020-10-29 07:51:30,976 INFO L226 Difference]: Without dead ends: 24823 [2020-10-29 07:51:31,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2020-10-29 07:51:31,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24823 states. [2020-10-29 07:51:31,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24823 to 22203. [2020-10-29 07:51:31,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22203 states. [2020-10-29 07:51:31,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22203 states to 22203 states and 28097 transitions. [2020-10-29 07:51:31,792 INFO L78 Accepts]: Start accepts. Automaton has 22203 states and 28097 transitions. Word has length 531 [2020-10-29 07:51:31,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:31,792 INFO L481 AbstractCegarLoop]: Abstraction has 22203 states and 28097 transitions. [2020-10-29 07:51:31,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:51:31,793 INFO L276 IsEmpty]: Start isEmpty. Operand 22203 states and 28097 transitions. [2020-10-29 07:51:31,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2020-10-29 07:51:31,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:31,808 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:51:31,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:51:31,809 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:31,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:31,810 INFO L82 PathProgramCache]: Analyzing trace with hash 647913820, now seen corresponding path program 1 times [2020-10-29 07:51:31,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:31,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870848123] [2020-10-29 07:51:31,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:32,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:32,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:34,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:36,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:36,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 548 [2020-10-29 07:51:36,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:51:36,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 07:51:36,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:36,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:36,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:36,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:51:36,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:51:36,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:37,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:37,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:37,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:37,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:37,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:37,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:51:37,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:37,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:37,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:37,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:37,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:37,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:37,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:51:37,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:37,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-29 07:51:37,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:37,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:37,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:37,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:37,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:51:37,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:37,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:51:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:37,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:37,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:37,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:51:37,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:37,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 07:51:37,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:37,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:37,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:37,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:37,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:51:37,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:37,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:51:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:37,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:37,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:37,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:51:37,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:37,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:51:37,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:37,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:37,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:37,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-29 07:51:37,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:37,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:38,391 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 292 proven. 78 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-29 07:51:38,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870848123] [2020-10-29 07:51:38,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:51:38,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:51:38,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300953579] [2020-10-29 07:51:38,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:51:38,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:38,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:51:38,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:51:38,395 INFO L87 Difference]: Start difference. First operand 22203 states and 28097 transitions. Second operand 7 states. [2020-10-29 07:51:41,126 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:51:43,757 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:51:54,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:54,277 INFO L93 Difference]: Finished difference Result 45717 states and 58216 transitions. [2020-10-29 07:51:54,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:51:54,283 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 532 [2020-10-29 07:51:54,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:54,385 INFO L225 Difference]: With dead ends: 45717 [2020-10-29 07:51:54,385 INFO L226 Difference]: Without dead ends: 24138 [2020-10-29 07:51:54,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:51:54,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24138 states. [2020-10-29 07:51:55,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24138 to 23807. [2020-10-29 07:51:55,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23807 states. [2020-10-29 07:51:55,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23807 states to 23807 states and 30197 transitions. [2020-10-29 07:51:55,107 INFO L78 Accepts]: Start accepts. Automaton has 23807 states and 30197 transitions. Word has length 532 [2020-10-29 07:51:55,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:55,108 INFO L481 AbstractCegarLoop]: Abstraction has 23807 states and 30197 transitions. [2020-10-29 07:51:55,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:51:55,108 INFO L276 IsEmpty]: Start isEmpty. Operand 23807 states and 30197 transitions. [2020-10-29 07:51:55,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2020-10-29 07:51:55,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:55,121 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:51:55,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:51:55,121 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:55,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:55,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1152553188, now seen corresponding path program 1 times [2020-10-29 07:51:55,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:55,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23605573] [2020-10-29 07:51:55,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:55,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:56,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:57,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:57,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:57,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 560 [2020-10-29 07:51:57,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:51:57,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2527 [2020-10-29 07:51:57,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:57,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:57,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:51:57,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:51:57,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-29 07:51:57,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:58,062 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:51:58,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:58,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:58,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:58,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:58,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:58,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:51:58,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:58,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:58,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:58,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:58,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:58,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:58,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:58,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:58,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:58,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:51:58,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:58,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-29 07:51:58,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:58,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:58,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:58,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:58,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:58,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:58,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:51:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:58,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:58,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:58,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:51:58,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:58,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 07:51:58,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:58,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:58,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:58,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:58,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:51:58,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:58,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:51:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:58,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:58,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:58,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:51:58,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:58,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 07:51:58,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:58,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:58,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:58,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:58,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:51:58,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:59,015 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 274 proven. 61 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-29 07:51:59,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23605573] [2020-10-29 07:51:59,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:51:59,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:51:59,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870711095] [2020-10-29 07:51:59,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:51:59,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:59,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:51:59,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:51:59,017 INFO L87 Difference]: Start difference. First operand 23807 states and 30197 transitions. Second operand 6 states.