/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:06:47,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:06:47,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:06:47,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:06:47,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:06:47,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:06:47,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:06:47,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:06:47,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:06:47,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:06:47,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:06:47,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:06:47,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:06:47,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:06:47,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:06:47,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:06:47,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:06:47,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:06:47,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:06:47,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:06:47,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:06:47,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:06:47,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:06:47,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:06:47,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:06:47,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:06:47,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:06:47,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:06:47,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:06:47,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:06:47,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:06:47,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:06:47,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:06:47,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:06:47,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:06:47,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:06:47,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:06:47,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:06:47,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:06:47,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:06:47,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:06:47,287 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:06:47,348 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:06:47,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:06:47,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:06:47,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:06:47,353 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:06:47,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:06:47,354 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:06:47,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:06:47,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:06:47,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:06:47,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:06:47,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:06:47,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:06:47,357 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:06:47,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:06:47,357 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:06:47,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:06:47,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:06:47,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:06:47,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:06:47,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:06:47,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:06:47,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:06:47,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:06:47,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:06:47,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:06:47,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:06:47,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:06:47,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:06:47,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:06:47,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:06:47,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:06:47,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:06:47,878 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:06:47,879 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:06:47,880 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label29.c [2020-10-28 13:06:47,972 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b2eca9b6/d16ff28a200a40d9ac4ba3619b411f73/FLAGb461837f1 [2020-10-28 13:06:48,812 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:06:48,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label29.c [2020-10-28 13:06:48,851 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b2eca9b6/d16ff28a200a40d9ac4ba3619b411f73/FLAGb461837f1 [2020-10-28 13:06:48,979 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b2eca9b6/d16ff28a200a40d9ac4ba3619b411f73 [2020-10-28 13:06:48,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:06:48,990 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:06:48,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:06:48,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:06:48,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:06:48,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:06:48" (1/1) ... [2020-10-28 13:06:49,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c76db6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:06:48, skipping insertion in model container [2020-10-28 13:06:49,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:06:48" (1/1) ... [2020-10-28 13:06:49,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:06:49,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:06:49,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:06:49,945 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:06:50,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:06:50,263 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:06:50,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:06:50 WrapperNode [2020-10-28 13:06:50,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:06:50,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:06:50,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:06:50,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:06:50,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:06:50" (1/1) ... [2020-10-28 13:06:50,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:06:50" (1/1) ... [2020-10-28 13:06:50,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:06:50" (1/1) ... [2020-10-28 13:06:50,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:06:50" (1/1) ... [2020-10-28 13:06:50,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:06:50" (1/1) ... [2020-10-28 13:06:50,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:06:50" (1/1) ... [2020-10-28 13:06:50,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:06:50" (1/1) ... [2020-10-28 13:06:50,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:06:50,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:06:50,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:06:50,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:06:50,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:06:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:06:50,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:06:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:06:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:06:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:06:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:06:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:06:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:06:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:06:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:06:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:06:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:06:50,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:06:50,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:06:50,576 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:06:50,576 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:06:50,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:06:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:06:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:06:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:06:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:06:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:06:53,691 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:06:53,691 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:06:53,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:06:53 BoogieIcfgContainer [2020-10-28 13:06:53,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:06:53,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:06:53,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:06:53,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:06:53,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:06:48" (1/3) ... [2020-10-28 13:06:53,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6650cfcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:06:53, skipping insertion in model container [2020-10-28 13:06:53,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:06:50" (2/3) ... [2020-10-28 13:06:53,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6650cfcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:06:53, skipping insertion in model container [2020-10-28 13:06:53,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:06:53" (3/3) ... [2020-10-28 13:06:53,704 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label29.c [2020-10-28 13:06:53,716 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:06:53,722 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:06:53,736 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:06:53,766 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:06:53,767 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:06:53,767 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:06:53,767 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:06:53,767 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:06:53,767 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:06:53,768 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:06:53,768 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:06:53,795 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-28 13:06:53,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 13:06:53,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:06:53,803 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] [2020-10-28 13:06:53,803 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:06:53,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:06:53,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1910341919, now seen corresponding path program 1 times [2020-10-28 13:06:53,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:06:53,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311689935] [2020-10-28 13:06:53,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:06:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:54,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:54,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:54,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 13:06:54,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:54,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-10-28 13:06:54,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:54,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:54,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:06:54,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:06:54,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 13:06:54,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:06:54,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:06:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:54,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:54,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:54,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:06:54,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:54,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:06:54,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:54,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:54,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:06:54,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:54,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:06:54,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:06:54,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:06:54,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311689935] [2020-10-28 13:06:54,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:06:54,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:06:54,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609358022] [2020-10-28 13:06:54,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:06:54,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:06:54,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:06:54,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:06:54,812 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-28 13:07:00,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:07:00,934 INFO L93 Difference]: Finished difference Result 1204 states and 2170 transitions. [2020-10-28 13:07:00,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:07:00,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-28 13:07:00,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:07:00,958 INFO L225 Difference]: With dead ends: 1204 [2020-10-28 13:07:00,959 INFO L226 Difference]: Without dead ends: 698 [2020-10-28 13:07:00,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:07:00,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-28 13:07:01,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 692. [2020-10-28 13:07:01,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-28 13:07:01,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1013 transitions. [2020-10-28 13:07:01,097 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1013 transitions. Word has length 28 [2020-10-28 13:07:01,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:07:01,100 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1013 transitions. [2020-10-28 13:07:01,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:07:01,100 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1013 transitions. [2020-10-28 13:07:01,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 13:07:01,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:07:01,109 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 13:07:01,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:07:01,110 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:07:01,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:07:01,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1021432406, now seen corresponding path program 1 times [2020-10-28 13:07:01,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:07:01,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895031687] [2020-10-28 13:07:01,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:07:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:01,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:01,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:03,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:03,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 13:07:03,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:07:03,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1910 [2020-10-28 13:07:03,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:03,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:03,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:07:03,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:07:03,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:07:03,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:07:03,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:07:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:03,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:03,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:03,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:07:03,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:03,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:07:03,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:03,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:03,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:07:03,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:03,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:07:03,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:07:03,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:07:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:03,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:03,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:03,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:07:03,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:03,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-28 13:07:03,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:03,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:03,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:03,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:07:03,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:07:03,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:03,577 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:07:03,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895031687] [2020-10-28 13:07:03,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:07:03,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:07:03,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281683450] [2020-10-28 13:07:03,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:07:03,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:07:03,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:07:03,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:07:03,587 INFO L87 Difference]: Start difference. First operand 692 states and 1013 transitions. Second operand 7 states. [2020-10-28 13:07:10,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:07:10,525 INFO L93 Difference]: Finished difference Result 2044 states and 3011 transitions. [2020-10-28 13:07:10,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:07:10,527 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-28 13:07:10,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:07:10,537 INFO L225 Difference]: With dead ends: 2044 [2020-10-28 13:07:10,537 INFO L226 Difference]: Without dead ends: 1358 [2020-10-28 13:07:10,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:07:10,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2020-10-28 13:07:10,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1327. [2020-10-28 13:07:10,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1327 states. [2020-10-28 13:07:10,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1720 transitions. [2020-10-28 13:07:10,619 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1720 transitions. Word has length 97 [2020-10-28 13:07:10,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:07:10,620 INFO L481 AbstractCegarLoop]: Abstraction has 1327 states and 1720 transitions. [2020-10-28 13:07:10,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:07:10,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1720 transitions. [2020-10-28 13:07:10,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-28 13:07:10,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:07:10,627 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:07:10,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:07:10,628 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:07:10,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:07:10,629 INFO L82 PathProgramCache]: Analyzing trace with hash -923909016, now seen corresponding path program 1 times [2020-10-28 13:07:10,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:07:10,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262100651] [2020-10-28 13:07:10,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:07:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:10,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:10,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:10,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:12,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:12,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:14,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:15,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:15,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-28 13:07:15,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:07:15,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 13:07:15,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:15,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:15,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:07:15,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:07:15,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 13:07:15,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:15,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:07:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:15,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:15,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:15,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:07:15,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:15,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:07:15,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:15,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:07:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:07:15,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:15,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:07:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:15,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:16,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:16,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:07:16,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:16,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 13:07:16,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:16,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:16,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:07:16,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:16,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:07:16,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:16,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:07:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:16,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:16,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:16,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:16,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 13:07:16,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:07:16,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-28 13:07:16,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:16,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:16,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:16,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:07:16,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:07:16,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:07:16,482 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 94 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:07:16,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262100651] [2020-10-28 13:07:16,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:07:16,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:07:16,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969622085] [2020-10-28 13:07:16,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:07:16,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:07:16,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:07:16,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:07:16,487 INFO L87 Difference]: Start difference. First operand 1327 states and 1720 transitions. Second operand 6 states. [2020-10-28 13:07:23,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:07:23,445 INFO L93 Difference]: Finished difference Result 3319 states and 4445 transitions. [2020-10-28 13:07:23,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:07:23,447 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 202 [2020-10-28 13:07:23,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:07:23,463 INFO L225 Difference]: With dead ends: 3319 [2020-10-28 13:07:23,463 INFO L226 Difference]: Without dead ends: 1998 [2020-10-28 13:07:23,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:07:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2020-10-28 13:07:23,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1981. [2020-10-28 13:07:23,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2020-10-28 13:07:23,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 2466 transitions. [2020-10-28 13:07:23,546 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 2466 transitions. Word has length 202 [2020-10-28 13:07:23,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:07:23,551 INFO L481 AbstractCegarLoop]: Abstraction has 1981 states and 2466 transitions. [2020-10-28 13:07:23,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:07:23,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 2466 transitions. [2020-10-28 13:07:23,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-28 13:07:23,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:07:23,562 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:07:23,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:07:23,563 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:07:23,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:07:23,563 INFO L82 PathProgramCache]: Analyzing trace with hash 338972475, now seen corresponding path program 1 times [2020-10-28 13:07:23,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:07:23,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854158476] [2020-10-28 13:07:23,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:07:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:23,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:23,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:24,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:24,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:25,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:25,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:28,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:28,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-28 13:07:28,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:07:28,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4921 [2020-10-28 13:07:28,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:28,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:28,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:28,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:07:28,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:07:28,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:07:28,726 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:07:28,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:07:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:28,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:28,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:28,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:07:28,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:28,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:07:28,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:28,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:28,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:07:28,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:28,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:07:28,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:28,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:07:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:28,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:28,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:28,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:07:28,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:28,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 13:07:28,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:28,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:28,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:07:28,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:28,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:07:28,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:28,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:07:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:28,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:29,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:29,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 13:07:29,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:29,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-28 13:07:29,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:29,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:29,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:29,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:07:29,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:07:29,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:29,278 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:07:29,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854158476] [2020-10-28 13:07:29,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:07:29,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:07:29,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063454702] [2020-10-28 13:07:29,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:07:29,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:07:29,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:07:29,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:07:29,282 INFO L87 Difference]: Start difference. First operand 1981 states and 2466 transitions. Second operand 7 states. [2020-10-28 13:07:36,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:07:36,577 INFO L93 Difference]: Finished difference Result 5592 states and 7138 transitions. [2020-10-28 13:07:36,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:07:36,578 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-10-28 13:07:36,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:07:36,595 INFO L225 Difference]: With dead ends: 5592 [2020-10-28 13:07:36,595 INFO L226 Difference]: Without dead ends: 2967 [2020-10-28 13:07:36,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:07:36,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2020-10-28 13:07:36,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 2613. [2020-10-28 13:07:36,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2613 states. [2020-10-28 13:07:36,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 2985 transitions. [2020-10-28 13:07:36,681 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 2985 transitions. Word has length 246 [2020-10-28 13:07:36,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:07:36,682 INFO L481 AbstractCegarLoop]: Abstraction has 2613 states and 2985 transitions. [2020-10-28 13:07:36,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:07:36,682 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 2985 transitions. [2020-10-28 13:07:36,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-28 13:07:36,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:07:36,688 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:07:36,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:07:36,688 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:07:36,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:07:36,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1597690009, now seen corresponding path program 1 times [2020-10-28 13:07:36,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:07:36,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942679703] [2020-10-28 13:07:36,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:07:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:36,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:36,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:38,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:41,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:41,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-28 13:07:41,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:07:41,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4544 [2020-10-28 13:07:41,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:41,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:41,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:07:41,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:07:41,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 13:07:41,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:41,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:07:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:41,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:41,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:41,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:07:41,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:41,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:07:41,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:41,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:41,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:07:41,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:41,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:07:41,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:41,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:07:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:41,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:42,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:42,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:07:42,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:42,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 545 [2020-10-28 13:07:42,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:42,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:42,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:42,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:07:42,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:07:42,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:07:42,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 13:07:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:42,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:42,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:42,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 13:07:42,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:42,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:07:42,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:42,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:42,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:07:42,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-28 13:07:42,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:07:42,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 40 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:07:42,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942679703] [2020-10-28 13:07:42,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:07:42,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:07:42,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838485442] [2020-10-28 13:07:42,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:07:42,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:07:42,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:07:42,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:07:42,699 INFO L87 Difference]: Start difference. First operand 2613 states and 2985 transitions. Second operand 7 states. [2020-10-28 13:07:47,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:07:47,945 INFO L93 Difference]: Finished difference Result 5600 states and 6378 transitions. [2020-10-28 13:07:47,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:07:47,951 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 313 [2020-10-28 13:07:47,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:07:47,965 INFO L225 Difference]: With dead ends: 5600 [2020-10-28 13:07:47,965 INFO L226 Difference]: Without dead ends: 2993 [2020-10-28 13:07:47,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:07:47,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2020-10-28 13:07:48,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 2923. [2020-10-28 13:07:48,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2923 states. [2020-10-28 13:07:48,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 3302 transitions. [2020-10-28 13:07:48,051 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 3302 transitions. Word has length 313 [2020-10-28 13:07:48,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:07:48,052 INFO L481 AbstractCegarLoop]: Abstraction has 2923 states and 3302 transitions. [2020-10-28 13:07:48,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:07:48,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 3302 transitions. [2020-10-28 13:07:48,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-28 13:07:48,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:07:48,060 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:07:48,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:07:48,060 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:07:48,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:07:48,061 INFO L82 PathProgramCache]: Analyzing trace with hash -494138142, now seen corresponding path program 1 times [2020-10-28 13:07:48,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:07:48,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152030954] [2020-10-28 13:07:48,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:07:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:48,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:48,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:50,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:50,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-28 13:07:50,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:07:50,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1991 [2020-10-28 13:07:50,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:50,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:50,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:07:50,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 13:07:50,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:50,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:07:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:50,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:50,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:50,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:07:50,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:50,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:07:50,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:50,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:07:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:07:50,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:50,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:07:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:50,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:50,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:50,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:07:50,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:50,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-28 13:07:50,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:50,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:50,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:07:50,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:50,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:07:50,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:50,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:07:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:50,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:51,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:51,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 13:07:51,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:51,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 13:07:51,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:51,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:51,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:51,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:07:51,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:07:51,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:51,282 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:07:51,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152030954] [2020-10-28 13:07:51,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:07:51,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:07:51,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177559012] [2020-10-28 13:07:51,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:07:51,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:07:51,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:07:51,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:07:51,285 INFO L87 Difference]: Start difference. First operand 2923 states and 3302 transitions. Second operand 8 states. [2020-10-28 13:07:59,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:07:59,539 INFO L93 Difference]: Finished difference Result 8143 states and 9721 transitions. [2020-10-28 13:07:59,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 13:07:59,543 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 387 [2020-10-28 13:07:59,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:07:59,572 INFO L225 Difference]: With dead ends: 8143 [2020-10-28 13:07:59,573 INFO L226 Difference]: Without dead ends: 5533 [2020-10-28 13:07:59,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 13:07:59,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5533 states. [2020-10-28 13:07:59,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5533 to 5508. [2020-10-28 13:07:59,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5508 states. [2020-10-28 13:07:59,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5508 states to 5508 states and 6387 transitions. [2020-10-28 13:07:59,734 INFO L78 Accepts]: Start accepts. Automaton has 5508 states and 6387 transitions. Word has length 387 [2020-10-28 13:07:59,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:07:59,735 INFO L481 AbstractCegarLoop]: Abstraction has 5508 states and 6387 transitions. [2020-10-28 13:07:59,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:07:59,735 INFO L276 IsEmpty]: Start isEmpty. Operand 5508 states and 6387 transitions. [2020-10-28 13:07:59,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-28 13:07:59,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:07:59,745 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:07:59,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:07:59,745 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:07:59,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:07:59,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1814432608, now seen corresponding path program 1 times [2020-10-28 13:07:59,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:07:59,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858150742] [2020-10-28 13:07:59,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:07:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:59,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:00,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:01,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:01,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 427 [2020-10-28 13:08:01,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:08:01,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1769 [2020-10-28 13:08:01,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:01,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:01,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:01,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:08:01,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:08:01,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:01,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:08:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:01,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:01,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:01,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:08:01,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:01,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:08:01,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:01,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:01,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:01,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:01,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:01,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:01,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:08:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:01,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:02,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:02,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:08:02,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:02,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-28 13:08:02,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:02,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:02,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:08:02,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:02,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:08:02,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:02,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:08:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:02,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:02,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:02,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:08:02,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:02,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 13:08:02,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:02,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:02,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:02,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:08:02,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:08:02,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:02,926 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:08:02,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858150742] [2020-10-28 13:08:02,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:08:02,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:08:02,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594169859] [2020-10-28 13:08:02,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:08:02,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:08:02,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:08:02,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:08:02,929 INFO L87 Difference]: Start difference. First operand 5508 states and 6387 transitions. Second operand 8 states. [2020-10-28 13:08:10,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:08:10,438 INFO L93 Difference]: Finished difference Result 11377 states and 13222 transitions. [2020-10-28 13:08:10,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:08:10,440 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 413 [2020-10-28 13:08:10,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:08:10,470 INFO L225 Difference]: With dead ends: 11377 [2020-10-28 13:08:10,470 INFO L226 Difference]: Without dead ends: 6182 [2020-10-28 13:08:10,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:08:10,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6182 states. [2020-10-28 13:08:10,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6182 to 6140. [2020-10-28 13:08:10,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6140 states. [2020-10-28 13:08:10,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6140 states to 6140 states and 7047 transitions. [2020-10-28 13:08:10,646 INFO L78 Accepts]: Start accepts. Automaton has 6140 states and 7047 transitions. Word has length 413 [2020-10-28 13:08:10,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:08:10,647 INFO L481 AbstractCegarLoop]: Abstraction has 6140 states and 7047 transitions. [2020-10-28 13:08:10,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:08:10,647 INFO L276 IsEmpty]: Start isEmpty. Operand 6140 states and 7047 transitions. [2020-10-28 13:08:10,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-10-28 13:08:10,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:08:10,658 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:08:10,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:08:10,658 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:08:10,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:08:10,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1123904296, now seen corresponding path program 1 times [2020-10-28 13:08:10,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:08:10,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532811505] [2020-10-28 13:08:10,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:08:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:10,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:11,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:11,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 439 [2020-10-28 13:08:11,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:11,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-10-28 13:08:11,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:11,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:11,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:11,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:08:11,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 13:08:11,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:11,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:08:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:11,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:11,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:11,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:08:11,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:11,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:08:11,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:11,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:11,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:11,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:11,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:11,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:11,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:08:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:11,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:11,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:11,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:08:11,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:11,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 13:08:11,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:11,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:11,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:11,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:11,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:11,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:11,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:08:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:11,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:11,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:11,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:08:11,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:11,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 13:08:11,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:11,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:11,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:08:11,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:11,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:08:11,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:12,064 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-28 13:08:12,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532811505] [2020-10-28 13:08:12,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:08:12,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:08:12,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196755613] [2020-10-28 13:08:12,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:08:12,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:08:12,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:08:12,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:08:12,069 INFO L87 Difference]: Start difference. First operand 6140 states and 7047 transitions. Second operand 5 states. [2020-10-28 13:08:20,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:08:20,035 INFO L93 Difference]: Finished difference Result 14564 states and 17134 transitions. [2020-10-28 13:08:20,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:08:20,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 425 [2020-10-28 13:08:20,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:08:20,085 INFO L225 Difference]: With dead ends: 14564 [2020-10-28 13:08:20,085 INFO L226 Difference]: Without dead ends: 8737 [2020-10-28 13:08:20,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:08:20,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8737 states. [2020-10-28 13:08:20,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8737 to 8724. [2020-10-28 13:08:20,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8724 states. [2020-10-28 13:08:20,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8724 states to 8724 states and 10272 transitions. [2020-10-28 13:08:20,317 INFO L78 Accepts]: Start accepts. Automaton has 8724 states and 10272 transitions. Word has length 425 [2020-10-28 13:08:20,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:08:20,319 INFO L481 AbstractCegarLoop]: Abstraction has 8724 states and 10272 transitions. [2020-10-28 13:08:20,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:08:20,319 INFO L276 IsEmpty]: Start isEmpty. Operand 8724 states and 10272 transitions. [2020-10-28 13:08:20,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-10-28 13:08:20,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:08:20,325 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:08:20,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:08:20,325 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:08:20,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:08:20,326 INFO L82 PathProgramCache]: Analyzing trace with hash 605460445, now seen corresponding path program 1 times [2020-10-28 13:08:20,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:08:20,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055196210] [2020-10-28 13:08:20,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:08:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:20,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:20,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:20,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:22,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:22,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:23,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:25,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:25,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 479 [2020-10-28 13:08:25,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:08:25,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-28 13:08:25,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:25,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:25,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:25,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 449 [2020-10-28 13:08:25,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 13:08:25,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:25,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:08:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:25,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:25,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:25,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:08:25,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:25,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:08:25,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:25,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:25,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:25,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:25,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:25,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:25,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:08:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:25,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:25,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:25,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 13:08:25,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:25,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 13:08:25,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:25,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:25,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:25,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:25,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:25,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:25,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-28 13:08:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:25,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:26,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:26,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:08:26,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:26,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-28 13:08:26,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:26,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:26,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:08:26,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:26,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-28 13:08:26,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2020-10-28 13:08:26,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055196210] [2020-10-28 13:08:26,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:08:26,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:08:26,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676128893] [2020-10-28 13:08:26,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:08:26,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:08:26,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:08:26,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:08:26,442 INFO L87 Difference]: Start difference. First operand 8724 states and 10272 transitions. Second operand 5 states. [2020-10-28 13:08:33,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:08:33,572 INFO L93 Difference]: Finished difference Result 10272 states and 11990 transitions. [2020-10-28 13:08:33,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:08:33,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 465 [2020-10-28 13:08:33,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:08:33,616 INFO L225 Difference]: With dead ends: 10272 [2020-10-28 13:08:33,617 INFO L226 Difference]: Without dead ends: 10269 [2020-10-28 13:08:33,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:08:33,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10269 states. [2020-10-28 13:08:33,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10269 to 9338. [2020-10-28 13:08:33,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-10-28 13:08:33,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 10976 transitions. [2020-10-28 13:08:33,850 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 10976 transitions. Word has length 465 [2020-10-28 13:08:33,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:08:33,851 INFO L481 AbstractCegarLoop]: Abstraction has 9338 states and 10976 transitions. [2020-10-28 13:08:33,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:08:33,851 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 10976 transitions. [2020-10-28 13:08:33,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-10-28 13:08:33,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:08:33,858 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:08:33,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:08:33,858 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:08:33,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:08:33,859 INFO L82 PathProgramCache]: Analyzing trace with hash -2073745691, now seen corresponding path program 1 times [2020-10-28 13:08:33,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:08:33,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234597495] [2020-10-28 13:08:33,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:08:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:34,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:34,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:35,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:36,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:36,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 517 [2020-10-28 13:08:36,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:08:36,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2635 [2020-10-28 13:08:36,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:36,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:36,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:36,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:08:36,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 13:08:36,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:08:36,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:08:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:36,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:36,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:36,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:08:36,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:36,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:08:36,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:36,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:36,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:36,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:36,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:36,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:36,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:08:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:36,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:36,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:36,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:08:36,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:36,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 13:08:36,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:36,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:36,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:36,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:36,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:36,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:37,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:08:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:37,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:37,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:37,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:08:37,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:37,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 13:08:37,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:37,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:08:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:08:37,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:37,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:08:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:37,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:37,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:37,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:08:37,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:37,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 13:08:37,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:37,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:37,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:37,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:08:37,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:08:37,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:37,607 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:08:37,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234597495] [2020-10-28 13:08:37,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:08:37,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:08:37,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35758548] [2020-10-28 13:08:37,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:08:37,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:08:37,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:08:37,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:08:37,609 INFO L87 Difference]: Start difference. First operand 9338 states and 10976 transitions. Second operand 7 states. [2020-10-28 13:08:43,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:08:43,922 INFO L93 Difference]: Finished difference Result 22138 states and 26844 transitions. [2020-10-28 13:08:43,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:08:43,929 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 501 [2020-10-28 13:08:43,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:08:43,990 INFO L225 Difference]: With dead ends: 22138 [2020-10-28 13:08:43,991 INFO L226 Difference]: Without dead ends: 13113 [2020-10-28 13:08:44,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:08:44,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13113 states. [2020-10-28 13:08:44,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13113 to 11837. [2020-10-28 13:08:44,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11837 states. [2020-10-28 13:08:44,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11837 states to 11837 states and 14313 transitions. [2020-10-28 13:08:44,311 INFO L78 Accepts]: Start accepts. Automaton has 11837 states and 14313 transitions. Word has length 501 [2020-10-28 13:08:44,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:08:44,312 INFO L481 AbstractCegarLoop]: Abstraction has 11837 states and 14313 transitions. [2020-10-28 13:08:44,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:08:44,312 INFO L276 IsEmpty]: Start isEmpty. Operand 11837 states and 14313 transitions. [2020-10-28 13:08:44,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2020-10-28 13:08:44,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:08:44,321 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:08:44,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:08:44,321 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:08:44,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:08:44,322 INFO L82 PathProgramCache]: Analyzing trace with hash 578453057, now seen corresponding path program 1 times [2020-10-28 13:08:44,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:08:44,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762126947] [2020-10-28 13:08:44,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:08:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:44,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:45,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:46,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:46,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 534 [2020-10-28 13:08:46,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:08:46,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2426 [2020-10-28 13:08:46,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:46,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:46,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:46,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:08:46,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:08:46,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:47,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:08:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:47,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:47,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:47,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:08:47,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:47,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:08:47,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:47,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:47,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:47,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:47,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:47,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:47,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:08:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:47,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:47,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:47,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:08:47,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:47,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 13:08:47,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:47,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:47,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:47,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:47,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:08:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:47,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:47,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:47,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:08:47,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:47,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 13:08:47,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:47,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:47,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:08:47,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:47,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:08:47,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:47,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:08:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:47,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:47,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:47,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 13:08:47,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:47,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-28 13:08:47,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:47,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:47,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:47,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:08:47,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 13:08:47,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:47,955 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 245 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:08:47,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762126947] [2020-10-28 13:08:47,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:08:47,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:08:47,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054872874] [2020-10-28 13:08:47,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:08:47,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:08:47,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:08:47,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:08:47,964 INFO L87 Difference]: Start difference. First operand 11837 states and 14313 transitions. Second operand 7 states. [2020-10-28 13:08:56,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:08:56,379 INFO L93 Difference]: Finished difference Result 29762 states and 38291 transitions. [2020-10-28 13:08:56,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:08:56,381 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 518 [2020-10-28 13:08:56,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:08:56,448 INFO L225 Difference]: With dead ends: 29762 [2020-10-28 13:08:56,448 INFO L226 Difference]: Without dead ends: 17606 [2020-10-28 13:08:56,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:08:56,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17606 states. [2020-10-28 13:08:56,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17606 to 17162. [2020-10-28 13:08:56,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17162 states. [2020-10-28 13:08:56,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17162 states to 17162 states and 20510 transitions. [2020-10-28 13:08:56,939 INFO L78 Accepts]: Start accepts. Automaton has 17162 states and 20510 transitions. Word has length 518 [2020-10-28 13:08:56,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:08:56,940 INFO L481 AbstractCegarLoop]: Abstraction has 17162 states and 20510 transitions. [2020-10-28 13:08:56,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:08:56,940 INFO L276 IsEmpty]: Start isEmpty. Operand 17162 states and 20510 transitions. [2020-10-28 13:08:56,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2020-10-28 13:08:56,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:08:56,947 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:08:56,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:08:56,947 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:08:56,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:08:56,948 INFO L82 PathProgramCache]: Analyzing trace with hash -65920254, now seen corresponding path program 1 times [2020-10-28 13:08:56,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:08:56,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027965872] [2020-10-28 13:08:56,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:08:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:57,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:57,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:58,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:58,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 547 [2020-10-28 13:08:58,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:08:58,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1862 [2020-10-28 13:08:58,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:58,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:58,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:58,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:08:58,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 13:08:58,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:59,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:08:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:59,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:59,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:59,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:08:59,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:59,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:08:59,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:59,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:59,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:59,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:59,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:59,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:59,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:08:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:59,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:59,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:59,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:08:59,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:59,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 13:08:59,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:59,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:59,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:59,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:59,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:59,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:59,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:08:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:59,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:59,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:59,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:08:59,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:59,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 13:08:59,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:59,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:08:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:08:59,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:59,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:08:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:59,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:59,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:59,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 13:08:59,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:59,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 13:08:59,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:59,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:59,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:59,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:08:59,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 13:08:59,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:59,899 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:08:59,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027965872] [2020-10-28 13:08:59,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:08:59,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:08:59,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185944222] [2020-10-28 13:08:59,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:08:59,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:08:59,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:08:59,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:08:59,902 INFO L87 Difference]: Start difference. First operand 17162 states and 20510 transitions. Second operand 7 states. [2020-10-28 13:09:07,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:09:07,584 INFO L93 Difference]: Finished difference Result 38069 states and 46016 transitions. [2020-10-28 13:09:07,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:09:07,586 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 531 [2020-10-28 13:09:07,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:09:07,649 INFO L225 Difference]: With dead ends: 38069 [2020-10-28 13:09:07,649 INFO L226 Difference]: Without dead ends: 21220 [2020-10-28 13:09:07,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:09:07,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21220 states. [2020-10-28 13:09:08,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21220 to 20897. [2020-10-28 13:09:08,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20897 states. [2020-10-28 13:09:08,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20897 states to 20897 states and 24700 transitions. [2020-10-28 13:09:08,082 INFO L78 Accepts]: Start accepts. Automaton has 20897 states and 24700 transitions. Word has length 531 [2020-10-28 13:09:08,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:09:08,083 INFO L481 AbstractCegarLoop]: Abstraction has 20897 states and 24700 transitions. [2020-10-28 13:09:08,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:09:08,083 INFO L276 IsEmpty]: Start isEmpty. Operand 20897 states and 24700 transitions. [2020-10-28 13:09:08,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2020-10-28 13:09:08,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:09:08,092 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:09:08,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:09:08,092 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:09:08,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:09:08,093 INFO L82 PathProgramCache]: Analyzing trace with hash -480109412, now seen corresponding path program 1 times [2020-10-28 13:09:08,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:09:08,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440757470] [2020-10-28 13:09:08,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:09:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:08,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:08,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:11,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:13,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:13,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 590 [2020-10-28 13:09:13,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:09:13,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-28 13:09:13,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:13,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:13,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:13,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 560 [2020-10-28 13:09:13,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 13:09:13,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:13,552 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:09:13,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:09:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:13,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:13,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:13,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:09:13,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:13,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:09:13,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:13,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:13,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:13,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:13,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:13,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:13,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:09:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:13,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:13,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:13,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:09:13,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:13,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 13:09:13,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:13,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:13,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:13,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:13,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:13,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:13,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:09:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:13,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:13,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:13,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:09:13,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:13,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:09:13,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:13,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:13,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:13,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:13,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:13,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:13,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:09:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:13,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:13,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:13,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 13:09:13,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:13,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 13:09:13,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:13,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:13,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:09:13,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:13,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 13:09:13,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:14,203 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2020-10-28 13:09:14,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440757470] [2020-10-28 13:09:14,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:09:14,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:09:14,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181617776] [2020-10-28 13:09:14,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:09:14,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:09:14,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:09:14,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:09:14,205 INFO L87 Difference]: Start difference. First operand 20897 states and 24700 transitions. Second operand 5 states. [2020-10-28 13:09:20,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:09:20,772 INFO L93 Difference]: Finished difference Result 46497 states and 55264 transitions. [2020-10-28 13:09:20,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:09:20,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 574 [2020-10-28 13:09:20,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:09:20,864 INFO L225 Difference]: With dead ends: 46497 [2020-10-28 13:09:20,865 INFO L226 Difference]: Without dead ends: 25913 [2020-10-28 13:09:20,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:09:20,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25913 states. [2020-10-28 13:09:21,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25913 to 24049. [2020-10-28 13:09:21,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24049 states. [2020-10-28 13:09:21,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24049 states to 24049 states and 28496 transitions. [2020-10-28 13:09:21,413 INFO L78 Accepts]: Start accepts. Automaton has 24049 states and 28496 transitions. Word has length 574 [2020-10-28 13:09:21,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:09:21,414 INFO L481 AbstractCegarLoop]: Abstraction has 24049 states and 28496 transitions. [2020-10-28 13:09:21,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:09:21,414 INFO L276 IsEmpty]: Start isEmpty. Operand 24049 states and 28496 transitions. [2020-10-28 13:09:21,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2020-10-28 13:09:21,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:09:21,424 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:09:21,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:09:21,424 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:09:21,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:09:21,425 INFO L82 PathProgramCache]: Analyzing trace with hash -345350123, now seen corresponding path program 1 times [2020-10-28 13:09:21,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:09:21,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880623316] [2020-10-28 13:09:21,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:09:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:21,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:21,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:24,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:26,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:26,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 606 [2020-10-28 13:09:26,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:09:26,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4970 [2020-10-28 13:09:26,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:26,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:26,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:26,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 576 [2020-10-28 13:09:26,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 13:09:26,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:26,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:09:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:26,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:26,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:26,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:09:26,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:26,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:09:26,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:26,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:26,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:26,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:26,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:26,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:26,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:09:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:26,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:26,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:26,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:09:26,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:26,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 13:09:26,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:26,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:26,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:26,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:26,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:26,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:26,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:09:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:26,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:27,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:27,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:09:27,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:27,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 13:09:27,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:27,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:27,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:27,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:27,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:27,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:09:27,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:09:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:27,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:27,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:27,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 13:09:27,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:27,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 13:09:27,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:27,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:27,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:09:27,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:27,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-28 13:09:27,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:27,512 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2020-10-28 13:09:27,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880623316] [2020-10-28 13:09:27,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:09:27,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:09:27,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778167400] [2020-10-28 13:09:27,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:09:27,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:09:27,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:09:27,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:09:27,515 INFO L87 Difference]: Start difference. First operand 24049 states and 28496 transitions. Second operand 5 states. [2020-10-28 13:09:35,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:09:35,993 INFO L93 Difference]: Finished difference Result 47773 states and 56659 transitions. [2020-10-28 13:09:35,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:09:35,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 590 [2020-10-28 13:09:35,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:09:36,051 INFO L225 Difference]: With dead ends: 47773 [2020-10-28 13:09:36,051 INFO L226 Difference]: Without dead ends: 23722 [2020-10-28 13:09:36,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:09:36,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23722 states. [2020-10-28 13:09:36,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23722 to 22787. [2020-10-28 13:09:36,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22787 states. [2020-10-28 13:09:36,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22787 states to 22787 states and 25146 transitions. [2020-10-28 13:09:36,497 INFO L78 Accepts]: Start accepts. Automaton has 22787 states and 25146 transitions. Word has length 590 [2020-10-28 13:09:36,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:09:36,500 INFO L481 AbstractCegarLoop]: Abstraction has 22787 states and 25146 transitions. [2020-10-28 13:09:36,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:09:36,500 INFO L276 IsEmpty]: Start isEmpty. Operand 22787 states and 25146 transitions. [2020-10-28 13:09:36,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2020-10-28 13:09:36,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:09:36,514 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:09:36,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:09:36,514 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:09:36,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:09:36,515 INFO L82 PathProgramCache]: Analyzing trace with hash -312905174, now seen corresponding path program 1 times [2020-10-28 13:09:36,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:09:36,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661822872] [2020-10-28 13:09:36,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:09:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:36,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:37,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:37,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:41,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:41,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 681 [2020-10-28 13:09:41,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:09:41,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-28 13:09:41,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:41,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:41,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:41,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-28 13:09:41,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:09:41,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:41,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:09:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:41,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:41,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:41,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:09:41,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:41,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:09:41,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:41,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:41,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:41,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:41,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:41,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:42,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:09:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:42,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:42,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:42,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:09:42,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:42,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:09:42,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:42,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:42,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:42,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:09:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:42,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:42,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:42,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 13:09:42,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:42,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-28 13:09:42,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:42,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:42,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:09:42,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:42,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-28 13:09:42,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:42,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-28 13:09:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:42,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:42,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:42,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:09:42,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:42,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 13:09:42,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:42,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:42,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:42,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:09:42,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:09:42,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:42,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-10-28 13:09:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:42,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:42,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:42,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:09:42,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:42,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:09:42,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:42,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:42,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:42,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-28 13:09:42,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:42,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:43,112 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 247 proven. 75 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2020-10-28 13:09:43,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661822872] [2020-10-28 13:09:43,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:09:43,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:09:43,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918379481] [2020-10-28 13:09:43,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:09:43,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:09:43,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:09:43,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:09:43,115 INFO L87 Difference]: Start difference. First operand 22787 states and 25146 transitions. Second operand 7 states. [2020-10-28 13:09:47,114 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:09:52,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:09:52,807 INFO L93 Difference]: Finished difference Result 55162 states and 61235 transitions. [2020-10-28 13:09:52,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:09:52,809 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 663 [2020-10-28 13:09:52,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:09:52,893 INFO L225 Difference]: With dead ends: 55162 [2020-10-28 13:09:52,893 INFO L226 Difference]: Without dead ends: 32688 [2020-10-28 13:09:52,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:09:52,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32688 states. [2020-10-28 13:09:53,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32688 to 32046. [2020-10-28 13:09:53,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32046 states. [2020-10-28 13:09:53,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32046 states to 32046 states and 34921 transitions. [2020-10-28 13:09:53,540 INFO L78 Accepts]: Start accepts. Automaton has 32046 states and 34921 transitions. Word has length 663 [2020-10-28 13:09:53,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:09:53,541 INFO L481 AbstractCegarLoop]: Abstraction has 32046 states and 34921 transitions. [2020-10-28 13:09:53,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:09:53,541 INFO L276 IsEmpty]: Start isEmpty. Operand 32046 states and 34921 transitions. [2020-10-28 13:09:53,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2020-10-28 13:09:53,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:09:53,556 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:09:53,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:09:53,557 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:09:53,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:09:53,557 INFO L82 PathProgramCache]: Analyzing trace with hash -498995904, now seen corresponding path program 1 times [2020-10-28 13:09:53,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:09:53,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121749595] [2020-10-28 13:09:53,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:09:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:53,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:54,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:55,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:57,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:57,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 687 [2020-10-28 13:09:57,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:09:57,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3381 [2020-10-28 13:09:57,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:57,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:57,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:57,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 578 [2020-10-28 13:09:57,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:09:57,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:57,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:09:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:57,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:57,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:57,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:09:57,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:57,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:09:57,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:57,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:57,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:57,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:57,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:57,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:57,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:09:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:57,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:57,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:57,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:09:57,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:57,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 13:09:57,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:57,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:57,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:57,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:57,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:57,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:09:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:57,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:57,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:57,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 13:09:57,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:57,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:09:57,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:57,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:57,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:57,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:57,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:57,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:57,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-28 13:09:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:57,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:57,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:57,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:09:57,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:57,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 13:09:57,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:57,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:57,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:09:57,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:57,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:09:57,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:57,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-28 13:09:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:57,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:57,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:57,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:09:57,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:57,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 13:09:57,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:57,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:57,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:57,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:09:57,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:09:57,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:58,268 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 309 proven. 2 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2020-10-28 13:09:58,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121749595] [2020-10-28 13:09:58,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:09:58,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:09:58,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775960954] [2020-10-28 13:09:58,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:09:58,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:09:58,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:09:58,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:09:58,271 INFO L87 Difference]: Start difference. First operand 32046 states and 34921 transitions. Second operand 7 states. [2020-10-28 13:10:06,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:10:06,700 INFO L93 Difference]: Finished difference Result 65356 states and 71300 transitions. [2020-10-28 13:10:06,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:10:06,702 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 669 [2020-10-28 13:10:06,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:10:06,798 INFO L225 Difference]: With dead ends: 65356 [2020-10-28 13:10:06,799 INFO L226 Difference]: Without dead ends: 33623 [2020-10-28 13:10:06,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:10:06,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33623 states. [2020-10-28 13:10:07,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33623 to 32670. [2020-10-28 13:10:07,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32670 states. [2020-10-28 13:10:07,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32670 states to 32670 states and 35624 transitions. [2020-10-28 13:10:07,433 INFO L78 Accepts]: Start accepts. Automaton has 32670 states and 35624 transitions. Word has length 669 [2020-10-28 13:10:07,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:10:07,434 INFO L481 AbstractCegarLoop]: Abstraction has 32670 states and 35624 transitions. [2020-10-28 13:10:07,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:10:07,434 INFO L276 IsEmpty]: Start isEmpty. Operand 32670 states and 35624 transitions. [2020-10-28 13:10:07,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2020-10-28 13:10:07,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:10:07,448 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:10:07,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 13:10:07,448 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:10:07,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:10:07,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1613178378, now seen corresponding path program 1 times [2020-10-28 13:10:07,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:10:07,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344240280] [2020-10-28 13:10:07,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:10:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:07,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:08,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:10,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:10,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 693 [2020-10-28 13:10:10,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:10:10,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3008 [2020-10-28 13:10:10,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:10,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:10,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:10:10,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 663 [2020-10-28 13:10:10,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 13:10:10,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:11,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:10:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:11,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:11,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:11,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:10:11,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:11,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:10:11,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:11,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:11,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:11,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:11,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:11,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:11,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:10:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:11,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:11,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:11,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:10:11,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:11,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 13:10:11,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:11,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:11,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:11,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:11,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:11,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:11,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:10:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:11,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:11,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:11,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:10:11,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:11,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:10:11,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:11,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:11,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:11,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:11,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:11,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:11,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:10:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:11,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:11,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:11,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-28 13:10:11,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:11,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 13:10:11,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:11,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:11,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:11,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:11,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:11,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:11,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-28 13:10:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:11,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:11,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:11,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:10:11,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:11,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 13:10:11,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:11,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:11,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:10:11,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:11,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:10:11,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:12,058 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 85 proven. 4 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2020-10-28 13:10:12,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344240280] [2020-10-28 13:10:12,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:10:12,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:10:12,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850282759] [2020-10-28 13:10:12,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:10:12,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:10:12,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:10:12,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:10:12,061 INFO L87 Difference]: Start difference. First operand 32670 states and 35624 transitions. Second operand 5 states. [2020-10-28 13:10:19,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:10:19,672 INFO L93 Difference]: Finished difference Result 66264 states and 72225 transitions. [2020-10-28 13:10:19,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:10:19,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 675 [2020-10-28 13:10:19,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:10:19,761 INFO L225 Difference]: With dead ends: 66264 [2020-10-28 13:10:19,761 INFO L226 Difference]: Without dead ends: 33598 [2020-10-28 13:10:19,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:10:19,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33598 states. [2020-10-28 13:10:20,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33598 to 32975. [2020-10-28 13:10:20,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32975 states. [2020-10-28 13:10:20,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32975 states to 32975 states and 35908 transitions. [2020-10-28 13:10:20,627 INFO L78 Accepts]: Start accepts. Automaton has 32975 states and 35908 transitions. Word has length 675 [2020-10-28 13:10:20,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:10:20,628 INFO L481 AbstractCegarLoop]: Abstraction has 32975 states and 35908 transitions. [2020-10-28 13:10:20,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:10:20,628 INFO L276 IsEmpty]: Start isEmpty. Operand 32975 states and 35908 transitions. [2020-10-28 13:10:20,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2020-10-28 13:10:20,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:10:20,646 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:10:20,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 13:10:20,647 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:10:20,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:10:20,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1992215822, now seen corresponding path program 1 times [2020-10-28 13:10:20,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:10:20,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78267103] [2020-10-28 13:10:20,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:10:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:20,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:21,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:21,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 767 [2020-10-28 13:10:21,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:21,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1107 [2020-10-28 13:10:21,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:21,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:21,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:10:21,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 592 [2020-10-28 13:10:21,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-28 13:10:21,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:22,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:10:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:22,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:22,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:22,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:10:22,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:22,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:10:22,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:22,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:22,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:22,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:22,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:22,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:22,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:10:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:22,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:22,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:22,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:10:22,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:22,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 13:10:22,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:22,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:22,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:22,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:22,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:22,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:10:22,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:10:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:22,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:22,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:22,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 13:10:22,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:22,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:10:22,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:22,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:22,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:22,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-28 13:10:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:22,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:22,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:22,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 13:10:22,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:22,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 13:10:22,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:22,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:22,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:10:22,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:22,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 13:10:22,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:22,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2020-10-28 13:10:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:22,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:23,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:23,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 13:10:23,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:23,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-28 13:10:23,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:23,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:23,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:10:23,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:10:23,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 13:10:23,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:23,452 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 466 proven. 2 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2020-10-28 13:10:23,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78267103] [2020-10-28 13:10:23,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:10:23,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:10:23,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079015109] [2020-10-28 13:10:23,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:10:23,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:10:23,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:10:23,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:10:23,454 INFO L87 Difference]: Start difference. First operand 32975 states and 35908 transitions. Second operand 7 states.