/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/Problem11_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:07:56,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:07:56,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:07:56,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:07:56,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:07:56,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:07:56,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:07:56,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:07:56,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:07:56,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:07:56,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:07:56,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:07:56,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:07:56,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:07:56,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:07:56,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:07:56,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:07:56,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:07:56,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:07:56,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:07:56,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:07:56,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:07:56,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:07:56,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:07:56,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:07:56,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:07:56,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:07:56,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:07:56,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:07:56,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:07:56,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:07:56,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:07:56,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:07:56,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:07:56,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:07:56,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:07:56,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:07:56,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:07:56,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:07:56,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:07:56,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:07:56,637 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 12:07:56,665 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:07:56,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:07:56,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:07:56,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:07:56,668 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:07:56,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:07:56,668 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:07:56,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:07:56,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:07:56,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:07:56,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:07:56,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:07:56,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:07:56,670 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:07:56,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:07:56,670 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:07:56,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:07:56,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:07:56,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:07:56,671 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:07:56,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:07:56,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:07:56,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:07:56,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:07:56,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:07:56,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:07:56,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:07:56,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:07:56,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:07:56,674 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:07:57,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:07:57,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:07:57,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:07:57,201 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:07:57,202 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:07:57,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label35.c [2020-10-28 12:07:57,282 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d1235281/36b764dbace442bb8e7804c916087c68/FLAG9d1444ab6 [2020-10-28 12:07:58,101 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:07:58,102 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label35.c [2020-10-28 12:07:58,119 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d1235281/36b764dbace442bb8e7804c916087c68/FLAG9d1444ab6 [2020-10-28 12:07:58,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d1235281/36b764dbace442bb8e7804c916087c68 [2020-10-28 12:07:58,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:07:58,290 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:07:58,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:07:58,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:07:58,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:07:58,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:07:58" (1/1) ... [2020-10-28 12:07:58,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29dba6a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:07:58, skipping insertion in model container [2020-10-28 12:07:58,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:07:58" (1/1) ... [2020-10-28 12:07:58,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:07:58,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:07:58,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:07:58,949 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:07:59,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:07:59,235 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:07:59,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:07:59 WrapperNode [2020-10-28 12:07:59,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:07:59,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:07:59,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:07:59,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:07:59,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:07:59" (1/1) ... [2020-10-28 12:07:59,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:07:59" (1/1) ... [2020-10-28 12:07:59,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:07:59" (1/1) ... [2020-10-28 12:07:59,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:07:59" (1/1) ... [2020-10-28 12:07:59,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:07:59" (1/1) ... [2020-10-28 12:07:59,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:07:59" (1/1) ... [2020-10-28 12:07:59,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:07:59" (1/1) ... [2020-10-28 12:07:59,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:07:59,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:07:59,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:07:59,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:07:59,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:07:59" (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 12:07:59,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:07:59,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:07:59,490 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:07:59,490 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:07:59,491 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:07:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:07:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:07:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:07:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:07:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:07:59,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:07:59,492 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:07:59,492 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:07:59,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:07:59,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:07:59,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:07:59,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:07:59,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:07:59,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:08:01,406 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:08:01,407 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:08:01,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:08:01 BoogieIcfgContainer [2020-10-28 12:08:01,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:08:01,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:08:01,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:08:01,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:08:01,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:07:58" (1/3) ... [2020-10-28 12:08:01,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@adf2875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:08:01, skipping insertion in model container [2020-10-28 12:08:01,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:07:59" (2/3) ... [2020-10-28 12:08:01,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@adf2875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:08:01, skipping insertion in model container [2020-10-28 12:08:01,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:08:01" (3/3) ... [2020-10-28 12:08:01,419 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label35.c [2020-10-28 12:08:01,431 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:08:01,437 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:08:01,452 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:08:01,484 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:08:01,485 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:08:01,485 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:08:01,485 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:08:01,485 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:08:01,485 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:08:01,485 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:08:01,486 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:08:01,512 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-28 12:08:01,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 12:08:01,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:01,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:08:01,524 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:01,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:01,531 INFO L82 PathProgramCache]: Analyzing trace with hash -277936506, now seen corresponding path program 1 times [2020-10-28 12:08:01,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:01,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307100610] [2020-10-28 12:08:01,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:01,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:02,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:02,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:08:02,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:02,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 633 [2020-10-28 12:08:02,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:02,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:02,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:08:02,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:08:02,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 12:08:02,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:08:02,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:02,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:02,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:02,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:02,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:02,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 12:08:02,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:02,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:02,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:02,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:02,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:08:02,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:08:02,714 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 12:08:02,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307100610] [2020-10-28 12:08:02,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:08:02,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:08:02,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049247181] [2020-10-28 12:08:02,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:08:02,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:02,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:08:02,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:08:02,749 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-28 12:08:05,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:05,771 INFO L93 Difference]: Finished difference Result 796 states and 1392 transitions. [2020-10-28 12:08:05,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:08:05,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-10-28 12:08:05,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:05,804 INFO L225 Difference]: With dead ends: 796 [2020-10-28 12:08:05,804 INFO L226 Difference]: Without dead ends: 435 [2020-10-28 12:08:05,818 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 12:08:05,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-28 12:08:05,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 431. [2020-10-28 12:08:05,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-10-28 12:08:05,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 619 transitions. [2020-10-28 12:08:05,924 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 619 transitions. Word has length 65 [2020-10-28 12:08:05,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:05,925 INFO L481 AbstractCegarLoop]: Abstraction has 431 states and 619 transitions. [2020-10-28 12:08:05,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:08:05,926 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 619 transitions. [2020-10-28 12:08:05,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-28 12:08:05,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:05,941 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 12:08:05,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:08:05,942 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:05,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:05,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1782822709, now seen corresponding path program 1 times [2020-10-28 12:08:05,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:05,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065271178] [2020-10-28 12:08:05,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:06,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:06,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:07,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:07,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:07,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:08:07,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:08:07,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1967 [2020-10-28 12:08:07,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:07,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:07,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:08:07,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:08:07,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:08:07,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:08:08,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:08,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:08,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:08,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:08,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:08,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 12:08:08,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:08,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:08,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:08,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:08,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:08:08,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:08:08,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:08,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:08,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:08,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:08:08,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:08,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-28 12:08:08,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:08,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:08,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:08,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:08,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:08:08,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:08:08,531 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:08:08,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065271178] [2020-10-28 12:08:08,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:08:08,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:08:08,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676226400] [2020-10-28 12:08:08,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:08:08,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:08,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:08:08,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:08:08,539 INFO L87 Difference]: Start difference. First operand 431 states and 619 transitions. Second operand 7 states. [2020-10-28 12:08:11,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:11,957 INFO L93 Difference]: Finished difference Result 1284 states and 1895 transitions. [2020-10-28 12:08:11,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:08:11,957 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-10-28 12:08:11,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:11,975 INFO L225 Difference]: With dead ends: 1284 [2020-10-28 12:08:11,975 INFO L226 Difference]: Without dead ends: 859 [2020-10-28 12:08:11,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:08:11,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-10-28 12:08:12,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 826. [2020-10-28 12:08:12,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 826 states. [2020-10-28 12:08:12,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1135 transitions. [2020-10-28 12:08:12,035 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1135 transitions. Word has length 137 [2020-10-28 12:08:12,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:12,036 INFO L481 AbstractCegarLoop]: Abstraction has 826 states and 1135 transitions. [2020-10-28 12:08:12,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:08:12,036 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1135 transitions. [2020-10-28 12:08:12,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-28 12:08:12,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:12,040 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 12:08:12,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:08:12,041 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:12,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:12,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1512292215, now seen corresponding path program 1 times [2020-10-28 12:08:12,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:12,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146993160] [2020-10-28 12:08:12,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:12,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:12,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:13,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:14,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:14,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:08:14,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:08:14,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2653 [2020-10-28 12:08:14,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:14,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:14,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:08:14,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:08:14,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:08:14,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:08:14,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:14,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:14,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:14,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:14,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:14,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:08:14,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:14,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:14,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:14,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:14,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:08:14,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:08:14,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:14,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:15,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:15,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:08:15,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:15,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-28 12:08:15,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:15,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:15,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:15,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:15,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:08:15,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:08:15,323 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:08:15,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146993160] [2020-10-28 12:08:15,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:08:15,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:08:15,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17924569] [2020-10-28 12:08:15,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:08:15,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:15,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:08:15,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:08:15,326 INFO L87 Difference]: Start difference. First operand 826 states and 1135 transitions. Second operand 7 states. [2020-10-28 12:08:18,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:18,512 INFO L93 Difference]: Finished difference Result 2059 states and 2789 transitions. [2020-10-28 12:08:18,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:08:18,514 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-10-28 12:08:18,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:18,527 INFO L225 Difference]: With dead ends: 2059 [2020-10-28 12:08:18,527 INFO L226 Difference]: Without dead ends: 1239 [2020-10-28 12:08:18,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:08:18,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2020-10-28 12:08:18,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1224. [2020-10-28 12:08:18,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1224 states. [2020-10-28 12:08:18,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1571 transitions. [2020-10-28 12:08:18,595 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1571 transitions. Word has length 138 [2020-10-28 12:08:18,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:18,597 INFO L481 AbstractCegarLoop]: Abstraction has 1224 states and 1571 transitions. [2020-10-28 12:08:18,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:08:18,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1571 transitions. [2020-10-28 12:08:18,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-28 12:08:18,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:18,613 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:08:18,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:08:18,613 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:18,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:18,615 INFO L82 PathProgramCache]: Analyzing trace with hash -977463726, now seen corresponding path program 1 times [2020-10-28 12:08:18,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:18,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258532940] [2020-10-28 12:08:18,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:18,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:19,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:19,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-28 12:08:19,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:19,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-10-28 12:08:19,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:19,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:19,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:19,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:08:19,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 12:08:19,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:19,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:19,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:19,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:19,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:19,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:19,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:08:19,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:19,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:19,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:19,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:19,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:19,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:08:19,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:19,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:19,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:19,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:08:19,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:19,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 12:08:19,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:19,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:19,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:19,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:19,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:08:19,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:08:19,624 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:08:19,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258532940] [2020-10-28 12:08:19,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:19,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:08:19,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42212123] [2020-10-28 12:08:19,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:08:19,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:19,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:08:19,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:08:19,643 INFO L87 Difference]: Start difference. First operand 1224 states and 1571 transitions. Second operand 6 states. [2020-10-28 12:08:23,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:23,653 INFO L93 Difference]: Finished difference Result 2873 states and 3938 transitions. [2020-10-28 12:08:23,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:08:23,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 196 [2020-10-28 12:08:23,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:23,667 INFO L225 Difference]: With dead ends: 2873 [2020-10-28 12:08:23,667 INFO L226 Difference]: Without dead ends: 2033 [2020-10-28 12:08:23,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:08:23,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2033 states. [2020-10-28 12:08:23,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2033 to 1813. [2020-10-28 12:08:23,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1813 states. [2020-10-28 12:08:23,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 2424 transitions. [2020-10-28 12:08:23,769 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 2424 transitions. Word has length 196 [2020-10-28 12:08:23,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:23,771 INFO L481 AbstractCegarLoop]: Abstraction has 1813 states and 2424 transitions. [2020-10-28 12:08:23,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:08:23,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 2424 transitions. [2020-10-28 12:08:23,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-28 12:08:23,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:23,779 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:08:23,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:08:23,779 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:23,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:23,780 INFO L82 PathProgramCache]: Analyzing trace with hash -178375326, now seen corresponding path program 1 times [2020-10-28 12:08:23,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:23,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260237922] [2020-10-28 12:08:23,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:23,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:24,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:25,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:25,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-28 12:08:25,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:08:25,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1595 [2020-10-28 12:08:25,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:25,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:25,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:25,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:08:25,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:08:25,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:25,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:25,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:25,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:25,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:25,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:25,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:08:25,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:25,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:25,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:25,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:25,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:25,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:25,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:08:25,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:25,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-28 12:08:25,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:25,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:25,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:25,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:25,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:08:25,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:25,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:08:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:25,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:26,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:26,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:08:26,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:26,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-28 12:08:26,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:26,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:26,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:26,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:26,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:08:26,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:08:26,579 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:08:26,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260237922] [2020-10-28 12:08:26,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:26,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:08:26,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746002363] [2020-10-28 12:08:26,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:08:26,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:26,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:08:26,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:08:26,582 INFO L87 Difference]: Start difference. First operand 1813 states and 2424 transitions. Second operand 7 states. [2020-10-28 12:08:30,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:30,125 INFO L93 Difference]: Finished difference Result 4463 states and 6273 transitions. [2020-10-28 12:08:30,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:08:30,128 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-10-28 12:08:30,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:30,150 INFO L225 Difference]: With dead ends: 4463 [2020-10-28 12:08:30,150 INFO L226 Difference]: Without dead ends: 3034 [2020-10-28 12:08:30,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:08:30,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3034 states. [2020-10-28 12:08:30,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3034 to 2816. [2020-10-28 12:08:30,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2816 states. [2020-10-28 12:08:30,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2816 states to 2816 states and 3669 transitions. [2020-10-28 12:08:30,283 INFO L78 Accepts]: Start accepts. Automaton has 2816 states and 3669 transitions. Word has length 275 [2020-10-28 12:08:30,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:30,284 INFO L481 AbstractCegarLoop]: Abstraction has 2816 states and 3669 transitions. [2020-10-28 12:08:30,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:08:30,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2816 states and 3669 transitions. [2020-10-28 12:08:30,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-28 12:08:30,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:30,291 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:08:30,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:08:30,292 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:30,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:30,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1124793910, now seen corresponding path program 1 times [2020-10-28 12:08:30,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:30,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703082156] [2020-10-28 12:08:30,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:30,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:30,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:32,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:32,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-28 12:08:32,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:08:32,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1745 [2020-10-28 12:08:32,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:32,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:32,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:32,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 12:08:32,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:08:32,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:32,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:32,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:32,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:32,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:32,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:32,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:08:32,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:32,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:32,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:32,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:32,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:32,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:32,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:32,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:32,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:32,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:08:32,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:32,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 12:08:32,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:32,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:32,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:32,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:32,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:08:32,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:32,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:08:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:32,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:32,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:32,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:08:32,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:32,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-28 12:08:32,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:32,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:32,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:32,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:32,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:08:32,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:32,890 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:08:32,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703082156] [2020-10-28 12:08:32,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:32,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:08:32,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521943120] [2020-10-28 12:08:32,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:08:32,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:32,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:08:32,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:08:32,893 INFO L87 Difference]: Start difference. First operand 2816 states and 3669 transitions. Second operand 7 states. [2020-10-28 12:08:37,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:37,624 INFO L93 Difference]: Finished difference Result 6655 states and 9162 transitions. [2020-10-28 12:08:37,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:08:37,625 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 285 [2020-10-28 12:08:37,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:37,652 INFO L225 Difference]: With dead ends: 6655 [2020-10-28 12:08:37,652 INFO L226 Difference]: Without dead ends: 4223 [2020-10-28 12:08:37,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 12:08:37,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4223 states. [2020-10-28 12:08:37,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4223 to 3816. [2020-10-28 12:08:37,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3816 states. [2020-10-28 12:08:37,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3816 states to 3816 states and 4876 transitions. [2020-10-28 12:08:37,802 INFO L78 Accepts]: Start accepts. Automaton has 3816 states and 4876 transitions. Word has length 285 [2020-10-28 12:08:37,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:37,803 INFO L481 AbstractCegarLoop]: Abstraction has 3816 states and 4876 transitions. [2020-10-28 12:08:37,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:08:37,803 INFO L276 IsEmpty]: Start isEmpty. Operand 3816 states and 4876 transitions. [2020-10-28 12:08:37,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-28 12:08:37,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:37,812 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:08:37,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:08:37,812 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:37,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:37,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1598574881, now seen corresponding path program 1 times [2020-10-28 12:08:37,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:37,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898560216] [2020-10-28 12:08:37,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:37,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:38,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:38,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:41,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:41,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-28 12:08:41,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:08:41,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3517 [2020-10-28 12:08:41,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:41,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 234 [2020-10-28 12:08:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-28 12:08:41,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:41,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:41,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:41,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:41,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:41,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:41,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:08:41,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:41,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:41,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:41,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:41,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:41,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:41,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:41,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:41,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:41,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:08:41,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:41,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 12:08:41,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:41,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:41,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:41,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:41,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:41,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:41,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:08:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:41,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:41,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:41,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 12:08:41,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:41,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 12:08:41,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:41,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:41,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:41,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:41,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:08:41,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:08:41,925 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-28 12:08:41,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898560216] [2020-10-28 12:08:41,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:41,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:08:41,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418267536] [2020-10-28 12:08:41,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:08:41,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:41,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:08:41,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:08:41,929 INFO L87 Difference]: Start difference. First operand 3816 states and 4876 transitions. Second operand 5 states. [2020-10-28 12:08:44,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:44,845 INFO L93 Difference]: Finished difference Result 8596 states and 11449 transitions. [2020-10-28 12:08:44,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:08:44,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 287 [2020-10-28 12:08:44,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:44,881 INFO L225 Difference]: With dead ends: 8596 [2020-10-28 12:08:44,882 INFO L226 Difference]: Without dead ends: 4782 [2020-10-28 12:08:44,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:08:44,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4782 states. [2020-10-28 12:08:45,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4782 to 4774. [2020-10-28 12:08:45,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4774 states. [2020-10-28 12:08:45,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4774 states to 4774 states and 6139 transitions. [2020-10-28 12:08:45,033 INFO L78 Accepts]: Start accepts. Automaton has 4774 states and 6139 transitions. Word has length 287 [2020-10-28 12:08:45,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:45,034 INFO L481 AbstractCegarLoop]: Abstraction has 4774 states and 6139 transitions. [2020-10-28 12:08:45,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:08:45,034 INFO L276 IsEmpty]: Start isEmpty. Operand 4774 states and 6139 transitions. [2020-10-28 12:08:45,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-28 12:08:45,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:45,045 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:08:45,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:08:45,045 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:45,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:45,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1059499432, now seen corresponding path program 1 times [2020-10-28 12:08:45,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:45,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566682087] [2020-10-28 12:08:45,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:45,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:45,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:46,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:46,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-28 12:08:46,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:08:46,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1559 [2020-10-28 12:08:46,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:46,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:46,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:46,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:08:46,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:08:46,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:46,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:46,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:46,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:46,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:46,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:46,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:08:46,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:46,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:46,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:46,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:46,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:46,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:08:46,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:46,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:47,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:47,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:08:47,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:47,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-28 12:08:47,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:47,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:47,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:47,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:47,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:08:47,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:08:47,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:08:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:47,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:47,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:47,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:08:47,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:47,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 12:08:47,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:47,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:47,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:47,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:47,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:08:47,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:08:47,670 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:08:47,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566682087] [2020-10-28 12:08:47,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:47,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:08:47,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148227991] [2020-10-28 12:08:47,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:08:47,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:47,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:08:47,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:08:47,673 INFO L87 Difference]: Start difference. First operand 4774 states and 6139 transitions. Second operand 7 states. [2020-10-28 12:08:51,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:51,485 INFO L93 Difference]: Finished difference Result 9996 states and 13021 transitions. [2020-10-28 12:08:51,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:08:51,486 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 306 [2020-10-28 12:08:51,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:51,520 INFO L225 Difference]: With dead ends: 9996 [2020-10-28 12:08:51,520 INFO L226 Difference]: Without dead ends: 5606 [2020-10-28 12:08:51,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:08:51,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5606 states. [2020-10-28 12:08:51,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5606 to 5377. [2020-10-28 12:08:51,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5377 states. [2020-10-28 12:08:51,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5377 states to 5377 states and 6850 transitions. [2020-10-28 12:08:51,707 INFO L78 Accepts]: Start accepts. Automaton has 5377 states and 6850 transitions. Word has length 306 [2020-10-28 12:08:51,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:51,708 INFO L481 AbstractCegarLoop]: Abstraction has 5377 states and 6850 transitions. [2020-10-28 12:08:51,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:08:51,708 INFO L276 IsEmpty]: Start isEmpty. Operand 5377 states and 6850 transitions. [2020-10-28 12:08:51,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-28 12:08:51,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:51,720 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:08:51,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:08:51,721 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:51,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:51,721 INFO L82 PathProgramCache]: Analyzing trace with hash 59325934, now seen corresponding path program 1 times [2020-10-28 12:08:51,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:51,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249175125] [2020-10-28 12:08:51,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:51,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:52,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:52,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-28 12:08:52,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:52,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-10-28 12:08:52,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:52,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-28 12:08:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-28 12:08:52,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:52,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:52,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:52,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:52,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:52,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:52,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:08:52,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:52,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:52,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:52,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:52,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:52,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:52,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:52,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:52,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:52,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:08:52,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:52,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 12:08:52,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:52,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:52,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:52,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:52,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:52,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:52,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:08:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:52,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:52,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:52,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:08:52,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:52,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 12:08:52,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:52,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:52,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:52,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:52,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 12:08:52,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:52,975 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-28 12:08:52,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249175125] [2020-10-28 12:08:52,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:52,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:08:52,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113185121] [2020-10-28 12:08:52,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:08:52,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:52,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:08:52,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:08:52,985 INFO L87 Difference]: Start difference. First operand 5377 states and 6850 transitions. Second operand 5 states. [2020-10-28 12:08:56,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:56,206 INFO L93 Difference]: Finished difference Result 12523 states and 16501 transitions. [2020-10-28 12:08:56,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:08:56,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2020-10-28 12:08:56,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:56,260 INFO L225 Difference]: With dead ends: 12523 [2020-10-28 12:08:56,260 INFO L226 Difference]: Without dead ends: 7530 [2020-10-28 12:08:56,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:08:56,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7530 states. [2020-10-28 12:08:56,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7530 to 7327. [2020-10-28 12:08:56,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7327 states. [2020-10-28 12:08:56,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7327 states to 7327 states and 9576 transitions. [2020-10-28 12:08:56,502 INFO L78 Accepts]: Start accepts. Automaton has 7327 states and 9576 transitions. Word has length 312 [2020-10-28 12:08:56,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:56,503 INFO L481 AbstractCegarLoop]: Abstraction has 7327 states and 9576 transitions. [2020-10-28 12:08:56,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:08:56,503 INFO L276 IsEmpty]: Start isEmpty. Operand 7327 states and 9576 transitions. [2020-10-28 12:08:56,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-28 12:08:56,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:56,517 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:08:56,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:08:56,517 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:56,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:56,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1710723325, now seen corresponding path program 1 times [2020-10-28 12:08:56,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:56,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553367964] [2020-10-28 12:08:56,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:56,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:56,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:57,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:57,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:59,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:01,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:01,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-10-28 12:09:01,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:09:01,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 12:09:01,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:01,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:01,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:09:01,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:09:01,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-28 12:09:01,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:01,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:01,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:01,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:01,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:01,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:01,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:09:01,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:01,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:01,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:01,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:01,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:01,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:09:01,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:01,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:01,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:01,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:09:01,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:01,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 12:09:01,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:01,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:01,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:01,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:01,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:09:01,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:01,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:09:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:02,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:02,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:02,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:02,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:09:02,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:09:02,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-28 12:09:02,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:02,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:02,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:02,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:02,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:09:02,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:02,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 12:09:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:02,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:02,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:02,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 12:09:02,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:02,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 12:09:02,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:02,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:02,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:02,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:09:02,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 12:09:02,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:02,526 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 307 proven. 4 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 12:09:02,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553367964] [2020-10-28 12:09:02,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:09:02,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:09:02,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857638730] [2020-10-28 12:09:02,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:09:02,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:02,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:09:02,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:09:02,529 INFO L87 Difference]: Start difference. First operand 7327 states and 9576 transitions. Second operand 7 states. [2020-10-28 12:09:05,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:05,726 INFO L93 Difference]: Finished difference Result 13753 states and 18619 transitions. [2020-10-28 12:09:05,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:09:05,727 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 336 [2020-10-28 12:09:05,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:05,753 INFO L225 Difference]: With dead ends: 13753 [2020-10-28 12:09:05,753 INFO L226 Difference]: Without dead ends: 6810 [2020-10-28 12:09:05,772 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 12:09:05,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6810 states. [2020-10-28 12:09:05,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6810 to 6152. [2020-10-28 12:09:05,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6152 states. [2020-10-28 12:09:05,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6152 states to 6152 states and 7624 transitions. [2020-10-28 12:09:05,939 INFO L78 Accepts]: Start accepts. Automaton has 6152 states and 7624 transitions. Word has length 336 [2020-10-28 12:09:05,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:05,939 INFO L481 AbstractCegarLoop]: Abstraction has 6152 states and 7624 transitions. [2020-10-28 12:09:05,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:09:05,940 INFO L276 IsEmpty]: Start isEmpty. Operand 6152 states and 7624 transitions. [2020-10-28 12:09:05,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-10-28 12:09:05,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:05,956 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:09:05,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:09:05,957 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:05,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:05,957 INFO L82 PathProgramCache]: Analyzing trace with hash 614405607, now seen corresponding path program 1 times [2020-10-28 12:09:05,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:05,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263769434] [2020-10-28 12:09:05,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:06,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:06,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:06,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:09,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:09,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-28 12:09:09,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:09:09,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3056 [2020-10-28 12:09:09,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:09,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:09,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:09,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-10-28 12:09:09,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:09:09,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:09,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:09,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:09,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:09,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:09,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:09,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:09:09,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:09,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:09,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:09,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:09,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:09,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:09,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:09:09,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:09,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 12:09:09,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:09,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:09,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:09,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:09,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:09,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:09,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:09:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:09,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:09,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:09,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:09:09,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:09,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 12:09:09,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:09,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:09,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:09,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:09,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 12:09:09,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:09,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-10-28 12:09:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:09,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:09,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:09,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:09:09,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:09,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 12:09:09,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:09,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:09,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:09,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:09:09,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:09:09,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:09,799 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 336 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-28 12:09:09,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263769434] [2020-10-28 12:09:09,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:09:09,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:09:09,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938502771] [2020-10-28 12:09:09,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:09:09,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:09,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:09:09,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:09:09,801 INFO L87 Difference]: Start difference. First operand 6152 states and 7624 transitions. Second operand 7 states. [2020-10-28 12:09:13,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:13,140 INFO L93 Difference]: Finished difference Result 12699 states and 15710 transitions. [2020-10-28 12:09:13,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:09:13,142 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 347 [2020-10-28 12:09:13,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:13,168 INFO L225 Difference]: With dead ends: 12699 [2020-10-28 12:09:13,168 INFO L226 Difference]: Without dead ends: 6931 [2020-10-28 12:09:13,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:09:13,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6931 states. [2020-10-28 12:09:13,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6931 to 6918. [2020-10-28 12:09:13,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6918 states. [2020-10-28 12:09:13,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6918 states to 6918 states and 8454 transitions. [2020-10-28 12:09:13,354 INFO L78 Accepts]: Start accepts. Automaton has 6918 states and 8454 transitions. Word has length 347 [2020-10-28 12:09:13,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:13,355 INFO L481 AbstractCegarLoop]: Abstraction has 6918 states and 8454 transitions. [2020-10-28 12:09:13,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:09:13,355 INFO L276 IsEmpty]: Start isEmpty. Operand 6918 states and 8454 transitions. [2020-10-28 12:09:13,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-28 12:09:13,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:13,371 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-10-28 12:09:13,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 12:09:13,372 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:13,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:13,372 INFO L82 PathProgramCache]: Analyzing trace with hash -249310495, now seen corresponding path program 1 times [2020-10-28 12:09:13,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:13,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400939157] [2020-10-28 12:09:13,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:13,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:13,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:13,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:16,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:16,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-28 12:09:16,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:09:16,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2636 [2020-10-28 12:09:16,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:16,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:16,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:16,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:09:16,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 12:09:16,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:16,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:16,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:16,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:16,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:16,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:16,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:09:16,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:16,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:16,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:16,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:16,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:16,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:16,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:16,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:16,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:16,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:09:16,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:16,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 12:09:16,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:16,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:16,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:16,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:16,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:16,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:16,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:09:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:16,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:16,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:16,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:09:16,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:16,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 12:09:16,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:16,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:16,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:16,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:16,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:09:16,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:16,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 12:09:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:16,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:16,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:16,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:09:16,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:16,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 12:09:16,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:16,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:16,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:16,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:09:16,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:09:16,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:16,807 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 343 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-28 12:09:16,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400939157] [2020-10-28 12:09:16,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:09:16,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:09:16,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79067743] [2020-10-28 12:09:16,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:09:16,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:16,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:09:16,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:09:16,809 INFO L87 Difference]: Start difference. First operand 6918 states and 8454 transitions. Second operand 7 states. [2020-10-28 12:09:21,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:21,305 INFO L93 Difference]: Finished difference Result 14630 states and 17914 transitions. [2020-10-28 12:09:21,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:09:21,307 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 354 [2020-10-28 12:09:21,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:21,345 INFO L225 Difference]: With dead ends: 14630 [2020-10-28 12:09:21,346 INFO L226 Difference]: Without dead ends: 8096 [2020-10-28 12:09:21,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:09:21,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8096 states. [2020-10-28 12:09:21,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8096 to 7490. [2020-10-28 12:09:21,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7490 states. [2020-10-28 12:09:21,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7490 states to 7490 states and 9075 transitions. [2020-10-28 12:09:21,539 INFO L78 Accepts]: Start accepts. Automaton has 7490 states and 9075 transitions. Word has length 354 [2020-10-28 12:09:21,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:21,540 INFO L481 AbstractCegarLoop]: Abstraction has 7490 states and 9075 transitions. [2020-10-28 12:09:21,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:09:21,540 INFO L276 IsEmpty]: Start isEmpty. Operand 7490 states and 9075 transitions. [2020-10-28 12:09:21,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-28 12:09:21,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:21,553 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:09:21,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 12:09:21,553 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:21,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:21,554 INFO L82 PathProgramCache]: Analyzing trace with hash -563005700, now seen corresponding path program 1 times [2020-10-28 12:09:21,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:21,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835336393] [2020-10-28 12:09:21,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:21,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:21,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:21,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:23,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:26,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:26,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-28 12:09:26,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:09:26,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-28 12:09:26,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:26,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:26,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:09:26,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-28 12:09:26,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:09:26,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:26,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:26,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:26,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:26,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:26,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:26,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:09:26,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:26,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:26,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:26,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:26,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:26,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:26,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:26,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:26,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:26,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:09:26,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:26,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 12:09:26,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:26,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:26,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:26,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:26,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:26,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:26,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:09:27,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:27,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:27,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:27,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 12:09:27,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:27,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 12:09:27,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:27,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:27,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:27,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:27,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 12:09:27,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:27,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-28 12:09:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:27,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:27,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:27,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:27,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:09:27,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:09:27,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 12:09:27,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:27,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:27,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:27,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:27,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:09:27,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:27,316 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 179 proven. 3 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2020-10-28 12:09:27,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835336393] [2020-10-28 12:09:27,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:09:27,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:09:27,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365334889] [2020-10-28 12:09:27,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:09:27,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:27,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:09:27,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:09:27,319 INFO L87 Difference]: Start difference. First operand 7490 states and 9075 transitions. Second operand 6 states. [2020-10-28 12:09:30,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:30,096 INFO L93 Difference]: Finished difference Result 16691 states and 20242 transitions. [2020-10-28 12:09:30,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:09:30,097 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 355 [2020-10-28 12:09:30,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:30,126 INFO L225 Difference]: With dead ends: 16691 [2020-10-28 12:09:30,127 INFO L226 Difference]: Without dead ends: 9585 [2020-10-28 12:09:30,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:09:30,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9585 states. [2020-10-28 12:09:30,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9585 to 7670. [2020-10-28 12:09:30,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7670 states. [2020-10-28 12:09:30,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7670 states to 7670 states and 9365 transitions. [2020-10-28 12:09:30,394 INFO L78 Accepts]: Start accepts. Automaton has 7670 states and 9365 transitions. Word has length 355 [2020-10-28 12:09:30,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:30,394 INFO L481 AbstractCegarLoop]: Abstraction has 7670 states and 9365 transitions. [2020-10-28 12:09:30,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:09:30,395 INFO L276 IsEmpty]: Start isEmpty. Operand 7670 states and 9365 transitions. [2020-10-28 12:09:30,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-10-28 12:09:30,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:30,406 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:09:30,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 12:09:30,407 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:30,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:30,407 INFO L82 PathProgramCache]: Analyzing trace with hash 803858431, now seen corresponding path program 1 times [2020-10-28 12:09:30,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:30,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271915912] [2020-10-28 12:09:30,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:30,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:30,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:31,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:31,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-28 12:09:31,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:09:31,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 762 [2020-10-28 12:09:31,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:31,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:31,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:31,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:09:31,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:09:31,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:31,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:31,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:31,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:31,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:31,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:31,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:09:31,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:31,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:31,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:31,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:31,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:31,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:31,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:31,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:31,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:31,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:09:31,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:31,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:09:31,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:31,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:31,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:31,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:31,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:31,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:31,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:09:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:31,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:31,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:31,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:09:31,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:31,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 12:09:31,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:31,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:31,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:31,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:31,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:09:31,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:31,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 12:09:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:31,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:31,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:31,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:09:31,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:31,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 12:09:31,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:31,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:31,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:31,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:09:31,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:09:31,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:31,895 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 348 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-28 12:09:31,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271915912] [2020-10-28 12:09:31,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:09:31,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:09:31,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839548269] [2020-10-28 12:09:31,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:09:31,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:31,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:09:31,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:09:31,897 INFO L87 Difference]: Start difference. First operand 7670 states and 9365 transitions. Second operand 7 states. [2020-10-28 12:09:36,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:36,532 INFO L93 Difference]: Finished difference Result 16282 states and 19939 transitions. [2020-10-28 12:09:36,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:09:36,533 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 359 [2020-10-28 12:09:36,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:36,560 INFO L225 Difference]: With dead ends: 16282 [2020-10-28 12:09:36,560 INFO L226 Difference]: Without dead ends: 8616 [2020-10-28 12:09:36,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:09:36,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8616 states. [2020-10-28 12:09:36,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8616 to 7098. [2020-10-28 12:09:36,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7098 states. [2020-10-28 12:09:36,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7098 states to 7098 states and 8709 transitions. [2020-10-28 12:09:36,749 INFO L78 Accepts]: Start accepts. Automaton has 7098 states and 8709 transitions. Word has length 359 [2020-10-28 12:09:36,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:36,750 INFO L481 AbstractCegarLoop]: Abstraction has 7098 states and 8709 transitions. [2020-10-28 12:09:36,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:09:36,750 INFO L276 IsEmpty]: Start isEmpty. Operand 7098 states and 8709 transitions. [2020-10-28 12:09:36,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-28 12:09:36,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:36,764 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:09:36,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 12:09:36,764 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:36,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:36,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1567481028, now seen corresponding path program 1 times [2020-10-28 12:09:36,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:36,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376829662] [2020-10-28 12:09:36,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:36,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:37,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:38,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:38,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-28 12:09:38,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:09:38,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1907 [2020-10-28 12:09:38,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:38,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:38,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:38,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-28 12:09:38,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:09:38,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:38,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:38,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:38,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:38,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:38,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:38,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:09:38,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:38,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:38,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:38,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:38,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:38,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:38,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:38,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:38,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:38,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:09:38,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:38,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:09:38,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:38,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:38,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:38,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:38,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:38,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:39,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:09:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:39,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:39,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:39,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 12:09:39,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:39,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 12:09:39,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:39,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:39,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:39,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:39,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 12:09:39,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:39,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-28 12:09:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:39,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:39,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:39,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:09:39,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:39,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 12:09:39,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:39,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:39,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:39,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:09:39,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:09:39,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:39,520 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-28 12:09:39,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376829662] [2020-10-28 12:09:39,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:09:39,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:09:39,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936778519] [2020-10-28 12:09:39,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:09:39,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:39,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:09:39,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:09:39,522 INFO L87 Difference]: Start difference. First operand 7098 states and 8709 transitions. Second operand 7 states. [2020-10-28 12:09:42,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:42,949 INFO L93 Difference]: Finished difference Result 14974 states and 18483 transitions. [2020-10-28 12:09:42,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:09:42,950 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 360 [2020-10-28 12:09:42,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:42,975 INFO L225 Difference]: With dead ends: 14974 [2020-10-28 12:09:42,975 INFO L226 Difference]: Without dead ends: 8070 [2020-10-28 12:09:42,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:09:42,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8070 states. [2020-10-28 12:09:43,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8070 to 7476. [2020-10-28 12:09:43,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7476 states. [2020-10-28 12:09:43,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7476 states to 7476 states and 9114 transitions. [2020-10-28 12:09:43,161 INFO L78 Accepts]: Start accepts. Automaton has 7476 states and 9114 transitions. Word has length 360 [2020-10-28 12:09:43,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:43,162 INFO L481 AbstractCegarLoop]: Abstraction has 7476 states and 9114 transitions. [2020-10-28 12:09:43,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:09:43,162 INFO L276 IsEmpty]: Start isEmpty. Operand 7476 states and 9114 transitions. [2020-10-28 12:09:43,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-28 12:09:43,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:43,175 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:09:43,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 12:09:43,177 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:43,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:43,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1289274289, now seen corresponding path program 1 times [2020-10-28 12:09:43,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:43,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763031906] [2020-10-28 12:09:43,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:43,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:43,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:44,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:44,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-10-28 12:09:44,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:09:44,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1507 [2020-10-28 12:09:44,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:44,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 217 [2020-10-28 12:09:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:09:44,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:44,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:44,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:44,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:44,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:44,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:44,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:09:44,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:44,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:44,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:44,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:44,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:44,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:44,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:09:44,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:44,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 12:09:44,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:44,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:44,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:44,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:44,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:44,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:45,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:09:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:45,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:45,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:45,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:09:45,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:45,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 12:09:45,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:45,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:45,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:45,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:45,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:09:45,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:45,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-28 12:09:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:45,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:45,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:45,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:09:45,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:45,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 12:09:45,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:45,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:45,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:45,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:09:45,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:09:45,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:45,432 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 353 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-28 12:09:45,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763031906] [2020-10-28 12:09:45,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:09:45,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:09:45,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498664487] [2020-10-28 12:09:45,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:09:45,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:45,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:09:45,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:09:45,435 INFO L87 Difference]: Start difference. First operand 7476 states and 9114 transitions. Second operand 7 states. [2020-10-28 12:09:48,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:48,365 INFO L93 Difference]: Finished difference Result 15366 states and 18784 transitions. [2020-10-28 12:09:48,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:09:48,366 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 364 [2020-10-28 12:09:48,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:48,388 INFO L225 Difference]: With dead ends: 15366 [2020-10-28 12:09:48,388 INFO L226 Difference]: Without dead ends: 8076 [2020-10-28 12:09:48,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:09:48,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8076 states. [2020-10-28 12:09:48,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8076 to 8052. [2020-10-28 12:09:48,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8052 states. [2020-10-28 12:09:48,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8052 states to 8052 states and 9740 transitions. [2020-10-28 12:09:48,582 INFO L78 Accepts]: Start accepts. Automaton has 8052 states and 9740 transitions. Word has length 364 [2020-10-28 12:09:48,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:48,583 INFO L481 AbstractCegarLoop]: Abstraction has 8052 states and 9740 transitions. [2020-10-28 12:09:48,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:09:48,583 INFO L276 IsEmpty]: Start isEmpty. Operand 8052 states and 9740 transitions. [2020-10-28 12:09:48,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-28 12:09:48,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:48,602 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:09:48,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 12:09:48,603 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:48,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:48,603 INFO L82 PathProgramCache]: Analyzing trace with hash -2054654761, now seen corresponding path program 1 times [2020-10-28 12:09:48,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:48,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650264454] [2020-10-28 12:09:48,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:48,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:49,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:49,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 387 [2020-10-28 12:09:49,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:49,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-10-28 12:09:49,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:49,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:49,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:49,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-28 12:09:49,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:09:49,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:49,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:49,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:49,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:49,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:49,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:49,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:09:49,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:49,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:49,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:49,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:49,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:49,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:49,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:49,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:49,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:49,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:09:49,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:49,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:09:49,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:49,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:49,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:49,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:49,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:49,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:49,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:09:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:49,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:49,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:49,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:09:49,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:49,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 12:09:49,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:49,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:49,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:49,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:49,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:09:49,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:49,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:09:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:49,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:49,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:49,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:09:49,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:49,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 12:09:49,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:49,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:49,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:49,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:09:49,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:09:49,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:49,968 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 350 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 12:09:49,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650264454] [2020-10-28 12:09:49,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:09:49,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:09:49,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944437281] [2020-10-28 12:09:49,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:09:49,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:49,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:09:49,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:09:49,970 INFO L87 Difference]: Start difference. First operand 8052 states and 9740 transitions. Second operand 8 states. [2020-10-28 12:09:54,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:54,725 INFO L93 Difference]: Finished difference Result 16919 states and 20758 transitions. [2020-10-28 12:09:54,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 12:09:54,726 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 371 [2020-10-28 12:09:54,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:54,748 INFO L225 Difference]: With dead ends: 16919 [2020-10-28 12:09:54,748 INFO L226 Difference]: Without dead ends: 9251 [2020-10-28 12:09:54,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:09:54,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9251 states. [2020-10-28 12:09:54,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9251 to 9214. [2020-10-28 12:09:54,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9214 states. [2020-10-28 12:09:54,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9214 states to 9214 states and 11283 transitions. [2020-10-28 12:09:54,953 INFO L78 Accepts]: Start accepts. Automaton has 9214 states and 11283 transitions. Word has length 371 [2020-10-28 12:09:54,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:54,954 INFO L481 AbstractCegarLoop]: Abstraction has 9214 states and 11283 transitions. [2020-10-28 12:09:54,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:09:54,954 INFO L276 IsEmpty]: Start isEmpty. Operand 9214 states and 11283 transitions. [2020-10-28 12:09:54,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-28 12:09:54,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:54,965 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:09:54,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 12:09:54,966 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:54,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:54,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1934979745, now seen corresponding path program 1 times [2020-10-28 12:09:54,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:54,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421233287] [2020-10-28 12:09:54,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:55,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:55,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:55,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-28 12:09:55,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:55,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-10-28 12:09:55,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:55,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:55,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:55,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-28 12:09:55,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 12:09:55,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:55,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:55,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:55,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:55,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:55,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:55,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:09:55,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:55,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:55,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:55,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:55,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:55,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:55,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:55,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:55,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:55,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:09:55,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:55,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 12:09:55,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:55,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:55,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:55,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:09:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:55,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:56,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:56,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 12:09:56,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:56,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-28 12:09:56,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:56,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:56,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:56,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:56,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-28 12:09:56,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:56,189 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-28 12:09:56,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421233287] [2020-10-28 12:09:56,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:09:56,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:09:56,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720007602] [2020-10-28 12:09:56,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:09:56,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:56,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:09:56,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:09:56,191 INFO L87 Difference]: Start difference. First operand 9214 states and 11283 transitions. Second operand 5 states. [2020-10-28 12:09:59,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:59,482 INFO L93 Difference]: Finished difference Result 20935 states and 25899 transitions. [2020-10-28 12:09:59,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:09:59,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 371 [2020-10-28 12:09:59,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:59,517 INFO L225 Difference]: With dead ends: 20935 [2020-10-28 12:09:59,517 INFO L226 Difference]: Without dead ends: 12105 [2020-10-28 12:09:59,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:09:59,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12105 states. [2020-10-28 12:09:59,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12105 to 11701. [2020-10-28 12:09:59,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11701 states. [2020-10-28 12:09:59,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11701 states to 11701 states and 14141 transitions. [2020-10-28 12:09:59,793 INFO L78 Accepts]: Start accepts. Automaton has 11701 states and 14141 transitions. Word has length 371 [2020-10-28 12:09:59,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:59,794 INFO L481 AbstractCegarLoop]: Abstraction has 11701 states and 14141 transitions. [2020-10-28 12:09:59,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:09:59,794 INFO L276 IsEmpty]: Start isEmpty. Operand 11701 states and 14141 transitions. [2020-10-28 12:09:59,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-10-28 12:09:59,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:59,807 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:09:59,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 12:09:59,808 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:59,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:59,808 INFO L82 PathProgramCache]: Analyzing trace with hash -110624269, now seen corresponding path program 1 times [2020-10-28 12:09:59,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:59,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181849836] [2020-10-28 12:09:59,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:59,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:00,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:00,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:00,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 402 [2020-10-28 12:10:00,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:10:00,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 810 [2020-10-28 12:10:00,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:00,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:00,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:00,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-28 12:10:00,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:10:00,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:00,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:00,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:00,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:00,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:00,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:00,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:10:00,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:00,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:00,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:00,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:00,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:00,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:00,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:10:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:00,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:00,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:00,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:10:00,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:00,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:10:00,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:00,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:00,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:00,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:00,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:00,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:01,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:10:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:01,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:01,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:01,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 12:10:01,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:01,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 12:10:01,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:01,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:01,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:01,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:01,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:10:01,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:01,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-28 12:10:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:01,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:01,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:01,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:10:01,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:01,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 12:10:01,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:01,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:01,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:01,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:10:01,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:10:01,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:01,463 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 358 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-28 12:10:01,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181849836] [2020-10-28 12:10:01,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:10:01,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:10:01,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305192647] [2020-10-28 12:10:01,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:10:01,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:01,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:10:01,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:10:01,466 INFO L87 Difference]: Start difference. First operand 11701 states and 14141 transitions. Second operand 7 states. [2020-10-28 12:10:06,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:06,595 INFO L93 Difference]: Finished difference Result 25300 states and 30606 transitions. [2020-10-28 12:10:06,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:10:06,596 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 386 [2020-10-28 12:10:06,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:06,625 INFO L225 Difference]: With dead ends: 25300 [2020-10-28 12:10:06,626 INFO L226 Difference]: Without dead ends: 13411 [2020-10-28 12:10:06,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:10:06,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13411 states. [2020-10-28 12:10:06,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13411 to 11505. [2020-10-28 12:10:06,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11505 states. [2020-10-28 12:10:06,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11505 states to 11505 states and 13867 transitions. [2020-10-28 12:10:06,896 INFO L78 Accepts]: Start accepts. Automaton has 11505 states and 13867 transitions. Word has length 386 [2020-10-28 12:10:06,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:06,897 INFO L481 AbstractCegarLoop]: Abstraction has 11505 states and 13867 transitions. [2020-10-28 12:10:06,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:10:06,897 INFO L276 IsEmpty]: Start isEmpty. Operand 11505 states and 13867 transitions. [2020-10-28 12:10:06,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-10-28 12:10:06,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:06,913 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:10:06,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 12:10:06,913 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:06,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:06,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1476525834, now seen corresponding path program 1 times [2020-10-28 12:10:06,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:06,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917407605] [2020-10-28 12:10:06,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:07,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:07,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:07,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:07,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:11,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:11,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:12,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:12,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 439 [2020-10-28 12:10:12,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:10:12,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 12:10:12,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:12,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:12,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:12,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:10:12,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 12:10:12,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:12,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:12,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:12,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:12,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:12,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:12,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:10:12,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:12,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:12,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:12,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:12,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:12,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:12,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:10:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:12,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:12,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:12,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:10:12,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:12,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 12:10:12,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:12,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:12,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:12,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:12,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:10:12,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:12,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:10:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:12,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:12,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:12,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:10:12,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:12,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 12:10:12,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:12,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:12,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:12,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:10:12,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 12:10:12,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:12,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-10-28 12:10:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:12,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:12,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:12,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:10:12,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:12,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 12:10:12,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:12,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:12,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:12,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-28 12:10:12,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:12,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:12,723 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 287 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-28 12:10:12,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917407605] [2020-10-28 12:10:12,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:10:12,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:10:12,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029264741] [2020-10-28 12:10:12,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:10:12,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:12,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:10:12,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:10:12,725 INFO L87 Difference]: Start difference. First operand 11505 states and 13867 transitions. Second operand 7 states. [2020-10-28 12:10:17,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:17,263 INFO L93 Difference]: Finished difference Result 24184 states and 29323 transitions. [2020-10-28 12:10:17,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:10:17,264 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 423 [2020-10-28 12:10:17,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:17,290 INFO L225 Difference]: With dead ends: 24184 [2020-10-28 12:10:17,290 INFO L226 Difference]: Without dead ends: 13063 [2020-10-28 12:10:17,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:10:17,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13063 states. [2020-10-28 12:10:17,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13063 to 13036. [2020-10-28 12:10:17,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13036 states. [2020-10-28 12:10:17,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13036 states to 13036 states and 15550 transitions. [2020-10-28 12:10:17,556 INFO L78 Accepts]: Start accepts. Automaton has 13036 states and 15550 transitions. Word has length 423 [2020-10-28 12:10:17,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:17,556 INFO L481 AbstractCegarLoop]: Abstraction has 13036 states and 15550 transitions. [2020-10-28 12:10:17,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:10:17,556 INFO L276 IsEmpty]: Start isEmpty. Operand 13036 states and 15550 transitions. [2020-10-28 12:10:17,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2020-10-28 12:10:17,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:17,573 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:10:17,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 12:10:17,574 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:17,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:17,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1890287473, now seen corresponding path program 1 times [2020-10-28 12:10:17,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:17,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334142902] [2020-10-28 12:10:17,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:17,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:17,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:18,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:19,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:20,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:20,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 444 [2020-10-28 12:10:20,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:10:20,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3255 [2020-10-28 12:10:20,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:20,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:20,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:20,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-28 12:10:20,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:10:20,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:21,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:21,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:21,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:21,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:21,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:21,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:10:21,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:21,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:21,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:21,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:21,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:21,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:21,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:10:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:21,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:21,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:21,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:10:21,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:21,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:10:21,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:21,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:21,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:21,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:21,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:21,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:21,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:10:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:21,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:21,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:21,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 12:10:21,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:21,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 12:10:21,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:21,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:21,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:21,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:21,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 12:10:21,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:21,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-28 12:10:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:21,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:21,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:21,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:10:21,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:21,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 12:10:21,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:21,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:21,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:21,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:10:21,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:10:21,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:21,601 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 358 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-28 12:10:21,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334142902] [2020-10-28 12:10:21,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:10:21,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:10:21,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562644239] [2020-10-28 12:10:21,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:10:21,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:21,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:10:21,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:10:21,603 INFO L87 Difference]: Start difference. First operand 13036 states and 15550 transitions. Second operand 7 states. [2020-10-28 12:10:25,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:25,709 INFO L93 Difference]: Finished difference Result 25924 states and 30944 transitions. [2020-10-28 12:10:25,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:10:25,710 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 428 [2020-10-28 12:10:25,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:25,732 INFO L225 Difference]: With dead ends: 25924 [2020-10-28 12:10:25,732 INFO L226 Difference]: Without dead ends: 13272 [2020-10-28 12:10:25,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:10:25,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13272 states. [2020-10-28 12:10:25,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13272 to 12854. [2020-10-28 12:10:25,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12854 states. [2020-10-28 12:10:25,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12854 states to 12854 states and 14900 transitions. [2020-10-28 12:10:25,969 INFO L78 Accepts]: Start accepts. Automaton has 12854 states and 14900 transitions. Word has length 428 [2020-10-28 12:10:25,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:25,970 INFO L481 AbstractCegarLoop]: Abstraction has 12854 states and 14900 transitions. [2020-10-28 12:10:25,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:10:25,970 INFO L276 IsEmpty]: Start isEmpty. Operand 12854 states and 14900 transitions. [2020-10-28 12:10:25,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-10-28 12:10:25,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:25,984 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:10:25,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 12:10:25,984 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:25,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:25,985 INFO L82 PathProgramCache]: Analyzing trace with hash 836585644, now seen corresponding path program 1 times [2020-10-28 12:10:25,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:25,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046649645] [2020-10-28 12:10:25,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:26,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:26,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:28,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:29,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:30,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:30,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 450 [2020-10-28 12:10:30,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:10:30,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4472 [2020-10-28 12:10:30,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:30,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:30,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:30,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:10:30,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-28 12:10:30,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:30,752 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 12:10:30,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:30,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:30,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:30,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:30,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:30,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:10:30,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:30,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:30,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:30,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:30,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:30,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:30,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:10:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:30,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:30,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:30,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:10:30,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:30,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 12:10:30,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:30,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:10:30,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:30,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:10:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:30,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:31,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:31,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:10:31,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:31,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 12:10:31,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:31,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:31,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:31,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:10:31,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-28 12:10:31,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:31,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-28 12:10:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:31,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:31,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:31,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:10:31,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:31,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 12:10:31,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:31,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:31,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:31,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-28 12:10:31,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:31,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:31,356 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 288 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-28 12:10:31,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046649645] [2020-10-28 12:10:31,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:10:31,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:10:31,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883965777] [2020-10-28 12:10:31,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:10:31,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:31,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:10:31,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:10:31,358 INFO L87 Difference]: Start difference. First operand 12854 states and 14900 transitions. Second operand 7 states. [2020-10-28 12:10:34,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:34,847 INFO L93 Difference]: Finished difference Result 26713 states and 31255 transitions. [2020-10-28 12:10:34,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:10:34,850 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 434 [2020-10-28 12:10:34,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:34,882 INFO L225 Difference]: With dead ends: 26713 [2020-10-28 12:10:34,882 INFO L226 Difference]: Without dead ends: 14243 [2020-10-28 12:10:34,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:10:34,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14243 states. [2020-10-28 12:10:35,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14243 to 13992. [2020-10-28 12:10:35,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13992 states. [2020-10-28 12:10:35,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13992 states to 13992 states and 16355 transitions. [2020-10-28 12:10:35,140 INFO L78 Accepts]: Start accepts. Automaton has 13992 states and 16355 transitions. Word has length 434 [2020-10-28 12:10:35,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:35,141 INFO L481 AbstractCegarLoop]: Abstraction has 13992 states and 16355 transitions. [2020-10-28 12:10:35,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:10:35,141 INFO L276 IsEmpty]: Start isEmpty. Operand 13992 states and 16355 transitions. [2020-10-28 12:10:35,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2020-10-28 12:10:35,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:35,151 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 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 12:10:35,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 12:10:35,151 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:35,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:35,152 INFO L82 PathProgramCache]: Analyzing trace with hash -2020661867, now seen corresponding path program 1 times [2020-10-28 12:10:35,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:35,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121118] [2020-10-28 12:10:35,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:35,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:35,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:35,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:38,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:38,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 488 [2020-10-28 12:10:38,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:10:38,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3134 [2020-10-28 12:10:38,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:38,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:38,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:38,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-28 12:10:38,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:10:38,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:38,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:38,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:38,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:38,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:38,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:38,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:10:38,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:38,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:38,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:38,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:38,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:38,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:38,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:10:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:38,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:38,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:38,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:10:38,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:38,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 12:10:38,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:38,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:38,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:38,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:38,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:38,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:38,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:10:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:38,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:38,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:38,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:10:38,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:38,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 12:10:38,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:38,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:38,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:38,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:38,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-28 12:10:38,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:38,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-28 12:10:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:38,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:38,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:38,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:10:38,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:38,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 12:10:38,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:38,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:38,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:38,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:10:38,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:10:38,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:39,195 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 358 proven. 2 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-28 12:10:39,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121118] [2020-10-28 12:10:39,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:10:39,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:10:39,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534978187] [2020-10-28 12:10:39,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:10:39,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:39,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:10:39,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:10:39,197 INFO L87 Difference]: Start difference. First operand 13992 states and 16355 transitions. Second operand 7 states. [2020-10-28 12:10:40,131 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-28 12:10:43,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:43,268 INFO L93 Difference]: Finished difference Result 28212 states and 33020 transitions. [2020-10-28 12:10:43,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:10:43,269 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 472 [2020-10-28 12:10:43,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:43,293 INFO L225 Difference]: With dead ends: 28212 [2020-10-28 12:10:43,294 INFO L226 Difference]: Without dead ends: 14221 [2020-10-28 12:10:43,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:10:43,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14221 states. [2020-10-28 12:10:43,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14221 to 13994. [2020-10-28 12:10:43,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13994 states. [2020-10-28 12:10:43,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13994 states to 13994 states and 16229 transitions. [2020-10-28 12:10:43,528 INFO L78 Accepts]: Start accepts. Automaton has 13994 states and 16229 transitions. Word has length 472 [2020-10-28 12:10:43,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:43,528 INFO L481 AbstractCegarLoop]: Abstraction has 13994 states and 16229 transitions. [2020-10-28 12:10:43,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:10:43,528 INFO L276 IsEmpty]: Start isEmpty. Operand 13994 states and 16229 transitions. [2020-10-28 12:10:43,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2020-10-28 12:10:43,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:43,539 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:10:43,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 12:10:43,539 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:43,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:43,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1440720568, now seen corresponding path program 1 times [2020-10-28 12:10:43,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:43,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079589287] [2020-10-28 12:10:43,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:43,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:44,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:44,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:47,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:47,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 505 [2020-10-28 12:10:47,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:10:47,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3547 [2020-10-28 12:10:47,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:47,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 12:10:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 342 [2020-10-28 12:10:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-28 12:10:47,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:47,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:47,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:47,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:47,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:47,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:47,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:10:47,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:47,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:47,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:47,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:47,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:47,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:47,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:10:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:47,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:47,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:47,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:10:47,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:47,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 12:10:47,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:47,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:47,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:47,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:47,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:47,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:47,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 12:10:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:47,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:47,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:47,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:10:47,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:47,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 12:10:47,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:47,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:47,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:47,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:47,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:10:47,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:47,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-28 12:10:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:47,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:47,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:47,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:10:47,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:47,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-28 12:10:47,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:47,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:47,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:10:47,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:10:47,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:10:47,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:48,535 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 298 proven. 62 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-10-28 12:10:48,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079589287] [2020-10-28 12:10:48,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:10:48,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 12:10:48,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181583899] [2020-10-28 12:10:48,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 12:10:48,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:48,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 12:10:48,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-28 12:10:48,537 INFO L87 Difference]: Start difference. First operand 13994 states and 16229 transitions. Second operand 9 states. [2020-10-28 12:10:55,851 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-28 12:10:57,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:57,034 INFO L93 Difference]: Finished difference Result 33972 states and 39624 transitions. [2020-10-28 12:10:57,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 12:10:57,035 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 489 [2020-10-28 12:10:57,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:57,070 INFO L225 Difference]: With dead ends: 33972 [2020-10-28 12:10:57,071 INFO L226 Difference]: Without dead ends: 20166 [2020-10-28 12:10:57,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2020-10-28 12:10:57,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20166 states. [2020-10-28 12:10:57,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20166 to 18020. [2020-10-28 12:10:57,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18020 states. [2020-10-28 12:10:57,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18020 states to 18020 states and 20706 transitions. [2020-10-28 12:10:57,501 INFO L78 Accepts]: Start accepts. Automaton has 18020 states and 20706 transitions. Word has length 489 [2020-10-28 12:10:57,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:57,502 INFO L481 AbstractCegarLoop]: Abstraction has 18020 states and 20706 transitions. [2020-10-28 12:10:57,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 12:10:57,503 INFO L276 IsEmpty]: Start isEmpty. Operand 18020 states and 20706 transitions. [2020-10-28 12:10:57,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2020-10-28 12:10:57,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:57,523 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 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] [2020-10-28 12:10:57,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 12:10:57,523 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:57,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:57,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1963384062, now seen corresponding path program 1 times [2020-10-28 12:10:57,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:57,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579970965] [2020-10-28 12:10:57,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:57,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:57,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:58,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:00,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:02,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:02,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:02,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 533 [2020-10-28 12:11:02,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:11:02,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 12:11:02,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:02,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:02,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:11:02,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:11:02,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-28 12:11:02,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:02,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:02,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:02,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:02,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:02,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:02,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:11:02,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:02,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:02,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:02,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:02,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:02,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:02,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:02,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:03,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:03,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:11:03,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:03,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-28 12:11:03,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:03,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:03,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:03,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:03,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:11:03,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:03,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:11:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:03,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:03,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:03,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:03,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 12:11:03,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:11:03,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-28 12:11:03,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:03,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 12:11:03,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:03,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-28 12:11:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:03,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:03,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:03,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 12:11:03,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:03,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 12:11:03,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:03,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:03,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:03,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:03,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:11:03,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:03,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-10-28 12:11:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:03,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:03,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:03,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:11:03,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:03,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 12:11:03,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:03,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:03,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:03,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-28 12:11:03,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:03,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:04,096 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 404 proven. 90 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2020-10-28 12:11:04,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579970965] [2020-10-28 12:11:04,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:04,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:11:04,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943006240] [2020-10-28 12:11:04,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:11:04,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:04,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:11:04,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:11:04,098 INFO L87 Difference]: Start difference. First operand 18020 states and 20706 transitions. Second operand 7 states. [2020-10-28 12:11:08,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:08,707 INFO L93 Difference]: Finished difference Result 35669 states and 40989 transitions. [2020-10-28 12:11:08,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:11:08,708 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 515 [2020-10-28 12:11:08,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:08,732 INFO L225 Difference]: With dead ends: 35669 [2020-10-28 12:11:08,733 INFO L226 Difference]: Without dead ends: 15495 [2020-10-28 12:11:08,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 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 12:11:08,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15495 states. [2020-10-28 12:11:08,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15495 to 14522. [2020-10-28 12:11:08,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14522 states. [2020-10-28 12:11:08,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14522 states to 14522 states and 16447 transitions. [2020-10-28 12:11:08,959 INFO L78 Accepts]: Start accepts. Automaton has 14522 states and 16447 transitions. Word has length 515 [2020-10-28 12:11:08,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:08,960 INFO L481 AbstractCegarLoop]: Abstraction has 14522 states and 16447 transitions. [2020-10-28 12:11:08,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:11:08,960 INFO L276 IsEmpty]: Start isEmpty. Operand 14522 states and 16447 transitions. [2020-10-28 12:11:08,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2020-10-28 12:11:08,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:08,979 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:11:08,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 12:11:08,980 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:08,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:08,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1609064267, now seen corresponding path program 1 times [2020-10-28 12:11:08,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:08,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782177772] [2020-10-28 12:11:08,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:09,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:09,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:12,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:14,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:14,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 594 [2020-10-28 12:11:14,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:11:14,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-28 12:11:14,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:14,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:14,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:14,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 431 [2020-10-28 12:11:14,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:11:14,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:14,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:14,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:14,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:14,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:14,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:14,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:11:14,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:14,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:14,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:14,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:14,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:14,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:14,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:14,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:14,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:14,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:11:14,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:14,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 12:11:14,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:14,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:14,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:14,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:14,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:14,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:14,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 12:11:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:14,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:14,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:14,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:11:14,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:14,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 12:11:14,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:14,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:14,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:14,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:14,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:14,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:14,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-28 12:11:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:14,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:14,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:14,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 12:11:14,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:14,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 12:11:14,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:14,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:14,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:14,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:14,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 12:11:14,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:14,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:11:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:14,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:14,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:14,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:11:14,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:14,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 12:11:14,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:14,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:14,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:14,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:14,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:11:14,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:15,084 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 504 proven. 2 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2020-10-28 12:11:15,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782177772] [2020-10-28 12:11:15,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:15,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:11:15,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943891273] [2020-10-28 12:11:15,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:11:15,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:15,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:11:15,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:11:15,087 INFO L87 Difference]: Start difference. First operand 14522 states and 16447 transitions. Second operand 7 states. [2020-10-28 12:11:18,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:18,668 INFO L93 Difference]: Finished difference Result 31328 states and 35457 transitions. [2020-10-28 12:11:18,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:11:18,669 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 576 [2020-10-28 12:11:18,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:18,698 INFO L225 Difference]: With dead ends: 31328 [2020-10-28 12:11:18,698 INFO L226 Difference]: Without dead ends: 17002 [2020-10-28 12:11:18,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:11:18,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17002 states. [2020-10-28 12:11:18,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17002 to 14330. [2020-10-28 12:11:18,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14330 states. [2020-10-28 12:11:18,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14330 states to 14330 states and 16162 transitions. [2020-10-28 12:11:18,935 INFO L78 Accepts]: Start accepts. Automaton has 14330 states and 16162 transitions. Word has length 576 [2020-10-28 12:11:18,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:18,935 INFO L481 AbstractCegarLoop]: Abstraction has 14330 states and 16162 transitions. [2020-10-28 12:11:18,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:11:18,936 INFO L276 IsEmpty]: Start isEmpty. Operand 14330 states and 16162 transitions. [2020-10-28 12:11:18,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2020-10-28 12:11:18,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:18,956 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-28 12:11:18,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 12:11:18,956 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:18,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:18,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1118027290, now seen corresponding path program 1 times [2020-10-28 12:11:18,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:18,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587951823] [2020-10-28 12:11:18,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:19,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:19,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:19,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:24,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:24,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 606 [2020-10-28 12:11:24,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:11:24,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-28 12:11:24,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:24,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:24,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:24,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 390 [2020-10-28 12:11:24,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-28 12:11:24,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:24,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:24,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:24,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:24,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:24,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:24,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:11:24,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:24,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:24,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:24,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:24,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:24,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:24,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:24,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:24,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:24,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:11:24,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:24,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:11:24,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:24,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:24,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:24,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:11:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:24,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:24,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:24,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 12:11:24,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:24,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 12:11:24,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:24,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:24,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:24,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:24,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:24,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:24,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-28 12:11:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:24,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:24,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:24,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:11:24,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:24,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 12:11:24,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:24,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:24,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:24,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:24,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 12:11:24,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:24,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-28 12:11:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:24,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:24,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:24,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:11:24,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:24,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 12:11:24,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:24,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:24,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:24,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:24,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-28 12:11:24,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0