/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:34:00,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:34:00,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:34:00,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:34:00,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:34:00,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:34:00,813 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:34:00,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:34:00,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:34:00,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:34:00,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:34:00,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:34:00,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:34:00,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:34:00,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:34:00,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:34:00,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:34:00,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:34:00,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:34:00,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:34:00,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:34:00,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:34:00,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:34:00,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:34:00,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:34:00,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:34:00,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:34:00,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:34:00,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:34:00,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:34:00,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:34:00,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:34:00,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:34:00,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:34:00,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:34:00,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:34:00,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:34:00,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:34:00,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:34:00,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:34:00,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:34:00,900 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:34:00,951 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:34:00,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:34:00,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:34:00,956 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:34:00,956 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:34:00,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:34:00,956 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:34:00,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:34:00,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:34:00,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:34:00,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:34:00,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:34:00,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:34:00,959 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:34:00,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:34:00,959 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:34:00,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:34:00,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:34:00,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:34:00,960 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:34:00,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:34:00,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:34:00,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:34:00,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:34:00,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:34:00,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:34:00,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:34:00,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:34:00,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:34:00,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:34:01,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:34:01,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:34:01,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:34:01,389 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:34:01,389 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:34:01,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label35.c [2020-10-29 07:34:01,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d07c39a08/eea07ba5a7b14e28aff5e414366294ac/FLAG0b5e27087 [2020-10-29 07:34:02,251 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:34:02,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label35.c [2020-10-29 07:34:02,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d07c39a08/eea07ba5a7b14e28aff5e414366294ac/FLAG0b5e27087 [2020-10-29 07:34:02,469 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d07c39a08/eea07ba5a7b14e28aff5e414366294ac [2020-10-29 07:34:02,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:34:02,481 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:34:02,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:34:02,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:34:02,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:34:02,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:34:02" (1/1) ... [2020-10-29 07:34:02,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193924e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:34:02, skipping insertion in model container [2020-10-29 07:34:02,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:34:02" (1/1) ... [2020-10-29 07:34:02,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:34:02,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:34:03,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:34:03,087 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:34:03,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:34:03,334 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:34:03,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:34:03 WrapperNode [2020-10-29 07:34:03,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:34:03,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:34:03,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:34:03,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:34:03,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:34:03" (1/1) ... [2020-10-29 07:34:03,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:34:03" (1/1) ... [2020-10-29 07:34:03,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:34:03" (1/1) ... [2020-10-29 07:34:03,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:34:03" (1/1) ... [2020-10-29 07:34:03,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:34:03" (1/1) ... [2020-10-29 07:34:03,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:34:03" (1/1) ... [2020-10-29 07:34:03,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:34:03" (1/1) ... [2020-10-29 07:34:03,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:34:03,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:34:03,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:34:03,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:34:03,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:34:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:34:03,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:34:03,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:34:03,571 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:34:03,572 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:34:03,572 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:34:03,573 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:34:03,574 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:34:03,574 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:34:03,575 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:34:03,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:34:03,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:34:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:34:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:34:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:34:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:34:03,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:34:03,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:34:03,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:34:03,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:34:05,437 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:34:05,437 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:34:05,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:34:05 BoogieIcfgContainer [2020-10-29 07:34:05,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:34:05,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:34:05,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:34:05,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:34:05,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:34:02" (1/3) ... [2020-10-29 07:34:05,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642e4782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:34:05, skipping insertion in model container [2020-10-29 07:34:05,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:34:03" (2/3) ... [2020-10-29 07:34:05,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642e4782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:34:05, skipping insertion in model container [2020-10-29 07:34:05,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:34:05" (3/3) ... [2020-10-29 07:34:05,450 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label35.c [2020-10-29 07:34:05,463 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:34:05,469 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:34:05,483 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:34:05,515 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:34:05,515 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:34:05,515 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:34:05,515 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:34:05,516 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:34:05,516 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:34:05,516 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:34:05,516 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:34:05,563 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-29 07:34:05,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 07:34:05,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:34:05,573 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] [2020-10-29 07:34:05,573 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:34:05,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:34:05,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1321361402, now seen corresponding path program 1 times [2020-10-29 07:34:05,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:34:05,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727279254] [2020-10-29 07:34:05,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:34:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:05,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:06,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:06,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 07:34:06,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:06,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-10-29 07:34:06,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:06,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:06,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:34:06,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:34:06,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 07:34:06,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:34:06,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:34:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:06,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:06,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:06,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:34:06,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:06,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 07:34:06,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:06,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:06,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:34:06,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:06,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:34:06,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:34:06,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:34:06,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727279254] [2020-10-29 07:34:06,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:34:06,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:34:06,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220576094] [2020-10-29 07:34:06,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:34:06,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:34:06,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:34:06,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:34:06,753 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-29 07:34:06,936 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 07:34:09,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:34:09,134 INFO L93 Difference]: Finished difference Result 703 states and 1247 transitions. [2020-10-29 07:34:09,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:34:09,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-29 07:34:09,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:34:09,169 INFO L225 Difference]: With dead ends: 703 [2020-10-29 07:34:09,169 INFO L226 Difference]: Without dead ends: 381 [2020-10-29 07:34:09,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:34:09,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-29 07:34:09,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 375. [2020-10-29 07:34:09,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-10-29 07:34:09,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 605 transitions. [2020-10-29 07:34:09,284 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 605 transitions. Word has length 51 [2020-10-29 07:34:09,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:34:09,284 INFO L481 AbstractCegarLoop]: Abstraction has 375 states and 605 transitions. [2020-10-29 07:34:09,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:34:09,285 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 605 transitions. [2020-10-29 07:34:09,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 07:34:09,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:34:09,292 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:34:09,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:34:09,292 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:34:09,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:34:09,293 INFO L82 PathProgramCache]: Analyzing trace with hash -2145241799, now seen corresponding path program 1 times [2020-10-29 07:34:09,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:34:09,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743620967] [2020-10-29 07:34:09,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:34:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:09,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:09,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:10,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:10,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:10,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 07:34:10,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:34:10,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1465 [2020-10-29 07:34:10,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:10,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:10,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:34:10,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:34:10,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:34:10,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:34:10,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:34:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:10,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:10,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:10,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:34:10,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:10,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:34:10,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:10,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:10,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:34:10,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:34:10,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:34:11,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:34:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:11,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:11,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:11,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:34:11,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:11,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 07:34:11,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:11,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:34:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:34:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:34:11,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:34:11,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743620967] [2020-10-29 07:34:11,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:34:11,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:34:11,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079869200] [2020-10-29 07:34:11,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:34:11,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:34:11,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:34:11,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:34:11,257 INFO L87 Difference]: Start difference. First operand 375 states and 605 transitions. Second operand 7 states. [2020-10-29 07:34:14,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:34:14,155 INFO L93 Difference]: Finished difference Result 1156 states and 1932 transitions. [2020-10-29 07:34:14,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:34:14,158 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-10-29 07:34:14,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:34:14,165 INFO L225 Difference]: With dead ends: 1156 [2020-10-29 07:34:14,166 INFO L226 Difference]: Without dead ends: 787 [2020-10-29 07:34:14,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:34:14,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-10-29 07:34:14,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 563. [2020-10-29 07:34:14,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-10-29 07:34:14,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 833 transitions. [2020-10-29 07:34:14,237 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 833 transitions. Word has length 120 [2020-10-29 07:34:14,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:34:14,237 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 833 transitions. [2020-10-29 07:34:14,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:34:14,238 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 833 transitions. [2020-10-29 07:34:14,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 07:34:14,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:34:14,241 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:34:14,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:34:14,241 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:34:14,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:34:14,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1633202495, now seen corresponding path program 1 times [2020-10-29 07:34:14,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:34:14,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524126206] [2020-10-29 07:34:14,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:34:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:14,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:14,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:15,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:15,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 07:34:15,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:34:15,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1350 [2020-10-29 07:34:15,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:15,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:15,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:34:15,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:34:15,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 07:34:15,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:15,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:34:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:15,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:15,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:15,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:34:15,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:15,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:34:15,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:15,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:15,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:34:15,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:15,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:34:15,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:15,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:34:15,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:15,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:15,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:15,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:34:15,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:15,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 07:34:15,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:15,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:34:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:34:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 07:34:15,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:34:16,118 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:34:16,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524126206] [2020-10-29 07:34:16,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:34:16,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:34:16,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766675368] [2020-10-29 07:34:16,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:34:16,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:34:16,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:34:16,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:34:16,126 INFO L87 Difference]: Start difference. First operand 563 states and 833 transitions. Second operand 7 states. [2020-10-29 07:34:18,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:34:18,655 INFO L93 Difference]: Finished difference Result 1356 states and 2041 transitions. [2020-10-29 07:34:18,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:34:18,656 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-29 07:34:18,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:34:18,664 INFO L225 Difference]: With dead ends: 1356 [2020-10-29 07:34:18,664 INFO L226 Difference]: Without dead ends: 799 [2020-10-29 07:34:18,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:34:18,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2020-10-29 07:34:18,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 749. [2020-10-29 07:34:18,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2020-10-29 07:34:18,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1035 transitions. [2020-10-29 07:34:18,711 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1035 transitions. Word has length 124 [2020-10-29 07:34:18,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:34:18,712 INFO L481 AbstractCegarLoop]: Abstraction has 749 states and 1035 transitions. [2020-10-29 07:34:18,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:34:18,712 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1035 transitions. [2020-10-29 07:34:18,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-29 07:34:18,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:34:18,721 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, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:34:18,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:34:18,722 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:34:18,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:34:18,723 INFO L82 PathProgramCache]: Analyzing trace with hash 2144006444, now seen corresponding path program 1 times [2020-10-29 07:34:18,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:34:18,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746294963] [2020-10-29 07:34:18,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:34:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:18,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:18,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:19,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:19,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:20,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:20,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-29 07:34:20,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:34:20,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1492 [2020-10-29 07:34:20,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:20,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:20,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 07:34:20,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:34:20,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-29 07:34:20,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:20,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:34:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:20,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:20,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:20,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:34:20,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:20,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:34:20,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:20,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:20,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:34:20,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:20,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:34:20,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:20,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:34:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:20,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:20,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:20,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 07:34:20,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:20,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-29 07:34:20,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:20,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:20,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:34:20,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:34:20,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:34:20,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:34:20,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-29 07:34:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:20,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:20,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:20,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:34:20,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:20,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-29 07:34:20,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:20,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:20,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:34:20,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:34:20,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 07:34:20,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:21,024 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 33 proven. 56 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-29 07:34:21,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746294963] [2020-10-29 07:34:21,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:34:21,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:34:21,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449566320] [2020-10-29 07:34:21,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:34:21,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:34:21,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:34:21,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:34:21,028 INFO L87 Difference]: Start difference. First operand 749 states and 1035 transitions. Second operand 8 states. [2020-10-29 07:34:23,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:34:23,785 INFO L93 Difference]: Finished difference Result 1559 states and 2352 transitions. [2020-10-29 07:34:23,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:34:23,786 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 208 [2020-10-29 07:34:23,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:34:23,793 INFO L225 Difference]: With dead ends: 1559 [2020-10-29 07:34:23,793 INFO L226 Difference]: Without dead ends: 1147 [2020-10-29 07:34:23,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:34:23,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2020-10-29 07:34:23,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 935. [2020-10-29 07:34:23,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 935 states. [2020-10-29 07:34:23,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1174 transitions. [2020-10-29 07:34:23,831 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1174 transitions. Word has length 208 [2020-10-29 07:34:23,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:34:23,832 INFO L481 AbstractCegarLoop]: Abstraction has 935 states and 1174 transitions. [2020-10-29 07:34:23,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:34:23,832 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1174 transitions. [2020-10-29 07:34:23,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-29 07:34:23,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:34:23,836 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:34:23,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:34:23,837 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:34:23,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:34:23,837 INFO L82 PathProgramCache]: Analyzing trace with hash 851097408, now seen corresponding path program 1 times [2020-10-29 07:34:23,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:34:23,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917782659] [2020-10-29 07:34:23,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:34:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:23,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:23,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:24,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:24,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:25,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:27,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:27,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-29 07:34:27,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:34:27,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3428 [2020-10-29 07:34:27,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:27,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:27,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:34:27,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:34:27,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-29 07:34:27,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:27,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:34:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:27,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:27,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:27,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:34:27,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:27,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:34:27,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:27,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:27,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:34:27,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:27,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:34:27,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:34:27,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:34:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:27,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:27,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:27,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 07:34:27,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:27,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 07:34:27,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:27,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:27,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:34:27,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:34:27,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:34:27,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:27,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-29 07:34:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:27,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:27,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:27,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:34:27,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:27,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 07:34:27,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:27,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:27,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:34:27,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:34:27,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:34:27,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:34:28,303 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 87 proven. 78 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:34:28,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917782659] [2020-10-29 07:34:28,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:34:28,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:34:28,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646263219] [2020-10-29 07:34:28,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:34:28,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:34:28,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:34:28,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:34:28,307 INFO L87 Difference]: Start difference. First operand 935 states and 1174 transitions. Second operand 8 states. [2020-10-29 07:34:30,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:34:30,787 INFO L93 Difference]: Finished difference Result 1712 states and 2194 transitions. [2020-10-29 07:34:30,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:34:30,791 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 218 [2020-10-29 07:34:30,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:34:30,803 INFO L225 Difference]: With dead ends: 1712 [2020-10-29 07:34:30,803 INFO L226 Difference]: Without dead ends: 1149 [2020-10-29 07:34:30,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-29 07:34:30,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2020-10-29 07:34:30,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1121. [2020-10-29 07:34:30,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1121 states. [2020-10-29 07:34:30,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1378 transitions. [2020-10-29 07:34:30,852 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1378 transitions. Word has length 218 [2020-10-29 07:34:30,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:34:30,853 INFO L481 AbstractCegarLoop]: Abstraction has 1121 states and 1378 transitions. [2020-10-29 07:34:30,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:34:30,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1378 transitions. [2020-10-29 07:34:30,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-29 07:34:30,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:34:30,857 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, 2, 2, 2, 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] [2020-10-29 07:34:30,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:34:30,858 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:34:30,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:34:30,858 INFO L82 PathProgramCache]: Analyzing trace with hash -5157598, now seen corresponding path program 1 times [2020-10-29 07:34:30,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:34:30,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132816308] [2020-10-29 07:34:30,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:34:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:30,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:31,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:31,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:32,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:32,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:35,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:35,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:35,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 07:34:35,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:34:35,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 07:34:35,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:35,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:35,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:34:35,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:34:35,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-29 07:34:35,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:36,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:34:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:36,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:36,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:36,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:34:36,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:36,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:34:36,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:36,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:36,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:34:36,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:36,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:34:36,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:36,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:34:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:36,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:36,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:36,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:36,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:34:36,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:34:36,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-29 07:34:36,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:36,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:36,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:34:36,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:36,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 07:34:36,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:36,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-29 07:34:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:36,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:36,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:36,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 07:34:36,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:36,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 07:34:36,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:36,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:36,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:34:36,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:34:36,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:34:36,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:36,559 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:34:36,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132816308] [2020-10-29 07:34:36,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:34:36,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:34:36,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192862743] [2020-10-29 07:34:36,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:34:36,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:34:36,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:34:36,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:34:36,563 INFO L87 Difference]: Start difference. First operand 1121 states and 1378 transitions. Second operand 7 states. [2020-10-29 07:34:38,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:34:38,770 INFO L93 Difference]: Finished difference Result 2828 states and 3536 transitions. [2020-10-29 07:34:38,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:34:38,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-10-29 07:34:38,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:34:38,782 INFO L225 Difference]: With dead ends: 2828 [2020-10-29 07:34:38,782 INFO L226 Difference]: Without dead ends: 1895 [2020-10-29 07:34:38,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:34:38,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2020-10-29 07:34:38,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1871. [2020-10-29 07:34:38,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1871 states. [2020-10-29 07:34:38,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 2227 transitions. [2020-10-29 07:34:38,843 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 2227 transitions. Word has length 230 [2020-10-29 07:34:38,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:34:38,844 INFO L481 AbstractCegarLoop]: Abstraction has 1871 states and 2227 transitions. [2020-10-29 07:34:38,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:34:38,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 2227 transitions. [2020-10-29 07:34:38,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-29 07:34:38,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:34:38,848 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, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:34:38,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:34:38,848 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:34:38,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:34:38,849 INFO L82 PathProgramCache]: Analyzing trace with hash 162805150, now seen corresponding path program 1 times [2020-10-29 07:34:38,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:34:38,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875056035] [2020-10-29 07:34:38,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:34:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:38,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:38,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:39,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:43,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:43,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-29 07:34:43,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:34:43,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4819 [2020-10-29 07:34:43,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:43,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:43,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:34:43,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:34:43,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-29 07:34:43,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:43,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:34:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:43,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:43,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:43,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:34:43,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:43,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:34:43,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:43,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:43,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:34:43,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:43,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:34:43,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:34:43,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:34:43,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:43,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:44,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:44,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:34:44,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:44,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 07:34:44,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:44,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:44,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:34:44,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:34:44,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 07:34:44,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:34:44,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-29 07:34:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:44,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:44,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:44,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:34:44,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:44,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 07:34:44,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:44,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:44,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:44,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 07:34:44,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:44,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:44,355 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 86 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:34:44,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875056035] [2020-10-29 07:34:44,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:34:44,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:34:44,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877250820] [2020-10-29 07:34:44,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:34:44,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:34:44,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:34:44,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:34:44,360 INFO L87 Difference]: Start difference. First operand 1871 states and 2227 transitions. Second operand 7 states. [2020-10-29 07:34:46,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:34:46,936 INFO L93 Difference]: Finished difference Result 4882 states and 5968 transitions. [2020-10-29 07:34:46,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:34:46,937 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-10-29 07:34:46,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:34:46,954 INFO L225 Difference]: With dead ends: 4882 [2020-10-29 07:34:46,954 INFO L226 Difference]: Without dead ends: 3199 [2020-10-29 07:34:46,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:34:46,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2020-10-29 07:34:47,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3195. [2020-10-29 07:34:47,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3195 states. [2020-10-29 07:34:47,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3195 states to 3195 states and 3809 transitions. [2020-10-29 07:34:47,067 INFO L78 Accepts]: Start accepts. Automaton has 3195 states and 3809 transitions. Word has length 233 [2020-10-29 07:34:47,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:34:47,067 INFO L481 AbstractCegarLoop]: Abstraction has 3195 states and 3809 transitions. [2020-10-29 07:34:47,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:34:47,068 INFO L276 IsEmpty]: Start isEmpty. Operand 3195 states and 3809 transitions. [2020-10-29 07:34:47,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-29 07:34:47,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:34:47,076 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, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:34:47,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:34:47,076 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:34:47,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:34:47,077 INFO L82 PathProgramCache]: Analyzing trace with hash 262261475, now seen corresponding path program 1 times [2020-10-29 07:34:47,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:34:47,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728821485] [2020-10-29 07:34:47,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:34:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:47,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:47,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:48,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:48,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:50,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:50,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-10-29 07:34:50,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:34:50,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3002 [2020-10-29 07:34:50,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:50,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:50,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:34:50,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-29 07:34:50,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-29 07:34:50,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:50,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:34:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:50,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:50,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:50,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:34:50,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:50,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:34:50,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:50,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:50,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:50,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:50,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:50,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:34:50,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:34:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:50,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:50,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:50,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 07:34:50,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:50,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 07:34:50,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:50,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:50,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:34:50,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:50,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 07:34:50,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:50,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-29 07:34:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:50,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:50,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:50,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 07:34:50,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:50,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-29 07:34:50,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:50,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:50,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:34:50,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:34:50,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-29 07:34:50,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:50,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-29 07:34:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:50,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:50,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:50,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:34:50,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:50,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 07:34:50,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:50,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:50,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:50,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 07:34:50,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:50,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:50,994 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 214 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-29 07:34:50,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728821485] [2020-10-29 07:34:50,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:34:50,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:34:50,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656226084] [2020-10-29 07:34:50,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:34:50,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:34:50,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:34:50,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:34:50,997 INFO L87 Difference]: Start difference. First operand 3195 states and 3809 transitions. Second operand 7 states. [2020-10-29 07:34:53,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:34:53,384 INFO L93 Difference]: Finished difference Result 5682 states and 7031 transitions. [2020-10-29 07:34:53,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:34:53,385 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 341 [2020-10-29 07:34:53,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:34:53,400 INFO L225 Difference]: With dead ends: 5682 [2020-10-29 07:34:53,400 INFO L226 Difference]: Without dead ends: 2481 [2020-10-29 07:34:53,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:34:53,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2481 states. [2020-10-29 07:34:53,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2481 to 2255. [2020-10-29 07:34:53,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2255 states. [2020-10-29 07:34:53,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 2658 transitions. [2020-10-29 07:34:53,496 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 2658 transitions. Word has length 341 [2020-10-29 07:34:53,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:34:53,496 INFO L481 AbstractCegarLoop]: Abstraction has 2255 states and 2658 transitions. [2020-10-29 07:34:53,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:34:53,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 2658 transitions. [2020-10-29 07:34:53,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2020-10-29 07:34:53,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:34:53,507 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, 4, 4, 4, 4, 4, 4, 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, 2, 2, 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] [2020-10-29 07:34:53,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:34:53,508 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:34:53,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:34:53,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1513301492, now seen corresponding path program 1 times [2020-10-29 07:34:53,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:34:53,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449401822] [2020-10-29 07:34:53,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:34:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:53,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:53,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:54,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:56,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:57,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:58,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:58,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 444 [2020-10-29 07:34:58,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:34:58,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 07:34:58,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:58,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:58,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:34:58,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 306 [2020-10-29 07:34:58,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:34:58,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:58,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:34:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:58,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:58,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:58,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:34:58,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:58,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:34:58,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:58,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:58,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:58,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:58,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:58,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:58,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:34:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:58,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:58,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:58,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:34:58,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:58,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:34:58,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:58,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:58,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:58,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:58,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:58,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:58,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:34:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:58,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:58,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:58,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:34:58,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:58,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:34:58,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:58,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:58,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:58,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:58,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:58,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:58,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:34:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:58,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:58,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:58,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:34:58,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:58,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 07:34:58,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:58,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:58,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:34:58,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:58,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 07:34:58,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:59,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-10-29 07:34:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:59,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:59,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:59,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:34:59,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:59,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 07:34:59,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:59,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:59,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:34:59,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:34:59,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:34:59,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:59,496 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 412 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-10-29 07:34:59,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449401822] [2020-10-29 07:34:59,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:34:59,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:34:59,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827770115] [2020-10-29 07:34:59,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:34:59,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:34:59,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:34:59,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:34:59,500 INFO L87 Difference]: Start difference. First operand 2255 states and 2658 transitions. Second operand 7 states. [2020-10-29 07:35:01,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:35:01,933 INFO L93 Difference]: Finished difference Result 4884 states and 5896 transitions. [2020-10-29 07:35:01,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:35:01,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 426 [2020-10-29 07:35:01,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:35:01,947 INFO L225 Difference]: With dead ends: 4884 [2020-10-29 07:35:01,947 INFO L226 Difference]: Without dead ends: 2255 [2020-10-29 07:35:01,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:35:01,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2020-10-29 07:35:02,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 2245. [2020-10-29 07:35:02,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2245 states. [2020-10-29 07:35:02,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2245 states to 2245 states and 2492 transitions. [2020-10-29 07:35:02,029 INFO L78 Accepts]: Start accepts. Automaton has 2245 states and 2492 transitions. Word has length 426 [2020-10-29 07:35:02,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:35:02,030 INFO L481 AbstractCegarLoop]: Abstraction has 2245 states and 2492 transitions. [2020-10-29 07:35:02,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:35:02,030 INFO L276 IsEmpty]: Start isEmpty. Operand 2245 states and 2492 transitions. [2020-10-29 07:35:02,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2020-10-29 07:35:02,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:35:02,047 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:35:02,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:35:02,048 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:35:02,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:35:02,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1951723571, now seen corresponding path program 1 times [2020-10-29 07:35:02,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:35:02,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462160] [2020-10-29 07:35:02,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:35:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:02,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:02,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:02,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:04,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:06,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:06,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:07,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:07,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 653 [2020-10-29 07:35:07,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:35:07,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 07:35:07,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:07,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:35:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-29 07:35:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 294 [2020-10-29 07:35:07,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:07,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:35:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:07,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:07,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:07,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:35:07,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:07,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:35:07,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:07,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:07,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:07,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:07,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:07,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:07,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:35:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:07,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:07,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:07,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:35:07,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:07,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:35:07,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:07,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:07,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:07,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:07,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:07,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:07,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:35:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:07,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:07,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:07,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:35:07,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:07,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 07:35:07,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:07,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:07,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:35:07,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:07,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 07:35:07,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:07,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:35:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:07,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:07,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:07,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:07,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:35:07,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:35:07,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-29 07:35:07,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:07,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:07,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:35:07,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:07,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 07:35:07,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:07,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-29 07:35:07,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:07,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:08,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:08,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:35:08,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:08,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-29 07:35:08,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:08,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:08,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:35:08,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:35:08,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:35:08,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:08,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-10-29 07:35:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:08,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:08,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:08,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:35:08,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:08,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:35:08,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:08,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:08,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:08,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 07:35:08,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:08,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:08,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1168 backedges. 560 proven. 77 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2020-10-29 07:35:08,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462160] [2020-10-29 07:35:08,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:35:08,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:35:08,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608024504] [2020-10-29 07:35:08,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:35:08,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:35:08,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:35:08,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:35:08,469 INFO L87 Difference]: Start difference. First operand 2245 states and 2492 transitions. Second operand 8 states. [2020-10-29 07:35:11,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:35:11,219 INFO L93 Difference]: Finished difference Result 5616 states and 6506 transitions. [2020-10-29 07:35:11,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 07:35:11,220 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 633 [2020-10-29 07:35:11,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:35:11,237 INFO L225 Difference]: With dead ends: 5616 [2020-10-29 07:35:11,237 INFO L226 Difference]: Without dead ends: 3743 [2020-10-29 07:35:11,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-29 07:35:11,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3743 states. [2020-10-29 07:35:11,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3743 to 3359. [2020-10-29 07:35:11,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3359 states. [2020-10-29 07:35:11,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 3724 transitions. [2020-10-29 07:35:11,341 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 3724 transitions. Word has length 633 [2020-10-29 07:35:11,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:35:11,342 INFO L481 AbstractCegarLoop]: Abstraction has 3359 states and 3724 transitions. [2020-10-29 07:35:11,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:35:11,342 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 3724 transitions. [2020-10-29 07:35:11,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2020-10-29 07:35:11,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:35:11,364 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 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] [2020-10-29 07:35:11,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:35:11,365 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:35:11,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:35:11,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1654612835, now seen corresponding path program 1 times [2020-10-29 07:35:11,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:35:11,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576630730] [2020-10-29 07:35:11,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:35:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:11,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:11,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:12,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:16,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:16,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:16,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:16,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 676 [2020-10-29 07:35:16,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:35:16,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 07:35:16,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:16,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:16,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:35:16,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 366 [2020-10-29 07:35:16,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:35:16,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:16,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:35:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:16,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:16,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:16,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:35:16,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:16,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:35:16,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:16,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:16,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:16,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:16,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:35:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:16,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:16,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:16,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:35:16,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:16,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:35:16,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:16,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:16,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:16,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:16,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:16,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:16,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:35:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:16,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:16,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:16,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:35:16,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:16,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 07:35:16,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:16,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:16,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:16,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:16,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:16,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:16,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:35:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:16,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:16,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:16,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 07:35:16,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:16,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 07:35:16,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:16,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:16,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:35:16,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:16,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 07:35:16,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:16,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-10-29 07:35:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:17,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:17,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:17,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:35:17,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:17,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 07:35:17,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:17,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:35:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:35:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:35:17,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:17,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2020-10-29 07:35:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:17,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:17,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:17,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:35:17,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:17,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:35:17,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:17,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:17,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:17,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 07:35:17,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:17,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:17,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 580 proven. 73 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2020-10-29 07:35:17,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576630730] [2020-10-29 07:35:17,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:35:17,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:35:17,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646313948] [2020-10-29 07:35:17,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:35:17,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:35:17,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:35:17,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:35:17,759 INFO L87 Difference]: Start difference. First operand 3359 states and 3724 transitions. Second operand 7 states. [2020-10-29 07:35:19,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:35:19,916 INFO L93 Difference]: Finished difference Result 7644 states and 8635 transitions. [2020-10-29 07:35:19,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:35:19,922 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 656 [2020-10-29 07:35:19,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:35:19,944 INFO L225 Difference]: With dead ends: 7644 [2020-10-29 07:35:19,945 INFO L226 Difference]: Without dead ends: 4473 [2020-10-29 07:35:19,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:35:19,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4473 states. [2020-10-29 07:35:20,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4473 to 4105. [2020-10-29 07:35:20,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4105 states. [2020-10-29 07:35:20,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4105 states to 4105 states and 4566 transitions. [2020-10-29 07:35:20,064 INFO L78 Accepts]: Start accepts. Automaton has 4105 states and 4566 transitions. Word has length 656 [2020-10-29 07:35:20,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:35:20,066 INFO L481 AbstractCegarLoop]: Abstraction has 4105 states and 4566 transitions. [2020-10-29 07:35:20,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:35:20,066 INFO L276 IsEmpty]: Start isEmpty. Operand 4105 states and 4566 transitions. [2020-10-29 07:35:20,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2020-10-29 07:35:20,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:35:20,075 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:35:20,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:35:20,076 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:35:20,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:35:20,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1792072763, now seen corresponding path program 1 times [2020-10-29 07:35:20,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:35:20,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720607078] [2020-10-29 07:35:20,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:35:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:20,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:20,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:20,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:21,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:25,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:25,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 720 [2020-10-29 07:35:25,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:35:25,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 07:35:25,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:25,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:25,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:35:25,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 410 [2020-10-29 07:35:25,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:35:25,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:25,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:35:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:25,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:25,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:25,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:35:25,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:25,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:35:25,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:25,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:25,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:25,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:25,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:25,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:25,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:35:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:25,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:25,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:25,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:35:25,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:25,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 07:35:25,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:25,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:25,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:25,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:25,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:25,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:25,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:35:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:25,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:25,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:25,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:35:25,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:25,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:35:25,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:25,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:25,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:25,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:25,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:25,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:25,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:35:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:25,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:25,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:25,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:35:25,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:25,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 07:35:25,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:25,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:25,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:35:25,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:25,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-29 07:35:25,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:25,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-29 07:35:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:25,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:25,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:25,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:35:25,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:25,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 07:35:25,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:25,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:25,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:35:25,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:35:25,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:35:25,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:25,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2020-10-29 07:35:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:25,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:25,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:25,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:35:25,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:25,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:35:25,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:25,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:25,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:25,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 07:35:25,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:25,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:26,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 624 proven. 73 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2020-10-29 07:35:26,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720607078] [2020-10-29 07:35:26,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:35:26,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:35:26,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306081290] [2020-10-29 07:35:26,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:35:26,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:35:26,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:35:26,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:35:26,367 INFO L87 Difference]: Start difference. First operand 4105 states and 4566 transitions. Second operand 7 states. [2020-10-29 07:35:28,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:35:28,432 INFO L93 Difference]: Finished difference Result 8940 states and 10134 transitions. [2020-10-29 07:35:28,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:35:28,439 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 700 [2020-10-29 07:35:28,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:35:28,477 INFO L225 Difference]: With dead ends: 8940 [2020-10-29 07:35:28,477 INFO L226 Difference]: Without dead ends: 5207 [2020-10-29 07:35:28,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:35:28,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5207 states. [2020-10-29 07:35:28,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5207 to 4839. [2020-10-29 07:35:28,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4839 states. [2020-10-29 07:35:28,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4839 states to 4839 states and 5457 transitions. [2020-10-29 07:35:28,634 INFO L78 Accepts]: Start accepts. Automaton has 4839 states and 5457 transitions. Word has length 700 [2020-10-29 07:35:28,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:35:28,635 INFO L481 AbstractCegarLoop]: Abstraction has 4839 states and 5457 transitions. [2020-10-29 07:35:28,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:35:28,636 INFO L276 IsEmpty]: Start isEmpty. Operand 4839 states and 5457 transitions. [2020-10-29 07:35:28,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2020-10-29 07:35:28,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:35:28,649 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:35:28,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:35:28,650 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:35:28,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:35:28,650 INFO L82 PathProgramCache]: Analyzing trace with hash -2011802520, now seen corresponding path program 1 times [2020-10-29 07:35:28,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:35:28,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923195092] [2020-10-29 07:35:28,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:35:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:28,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:29,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:30,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:30,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:33,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:33,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:33,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:33,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 818 [2020-10-29 07:35:33,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:35:33,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 07:35:33,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:33,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:33,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:35:33,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 488 [2020-10-29 07:35:33,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 278 [2020-10-29 07:35:33,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:34,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:35:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:34,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:34,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:34,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:35:34,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:34,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:35:34,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:34,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:34,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:34,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:34,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:34,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:34,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:35:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:34,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:34,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:34,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:35:34,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:34,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 07:35:34,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:34,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:34,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:34,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:34,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:34,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:34,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:35:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:34,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:34,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:34,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:35:34,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:34,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:35:34,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:34,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:34,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:34,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:34,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:34,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:34,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:35:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:34,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:34,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:34,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:35:34,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:34,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 07:35:34,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:34,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:34,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:34,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:34,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:34,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:34,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-29 07:35:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:34,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:34,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:34,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:35:34,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:34,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 07:35:34,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:34,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:34,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:35:34,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:34,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:35:34,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:34,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2020-10-29 07:35:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:34,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:34,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:34,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:35:34,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:34,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-29 07:35:34,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:34,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:34,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:35:34,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:35:34,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:35:34,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:34,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 659 [2020-10-29 07:35:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:34,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:34,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:34,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 07:35:34,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:34,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 07:35:34,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:34,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:34,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:35:34,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:35:34,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:35:34,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:35:35,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1738 backedges. 1176 proven. 6 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2020-10-29 07:35:35,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923195092] [2020-10-29 07:35:35,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:35:35,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 07:35:35,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204539297] [2020-10-29 07:35:35,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 07:35:35,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:35:35,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 07:35:35,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:35:35,437 INFO L87 Difference]: Start difference. First operand 4839 states and 5457 transitions. Second operand 10 states. [2020-10-29 07:35:39,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:35:39,078 INFO L93 Difference]: Finished difference Result 10797 states and 12384 transitions. [2020-10-29 07:35:39,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 07:35:39,078 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 796 [2020-10-29 07:35:39,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:35:39,103 INFO L225 Difference]: With dead ends: 10797 [2020-10-29 07:35:39,103 INFO L226 Difference]: Without dead ends: 6330 [2020-10-29 07:35:39,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2020-10-29 07:35:39,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6330 states. [2020-10-29 07:35:39,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6330 to 5769. [2020-10-29 07:35:39,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5769 states. [2020-10-29 07:35:39,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5769 states to 5769 states and 6646 transitions. [2020-10-29 07:35:39,270 INFO L78 Accepts]: Start accepts. Automaton has 5769 states and 6646 transitions. Word has length 796 [2020-10-29 07:35:39,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:35:39,272 INFO L481 AbstractCegarLoop]: Abstraction has 5769 states and 6646 transitions. [2020-10-29 07:35:39,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 07:35:39,272 INFO L276 IsEmpty]: Start isEmpty. Operand 5769 states and 6646 transitions. [2020-10-29 07:35:39,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 897 [2020-10-29 07:35:39,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:35:39,290 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:35:39,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 07:35:39,290 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:35:39,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:35:39,291 INFO L82 PathProgramCache]: Analyzing trace with hash -778207561, now seen corresponding path program 1 times [2020-10-29 07:35:39,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:35:39,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350350608] [2020-10-29 07:35:39,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:35:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:39,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:39,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:40,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:41,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:44,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:44,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 920 [2020-10-29 07:35:44,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:35:44,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-29 07:35:44,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:44,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:44,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:35:44,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-29 07:35:44,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:35:44,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:44,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:35:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:44,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:44,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:44,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:35:44,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:44,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:35:44,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:44,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:44,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:44,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:44,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:44,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:44,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:35:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:44,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:44,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:44,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:35:44,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:44,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 07:35:44,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:44,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:44,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:44,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:44,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:44,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:44,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:35:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:44,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:44,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:44,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:35:44,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:44,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 07:35:44,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:44,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:44,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:35:44,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:44,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 07:35:44,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:44,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:35:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:44,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:44,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:44,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:35:44,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:44,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 07:35:44,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:44,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:44,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:35:44,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:35:44,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-29 07:35:44,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:45,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-29 07:35:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:45,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:45,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:45,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:35:45,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:45,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:35:45,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:45,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:45,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:45,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 07:35:45,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:45,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:45,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2020-10-29 07:35:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:45,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:45,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:45,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:35:45,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:45,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 07:35:45,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:45,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-29 07:35:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:45,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:45,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 659 [2020-10-29 07:35:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:45,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:45,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:45,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:35:45,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:45,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:35:45,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:45,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:45,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:45,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 07:35:45,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:45,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:45,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 742 [2020-10-29 07:35:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:45,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:45,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:45,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:35:45,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:45,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 07:35:45,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:45,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:45,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:45,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-29 07:35:45,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:45,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:46,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2337 backedges. 551 proven. 437 refuted. 0 times theorem prover too weak. 1349 trivial. 0 not checked. [2020-10-29 07:35:46,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350350608] [2020-10-29 07:35:46,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:35:46,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:35:46,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619142301] [2020-10-29 07:35:46,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:35:46,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:35:46,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:35:46,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:35:46,057 INFO L87 Difference]: Start difference. First operand 5769 states and 6646 transitions. Second operand 7 states. [2020-10-29 07:35:47,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:35:47,761 INFO L93 Difference]: Finished difference Result 11900 states and 13846 transitions. [2020-10-29 07:35:47,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:35:47,762 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 896 [2020-10-29 07:35:47,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:35:47,781 INFO L225 Difference]: With dead ends: 11900 [2020-10-29 07:35:47,781 INFO L226 Difference]: Without dead ends: 6503 [2020-10-29 07:35:47,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-29 07:35:47,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6503 states. [2020-10-29 07:35:47,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6503 to 6497. [2020-10-29 07:35:47,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6497 states. [2020-10-29 07:35:47,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6497 states to 6497 states and 7472 transitions. [2020-10-29 07:35:47,947 INFO L78 Accepts]: Start accepts. Automaton has 6497 states and 7472 transitions. Word has length 896 [2020-10-29 07:35:47,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:35:47,948 INFO L481 AbstractCegarLoop]: Abstraction has 6497 states and 7472 transitions. [2020-10-29 07:35:47,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:35:47,948 INFO L276 IsEmpty]: Start isEmpty. Operand 6497 states and 7472 transitions. [2020-10-29 07:35:47,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 920 [2020-10-29 07:35:47,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:35:47,964 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:35:47,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 07:35:47,964 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:35:47,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:35:47,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1374428801, now seen corresponding path program 1 times [2020-10-29 07:35:47,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:35:47,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580864021] [2020-10-29 07:35:47,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:35:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:48,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:48,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:48,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:50,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:52,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:53,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:53,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 943 [2020-10-29 07:35:53,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:35:53,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-29 07:35:53,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:53,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:53,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:35:53,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-29 07:35:53,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:35:53,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:53,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:35:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:53,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:53,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:53,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:35:53,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:53,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:35:53,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:53,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:53,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:53,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:53,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:35:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:53,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:53,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:53,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:35:53,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:53,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:35:53,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:53,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:53,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:53,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:53,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:53,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:53,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:35:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:53,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:53,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:53,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:35:53,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:53,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:35:53,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:53,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:53,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:53,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:53,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:53,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:53,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:35:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:53,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:53,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:53,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:35:53,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:53,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:35:53,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:53,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:53,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:53,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:53,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:53,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:53,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:35:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:53,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:53,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:53,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 07:35:53,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:53,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 07:35:53,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:53,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:53,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:35:53,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:53,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 07:35:53,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:53,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-29 07:35:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:53,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:53,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:53,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:35:53,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:53,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 07:35:53,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:53,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:53,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:35:53,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:35:53,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:35:53,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:53,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-10-29 07:35:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:53,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:53,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:53,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:35:53,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:53,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 07:35:53,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:53,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:53,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:53,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 07:35:53,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:53,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:54,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-10-29 07:35:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:54,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:54,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:54,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:35:54,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:54,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:35:54,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:54,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:54,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:54,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-29 07:35:54,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:54,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:54,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2510 backedges. 831 proven. 190 refuted. 0 times theorem prover too weak. 1489 trivial. 0 not checked. [2020-10-29 07:35:54,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580864021] [2020-10-29 07:35:54,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:35:54,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:35:54,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276918382] [2020-10-29 07:35:54,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:35:54,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:35:54,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:35:54,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:35:54,643 INFO L87 Difference]: Start difference. First operand 6497 states and 7472 transitions. Second operand 7 states. [2020-10-29 07:35:56,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:35:56,546 INFO L93 Difference]: Finished difference Result 12990 states and 14969 transitions. [2020-10-29 07:35:56,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:35:56,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 919 [2020-10-29 07:35:56,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:35:56,573 INFO L225 Difference]: With dead ends: 12990 [2020-10-29 07:35:56,574 INFO L226 Difference]: Without dead ends: 6865 [2020-10-29 07:35:56,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:35:56,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6865 states. [2020-10-29 07:35:56,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6865 to 6497. [2020-10-29 07:35:56,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6497 states. [2020-10-29 07:35:56,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6497 states to 6497 states and 7472 transitions. [2020-10-29 07:35:56,754 INFO L78 Accepts]: Start accepts. Automaton has 6497 states and 7472 transitions. Word has length 919 [2020-10-29 07:35:56,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:35:56,755 INFO L481 AbstractCegarLoop]: Abstraction has 6497 states and 7472 transitions. [2020-10-29 07:35:56,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:35:56,755 INFO L276 IsEmpty]: Start isEmpty. Operand 6497 states and 7472 transitions. [2020-10-29 07:35:56,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2020-10-29 07:35:56,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:35:56,775 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:35:56,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 07:35:56,777 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:35:56,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:35:56,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1951106694, now seen corresponding path program 1 times [2020-10-29 07:35:56,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:35:56,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577117985] [2020-10-29 07:35:56,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:35:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:57,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:57,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:57,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:01,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:01,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1021 [2020-10-29 07:36:01,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:36:01,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 07:36:01,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:01,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:01,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:01,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 770 [2020-10-29 07:36:01,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:36:01,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:02,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:36:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:02,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:02,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:02,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:36:02,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:02,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:36:02,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:02,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:02,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:02,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:02,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:02,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:02,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:36:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:02,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:02,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:02,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:36:02,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:02,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:36:02,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:02,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:02,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:02,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:02,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:02,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:02,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:36:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:02,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:02,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:02,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:36:02,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:02,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:36:02,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:02,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:02,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:02,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:02,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:02,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:02,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:36:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:02,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:02,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:02,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:36:02,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:02,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:36:02,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:02,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:02,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:02,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:02,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:02,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:36:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:02,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:02,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:02,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 07:36:02,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:02,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:36:02,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:02,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:02,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:02,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:02,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:02,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:02,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-29 07:36:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:02,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:02,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:02,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:36:02,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:02,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:36:02,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:02,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:02,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:02,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:02,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-29 07:36:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:02,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:02,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:02,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:36:02,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:02,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 07:36:02,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:02,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:36:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-29 07:36:02,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:02,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-10-29 07:36:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:02,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:02,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:02,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:36:02,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:02,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 07:36:02,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:02,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:02,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:02,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:36:02,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:36:02,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:02,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-29 07:36:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:02,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:02,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:02,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:36:02,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:02,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 07:36:02,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:02,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:02,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:02,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-29 07:36:02,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:02,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:03,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3085 backedges. 866 proven. 82 refuted. 0 times theorem prover too weak. 2137 trivial. 0 not checked. [2020-10-29 07:36:03,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577117985] [2020-10-29 07:36:03,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:36:03,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:36:03,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111772677] [2020-10-29 07:36:03,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:36:03,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:36:03,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:36:03,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:36:03,477 INFO L87 Difference]: Start difference. First operand 6497 states and 7472 transitions. Second operand 7 states. [2020-10-29 07:36:05,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:36:05,449 INFO L93 Difference]: Finished difference Result 13912 states and 16326 transitions. [2020-10-29 07:36:05,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:36:05,450 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 995 [2020-10-29 07:36:05,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:36:05,486 INFO L225 Difference]: With dead ends: 13912 [2020-10-29 07:36:05,487 INFO L226 Difference]: Without dead ends: 7787 [2020-10-29 07:36:05,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:36:05,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7787 states. [2020-10-29 07:36:05,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7787 to 7783. [2020-10-29 07:36:05,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7783 states. [2020-10-29 07:36:05,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7783 states to 7783 states and 8972 transitions. [2020-10-29 07:36:05,682 INFO L78 Accepts]: Start accepts. Automaton has 7783 states and 8972 transitions. Word has length 995 [2020-10-29 07:36:05,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:36:05,683 INFO L481 AbstractCegarLoop]: Abstraction has 7783 states and 8972 transitions. [2020-10-29 07:36:05,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:36:05,683 INFO L276 IsEmpty]: Start isEmpty. Operand 7783 states and 8972 transitions. [2020-10-29 07:36:05,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1132 [2020-10-29 07:36:05,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:36:05,707 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 4, 4, 4, 4, 4, 4, 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] [2020-10-29 07:36:05,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 07:36:05,707 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:36:05,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:36:05,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1591641137, now seen corresponding path program 1 times [2020-10-29 07:36:05,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:36:05,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076263490] [2020-10-29 07:36:05,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:36:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:06,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:06,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:06,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:08,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:10,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:10,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:10,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1159 [2020-10-29 07:36:10,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:36:10,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 07:36:10,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:10,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:10,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 07:36:10,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 607 [2020-10-29 07:36:10,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 387 [2020-10-29 07:36:10,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:11,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:36:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:11,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:11,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:11,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:36:11,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:11,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:36:11,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:11,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:11,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:11,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:11,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:11,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:11,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:36:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:11,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:11,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:11,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:36:11,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:11,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:36:11,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:11,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:11,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:11,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:11,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:11,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:11,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:36:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:11,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:11,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:11,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:36:11,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:11,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:36:11,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:11,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:11,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:11,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:11,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:11,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:11,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:36:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:11,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:11,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:11,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:36:11,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:11,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:36:11,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:11,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:11,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:11,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:11,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:11,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:11,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:36:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:11,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:11,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:11,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:36:11,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:11,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:36:11,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:11,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:11,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:11,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:11,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:11,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:11,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-29 07:36:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:11,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:11,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:11,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:36:11,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:11,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 07:36:11,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:11,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:11,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:36:11,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:11,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:36:11,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:11,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-29 07:36:11,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:11,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:11,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:11,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:36:11,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:11,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-29 07:36:11,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:11,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:11,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:36:11,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:36:11,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:36:11,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:11,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 776 [2020-10-29 07:36:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:11,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:12,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:12,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:36:12,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:12,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-29 07:36:12,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:12,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:36:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 07:36:12,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:12,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 894 [2020-10-29 07:36:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:12,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:12,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:12,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:36:12,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:12,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 07:36:12,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:12,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:12,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:12,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:36:12,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:36:12,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:12,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 977 [2020-10-29 07:36:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:12,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:12,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:12,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:36:12,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:12,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:36:12,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:12,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:12,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:12,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-29 07:36:12,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:12,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:13,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3988 backedges. 2052 proven. 456 refuted. 0 times theorem prover too weak. 1480 trivial. 0 not checked. [2020-10-29 07:36:13,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076263490] [2020-10-29 07:36:13,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:36:13,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 07:36:13,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748994296] [2020-10-29 07:36:13,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 07:36:13,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:36:13,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 07:36:13,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:36:13,561 INFO L87 Difference]: Start difference. First operand 7783 states and 8972 transitions. Second operand 11 states. [2020-10-29 07:36:17,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:36:17,214 INFO L93 Difference]: Finished difference Result 15571 states and 17995 transitions. [2020-10-29 07:36:17,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 07:36:17,215 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1131 [2020-10-29 07:36:17,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:36:17,243 INFO L225 Difference]: With dead ends: 15571 [2020-10-29 07:36:17,244 INFO L226 Difference]: Without dead ends: 8160 [2020-10-29 07:36:17,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2020-10-29 07:36:17,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8160 states. [2020-10-29 07:36:17,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8160 to 7963. [2020-10-29 07:36:17,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7963 states. [2020-10-29 07:36:17,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7963 states to 7963 states and 9153 transitions. [2020-10-29 07:36:17,441 INFO L78 Accepts]: Start accepts. Automaton has 7963 states and 9153 transitions. Word has length 1131 [2020-10-29 07:36:17,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:36:17,442 INFO L481 AbstractCegarLoop]: Abstraction has 7963 states and 9153 transitions. [2020-10-29 07:36:17,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 07:36:17,442 INFO L276 IsEmpty]: Start isEmpty. Operand 7963 states and 9153 transitions. [2020-10-29 07:36:17,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1253 [2020-10-29 07:36:17,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:36:17,465 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:36:17,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 07:36:17,466 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:36:17,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:36:17,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1565291511, now seen corresponding path program 1 times [2020-10-29 07:36:17,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:36:17,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333456962] [2020-10-29 07:36:17,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:36:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:17,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:18,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:18,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:21,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:22,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:22,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1280 [2020-10-29 07:36:22,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:36:22,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 07:36:22,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:22,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 07:36:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 607 [2020-10-29 07:36:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 306 [2020-10-29 07:36:22,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:22,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:36:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:22,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:22,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:22,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:36:22,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:22,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:36:22,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:22,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:22,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:22,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:22,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:22,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:22,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:36:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:22,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:23,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:23,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:36:23,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:23,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:36:23,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:23,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:23,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:23,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:23,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:23,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:23,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:36:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:23,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:23,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:23,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:36:23,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:23,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 07:36:23,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:23,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:23,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:23,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:23,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:23,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:23,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:36:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:23,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:23,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:23,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:36:23,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:23,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 07:36:23,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:23,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:23,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:23,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:23,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:23,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:23,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:36:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:23,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:23,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:23,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:36:23,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:23,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 07:36:23,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:23,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:23,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:23,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:23,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:23,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:23,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-29 07:36:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:23,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:23,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:23,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:36:23,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:23,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:36:23,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:23,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:36:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:23,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:36:23,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:23,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-29 07:36:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:23,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:23,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:23,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:36:23,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:23,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-29 07:36:23,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:23,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:23,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:36:23,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:36:23,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:36:23,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:23,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 776 [2020-10-29 07:36:23,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:23,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:23,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:24,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:24,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:36:24,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:36:24,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-10-29 07:36:24,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:24,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:24,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:24,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:36:24,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 07:36:24,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:24,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 916 [2020-10-29 07:36:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:24,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:24,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:24,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:36:24,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:24,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 07:36:24,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:24,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:24,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:24,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-29 07:36:24,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:24,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:24,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1098 [2020-10-29 07:36:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:24,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:24,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:24,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:36:24,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:24,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:36:24,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:24,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:24,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:24,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-29 07:36:24,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:24,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:25,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4394 backedges. 1711 proven. 531 refuted. 0 times theorem prover too weak. 2152 trivial. 0 not checked. [2020-10-29 07:36:25,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333456962] [2020-10-29 07:36:25,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:36:25,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 07:36:25,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992140628] [2020-10-29 07:36:25,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 07:36:25,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:36:25,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 07:36:25,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:36:25,640 INFO L87 Difference]: Start difference. First operand 7963 states and 9153 transitions. Second operand 11 states. [2020-10-29 07:36:29,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:36:29,896 INFO L93 Difference]: Finished difference Result 15761 states and 18155 transitions. [2020-10-29 07:36:29,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 07:36:29,902 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1252 [2020-10-29 07:36:29,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:36:29,926 INFO L225 Difference]: With dead ends: 15761 [2020-10-29 07:36:29,926 INFO L226 Difference]: Without dead ends: 8170 [2020-10-29 07:36:29,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2020-10-29 07:36:29,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8170 states. [2020-10-29 07:36:30,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8170 to 7975. [2020-10-29 07:36:30,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7975 states. [2020-10-29 07:36:30,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7975 states to 7975 states and 9158 transitions. [2020-10-29 07:36:30,129 INFO L78 Accepts]: Start accepts. Automaton has 7975 states and 9158 transitions. Word has length 1252 [2020-10-29 07:36:30,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:36:30,131 INFO L481 AbstractCegarLoop]: Abstraction has 7975 states and 9158 transitions. [2020-10-29 07:36:30,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 07:36:30,131 INFO L276 IsEmpty]: Start isEmpty. Operand 7975 states and 9158 transitions. [2020-10-29 07:36:30,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1371 [2020-10-29 07:36:30,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:36:30,160 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:36:30,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 07:36:30,161 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:36:30,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:36:30,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1428262434, now seen corresponding path program 1 times [2020-10-29 07:36:30,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:36:30,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513431777] [2020-10-29 07:36:30,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:36:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:30,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:30,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:33,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:34,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:35,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:35,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1400 [2020-10-29 07:36:35,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:36:35,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-29 07:36:35,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:35,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:35,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:35,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-29 07:36:35,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:36:35,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:35,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:36:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:35,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:35,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:35,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:36:35,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:35,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:36:35,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:35,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:35,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:35,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:35,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:35,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:35,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:36:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:35,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:35,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:35,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:36:35,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:35,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:36:35,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:35,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:35,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:35,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:35,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:35,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:35,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:36:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:35,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:35,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:35,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:36:35,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:35,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:36:35,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:35,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:35,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:35,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:35,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:35,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:35,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:36:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:35,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:35,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:35,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:36:35,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:35,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 07:36:35,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:35,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:35,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:36:35,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:35,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:36:35,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:35,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:36:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:35,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:35,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:35,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:36:35,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:35,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-29 07:36:35,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:35,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:35,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:35,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:36:35,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-29 07:36:35,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:36,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-29 07:36:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:36,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:36,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:36,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:36:36,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:36,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 07:36:36,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:36,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:36,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:36,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 07:36:36,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:36,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:36,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-29 07:36:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:36,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:36,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:36,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:36:36,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:36,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 07:36:36,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:36,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:36,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:36,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-29 07:36:36,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:36,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:36,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 776 [2020-10-29 07:36:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:36,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:36,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:36,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:36:36,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:36,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:36:36,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:36,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:36,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:36,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-29 07:36:36,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:36,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:36,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 894 [2020-10-29 07:36:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:36,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:36,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:36,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:36:36,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:36,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 07:36:36,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:36,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:36,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:36,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-29 07:36:36,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:36,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:36,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1034 [2020-10-29 07:36:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:36,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:36,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:36,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:36:36,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:36,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 07:36:36,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:36,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:36,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:36,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-29 07:36:36,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:36,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:36,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1216 [2020-10-29 07:36:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:36,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:36,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:36,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:36:36,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:36,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:36:36,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:36,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:36,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:36,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-29 07:36:36,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:36,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:37,901 INFO L134 CoverageAnalysis]: Checked inductivity of 5432 backedges. 839 proven. 783 refuted. 0 times theorem prover too weak. 3810 trivial. 0 not checked. [2020-10-29 07:36:37,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513431777] [2020-10-29 07:36:37,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:36:37,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:36:37,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042273647] [2020-10-29 07:36:37,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:36:37,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:36:37,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:36:37,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:36:37,903 INFO L87 Difference]: Start difference. First operand 7975 states and 9158 transitions. Second operand 7 states. [2020-10-29 07:36:40,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:36:40,282 INFO L93 Difference]: Finished difference Result 15950 states and 18396 transitions. [2020-10-29 07:36:40,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:36:40,282 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1370 [2020-10-29 07:36:40,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:36:40,308 INFO L225 Difference]: With dead ends: 15950 [2020-10-29 07:36:40,308 INFO L226 Difference]: Without dead ends: 8347 [2020-10-29 07:36:40,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:36:40,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8347 states. [2020-10-29 07:36:40,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8347 to 8341. [2020-10-29 07:36:40,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8341 states. [2020-10-29 07:36:40,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8341 states to 8341 states and 9502 transitions. [2020-10-29 07:36:40,525 INFO L78 Accepts]: Start accepts. Automaton has 8341 states and 9502 transitions. Word has length 1370 [2020-10-29 07:36:40,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:36:40,526 INFO L481 AbstractCegarLoop]: Abstraction has 8341 states and 9502 transitions. [2020-10-29 07:36:40,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:36:40,527 INFO L276 IsEmpty]: Start isEmpty. Operand 8341 states and 9502 transitions. [2020-10-29 07:36:40,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1452 [2020-10-29 07:36:40,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:36:40,556 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:36:40,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 07:36:40,556 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:36:40,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:36:40,557 INFO L82 PathProgramCache]: Analyzing trace with hash 923484293, now seen corresponding path program 1 times [2020-10-29 07:36:40,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:36:40,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361920524] [2020-10-29 07:36:40,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:36:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:41,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:42,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:42,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:42,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1483 [2020-10-29 07:36:42,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:36:42,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1574 [2020-10-29 07:36:42,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:42,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:42,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:42,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1430 [2020-10-29 07:36:42,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 07:36:42,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:42,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:36:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:42,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:42,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:42,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:36:42,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:42,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:36:42,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:42,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:42,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:42,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:36:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:42,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:42,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:42,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:36:42,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:42,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 07:36:42,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:42,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:42,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:42,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:42,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:42,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:36:42,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:36:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:42,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:43,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:43,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:36:43,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:43,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:36:43,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:43,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:43,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:43,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:43,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:43,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:43,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:36:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:43,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:43,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:43,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:36:43,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:43,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 07:36:43,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:43,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:43,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:43,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:43,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:43,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:43,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:36:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:43,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:43,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:43,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:36:43,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:43,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:36:43,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:43,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:43,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:43,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:43,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:43,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:43,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:36:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:43,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:43,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:43,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:36:43,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:43,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 07:36:43,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:43,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:43,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:43,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:43,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:43,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:43,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:36:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:43,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:43,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:43,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:36:43,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:43,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-29 07:36:43,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:43,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:43,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:43,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:43,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:43,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:43,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:36:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:43,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:43,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:43,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:36:43,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:43,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 07:36:43,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:43,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:43,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:43,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:43,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:43,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:43,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:36:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:43,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:43,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:43,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:36:43,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:43,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:36:43,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:43,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:43,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:43,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:43,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:43,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:43,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-29 07:36:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:43,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:43,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:43,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:36:43,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:43,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:36:43,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:43,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:43,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:43,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:43,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:43,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:43,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-29 07:36:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:43,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:43,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:43,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:36:43,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:43,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:36:43,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:43,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:43,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:43,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:43,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:43,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:43,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-29 07:36:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:43,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:43,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:43,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:36:43,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:43,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 07:36:43,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:43,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:43,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:36:43,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:43,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:36:43,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:45,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6280 backedges. 492 proven. 11 refuted. 0 times theorem prover too weak. 5777 trivial. 0 not checked. [2020-10-29 07:36:45,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361920524] [2020-10-29 07:36:45,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:36:45,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:36:45,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137709948] [2020-10-29 07:36:45,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:36:45,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:36:45,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:36:45,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:36:45,273 INFO L87 Difference]: Start difference. First operand 8341 states and 9502 transitions. Second operand 5 states. [2020-10-29 07:36:46,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:36:46,497 INFO L93 Difference]: Finished difference Result 16346 states and 18704 transitions. [2020-10-29 07:36:46,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:36:46,498 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1451 [2020-10-29 07:36:46,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:36:46,517 INFO L225 Difference]: With dead ends: 16346 [2020-10-29 07:36:46,517 INFO L226 Difference]: Without dead ends: 8345 [2020-10-29 07:36:46,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:36:46,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8345 states. [2020-10-29 07:36:46,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8345 to 8339. [2020-10-29 07:36:46,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8339 states. [2020-10-29 07:36:46,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8339 states to 8339 states and 9479 transitions. [2020-10-29 07:36:46,706 INFO L78 Accepts]: Start accepts. Automaton has 8339 states and 9479 transitions. Word has length 1451 [2020-10-29 07:36:46,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:36:46,708 INFO L481 AbstractCegarLoop]: Abstraction has 8339 states and 9479 transitions. [2020-10-29 07:36:46,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:36:46,708 INFO L276 IsEmpty]: Start isEmpty. Operand 8339 states and 9479 transitions. [2020-10-29 07:36:46,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1483 [2020-10-29 07:36:46,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:36:46,737 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:36:46,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 07:36:46,738 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:36:46,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:36:46,738 INFO L82 PathProgramCache]: Analyzing trace with hash -638540156, now seen corresponding path program 1 times [2020-10-29 07:36:46,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:36:46,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652361812] [2020-10-29 07:36:46,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:36:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:47,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:47,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:47,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:48,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:52,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:52,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1516 [2020-10-29 07:36:52,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:36:52,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5114 [2020-10-29 07:36:52,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:52,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:36:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1133 [2020-10-29 07:36:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-29 07:36:52,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:52,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:36:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:52,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:52,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:52,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:36:52,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:52,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:36:52,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:52,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:52,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:52,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:52,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:52,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:52,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:36:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:52,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:52,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:52,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:36:52,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:52,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:36:52,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:52,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:52,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:52,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:52,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:52,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:52,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:36:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:52,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:52,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:52,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:36:52,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:52,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:36:52,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:52,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:52,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:52,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:52,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:52,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:52,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:36:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:52,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:52,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:52,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:36:52,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:52,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:36:52,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:52,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:52,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:52,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:52,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:52,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:52,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:36:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:52,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:52,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:52,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:36:52,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:52,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:36:52,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:52,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:52,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:52,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:52,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:52,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:52,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:36:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:52,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:52,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:52,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:36:52,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:52,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 07:36:52,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:52,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:52,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:52,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:52,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:52,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:52,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:36:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:52,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:52,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:52,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:36:52,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:52,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:36:52,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:52,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:52,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:52,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:52,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:52,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:52,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:36:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:52,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:52,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:52,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:36:52,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:52,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 07:36:52,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:52,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:52,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:52,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:52,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:52,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:52,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:36:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:52,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:52,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:52,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:36:52,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:52,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:36:52,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:52,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:52,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:52,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:52,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:52,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:36:52,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-29 07:36:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:52,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:53,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:53,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:36:53,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:53,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 07:36:53,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:53,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:53,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:36:53,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:53,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 07:36:53,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:53,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-29 07:36:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:53,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:53,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:53,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:53,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:36:53,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:36:53,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-29 07:36:53,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:53,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:53,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:53,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:36:53,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 07:36:53,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:53,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1233 [2020-10-29 07:36:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:53,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:53,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:53,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 07:36:53,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:53,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 07:36:53,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:53,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:53,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:53,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:36:53,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 07:36:53,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:53,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1345 [2020-10-29 07:36:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:53,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:53,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:53,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 07:36:53,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:53,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 07:36:53,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:53,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:53,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:53,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-29 07:36:53,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:53,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 7190 backedges. 2459 proven. 186 refuted. 0 times theorem prover too weak. 4545 trivial. 0 not checked. [2020-10-29 07:36:55,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652361812] [2020-10-29 07:36:55,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:36:55,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:36:55,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155225551] [2020-10-29 07:36:55,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:36:55,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:36:55,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:36:55,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:36:55,017 INFO L87 Difference]: Start difference. First operand 8339 states and 9479 transitions. Second operand 8 states. [2020-10-29 07:36:58,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:36:58,396 INFO L93 Difference]: Finished difference Result 17236 states and 19620 transitions. [2020-10-29 07:36:58,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 07:36:58,397 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1482 [2020-10-29 07:36:58,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:36:58,421 INFO L225 Difference]: With dead ends: 17236 [2020-10-29 07:36:58,421 INFO L226 Difference]: Without dead ends: 9269 [2020-10-29 07:36:58,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 07:36:58,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9269 states. [2020-10-29 07:36:58,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9269 to 8523. [2020-10-29 07:36:58,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8523 states. [2020-10-29 07:36:58,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8523 states to 8523 states and 9628 transitions. [2020-10-29 07:36:58,624 INFO L78 Accepts]: Start accepts. Automaton has 8523 states and 9628 transitions. Word has length 1482 [2020-10-29 07:36:58,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:36:58,626 INFO L481 AbstractCegarLoop]: Abstraction has 8523 states and 9628 transitions. [2020-10-29 07:36:58,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:36:58,626 INFO L276 IsEmpty]: Start isEmpty. Operand 8523 states and 9628 transitions. [2020-10-29 07:36:58,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1519 [2020-10-29 07:36:58,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:36:58,654 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 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, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:36:58,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 07:36:58,655 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:36:58,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:36:58,655 INFO L82 PathProgramCache]: Analyzing trace with hash 152027135, now seen corresponding path program 1 times [2020-10-29 07:36:58,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:36:58,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871288182] [2020-10-29 07:36:58,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:36:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:59,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:00,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:01,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:01,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1550 [2020-10-29 07:37:01,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:37:01,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2867 [2020-10-29 07:37:01,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:01,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:01,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:01,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1497 [2020-10-29 07:37:01,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 07:37:01,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:02,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:37:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:02,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:02,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:02,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:37:02,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:02,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:37:02,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:02,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:02,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:02,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:02,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:02,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:02,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:37:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:02,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:02,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:02,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:37:02,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:02,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 07:37:02,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:02,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:02,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:02,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:02,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:02,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:02,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:37:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:02,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:02,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:02,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:37:02,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:02,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:37:02,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:02,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:02,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:02,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:02,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:02,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:02,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:37:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:02,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:02,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:02,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:37:02,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:02,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 07:37:02,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:02,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:02,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:02,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:02,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:02,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:02,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:37:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:02,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:02,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:02,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:37:02,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:02,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:37:02,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:02,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:02,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:02,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:02,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:02,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:02,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:37:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:02,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:02,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:02,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:37:02,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:02,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 07:37:02,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:02,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:02,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:02,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:02,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:02,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:02,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:37:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:02,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:02,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:02,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:37:02,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:02,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:37:02,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:02,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:02,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:02,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:02,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:02,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:02,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:37:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:02,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:02,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:02,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:37:02,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:02,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 07:37:02,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:02,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:02,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:02,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:02,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:02,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:02,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:37:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:02,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:02,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:02,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:37:02,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:02,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:37:02,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:02,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:02,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:02,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:02,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:02,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:02,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-29 07:37:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:02,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:02,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:02,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:37:02,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:02,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 07:37:02,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:02,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:02,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:02,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:02,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:02,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:02,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-29 07:37:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:02,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:02,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:02,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:37:02,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:02,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 07:37:02,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:02,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:02,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:02,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:02,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:02,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:02,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-29 07:37:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:02,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:03,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:03,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-29 07:37:03,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:03,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 07:37:03,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:03,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:03,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:37:03,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:03,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-29 07:37:03,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:04,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6522 backedges. 492 proven. 11 refuted. 0 times theorem prover too weak. 6019 trivial. 0 not checked. [2020-10-29 07:37:04,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871288182] [2020-10-29 07:37:04,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:37:04,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:37:04,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390920292] [2020-10-29 07:37:04,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:37:04,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:37:04,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:37:04,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:37:04,248 INFO L87 Difference]: Start difference. First operand 8523 states and 9628 transitions. Second operand 5 states. [2020-10-29 07:37:05,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:37:05,986 INFO L93 Difference]: Finished difference Result 16494 states and 18697 transitions. [2020-10-29 07:37:05,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:37:05,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1518 [2020-10-29 07:37:05,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:37:06,007 INFO L225 Difference]: With dead ends: 16494 [2020-10-29 07:37:06,007 INFO L226 Difference]: Without dead ends: 8343 [2020-10-29 07:37:06,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:37:06,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8343 states. [2020-10-29 07:37:06,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8343 to 7973. [2020-10-29 07:37:06,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7973 states. [2020-10-29 07:37:06,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7973 states to 7973 states and 8984 transitions. [2020-10-29 07:37:06,198 INFO L78 Accepts]: Start accepts. Automaton has 7973 states and 8984 transitions. Word has length 1518 [2020-10-29 07:37:06,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:37:06,203 INFO L481 AbstractCegarLoop]: Abstraction has 7973 states and 8984 transitions. [2020-10-29 07:37:06,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:37:06,203 INFO L276 IsEmpty]: Start isEmpty. Operand 7973 states and 8984 transitions. [2020-10-29 07:37:06,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1588 [2020-10-29 07:37:06,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:37:06,236 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:37:06,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 07:37:06,236 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:37:06,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:37:06,238 INFO L82 PathProgramCache]: Analyzing trace with hash 678082658, now seen corresponding path program 1 times [2020-10-29 07:37:06,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:37:06,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234930894] [2020-10-29 07:37:06,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:37:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:06,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:06,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:10,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:11,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:11,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1621 [2020-10-29 07:37:11,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:37:11,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 07:37:11,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:11,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:11,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:11,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1432 [2020-10-29 07:37:11,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 07:37:11,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:11,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:37:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:11,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:11,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:11,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:37:11,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:11,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:37:11,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:11,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:11,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:11,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:37:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:11,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:11,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:11,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:37:11,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:11,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:37:11,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:11,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:11,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:11,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:11,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:11,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:11,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:37:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:11,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:11,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:11,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:37:11,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:11,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 07:37:11,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:11,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:11,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:11,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:11,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:11,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:11,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:37:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:11,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:11,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:11,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:37:11,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:11,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:37:11,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:11,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:12,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:12,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:12,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:12,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:12,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:37:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:12,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:12,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:12,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:37:12,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:12,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:37:12,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:12,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:12,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:12,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:37:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:12,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:12,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:12,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:37:12,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:12,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:37:12,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:12,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:12,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:12,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:12,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:12,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:12,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:37:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:12,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:12,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:12,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:37:12,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:12,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:37:12,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:12,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:12,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:12,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:12,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:12,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:12,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:37:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:12,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:12,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:12,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:37:12,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:12,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:37:12,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:12,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:12,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:12,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:12,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:12,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:37:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:12,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:12,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:12,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:37:12,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:12,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:37:12,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:12,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:12,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:12,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:12,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:12,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:12,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-29 07:37:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:12,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:12,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:12,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:37:12,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:12,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 07:37:12,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:12,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:12,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:12,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:12,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:12,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:37:12,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-29 07:37:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:12,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:12,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:12,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:37:12,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:12,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 07:37:12,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:12,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:12,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:12,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:12,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:12,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:12,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-29 07:37:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:12,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:12,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:12,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 07:37:12,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:12,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 07:37:12,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:12,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:12,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:37:12,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:12,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 07:37:12,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:12,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1410 [2020-10-29 07:37:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:12,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:13,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:13,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 07:37:13,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:13,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-29 07:37:13,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:13,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:13,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:13,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:37:13,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 07:37:13,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:14,908 INFO L134 CoverageAnalysis]: Checked inductivity of 7595 backedges. 1793 proven. 2 refuted. 0 times theorem prover too weak. 5800 trivial. 0 not checked. [2020-10-29 07:37:14,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234930894] [2020-10-29 07:37:14,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:37:14,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:37:14,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8297212] [2020-10-29 07:37:14,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:37:14,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:37:14,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:37:14,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:37:14,911 INFO L87 Difference]: Start difference. First operand 7973 states and 8984 transitions. Second operand 7 states. [2020-10-29 07:37:17,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:37:17,147 INFO L93 Difference]: Finished difference Result 15766 states and 17823 transitions. [2020-10-29 07:37:17,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:37:17,147 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1587 [2020-10-29 07:37:17,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:37:17,166 INFO L225 Difference]: With dead ends: 15766 [2020-10-29 07:37:17,166 INFO L226 Difference]: Without dead ends: 8165 [2020-10-29 07:37:17,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:37:17,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8165 states. [2020-10-29 07:37:17,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8165 to 8155. [2020-10-29 07:37:17,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8155 states. [2020-10-29 07:37:17,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8155 states to 8155 states and 9179 transitions. [2020-10-29 07:37:17,325 INFO L78 Accepts]: Start accepts. Automaton has 8155 states and 9179 transitions. Word has length 1587 [2020-10-29 07:37:17,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:37:17,326 INFO L481 AbstractCegarLoop]: Abstraction has 8155 states and 9179 transitions. [2020-10-29 07:37:17,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:37:17,326 INFO L276 IsEmpty]: Start isEmpty. Operand 8155 states and 9179 transitions. [2020-10-29 07:37:17,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1613 [2020-10-29 07:37:17,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:37:17,356 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 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, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:37:17,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 07:37:17,356 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:37:17,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:37:17,357 INFO L82 PathProgramCache]: Analyzing trace with hash 29796936, now seen corresponding path program 1 times [2020-10-29 07:37:17,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:37:17,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927078367] [2020-10-29 07:37:17,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:37:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:17,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:18,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:19,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:20,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:22,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:22,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1646 [2020-10-29 07:37:22,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:37:22,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 07:37:22,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:22,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:22,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:22,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1497 [2020-10-29 07:37:22,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 07:37:22,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:22,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:37:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:22,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:22,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:22,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:37:22,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:22,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:37:22,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:22,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:22,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:22,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:22,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:22,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:22,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:37:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:22,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:22,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:22,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:37:22,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:22,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:37:22,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:22,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:22,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:22,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:22,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:22,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:22,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:37:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:22,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:23,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:23,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:37:23,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:23,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 07:37:23,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:23,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:23,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:23,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:23,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:23,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:23,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:37:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:23,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:23,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:23,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:37:23,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:23,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:37:23,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:23,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:23,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:23,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:23,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:23,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:23,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:37:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:23,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:23,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:23,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:37:23,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:23,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:37:23,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:23,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:23,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:23,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:23,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:23,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:23,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:37:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:23,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:23,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:23,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:37:23,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:23,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:37:23,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:23,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:23,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:23,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:23,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:23,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:23,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:37:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:23,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:23,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:23,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:37:23,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:23,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:37:23,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:23,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:23,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:23,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:23,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:23,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:23,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:37:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:23,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:23,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:23,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:37:23,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:23,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 07:37:23,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:23,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:23,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:23,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:23,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:23,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:23,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:37:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:23,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:23,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:23,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:37:23,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:23,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 07:37:23,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:23,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:23,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:23,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:23,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:23,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-29 07:37:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:23,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:23,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:23,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:37:23,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:23,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 07:37:23,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:23,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:23,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:23,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:23,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:23,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:23,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-29 07:37:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:23,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:23,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:23,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:37:23,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:23,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 07:37:23,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:23,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:23,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:23,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:23,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:23,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:23,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-29 07:37:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:23,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:23,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:23,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-29 07:37:23,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:23,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 07:37:23,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:23,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:23,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:37:23,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:23,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-29 07:37:23,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:23,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1475 [2020-10-29 07:37:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:23,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:23,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:23,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 07:37:23,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:23,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 07:37:23,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:23,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:23,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:23,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:37:23,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:37:23,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:25,308 INFO L134 CoverageAnalysis]: Checked inductivity of 7568 backedges. 1536 proven. 2 refuted. 0 times theorem prover too weak. 6030 trivial. 0 not checked. [2020-10-29 07:37:25,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927078367] [2020-10-29 07:37:25,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:37:25,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:37:25,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982705127] [2020-10-29 07:37:25,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:37:25,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:37:25,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:37:25,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:37:25,310 INFO L87 Difference]: Start difference. First operand 8155 states and 9179 transitions. Second operand 7 states. [2020-10-29 07:37:27,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:37:27,556 INFO L93 Difference]: Finished difference Result 16718 states and 18929 transitions. [2020-10-29 07:37:27,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:37:27,556 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1612 [2020-10-29 07:37:27,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:37:27,568 INFO L225 Difference]: With dead ends: 16718 [2020-10-29 07:37:27,569 INFO L226 Difference]: Without dead ends: 7453 [2020-10-29 07:37:27,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:37:27,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7453 states. [2020-10-29 07:37:27,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7453 to 7403. [2020-10-29 07:37:27,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7403 states. [2020-10-29 07:37:27,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7403 states to 7403 states and 8176 transitions. [2020-10-29 07:37:27,714 INFO L78 Accepts]: Start accepts. Automaton has 7403 states and 8176 transitions. Word has length 1612 [2020-10-29 07:37:27,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:37:27,716 INFO L481 AbstractCegarLoop]: Abstraction has 7403 states and 8176 transitions. [2020-10-29 07:37:27,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:37:27,716 INFO L276 IsEmpty]: Start isEmpty. Operand 7403 states and 8176 transitions. [2020-10-29 07:37:27,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1675 [2020-10-29 07:37:27,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:37:27,743 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:37:27,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 07:37:27,743 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:37:27,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:37:27,744 INFO L82 PathProgramCache]: Analyzing trace with hash -98311981, now seen corresponding path program 1 times [2020-10-29 07:37:27,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:37:27,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987530751] [2020-10-29 07:37:27,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:37:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:28,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:28,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:29,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking...