/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/Problem17_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:10:50,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:10:50,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:10:50,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:10:50,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:10:50,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:10:50,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:10:50,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:10:50,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:10:50,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:10:50,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:10:50,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:10:50,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:10:50,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:10:50,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:10:50,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:10:50,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:10:50,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:10:50,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:10:50,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:10:50,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:10:50,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:10:50,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:10:50,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:10:50,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:10:50,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:10:50,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:10:50,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:10:50,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:10:50,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:10:50,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:10:50,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:10:50,456 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:10:50,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:10:50,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:10:50,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:10:50,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:10:50,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:10:50,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:10:50,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:10:50,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:10:50,463 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 08:10:50,489 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:10:50,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:10:50,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:10:50,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:10:50,492 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:10:50,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:10:50,492 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:10:50,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:10:50,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:10:50,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:10:50,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:10:50,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:10:50,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:10:50,493 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:10:50,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:10:50,494 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:10:50,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:10:50,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:10:50,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:10:50,495 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:10:50,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:10:50,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:10:50,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:10:50,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:10:50,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:10:50,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:10:50,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:10:50,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:10:50,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:10:50,497 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:10:50,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:10:50,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:10:50,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:10:50,969 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:10:50,969 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:10:50,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label04.c [2020-10-29 08:10:51,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06fbb804a/a818a575c9d84ac7ae8308e7057d46e8/FLAG494a48543 [2020-10-29 08:10:51,877 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:10:51,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label04.c [2020-10-29 08:10:51,908 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06fbb804a/a818a575c9d84ac7ae8308e7057d46e8/FLAG494a48543 [2020-10-29 08:10:51,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06fbb804a/a818a575c9d84ac7ae8308e7057d46e8 [2020-10-29 08:10:51,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:10:52,005 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:10:52,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:10:52,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:10:52,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:10:52,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:10:51" (1/1) ... [2020-10-29 08:10:52,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f89dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:10:52, skipping insertion in model container [2020-10-29 08:10:52,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:10:51" (1/1) ... [2020-10-29 08:10:52,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:10:52,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:10:53,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:10:53,130 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:10:53,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:10:53,719 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:10:53,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:10:53 WrapperNode [2020-10-29 08:10:53,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:10:53,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:10:53,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:10:53,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:10:53,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:10:53" (1/1) ... [2020-10-29 08:10:53,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:10:53" (1/1) ... [2020-10-29 08:10:53,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:10:53" (1/1) ... [2020-10-29 08:10:53,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:10:53" (1/1) ... [2020-10-29 08:10:53,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:10:53" (1/1) ... [2020-10-29 08:10:53,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:10:53" (1/1) ... [2020-10-29 08:10:53,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:10:53" (1/1) ... [2020-10-29 08:10:53,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:10:53,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:10:53,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:10:53,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:10:53,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:10:53" (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 08:10:54,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:10:54,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:10:54,061 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:10:54,061 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:10:54,062 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:10:54,062 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:10:54,062 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:10:54,062 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:10:54,062 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:10:54,063 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:10:54,063 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:10:54,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:10:54,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:10:54,063 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:10:54,064 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:10:54,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:10:54,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:10:54,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:10:54,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:10:54,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:10:54,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:11:03,436 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:11:03,436 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:11:03,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:11:03 BoogieIcfgContainer [2020-10-29 08:11:03,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:11:03,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:11:03,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:11:03,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:11:03,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:10:51" (1/3) ... [2020-10-29 08:11:03,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc15454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:11:03, skipping insertion in model container [2020-10-29 08:11:03,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:10:53" (2/3) ... [2020-10-29 08:11:03,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc15454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:11:03, skipping insertion in model container [2020-10-29 08:11:03,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:11:03" (3/3) ... [2020-10-29 08:11:03,454 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label04.c [2020-10-29 08:11:03,471 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:11:03,478 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:11:03,493 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:11:03,538 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:11:03,538 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:11:03,538 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:11:03,538 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:11:03,538 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:11:03,539 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:11:03,539 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:11:03,539 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:11:03,585 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-29 08:11:03,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 08:11:03,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:11:03,594 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] [2020-10-29 08:11:03,594 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:11:03,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:11:03,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1029137627, now seen corresponding path program 1 times [2020-10-29 08:11:03,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:11:03,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150355937] [2020-10-29 08:11:03,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:11:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:03,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:04,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:04,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 08:11:04,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:04,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-10-29 08:11:04,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:04,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:04,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:11:04,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:11:04,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 08:11:04,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:11:04,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:11:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:04,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:04,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:04,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:11:04,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:04,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 08:11:04,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:04,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:04,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:11:04,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:04,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:11:04,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:11:04,548 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 08:11:04,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150355937] [2020-10-29 08:11:04,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:11:04,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:11:04,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769696398] [2020-10-29 08:11:04,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:11:04,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:11:04,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:11:04,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:11:04,574 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-29 08:11:16,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:11:16,282 INFO L93 Difference]: Finished difference Result 1694 states and 3092 transitions. [2020-10-29 08:11:16,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:11:16,285 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-29 08:11:16,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:11:16,311 INFO L225 Difference]: With dead ends: 1694 [2020-10-29 08:11:16,311 INFO L226 Difference]: Without dead ends: 1010 [2020-10-29 08:11:16,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 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 08:11:16,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-29 08:11:16,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 992. [2020-10-29 08:11:16,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 992 states. [2020-10-29 08:11:16,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1527 transitions. [2020-10-29 08:11:16,509 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1527 transitions. Word has length 27 [2020-10-29 08:11:16,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:11:16,509 INFO L481 AbstractCegarLoop]: Abstraction has 992 states and 1527 transitions. [2020-10-29 08:11:16,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:11:16,510 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1527 transitions. [2020-10-29 08:11:16,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 08:11:16,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:11:16,515 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:11:16,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:11:16,515 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:11:16,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:11:16,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1150649126, now seen corresponding path program 1 times [2020-10-29 08:11:16,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:11:16,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36226527] [2020-10-29 08:11:16,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:11:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:16,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:17,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:17,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:18,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:18,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 08:11:18,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:11:18,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1455 [2020-10-29 08:11:18,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:18,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:18,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:11:18,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:11:18,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 08:11:18,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:11:18,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:11:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:18,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:18,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:18,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:11:18,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:18,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 08:11:18,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:18,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:18,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:11:18,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:18,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:11:18,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 08:11:18,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:11:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:18,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:18,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:18,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:11:18,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:18,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-29 08:11:18,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:18,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:18,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:11:18,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:11:18,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:11:18,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:18,527 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:11:18,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36226527] [2020-10-29 08:11:18,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:11:18,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:11:18,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118166223] [2020-10-29 08:11:18,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:11:18,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:11:18,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:11:18,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:11:18,535 INFO L87 Difference]: Start difference. First operand 992 states and 1527 transitions. Second operand 7 states. [2020-10-29 08:11:33,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:11:33,615 INFO L93 Difference]: Finished difference Result 2466 states and 3913 transitions. [2020-10-29 08:11:33,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:11:33,619 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-10-29 08:11:33,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:11:33,628 INFO L225 Difference]: With dead ends: 2466 [2020-10-29 08:11:33,628 INFO L226 Difference]: Without dead ends: 1480 [2020-10-29 08:11:33,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 08:11:33,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2020-10-29 08:11:33,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1442. [2020-10-29 08:11:33,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1442 states. [2020-10-29 08:11:33,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 1871 transitions. [2020-10-29 08:11:33,684 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 1871 transitions. Word has length 98 [2020-10-29 08:11:33,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:11:33,685 INFO L481 AbstractCegarLoop]: Abstraction has 1442 states and 1871 transitions. [2020-10-29 08:11:33,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:11:33,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 1871 transitions. [2020-10-29 08:11:33,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 08:11:33,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:11:33,687 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:11:33,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:11:33,688 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:11:33,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:11:33,688 INFO L82 PathProgramCache]: Analyzing trace with hash 2145672399, now seen corresponding path program 1 times [2020-10-29 08:11:33,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:11:33,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118739312] [2020-10-29 08:11:33,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:11:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:33,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:33,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:33,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 08:11:33,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:33,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-29 08:11:33,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:33,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:33,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:11:33,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 08:11:33,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 08:11:33,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:34,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:11:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:34,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:34,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:34,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:11:34,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:34,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:11:34,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:34,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:34,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:34,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:34,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:34,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:34,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:11:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:34,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:34,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:34,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:11:34,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:34,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 08:11:34,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:34,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:34,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:11:34,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:34,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 08:11:34,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:34,344 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:11:34,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118739312] [2020-10-29 08:11:34,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:11:34,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:11:34,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847461703] [2020-10-29 08:11:34,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:11:34,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:11:34,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:11:34,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:11:34,349 INFO L87 Difference]: Start difference. First operand 1442 states and 1871 transitions. Second operand 5 states. [2020-10-29 08:11:46,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:11:46,255 INFO L93 Difference]: Finished difference Result 3350 states and 4601 transitions. [2020-10-29 08:11:46,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:11:46,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-29 08:11:46,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:11:46,269 INFO L225 Difference]: With dead ends: 3350 [2020-10-29 08:11:46,269 INFO L226 Difference]: Without dead ends: 1901 [2020-10-29 08:11:46,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 08:11:46,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1901 states. [2020-10-29 08:11:46,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1901 to 1886. [2020-10-29 08:11:46,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1886 states. [2020-10-29 08:11:46,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 2310 transitions. [2020-10-29 08:11:46,335 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 2310 transitions. Word has length 101 [2020-10-29 08:11:46,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:11:46,337 INFO L481 AbstractCegarLoop]: Abstraction has 1886 states and 2310 transitions. [2020-10-29 08:11:46,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:11:46,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 2310 transitions. [2020-10-29 08:11:46,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-29 08:11:46,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:11:46,355 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:11:46,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:11:46,355 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:11:46,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:11:46,356 INFO L82 PathProgramCache]: Analyzing trace with hash -505364161, now seen corresponding path program 1 times [2020-10-29 08:11:46,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:11:46,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344591381] [2020-10-29 08:11:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:11:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:46,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:46,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:47,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:47,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 08:11:47,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:11:47,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 958 [2020-10-29 08:11:47,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:47,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:47,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:11:47,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:11:47,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:11:47,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:47,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:11:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:47,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:47,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:47,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:11:47,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:47,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:11:47,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:47,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:47,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:47,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:47,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:47,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:47,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:11:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:47,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:47,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:47,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:11:47,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:47,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 08:11:47,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:47,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:47,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:11:47,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:47,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:11:47,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:47,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:11:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:47,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:47,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:47,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:11:47,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:47,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-29 08:11:47,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:47,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:47,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:11:47,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:11:47,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 08:11:47,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:11:47,971 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:11:47,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344591381] [2020-10-29 08:11:47,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:11:47,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:11:47,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564839460] [2020-10-29 08:11:47,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:11:47,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:11:47,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:11:47,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:11:47,976 INFO L87 Difference]: Start difference. First operand 1886 states and 2310 transitions. Second operand 7 states. [2020-10-29 08:12:01,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:12:01,933 INFO L93 Difference]: Finished difference Result 4253 states and 5513 transitions. [2020-10-29 08:12:01,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:12:01,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 187 [2020-10-29 08:12:01,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:12:01,948 INFO L225 Difference]: With dead ends: 4253 [2020-10-29 08:12:01,948 INFO L226 Difference]: Without dead ends: 2806 [2020-10-29 08:12:01,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 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 08:12:01,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2020-10-29 08:12:02,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2795. [2020-10-29 08:12:02,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2795 states. [2020-10-29 08:12:02,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 3417 transitions. [2020-10-29 08:12:02,026 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 3417 transitions. Word has length 187 [2020-10-29 08:12:02,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:12:02,027 INFO L481 AbstractCegarLoop]: Abstraction has 2795 states and 3417 transitions. [2020-10-29 08:12:02,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:12:02,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 3417 transitions. [2020-10-29 08:12:02,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-29 08:12:02,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:12:02,030 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 08:12:02,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:12:02,031 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:12:02,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:12:02,031 INFO L82 PathProgramCache]: Analyzing trace with hash -2142067933, now seen corresponding path program 1 times [2020-10-29 08:12:02,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:12:02,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941363718] [2020-10-29 08:12:02,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:12:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:02,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:02,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:05,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:05,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:05,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-29 08:12:05,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:12:05,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3790 [2020-10-29 08:12:05,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:05,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:05,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:12:05,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:12:05,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 08:12:05,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:06,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:12:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:06,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:06,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:06,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:12:06,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:06,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 08:12:06,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:06,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:06,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:12:06,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:06,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:12:06,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:06,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:12:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:06,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:06,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:06,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:12:06,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:06,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-29 08:12:06,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:06,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:06,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:12:06,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:12:06,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:12:06,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:06,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:12:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:06,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:06,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:06,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:12:06,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:06,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-29 08:12:06,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:06,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:06,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:12:06,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:12:06,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:12:06,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:06,785 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 107 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:12:06,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941363718] [2020-10-29 08:12:06,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:12:06,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:12:06,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168548867] [2020-10-29 08:12:06,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:12:06,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:12:06,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:12:06,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:12:06,788 INFO L87 Difference]: Start difference. First operand 2795 states and 3417 transitions. Second operand 10 states. [2020-10-29 08:12:07,660 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-29 08:12:12,797 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-10-29 08:12:46,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:12:46,540 INFO L93 Difference]: Finished difference Result 9372 states and 11968 transitions. [2020-10-29 08:12:46,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 08:12:46,542 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 189 [2020-10-29 08:12:46,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:12:46,578 INFO L225 Difference]: With dead ends: 9372 [2020-10-29 08:12:46,578 INFO L226 Difference]: Without dead ends: 7016 [2020-10-29 08:12:46,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=171, Invalid=641, Unknown=0, NotChecked=0, Total=812 [2020-10-29 08:12:46,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7016 states. [2020-10-29 08:12:46,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7016 to 6960. [2020-10-29 08:12:46,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6960 states. [2020-10-29 08:12:46,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6960 states to 6960 states and 8592 transitions. [2020-10-29 08:12:46,779 INFO L78 Accepts]: Start accepts. Automaton has 6960 states and 8592 transitions. Word has length 189 [2020-10-29 08:12:46,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:12:46,780 INFO L481 AbstractCegarLoop]: Abstraction has 6960 states and 8592 transitions. [2020-10-29 08:12:46,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:12:46,780 INFO L276 IsEmpty]: Start isEmpty. Operand 6960 states and 8592 transitions. [2020-10-29 08:12:46,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-29 08:12:46,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:12:46,783 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:12:46,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:12:46,784 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:12:46,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:12:46,784 INFO L82 PathProgramCache]: Analyzing trace with hash -648944915, now seen corresponding path program 1 times [2020-10-29 08:12:46,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:12:46,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768937701] [2020-10-29 08:12:46,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:12:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:46,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:47,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:47,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:51,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:51,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-29 08:12:51,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:12:51,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 08:12:51,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:51,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:51,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:12:51,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:12:51,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 08:12:51,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:51,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:12:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:51,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:52,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:52,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:12:52,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:52,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:12:52,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:52,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:52,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:12:52,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:52,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:12:52,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:52,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:12:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:52,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:52,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:52,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:12:52,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:52,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 08:12:52,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:52,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:52,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:12:52,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:52,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:12:52,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:52,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:12:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:52,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:52,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:52,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:52,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:12:52,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:12:52,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-29 08:12:52,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:52,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:52,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:12:52,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:52,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:12:52,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:52,502 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:12:52,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768937701] [2020-10-29 08:12:52,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:12:52,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:12:52,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801485883] [2020-10-29 08:12:52,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:12:52,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:12:52,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:12:52,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:12:52,504 INFO L87 Difference]: Start difference. First operand 6960 states and 8592 transitions. Second operand 5 states. [2020-10-29 08:13:05,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:13:05,753 INFO L93 Difference]: Finished difference Result 13928 states and 17574 transitions. [2020-10-29 08:13:05,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:13:05,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2020-10-29 08:13:05,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:13:05,789 INFO L225 Difference]: With dead ends: 13928 [2020-10-29 08:13:05,789 INFO L226 Difference]: Without dead ends: 7407 [2020-10-29 08:13:05,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 08:13:05,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7407 states. [2020-10-29 08:13:05,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7407 to 7390. [2020-10-29 08:13:05,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7390 states. [2020-10-29 08:13:05,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7390 states to 7390 states and 9199 transitions. [2020-10-29 08:13:05,981 INFO L78 Accepts]: Start accepts. Automaton has 7390 states and 9199 transitions. Word has length 200 [2020-10-29 08:13:05,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:13:05,982 INFO L481 AbstractCegarLoop]: Abstraction has 7390 states and 9199 transitions. [2020-10-29 08:13:05,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:13:05,982 INFO L276 IsEmpty]: Start isEmpty. Operand 7390 states and 9199 transitions. [2020-10-29 08:13:05,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-29 08:13:05,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:13:05,987 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:05,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:13:05,988 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:13:05,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:13:05,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1747536124, now seen corresponding path program 1 times [2020-10-29 08:13:05,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:13:05,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968651175] [2020-10-29 08:13:05,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:13:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:06,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:06,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:09,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:09,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-29 08:13:09,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:13:09,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3660 [2020-10-29 08:13:09,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:09,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:09,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:13:09,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:13:09,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-10-29 08:13:09,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:09,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:13:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:09,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:09,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:09,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:13:09,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:09,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 08:13:09,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:09,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:09,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:13:09,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:09,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:13:09,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:09,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:13:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:09,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:10,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:10,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:13:10,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:10,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-29 08:13:10,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:10,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:10,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:13:10,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:13:10,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:13:10,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:10,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:13:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:10,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:10,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:10,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 08:13:10,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:10,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-29 08:13:10,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:10,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:10,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:13:10,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:13:10,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 08:13:10,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:10,788 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 39 proven. 5 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-29 08:13:10,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968651175] [2020-10-29 08:13:10,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:13:10,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:13:10,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866009598] [2020-10-29 08:13:10,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 08:13:10,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:13:10,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 08:13:10,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 08:13:10,792 INFO L87 Difference]: Start difference. First operand 7390 states and 9199 transitions. Second operand 9 states. [2020-10-29 08:13:10,982 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-29 08:13:34,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:13:34,061 INFO L93 Difference]: Finished difference Result 16686 states and 21108 transitions. [2020-10-29 08:13:34,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 08:13:34,070 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 255 [2020-10-29 08:13:34,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:13:34,121 INFO L225 Difference]: With dead ends: 16686 [2020-10-29 08:13:34,122 INFO L226 Difference]: Without dead ends: 9289 [2020-10-29 08:13:34,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-29 08:13:34,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9289 states. [2020-10-29 08:13:34,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9289 to 9234. [2020-10-29 08:13:34,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9234 states. [2020-10-29 08:13:34,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9234 states to 9234 states and 11556 transitions. [2020-10-29 08:13:34,388 INFO L78 Accepts]: Start accepts. Automaton has 9234 states and 11556 transitions. Word has length 255 [2020-10-29 08:13:34,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:13:34,389 INFO L481 AbstractCegarLoop]: Abstraction has 9234 states and 11556 transitions. [2020-10-29 08:13:34,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 08:13:34,389 INFO L276 IsEmpty]: Start isEmpty. Operand 9234 states and 11556 transitions. [2020-10-29 08:13:34,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-29 08:13:34,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:13:34,395 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:13:34,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:13:34,395 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:13:34,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:13:34,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1826253607, now seen corresponding path program 1 times [2020-10-29 08:13:34,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:13:34,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459634079] [2020-10-29 08:13:34,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:13:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:34,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:34,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:35,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:38,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:39,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:39,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-29 08:13:39,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:13:39,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-29 08:13:39,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:39,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:39,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:13:39,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:13:39,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-29 08:13:39,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:39,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:13:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:39,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:39,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:39,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:13:39,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:39,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:13:39,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:39,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:13:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:13:39,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:13:39,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:13:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:39,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:39,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:39,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:13:39,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:39,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-29 08:13:39,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:39,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:39,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:13:39,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:13:39,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:13:39,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:40,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:13:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:40,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:40,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:40,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 08:13:40,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:40,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-29 08:13:40,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:40,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:13:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:13:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 08:13:40,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:40,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-29 08:13:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:40,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:40,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:40,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:13:40,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:40,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 08:13:40,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:40,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:40,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:13:40,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 08:13:40,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:13:40,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:40,363 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 62 proven. 145 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-29 08:13:40,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459634079] [2020-10-29 08:13:40,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:13:40,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:13:40,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323924196] [2020-10-29 08:13:40,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 08:13:40,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:13:40,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 08:13:40,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 08:13:40,366 INFO L87 Difference]: Start difference. First operand 9234 states and 11556 transitions. Second operand 9 states. [2020-10-29 08:13:40,583 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-29 08:14:00,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:14:00,691 INFO L93 Difference]: Finished difference Result 25089 states and 34589 transitions. [2020-10-29 08:14:00,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 08:14:00,694 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 267 [2020-10-29 08:14:00,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:14:00,774 INFO L225 Difference]: With dead ends: 25089 [2020-10-29 08:14:00,775 INFO L226 Difference]: Without dead ends: 16296 [2020-10-29 08:14:00,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-29 08:14:00,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16296 states. [2020-10-29 08:14:01,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16296 to 15096. [2020-10-29 08:14:01,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15096 states. [2020-10-29 08:14:01,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15096 states to 15096 states and 18217 transitions. [2020-10-29 08:14:01,367 INFO L78 Accepts]: Start accepts. Automaton has 15096 states and 18217 transitions. Word has length 267 [2020-10-29 08:14:01,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:14:01,367 INFO L481 AbstractCegarLoop]: Abstraction has 15096 states and 18217 transitions. [2020-10-29 08:14:01,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 08:14:01,368 INFO L276 IsEmpty]: Start isEmpty. Operand 15096 states and 18217 transitions. [2020-10-29 08:14:01,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-29 08:14:01,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:14:01,373 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:14:01,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:14:01,373 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:14:01,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:14:01,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1349973640, now seen corresponding path program 1 times [2020-10-29 08:14:01,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:14:01,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474071535] [2020-10-29 08:14:01,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:14:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:01,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:01,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:02,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:02,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 08:14:02,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:14:02,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1547 [2020-10-29 08:14:02,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:02,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:02,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:14:02,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-29 08:14:02,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 08:14:02,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:03,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:14:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:03,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:03,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:03,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:14:03,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:03,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:14:03,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:03,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:03,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:14:03,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:03,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:14:03,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:03,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:14:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:03,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:03,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:03,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:14:03,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:03,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 08:14:03,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:03,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:03,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:14:03,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:03,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:14:03,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:03,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:14:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:03,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:03,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:03,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:14:03,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:03,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 08:14:03,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:03,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:03,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:14:03,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:03,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:14:03,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:03,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:14:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:03,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:03,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:03,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:14:03,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:03,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 08:14:03,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:03,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:03,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:14:03,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:14:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:14:03,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:14:03,785 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-29 08:14:03,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474071535] [2020-10-29 08:14:03,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:14:03,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:14:03,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518764901] [2020-10-29 08:14:03,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:14:03,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:14:03,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:14:03,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:14:03,796 INFO L87 Difference]: Start difference. First operand 15096 states and 18217 transitions. Second operand 7 states. [2020-10-29 08:14:24,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:14:24,460 INFO L93 Difference]: Finished difference Result 34459 states and 42859 transitions. [2020-10-29 08:14:24,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:14:24,462 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-10-29 08:14:24,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:14:24,520 INFO L225 Difference]: With dead ends: 34459 [2020-10-29 08:14:24,520 INFO L226 Difference]: Without dead ends: 19804 [2020-10-29 08:14:24,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:14:24,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19804 states. [2020-10-29 08:14:24,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19804 to 18374. [2020-10-29 08:14:24,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18374 states. [2020-10-29 08:14:24,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18374 states to 18374 states and 22982 transitions. [2020-10-29 08:14:24,975 INFO L78 Accepts]: Start accepts. Automaton has 18374 states and 22982 transitions. Word has length 271 [2020-10-29 08:14:24,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:14:24,976 INFO L481 AbstractCegarLoop]: Abstraction has 18374 states and 22982 transitions. [2020-10-29 08:14:24,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:14:24,976 INFO L276 IsEmpty]: Start isEmpty. Operand 18374 states and 22982 transitions. [2020-10-29 08:14:24,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-29 08:14:24,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:14:24,981 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:14:24,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:14:24,981 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:14:24,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:14:24,982 INFO L82 PathProgramCache]: Analyzing trace with hash 456868816, now seen corresponding path program 1 times [2020-10-29 08:14:24,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:14:24,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879791599] [2020-10-29 08:14:24,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:14:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:25,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:25,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:26,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:27,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:29,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:29,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-29 08:14:29,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:14:29,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3984 [2020-10-29 08:14:29,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:29,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:29,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 08:14:29,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:14:29,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-29 08:14:29,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:29,189 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:14:29,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:14:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:29,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:29,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:29,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:14:29,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:29,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:14:29,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:29,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:29,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:14:29,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:29,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:14:29,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:29,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:14:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:29,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:29,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:29,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:14:29,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:29,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-29 08:14:29,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:29,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:29,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:14:29,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:14:29,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:14:29,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:29,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:14:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:29,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:29,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:29,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:14:29,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:29,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 08:14:29,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:29,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:29,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:14:29,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:14:29,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 08:14:29,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:29,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:14:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:29,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:29,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:29,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:14:29,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:29,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 08:14:29,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:29,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:14:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:14:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:14:29,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:29,815 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 138 proven. 80 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 08:14:29,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879791599] [2020-10-29 08:14:29,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:14:29,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:14:29,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541739685] [2020-10-29 08:14:29,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:14:29,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:14:29,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:14:29,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:14:29,818 INFO L87 Difference]: Start difference. First operand 18374 states and 22982 transitions. Second operand 10 states. [2020-10-29 08:14:30,058 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66