/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_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:12:42,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:12:42,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:12:42,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:12:42,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:12:42,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:12:42,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:12:42,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:12:42,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:12:42,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:12:42,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:12:42,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:12:42,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:12:42,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:12:42,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:12:42,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:12:42,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:12:42,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:12:42,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:12:42,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:12:42,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:12:42,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:12:42,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:12:42,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:12:42,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:12:42,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:12:42,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:12:42,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:12:42,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:12:42,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:12:42,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:12:42,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:12:42,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:12:42,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:12:42,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:12:42,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:12:42,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:12:42,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:12:42,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:12:42,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:12:42,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:12:42,988 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 08:12:43,039 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:12:43,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:12:43,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:12:43,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:12:43,045 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:12:43,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:12:43,046 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:12:43,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:12:43,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:12:43,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:12:43,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:12:43,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:12:43,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:12:43,048 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:12:43,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:12:43,049 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:12:43,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:12:43,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:12:43,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:12:43,049 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:12:43,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:12:43,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:12:43,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:12:43,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:12:43,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:12:43,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:12:43,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:12:43,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:12:43,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:12:43,051 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:12:43,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:12:43,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:12:43,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:12:43,495 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:12:43,496 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:12:43,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label13.c [2020-10-29 08:12:43,589 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ffa564b5/ff401db08a5a4a69971faec1607159d4/FLAG90f496948 [2020-10-29 08:12:44,718 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:12:44,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label13.c [2020-10-29 08:12:44,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ffa564b5/ff401db08a5a4a69971faec1607159d4/FLAG90f496948 [2020-10-29 08:12:45,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ffa564b5/ff401db08a5a4a69971faec1607159d4 [2020-10-29 08:12:45,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:12:45,192 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:12:45,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:12:45,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:12:45,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:12:45,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:12:45" (1/1) ... [2020-10-29 08:12:45,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2be277ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:45, skipping insertion in model container [2020-10-29 08:12:45,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:12:45" (1/1) ... [2020-10-29 08:12:45,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:12:45,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:12:46,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:12:46,647 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:12:47,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:12:47,110 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:12:47,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:47 WrapperNode [2020-10-29 08:12:47,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:12:47,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:12:47,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:12:47,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:12:47,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:47" (1/1) ... [2020-10-29 08:12:47,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:47" (1/1) ... [2020-10-29 08:12:47,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:47" (1/1) ... [2020-10-29 08:12:47,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:47" (1/1) ... [2020-10-29 08:12:47,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:47" (1/1) ... [2020-10-29 08:12:47,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:47" (1/1) ... [2020-10-29 08:12:47,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:47" (1/1) ... [2020-10-29 08:12:47,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:12:47,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:12:47,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:12:47,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:12:47,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:47" (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 08:12:47,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:12:47,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:12:47,535 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:12:47,535 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:12:47,535 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:12:47,535 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:12:47,535 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:12:47,535 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:12:47,536 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:12:47,536 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:12:47,537 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:12:47,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:12:47,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:12:47,538 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:12:47,538 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:12:47,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:12:47,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:12:47,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:12:47,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:12:47,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:12:47,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:12:56,943 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:12:56,944 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:12:56,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:12:56 BoogieIcfgContainer [2020-10-29 08:12:56,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:12:56,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:12:56,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:12:56,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:12:56,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:12:45" (1/3) ... [2020-10-29 08:12:56,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f197e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:12:56, skipping insertion in model container [2020-10-29 08:12:56,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:47" (2/3) ... [2020-10-29 08:12:56,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f197e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:12:56, skipping insertion in model container [2020-10-29 08:12:56,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:12:56" (3/3) ... [2020-10-29 08:12:56,964 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label13.c [2020-10-29 08:12:56,979 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:12:56,986 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:12:57,003 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:12:57,053 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:12:57,053 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:12:57,053 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:12:57,054 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:12:57,054 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:12:57,054 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:12:57,054 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:12:57,054 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:12:57,093 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-29 08:12:57,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 08:12:57,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:12:57,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:12:57,101 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:12:57,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:12:57,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1503092067, now seen corresponding path program 1 times [2020-10-29 08:12:57,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:12:57,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096746103] [2020-10-29 08:12:57,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:12:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:57,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:57,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:57,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 08:12:57,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:57,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 541 [2020-10-29 08:12:57,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:57,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:57,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:12:57,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:12:57,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 08:12:57,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:12:58,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:12:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:58,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:58,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:58,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:12:58,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:58,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 08:12:58,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:58,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:58,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:12:58,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:58,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:12:58,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:12:58,099 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 08:12:58,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096746103] [2020-10-29 08:12:58,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:12:58,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 08:12:58,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466335366] [2020-10-29 08:12:58,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:12:58,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:12:58,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:12:58,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:12:58,138 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 5 states. [2020-10-29 08:12:58,946 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:13:17,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:13:17,080 INFO L93 Difference]: Finished difference Result 2207 states and 4069 transitions. [2020-10-29 08:13:17,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:13:17,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-29 08:13:17,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:13:17,120 INFO L225 Difference]: With dead ends: 2207 [2020-10-29 08:13:17,120 INFO L226 Difference]: Without dead ends: 1502 [2020-10-29 08:13:17,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:13:17,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2020-10-29 08:13:17,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1467. [2020-10-29 08:13:17,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1467 states. [2020-10-29 08:13:17,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 2358 transitions. [2020-10-29 08:13:17,319 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 2358 transitions. Word has length 37 [2020-10-29 08:13:17,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:13:17,321 INFO L481 AbstractCegarLoop]: Abstraction has 1467 states and 2358 transitions. [2020-10-29 08:13:17,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:13:17,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 2358 transitions. [2020-10-29 08:13:17,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-29 08:13:17,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:13:17,332 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:17,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:13:17,333 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:13:17,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:13:17,334 INFO L82 PathProgramCache]: Analyzing trace with hash 233023470, now seen corresponding path program 1 times [2020-10-29 08:13:17,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:13:17,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70603946] [2020-10-29 08:13:17,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:13:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:17,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:17,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:18,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:18,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 08:13:18,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:13:18,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1499 [2020-10-29 08:13:18,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:18,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:18,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:13:18,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:13:18,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:13:18,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:13:19,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:13:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:19,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:19,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:19,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:13:19,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:19,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 08:13:19,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:19,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:19,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:13:19,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:19,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:13:19,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 08:13:19,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:13:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:19,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:19,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:19,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 08:13:19,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:19,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-29 08:13:19,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:19,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:19,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:13:19,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:13:19,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 08:13:19,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:19,732 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:13:19,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70603946] [2020-10-29 08:13:19,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:13:19,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:13:19,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703485886] [2020-10-29 08:13:19,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:13:19,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:13:19,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:13:19,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:13:19,740 INFO L87 Difference]: Start difference. First operand 1467 states and 2358 transitions. Second operand 7 states. [2020-10-29 08:13:34,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:13:34,517 INFO L93 Difference]: Finished difference Result 3837 states and 6296 transitions. [2020-10-29 08:13:34,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:13:34,519 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-29 08:13:34,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:13:34,541 INFO L225 Difference]: With dead ends: 3837 [2020-10-29 08:13:34,542 INFO L226 Difference]: Without dead ends: 2376 [2020-10-29 08:13:34,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:13:34,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2020-10-29 08:13:34,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 1913. [2020-10-29 08:13:34,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1913 states. [2020-10-29 08:13:34,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 2637 transitions. [2020-10-29 08:13:34,628 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 2637 transitions. Word has length 119 [2020-10-29 08:13:34,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:13:34,628 INFO L481 AbstractCegarLoop]: Abstraction has 1913 states and 2637 transitions. [2020-10-29 08:13:34,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:13:34,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 2637 transitions. [2020-10-29 08:13:34,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-29 08:13:34,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:13:34,634 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:13:34,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:13:34,634 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:13:34,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:13:34,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1917722881, now seen corresponding path program 1 times [2020-10-29 08:13:34,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:13:34,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269168428] [2020-10-29 08:13:34,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:13:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:34,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:35,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:36,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:36,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:36,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-29 08:13:36,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:13:36,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1871 [2020-10-29 08:13:36,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:36,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:36,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:13:36,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:13:36,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 08:13:36,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:36,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:13:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:36,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:36,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:36,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:13:36,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:36,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 08:13:36,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:36,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:36,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:13:36,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:36,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:13:36,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:13:36,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:13:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:36,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:37,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:37,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:13:37,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:37,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-29 08:13:37,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:37,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:37,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:13:37,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:37,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:13:37,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:37,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:13:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:37,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:37,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:37,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:13:37,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:37,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-29 08:13:37,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:37,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:37,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:13:37,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:13:37,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 08:13:37,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:13:37,468 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 93 proven. 29 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 08:13:37,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269168428] [2020-10-29 08:13:37,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:13:37,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:13:37,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857587776] [2020-10-29 08:13:37,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:13:37,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:13:37,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:13:37,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:13:37,474 INFO L87 Difference]: Start difference. First operand 1913 states and 2637 transitions. Second operand 6 states. [2020-10-29 08:14:02,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:14:02,898 INFO L93 Difference]: Finished difference Result 5701 states and 7992 transitions. [2020-10-29 08:14:02,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:14:02,900 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 193 [2020-10-29 08:14:02,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:14:02,928 INFO L225 Difference]: With dead ends: 5701 [2020-10-29 08:14:02,928 INFO L226 Difference]: Without dead ends: 2893 [2020-10-29 08:14:02,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:14:02,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2020-10-29 08:14:03,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 2856. [2020-10-29 08:14:03,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2856 states. [2020-10-29 08:14:03,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 3669 transitions. [2020-10-29 08:14:03,076 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 3669 transitions. Word has length 193 [2020-10-29 08:14:03,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:14:03,086 INFO L481 AbstractCegarLoop]: Abstraction has 2856 states and 3669 transitions. [2020-10-29 08:14:03,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:14:03,088 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 3669 transitions. [2020-10-29 08:14:03,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-29 08:14:03,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:14:03,094 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:14:03,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:14:03,095 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:14:03,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:14:03,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1302875182, now seen corresponding path program 1 times [2020-10-29 08:14:03,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:14:03,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995947094] [2020-10-29 08:14:03,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:14:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:03,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:03,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:04,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:04,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-29 08:14:04,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:14:04,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1599 [2020-10-29 08:14:04,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:04,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:04,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:14:04,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:14:04,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 08:14:04,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:14:04,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:14:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:04,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:04,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:04,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:14:04,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:04,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:14:04,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:04,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:04,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:14:04,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:04,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:14:04,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:05,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:14:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:05,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:05,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:05,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:14:05,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:05,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-29 08:14:05,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:05,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:05,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:14:05,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:05,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:14:05,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:14:05,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:14:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:05,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:05,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:05,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:14:05,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:05,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-29 08:14:05,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:05,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:05,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:14:05,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:14:05,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 08:14:05,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:14:05,535 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:14:05,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995947094] [2020-10-29 08:14:05,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:14:05,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:14:05,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619185397] [2020-10-29 08:14:05,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:14:05,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:14:05,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:14:05,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:14:05,540 INFO L87 Difference]: Start difference. First operand 2856 states and 3669 transitions. Second operand 7 states. [2020-10-29 08:14:06,438 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:14:21,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:14:21,460 INFO L93 Difference]: Finished difference Result 7569 states and 10161 transitions. [2020-10-29 08:14:21,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:14:21,462 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2020-10-29 08:14:21,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:14:21,491 INFO L225 Difference]: With dead ends: 7569 [2020-10-29 08:14:21,492 INFO L226 Difference]: Without dead ends: 4719 [2020-10-29 08:14:21,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:14:21,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4719 states. [2020-10-29 08:14:21,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4719 to 4693. [2020-10-29 08:14:21,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4693 states. [2020-10-29 08:14:21,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 6027 transitions. [2020-10-29 08:14:21,667 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 6027 transitions. Word has length 194 [2020-10-29 08:14:21,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:14:21,668 INFO L481 AbstractCegarLoop]: Abstraction has 4693 states and 6027 transitions. [2020-10-29 08:14:21,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:14:21,668 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 6027 transitions. [2020-10-29 08:14:21,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-29 08:14:21,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:14:21,672 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 08:14:21,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:14:21,672 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:14:21,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:14:21,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1738282411, now seen corresponding path program 1 times [2020-10-29 08:14:21,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:14:21,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499959577] [2020-10-29 08:14:21,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:14:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:21,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:22,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:23,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:25,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:25,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-29 08:14:25,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:14:25,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3766 [2020-10-29 08:14:25,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:25,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:14:25,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:14:25,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 08:14:25,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:25,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:14:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:25,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:25,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:25,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:14:25,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:25,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 08:14:25,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:25,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:25,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:14:25,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:25,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:14:25,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:14:25,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:14:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:25,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:26,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:26,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:14:26,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:26,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-29 08:14:26,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:26,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:26,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:14:26,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:14:26,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:14:26,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:26,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:14:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:26,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:26,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:26,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:14:26,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:26,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 08:14:26,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:26,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:26,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:14:26,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:14:26,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:14:26,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:14:26,648 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 62 proven. 70 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:14:26,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499959577] [2020-10-29 08:14:26,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:14:26,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:14:26,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722555268] [2020-10-29 08:14:26,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:14:26,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:14:26,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:14:26,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:14:26,651 INFO L87 Difference]: Start difference. First operand 4693 states and 6027 transitions. Second operand 10 states. [2020-10-29 08:14:28,134 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 08:14:32,723 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2020-10-29 08:14:34,363 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-29 08:14:36,359 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-29 08:14:39,280 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2020-10-29 08:15:01,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:15:01,320 INFO L93 Difference]: Finished difference Result 12421 states and 16263 transitions. [2020-10-29 08:15:01,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 08:15:01,323 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 199 [2020-10-29 08:15:01,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:15:01,371 INFO L225 Difference]: With dead ends: 12421 [2020-10-29 08:15:01,372 INFO L226 Difference]: Without dead ends: 7734 [2020-10-29 08:15:01,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=200, Invalid=730, Unknown=0, NotChecked=0, Total=930 [2020-10-29 08:15:01,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7734 states. [2020-10-29 08:15:01,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7734 to 7070. [2020-10-29 08:15:01,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7070 states. [2020-10-29 08:15:01,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7070 states to 7070 states and 9054 transitions. [2020-10-29 08:15:01,640 INFO L78 Accepts]: Start accepts. Automaton has 7070 states and 9054 transitions. Word has length 199 [2020-10-29 08:15:01,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:15:01,640 INFO L481 AbstractCegarLoop]: Abstraction has 7070 states and 9054 transitions. [2020-10-29 08:15:01,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:15:01,641 INFO L276 IsEmpty]: Start isEmpty. Operand 7070 states and 9054 transitions. [2020-10-29 08:15:01,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-29 08:15:01,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:15:01,644 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 08:15:01,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:15:01,645 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:15:01,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:15:01,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1018935541, now seen corresponding path program 1 times [2020-10-29 08:15:01,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:15:01,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001655955] [2020-10-29 08:15:01,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:15:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:01,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:01,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:01,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:06,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:06,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 08:15:06,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:15:06,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 08:15:06,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:06,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:06,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:15:06,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:15:06,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 08:15:06,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:07,010 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:15:07,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:15:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:07,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:07,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:07,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:15:07,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:07,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 08:15:07,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:07,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:07,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:15:07,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:07,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:15:07,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:07,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:15:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:07,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:07,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:07,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:15:07,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:07,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-29 08:15:07,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:07,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:07,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:07,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:07,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:15:07,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:07,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:15:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:07,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:07,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:07,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:07,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:15:07,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:15:07,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-29 08:15:07,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:07,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:15:07,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:07,811 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:15:07,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001655955] [2020-10-29 08:15:07,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:15:07,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:15:07,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893619433] [2020-10-29 08:15:07,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:15:07,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:15:07,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:15:07,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:15:07,814 INFO L87 Difference]: Start difference. First operand 7070 states and 9054 transitions. Second operand 5 states. [2020-10-29 08:15:23,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:15:23,635 INFO L93 Difference]: Finished difference Result 14591 states and 18998 transitions. [2020-10-29 08:15:23,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:15:23,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2020-10-29 08:15:23,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:15:23,691 INFO L225 Difference]: With dead ends: 14591 [2020-10-29 08:15:23,691 INFO L226 Difference]: Without dead ends: 7527 [2020-10-29 08:15:23,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:15:23,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7527 states. [2020-10-29 08:15:23,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7527 to 7063. [2020-10-29 08:15:23,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7063 states. [2020-10-29 08:15:23,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 9427 transitions. [2020-10-29 08:15:23,925 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 9427 transitions. Word has length 210 [2020-10-29 08:15:23,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:15:23,925 INFO L481 AbstractCegarLoop]: Abstraction has 7063 states and 9427 transitions. [2020-10-29 08:15:23,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:15:23,925 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 9427 transitions. [2020-10-29 08:15:23,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-29 08:15:23,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:15:23,932 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 08:15:23,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:15:23,933 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:15:23,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:15:23,933 INFO L82 PathProgramCache]: Analyzing trace with hash -964718577, now seen corresponding path program 1 times [2020-10-29 08:15:23,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:15:23,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947474886] [2020-10-29 08:15:23,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:15:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:24,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:24,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:25,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:28,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:29,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:29,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-29 08:15:29,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:15:29,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-29 08:15:29,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:29,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:29,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:15:29,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:15:29,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-29 08:15:29,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:29,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:15:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:29,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:29,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:29,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:15:29,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:29,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:15:29,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:29,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:29,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:29,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:29,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:15:29,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:29,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:15:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:29,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:29,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:29,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:15:29,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:29,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-29 08:15:29,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:29,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:15:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:15:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:15:29,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:15:29,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:15:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:29,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:29,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:29,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 08:15:29,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:29,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-29 08:15:29,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:29,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:29,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:15:29,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:15:29,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 08:15:29,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:30,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-29 08:15:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:30,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:30,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:30,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:15:30,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:30,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 08:15:30,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:30,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:30,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:15:30,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 08:15:30,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:15:30,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:30,375 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 163 proven. 145 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 08:15:30,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947474886] [2020-10-29 08:15:30,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:15:30,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 08:15:30,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925580706] [2020-10-29 08:15:30,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:15:30,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:15:30,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:15:30,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:15:30,380 INFO L87 Difference]: Start difference. First operand 7063 states and 9427 transitions. Second operand 10 states. [2020-10-29 08:15:30,651 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-29 08:15:31,567 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 08:15:38,064 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-29 08:15:38,806 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 08:15:39,940 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-29 08:15:56,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:15:56,876 INFO L93 Difference]: Finished difference Result 19447 states and 26375 transitions. [2020-10-29 08:15:56,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 08:15:56,878 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 277 [2020-10-29 08:15:56,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:15:56,923 INFO L225 Difference]: With dead ends: 19447 [2020-10-29 08:15:56,924 INFO L226 Difference]: Without dead ends: 11928 [2020-10-29 08:15:56,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2020-10-29 08:15:56,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11928 states. [2020-10-29 08:15:57,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11928 to 11625. [2020-10-29 08:15:57,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11625 states. [2020-10-29 08:15:57,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11625 states to 11625 states and 14624 transitions. [2020-10-29 08:15:57,350 INFO L78 Accepts]: Start accepts. Automaton has 11625 states and 14624 transitions. Word has length 277 [2020-10-29 08:15:57,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:15:57,351 INFO L481 AbstractCegarLoop]: Abstraction has 11625 states and 14624 transitions. [2020-10-29 08:15:57,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:15:57,351 INFO L276 IsEmpty]: Start isEmpty. Operand 11625 states and 14624 transitions. [2020-10-29 08:15:57,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-29 08:15:57,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:15:57,358 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 08:15:57,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:15:57,359 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:15:57,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:15:57,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1950848648, now seen corresponding path program 1 times [2020-10-29 08:15:57,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:15:57,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102318175] [2020-10-29 08:15:57,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:15:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:57,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:57,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:59,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:00,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:01,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:01,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-29 08:16:01,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:16:01,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4414 [2020-10-29 08:16:01,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:01,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:01,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 08:16:01,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:16:01,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-29 08:16:01,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:02,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:16:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:02,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:02,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:02,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:16:02,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:02,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 08:16:02,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:02,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:02,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:16:02,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:16:02,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:16:02,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:02,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:16:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:02,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:02,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:02,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:16:02,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:02,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-29 08:16:02,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:02,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:02,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:16:02,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:16:02,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:16:02,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:02,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:16:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:02,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:02,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:02,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:16:02,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:02,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-29 08:16:02,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:02,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:02,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:16:02,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:16:02,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 08:16:02,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:16:02,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:16:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:02,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:02,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:02,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:16:02,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:02,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-29 08:16:02,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:02,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:02,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:16:02,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:16:02,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:16:02,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:16:03,242 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 236 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 08:16:03,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102318175] [2020-10-29 08:16:03,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:16:03,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:16:03,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045185711] [2020-10-29 08:16:03,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:16:03,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:16:03,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:16:03,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:16:03,251 INFO L87 Difference]: Start difference. First operand 11625 states and 14624 transitions. Second operand 10 states. [2020-10-29 08:16:03,513 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66